Method for spraying bituminous vapor for road construction machinery and material transfer processes

Abstract

To improve road construction machinery and methods so that the diffusion of bituminous vapors can be more effectively prevented using simpler designs and technical means. [Solution] The present invention relates to a road construction machine (1) configured as a paving machine (2) or a feeder vehicle for supplying paving material to the paving machine (2), wherein the road construction machine (1) comprises a material container (5) for receiving paving material and at least one spraying device (8) for atomizing a liquid (9), wherein the spraying device (8) is configured to spray into bituminous vapor (7) rising from the material container (5), into bituminous vapor (7) rising from a region formed in a material conveyor belt device that transports paving material from the material container (5) in the opposite direction of travel (R), and / or into bituminous vapor (7) rising from the material container (5) of a paving machine (2) following the road construction machine (1).

Description

Technical Field

[0001] The present invention relates to a road construction machine according to claim 1. Further, the present invention relates to a method for a material transfer process according to independent claim 14.

Background Art

[0002] Patent Document 1 discloses a paving machine provided with a spraying device for spraying into bituminous vapor in a lateral distribution area of paving material located in front of a screed attached to the paving machine. Spraying into bituminous vapor in the lateral distribution area can prevent an aerosol containing asphalt from rising from the lateral distribution area to an open operator station of the paving machine. However, vapor containing asphalt generated in other locations of the paving machine cannot be sprayed using a spraying device arranged above the lateral distribution device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to improve a road construction machine and method so that diffusion of bituminous vapor can be more effectively prevented using simple design and technical means.

Means for Solving the Problems

[0005] This object is achieved by a road construction machine according to claim 1 and by a method according to independent claim 14.

[0006] Advantageous developments of the present invention are specified by the respective subject matters of the dependent claims.

[0007] The road construction machine according to the present invention exists in the form of a paving machine or a feeder vehicle for supplying paving material to a paving machine. The road construction machine according to the present invention comprises a material container for receiving paving material and at least one spraying device for atomizing the liquid. The present invention provides that the spraying device is configured to spray bituminous vapor rising from a material container, to spray bituminous vapor rising from a region formed on a material conveyor belt device that transports paving material from a material container in the opposite direction to the direction of travel of the road construction machine, and / or to spray bituminous vapor rising from a material container of a paving machine following the road construction machine.

[0008] For this function, the spraying device according to the present invention is associated with material container and / or material conveyor belt devices in which increased steam generation can occur during the operation of road construction machinery. Increased steam generation occurs particularly when paving material is transferred to a material container, for example, during a material transfer process using a truck pushed in front of the material container, when high-temperature paving material is loaded from the truck into the material container. Therefore, the spraying device according to the present invention can be used particularly during a material transfer process to suppress rising bituminous vapors using a spray mist, such as water mist, that is ejected by the spraying device, thereby preventing the aerosols contained therein from continuing to rise into the area of ​​the (driver's) operator station or other operator stations, such as the area of ​​the screed operator station.

[0009] Increased steam generation in the material container of a paving machine also occurs, particularly when the paving material is loaded by a feeder vehicle traveling ahead of the paving machine, as the hot paving material falls from the feeder vehicle into the material container of the paving machine. The spraying device according to the present invention can also be effectively used to suppress steam generated during the loading process.

[0010] Furthermore, the spraying apparatus according to the present invention can be used to spray vapor generated when paving materials stored in a material container are mixed, that is, regardless of whether a material transfer process is taking place or not.

[0011] Therefore, the spraying device according to the present invention can be used in various scenarios during construction work, and by spraying bituminous vapor in places where vapor generation increases, it can effectively keep the vapor away from the work staff.

[0012] The spraying device preferably comprises at least one nozzle formed directly into the material hopper or at least one nozzle attached to the material hopper. A liquid, such as water, may be supplied to the nozzle through the wall of the material container, for example, through a line (pipe) passing through it. The nozzle may be positioned on the upper edge of the material container, particularly on the upper edge of the tiltable hopper half of the material container, and preferably structurally integrated therein.

[0013] According to one embodiment of the present invention, the material container is configured as a material hopper configured as a detachable attachment container, or as a material hopper with a tiltable (two) hopper halves permanently installed on a road construction machine. The material container as an attachment container is configured to hold more paving material. To this end, the attachment container may have higher side walls than the material hopper provided on the road construction machine into which the attachment container is inserted.

[0014] In one variant, the material container, particularly when it exists as an attachment container, forms at least partially a spraying device, which can be driven by a generator of a road construction machine or by a battery. According to one variant, all liquid lines of the spraying device can be piped to the material container, particularly inside the double walls provided therein.

[0015] The attachment container may have a rear wall facing the operator station of the road construction machine, and at least one nozzle of the spraying device may be positioned on the rear wall. The spray pattern of the atomized liquid from the rear wall of the attachment container can form a blanket-like structure above the paving material falling into the attachment container, covering the generated vapors and preventing them from rising from the attachment container.

[0016] In one modified form, the spraying device has at least one nozzle mounted on the engine hood of a road construction machine. This nozzle may be housed in an opening formed in the engine hood for this purpose. The nozzle is particularly positioned on a vertical portion of the engine hood facing and projecting above a material hopper. This makes it possible to spray atomized liquid onto the bituminous vapor rising in the material hopper. In particular, the nozzle formed in the engine hood may be positioned such that the spray pattern it generates is generated directly above the material hopper and covers the vapor rising in the material hopper before it exits the material hopper.

[0017] According to one embodiment, the nozzle is configured as a fan nozzle. Such a nozzle may be placed directly on the material container or housed in a slot formed in the engine hood above the material hopper. This makes it possible to generate a horizontal spray mist as a spray pattern above the received paving material.

[0018] It is advantageous for the nozzle to be located on the material container and / or engine hood such that the sprayed liquid is captured by the cooling airflow flowing out from the engine hood and distributed over an area on the material container, forming an expanded mist field to suppress rising vapors.

[0019] It is particularly useful that the nozzle can be used to generate a spray pattern above the material container and below the cooling airflow coming out of the engine hood in the direction of travel. The mist generated by the nozzle, along with the cooling airflow above it, can enhance the vapor shielding effect.

[0020] The spraying device preferably comprises at least one adjustable nozzle for forming different spray patterns and / or different flow directions. The nozzle may be automatically adjusted according to the position of the material hopper half. In this case, the spray width and / or direction of the spray pattern produced by the nozzle may be adjusted to avoid spraying onto an inclined material hopper half or to enable horizontal spraying even when the hopper half is inclined.

[0021] According to one embodiment of the present invention, the spraying device comprises at least one tank for holding liquid and a pump, which are either housed in the engine compartment of a road construction machine or attached to the road construction machine as an add-on kit that can be attached detachably without the need for tools. In embodiments where the material container exists as an attachment container, the tank and pump of the spraying device may be integrated into the attachment container. That is, the tank and pump of the spraying device may exist as components of the attachment container. In this variant, the capacity / volume of the tank may be determined at least partially by the wall of the attachment container.

[0022] The spraying device preferably includes a tank for holding a liquid, particularly water, used for spraying onto bituminous vapor, and a separate tank for holding another liquid, such as a detergent, that is not used for spraying onto bituminous vapor.

[0023] It is convenient to drive the spraying device by the energy supply source of the road construction machine. Alternatively, an independent energy supply source is also conceivable. For example, the spraying device is powered by the generator of the road construction machine or is formed as a battery-driven type.

[0024] According to one embodiment, the material conveyor belt device exists as a longitudinal conveyor device of the paving machine or as a pivot conveyor device of the feeder vehicle, and the spraying device sprays into the transfer area formed between the continuously arranged conveyor belts of the pivot conveyor device and / or sprays into the discharge area formed at the outlet of the conveyor belt of the pivot conveyor device configured as a discharge belt. In such a transfer area of the material, since the paving material has a certain falling height for further conveyance therefrom, an increase in steam generation may occur in the feeder vehicle.

[0025] The spraying device preferably includes a temperature control unit for adjusting the temperature, particularly cooling, of the spraying liquid, and / or a measuring device for detecting the aerosol load in at least one of the sprayable areas. By using actively cooled liquid, it is possible to generate a spray mist that can cool the steam more rapidly, that is, the aerosol contained therein can be better combined. The aerosol load can be detected, for example, by an optical measuring device, particularly a measuring device directly attached to the material container. It is also conceivable to use the measuring device to detect the air humidity around the road construction machine and adjust the spraying performance of the spraying device accordingly.

[0026] It is conceivable that the measuring device exists as part of a mobile control unit for the spraying device. However, a mobile control unit for a spraying device without a measuring device is also conceivable.

[0027] It is also conceivable that the spraying device is a drone, i.e., the spraying device is formed by at least one unmanned aircraft. This drone can also be used in addition to the spraying device fixed and used by road construction machinery. The spraying device in the form of a drone can be used at various locations of road construction machinery and even various road construction machinery within a paving train to spray the bituminous vapor rising from the material container mainly using the liquid stored in the drone.

[0028] The drone can be parked under the roof of the road construction machinery, for example, at a (loading) station provided there, and can be used to spray the bituminous vapor rising from the material container during the material transfer process, especially when the truck pours the paving material into the material container of the road construction machinery or during the continuous supply process.

[0029] According to one variant, the measurement can be directly carried out by the drone depending on which spraying can be carried out by the drone even when the drone is parked under the roof. For example, the drone can be configured to detect the aerosol load in the area of the material container.

[0030] The spraying device may comprise at least one hose reel and a nozzle that is connectable to or connected to the hose housed in the hose reel. The hose can be fully extended from a hose reel located, for example, in the engine compartment, and the nozzle can be attached directly to a desired location in the area of ​​the material container, preferably on the upper edge of the material container, using, for example, a tool-free quick-release fastener. The nozzle may also be used as a cleaning nozzle for cleaning the road construction machine after the completion of work by the road construction machine, i.e., after paving or supplying. For this purpose, the nozzle may be configured to produce various spray patterns. For cleaning purposes, the spraying device may use a cleaning agent stored in a separate tank. However, the cleaning agent is not used for spraying bituminous vapor. Instead, for this purpose, another liquid is used, such as water stored in the water tank of the spraying device.

[0031] In one variant, the hose can be fully extended from the hose reel and connected to a nozzle located in an attachment container, particularly a nozzle integrally mounted therein. In this variant, the attachment container provides a nozzle for connecting to components of a spraying device that are located separately from the attachment container on the road construction machine.

[0032] It is conceivable that the spraying system could be supplied with spray liquid by a tank vehicle accompanying the road construction machinery. The road construction machinery and the tank vehicle can travel side by side in the direction of paving.

[0033] According to one variant, the spraying device comprises at least one nozzle for spraying into the exhaust stream generated from the extracted bituminous vapor. In particular, this nozzle may be used on the discharge side of the ventilation system, which generates overpressure, to spray into the exhaust stream released at the outlet of the ventilation system. The extracted vapor originates particularly from the lateral distribution region in front of the screed.

[0034] Furthermore, the present invention relates to a paving train comprising at least one road construction machine according to the present invention, more particularly a paving train comprising at least one paving machine according to the present invention and at least one feeder vehicle, particularly a feeder vehicle according to the present invention that travels in the manufacturing (paving) direction ahead of the paving machine and supplies paving material to the paving machine. In such a paving train, each component vehicle, i.e., both the paving machine and the preceding feeder vehicle, may preferably be equipped with a spraying device according to the present invention for spraying atomized liquid onto bituminous vapor rising from the respective material containers of these vehicles.

[0035] The spraying device of the preceding feeder vehicle may be configured, in particular, on the discharge belt, to spray the bituminous vapor rising from the material container of the following paving machine. This allows the following paving machine to suppress the vapor from the material container, i.e., prevent the vapor from diffusing along the paving machine, even when operating without its own spraying device.

[0036] In one variant, at least one spraying device, configured as a drone, is used in a paving train to spray atomized liquid onto steam rising from at least several material containers. This can be done alternately between vehicles, for example, depending on which vehicle in the paving train has the highest steam load.

[0037] The present invention further relates to a method for a material transfer process for supplying paving material to a paving machine and / or a feeder vehicle. According to the present invention, an atomized liquid is at least temporarily sprayed during the material transfer process onto bituminous vapor rising from the material container of the paving machine and / or a feeder vehicle, and / or onto the bituminous vapor rising from an area formed on a material conveyor belt device that transports paving material from the material container. During the material transfer process, particularly where paving material is transferred between vehicles, for example, where it is fed from a truck to a feeder vehicle, or where it is fed directly from a truck to a paving machine, the generation of bituminous vapor in the area of ​​the material container is particularly intense, so spraying onto the generated vapor is effective in preventing it from diffusing.

[0038] Preferably, at least one spraying device located on a paving machine, at least one spraying device located on a feeder vehicle, and / or at least one drone are used to spray the rising bituminous vapor.

[0039] In a paving train, a spraying device configured as a drone is envisioned to move along an automatic flight path. The spraying device (drone) is positioned in the area of ​​the feeder vehicle's material container when paving material is being fed from the truck into the feeder vehicle's material container, and sprays the increased vapor generated in this material container by the feeding of paving material, for example, while the truck is being pushed by the feeder vehicle's push bar. Subsequently, the drone automatically flies in the opposite direction to the paving train's manufacturing (paving) direction, moving to the area where paving material falls from the feeder vehicle's discharge belt into the material container of the subsequent paving machine, and sprays the bituminous vapor rising from the paving machine's material container.

[0040] In one variant, the drone functions as an auxiliary drone, supporting a spraying device used in paving machinery and / or feeder vehicles to spray vapor from a material container, particularly when vapor generation in the material container increases.

[0041] The present invention will be described in more detail using embodiments shown in the drawings. [Brief explanation of the drawing]

[0042] [Figure 1] This figure shows a road construction machine in the form of a paving machine equipped with a spraying device. [Figure 2] This figure shows a road construction machine in the form of a paving machine equipped with a spraying device configured as a drone. [Figure 3] This is a partial front view of a paving machine with the material hopper (half-section) folded. [Figure 4] This figure shows a road construction machine in the form of a paving machine equipped with an attachment container inside a material hopper. [Figure 5] This figure shows a road construction machine in the form of a feeder vehicle equipped with a spraying device. [Figure 6] This figure shows a road construction machine in the form of a feeder vehicle equipped with a spraying device. [Modes for carrying out the invention]

[0043] The same technical features are given the same reference numerals throughout all drawings.

[0044] Figure 1 shows a road construction machine 1 configured as a paving machine 2 for producing a new pavement layer 3. To produce the pavement layer 3, the paving machine 2 is equipped with a screed 4, to which paving material is supplied from a material container 5. The paving material is transported from the material container 5 to a lateral distribution auger 6 mounted in front of the screed 4 in the opposite direction of travel R of the paving machine 2, by a material conveyor belt device (not shown) which is present as a longitudinal conveyor device below the driver operator station, and is spread out there. According to Figure 1, the material container 5 is configured as a material hopper in the paving machine 2.

[0045] Vapor 7 containing bituminous aerosols rises from the material container 5. The paving machine 2 in Figure 1 is equipped with a spraying device 8 configured to spray atomized liquid 9 onto the vapor 7. This may be a water mist to suppress or cover the aerosols contained in the vapor 7. The resulting increase in droplet formation causes the bituminous aerosols contained in the vapor 7 rising from the material container 5 to condense, thereby preventing them from spreading further, and in particular, preventing them from rising to the operator station 10 of the paving machine 2.

[0046] According to Figure 1, the spraying device 8 is installed in the engine compartment 11 of the paving machine 2. Alternatively, a modular mounting is also possible, in which case the spraying device 8 exists as a modular add-on kit, i.e., detachably attached to the paving machine 2 in the area of ​​the material container 5, and as a module suitable for autonomous operation.

[0047] Furthermore, Figure 1 shows a side panel 12 of the engine compartment 11 that can be opened like a door to access the spraying device 8. The spraying device 8 has a tank 13, for example, a water tank, for holding liquid 9. Furthermore, the spraying device 8 has a pump 14 configured to draw liquid 9 from the tank 13 and transport it through a line 15 to a nozzle 16. The nozzle 16 is configured as an atomizer nozzle, in particular a flat nozzle or a fan nozzle, respectively.

[0048] The nozzle 16 in Figure 1 is positioned on the engine hood 17, particularly on the vertical portion 17a of the engine hood 17, so that the atomized liquid 9 can be sprayed in the direction of travel R above the material container 5.

[0049] According to Figure 1, the spraying device 8 includes a hose reel 18 located within the engine compartment 11. The hose reel 18 is connected to the pump 14 via a line 15. The hose reel 18 allows the nozzle 16 to be extended from the hood 17, for example, to be used to clean the paving machine 2. Alternatively, the spraying device 8 shown in Figure 1 may be configured in a simplified form without the hose reel 18, in which case the nozzle 16 is permanently installed within the hood 17 or fixedly positioned on the hood 17.

[0050] As shown in Figure 1, the spray pattern 19 formed by the atomized liquid 9 can be formed below the cooling airflow K flowing out from the engine hood 17. This further enhances the effect of keeping the steam 7 away from the operator station 10. The cooling airflow K is directed in the direction of travel R by at least one flow rib formed in the hood 17 to cover the spray pattern 19.

[0051] For the material transfer process, the paving machine 2 has a push bar 50 to which an idle truck can dock at its rear wheels in order to load paving material into a material container 5. During the material transfer process, the truck can be pushed in the direction of travel R by the paving machine 2.

[0052] Figure 2 shows a road construction machine 1 in the form of a paving machine 2 equipped with a spraying device 8 which exists as a drone 20. The drone 20 has a tank 13' containing liquid 9 and at least one nozzle 16 for atomizing the liquid 9. The drone 20 is equipped with a pump 14' for transporting the liquid 9 from the tank 13' to the nozzle 16.

[0053] The drone 20 flies above the material container 5, particularly during the material transfer process, and sprays atomized liquid 9 onto the rising steam 7 from above. As a result, the bituminous aerosols contained in the steam 7 combine (aggregate) with the increase in droplet formation, meaning they are unable to spread further.

[0054] In Figure 2, the spraying device 8', configured in the form of a drone 20, can be used as an auxiliary drone in addition to the spraying device 8 shown in Figure 1. A station 22 for the drone 20 in the paving machine 2 of Figure 2 is provided on the roof 21 of the paving machine, and this station exists specifically as a charging station. The drone 20 can remain there when it is not needed for spraying the steam 7. However, the drone 20 leaves station 22 when it is needed, for example, as an auxiliary drone to support the spraying device 8.

[0055] Furthermore, Figure 2 shows a measuring device 23 positioned in the area of ​​the material container 5 to detect the aerosol load from the rising steam 7. The measuring device 23 may be positioned on the engine hood 17 of the paving machine 2. Alternatively, the drone 20 may be equipped with a measuring device 23 for detecting the aerosol load from the rising steam 7.

[0056] The use of the spraying device 8' shown in Figure 2, which exists as drone 20, and / or the spraying device 8 shown in Figure 1, may be controlled based on measurements from the measuring device 23. The measuring device 23 may also be configured to detect air humidity, and as a result, if the detected air humidity is relatively high, drone 20 will not be used to spray onto the rising vapor 7.

[0057] The front view of Figure 3 shows the material hopper halves 24a and 24b of the material container 5, which are folded to move the paving material from the lateral areas toward the center. The material hopper halves 24a and 24b are equipped with nozzles 25a and 25b through which atomized liquid 9 can be sprayed into the containment area of ​​the material container 5. The double arrows P and P' in Figure 3 schematically show that the nozzles 25a and 25b are adjustable to maintain a horizontal spray of atomized liquid 9, and in particular, are automatically adjustable to more effectively prevent bituminous aerosol from rising from the material container 5.

[0058] Figure 4 shows a paving machine 2, in which a material container 5 exists as an attachment container 26 and is inserted into the material hopper of the paving machine 2. The attachment container 26 is suitable for accepting more paving material because its side walls are higher than those of the material hopper.

[0059] As the paving material falls from the discharge belt 27a, which is configured as a pivot conveyor of the feeder vehicle 35 traveling ahead, into the attachment container 26, steam 7 is generated in the discharge area.

[0060] According to Figure 4, the attachment container 26 is configured as a spraying device 8'' for spraying onto the steam 7 rising from it. For this purpose, the attachment container 26 is equipped with a nozzle 29, which is formed in the rear wall 30 of the attachment container 26, as shown in Figure 4. The spraying device 8'' formed by the attachment container 26 is powered by the generator 31 of the paving machine 2 via an electrical line 32. According to Figure 4, a pump 14'' integrated into the attachment container 26 is electrically driven via the line 32 using the generator 31, and can transport liquid 9 from a tank 13'' provided in the attachment container 26 to the nozzle 29.

[0061] The attachment container 26 may also exist without a spraying device 8'', in which case spraying is performed on the rising steam 7 from it using the drone 20 shown in Figure 2, and / or a nozzle 16 connected to a hose reel 18 is pulled out from the hood 17 and attached to the rear wall 30 of the attachment container 26 for spraying onto the steam.

[0062] It is also conceivable that the nozzle 29 provided on the attachment container 26 can be connected to the hose of the hose reel 18. In other words, it is conceivable that the spraying device 8 in Figure 1 can be connected to the nozzle 29 of the attachment container 26 in order to spray onto the steam 7.

[0063] Figure 5 shows a road construction machine 1 in the form of a feeder vehicle 35. This feeder vehicle 35 is configured to supply paving material to a following paving machine 2 in the direction of travel R, and thus forms a paving train E (see Figure 4).

[0064] The feeder vehicle 35 in Figure 5 is equipped with a material container 5'. Paving material is transported from the material container 5' by a material conveyor belt device, which exists in the form of a pivot conveyor device, in the direction opposite to the direction of travel R of the feeder vehicle 35. The material conveyor belt device of the feeder vehicle 35 is equipped with a conveyor belt 27b, which discharges the paving material from the material hopper 5' and transfers it to a discharge belt 27a configured as a pivot belt. The atomized liquid 9 can be sprayed onto the steam 7 rising from the material container 5' by a spraying device 8''' provided on the feeder vehicle 35, and in particular, can be sprayed when a truck pushed by a push bar 50' loads the paving material into the material container 5'.

[0065] As shown in Figure 5, the spraying device 8'' is configured to also spray the atomized liquid 9 into the transfer area 40 formed between the conveyor belt 27b and the discharge belt 27a, which is configured as a pivot belt. This is because an increase in vapor generation can occur there as well.

[0066] Furthermore, according to the embodiment shown in Figure 6, the spraying device 8''' may be configured to spray the atomized liquid 9 at the outlet of the discharge belt 27a onto the steam 7 present there and the steam 7 rising from the material container 5 of the subsequent paving machine 2.

Claims

1. A road construction machine (1) configured in the form of a paving machine (2) or a feeder vehicle (35) for supplying paving material to the paving machine (2), The system comprises a material container (5, 5') for receiving paving material and at least one spraying device (8, 8', 8'', 8'''') for atomizing the liquid (9), The spraying device (8, 8', 8'', 8'''') a) To spray onto the bituminous vapor (7) rising from the material container (5, 5'), b) to spray the paving material into bituminous vapor (7) rising from an area formed on a material conveyor belt device that transports the paving material from the material containers (5, 5') in a direction opposite to the direction of travel (R) of the road construction machine (1), and / or c) To spray onto the bituminous vapor (7) rising from the material container (5) of the paving machine (2) that follows the road construction machine (1), A road construction machine characterized by its configuration.

2. The road construction machine according to claim 1, characterized in that the spraying device (8) comprises at least one nozzle (25a, 25b) formed directly on and / or attached to the material container (5).

3. The road construction machine according to claim 1 or 2, characterized in that the material container (5) exists in the form of a detachable attachment container (26), or in the form of a material hopper having a tiltable hopper split body (24a, 24b) permanently installed on the road construction machine (1).

4. The road construction machine according to any one of claims 1 to 3, characterized in that the spraying device (8) comprises at least one nozzle (16) attached to the engine hood (17) of the road construction machine (1).

5. The road construction machine according to claim 4, characterized in that the nozzle (16) can be used to generate a spray pattern positioned above the material container (5, 5') and below the cooling airflow (K) exiting the engine hood (17) in the direction of travel (R).

6. The road construction machine according to any one of claims 1 to 5, characterized in that the spraying device (8) comprises at least one nozzle (16, 25a, 25b) that is adjustable to form different spray patterns and / or different flow directions.

7. The road construction machine according to any one of claims 1 to 6, wherein the spraying device (8, 8', 8'', 8'''') includes at least one tank (13, 13', 13'') and a pump (14, 14', 14''), which are in particular housed in the engine compartment (11) of the road construction machine (1) or are detachably attached to the road construction machine (1) as a toolless add-on kit.

8. The road construction machine according to any one of claims 1 to 7, characterized in that the spraying device (8, 8', 8'', 8'''') is driven by the energy supply source of the road construction machine (1) or has an independent energy supply source.

9. The road construction machine according to any one of claims 1 to 8, characterized in that the material conveyor belt device exists as a longitudinal conveyor device of the paving machine (2) or as a pivot conveyor device of the feeder vehicle (35), and the spraying device (8, 8', 8'', 8'''') is configured to spray into a transfer area (40) formed between the continuously arranged conveyor belts (27a, 27b) of the pivot conveyor device, and / or to spray into a discharge area formed at the outlet of the conveyor belt (27a) of the pivot conveyor device configured as a discharge belt.

10. The road construction machine according to any one of claims 1 to 9, characterized in that the spraying device (8, 8', 8'', 8'''') comprises a temperature control unit for adjusting the temperature of the liquid and / or a measuring device (23) for detecting the aerosol load in at least one of the sprayable areas.

11. The road construction machine according to any one of claims 1 to 10, characterized in that the spraying device (8') exists as a drone (20).

12. The road construction machine according to any one of claims 1 to 11, characterized in that the spraying device (8) comprises at least one hose reel (18) and a nozzle (16) connected to a hose housed in the hose reel (18).

13. A road construction machine (1) according to any one of claims 1 to 12, in particular a paving train having at least one paving machine (2) and at least one feeder vehicle (35) that travels in front of the paving machine (2) in the manufacturing direction (R) to supply paving material to the paving machine (2).

14. A method for a material transfer process for supplying paving material to a paving machine (2) and / or a feeder vehicle (35), A method characterized in that, during the material transfer process, the atomized liquid (9) is at least temporarily sprayed onto bituminous vapor (7) rising from the material containers (5, 5') of the paving machine (2) and / or the feeder vehicle (35) and / or from an area formed on a material conveyor belt device that transports paving material from the material containers (5, 5').

15. During the material transfer process, a. At least one spraying device (8, 8'',) located on the paving machine (2), b. At least one spraying device (8''') located on the feeder vehicle (35), and / or c. At least one spraying device (8') configured as a drone (20), The method according to claim 14, characterized in that the following is used.

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