Road construction machine and method for material conveying process

Abstract

The invention relates to a road construction machine (1) configured in the form of a paver (2) or in the form of a supply vehicle (35) for supplying a paver (2) with paving material, the road construction machine (1) comprising a material container (5, 5 ') for receiving the paving material and at least one spraying device (8, 8', 8 '', 8'' ') for atomizing a liquid (9), and wherein the spraying device (8, 8', 8 '', 8'' ') is arranged in the material container (5, 5') for spraying the liquid (9) into the material container (5, 5 '). The spraying device (8, 8 ', 8' ', 8 ''') is configured to spray the asphalt steam (7) rising from the material container (5, 5 ') for spraying the asphalt steam (7) rising from an area formed at a material conveying belt device which conveys paving material from the material container (5, 5') in a direction opposite to the direction of travel (R) of the road construction machine (1), and the material conveying belt device is configured to convey the paving material from the material container (5, 5 ') in a direction opposite to the direction of travel (R) of the road construction machine (1). And / or is configured for spraying asphalt steam (7) rising from a material container (5) of a paver (2) following the road construction machine (1).

Description

Technical Field

[0001] This invention relates to road construction machinery. Furthermore, this invention relates to a method for material conveying processes. Background Technology

[0002] EP3276081A1 discloses a paver with a spraying device for spraying asphalt vapors in a transverse distribution area of ​​the paving material attached to the front of the paver's screed. Spraying the asphalt vapors in this transverse distribution area prevents asphalt-containing aerosols from rising from this area to the paver's open operator workstation. However, it is impossible to use a spraying device positioned above this transverse distribution device to spray asphalt-containing vapors generated at other locations on the paver. Summary of the Invention

[0003] The purpose of this invention is to improve a road construction machine and a method that can better prevent the diffusion of asphalt vapor using simple design and technical measures.

[0004] The road construction machinery according to the invention can take the form of a paver or a material supply vehicle for supplying paving material to a paver. The road construction machinery according to the invention includes a material container for receiving paving material and at least one spraying device for atomizing the liquid. The spraying device provided by the invention is configured to: spray asphalt vapor rising from the material container; spray asphalt vapor rising from an area formed on a material conveyor belt that transports paving material from the material container in a direction opposite to the direction of travel of the road construction machinery; and / or spray asphalt vapor rising from the material container of a paver following the road construction machinery.

[0005] For this function, the spraying device according to the invention is associated with a material container and / or a material conveyor belt, where significant amounts of steam may be generated during road construction machinery operations. Steam generation increases particularly when paving material is being transported to the material container (e.g., during material transport), using a truck pushed in front of the material container and dumping hot paving material from the truck into the container. Therefore, the spraying device according to the invention can be used especially during material transport to suppress rising asphalt vapors by using its sprayed mist (e.g., water mist), thereby preventing the contained aerosols from continuing to rise into the area of ​​the (driver's) operator's workstation or other operator workstations (e.g., the area of ​​the screed operator's workstation).

[0006] Furthermore, when the paver is loaded by a feed truck traveling ahead, and the hot paving material falls from the feed truck into the paver's material container, a significant amount of steam is generated within the paver's material container. The spraying device according to the invention can also be used to effectively suppress the steam generated during this loading process.

[0007] Furthermore, the spraying device according to the invention can also be used to spray the steam generated when the paving material stored in the material container is mixed, i.e., regardless of whether the material conveying process is in progress.

[0008] Therefore, the spraying device according to the present invention can be used in various scenarios during construction operations, effectively preventing steam from contacting operators by spraying asphalt vapor in areas where steam is generated in large quantities.

[0009] The spraying device preferably includes at least one nozzle, which is formed directly on or attached to the material hopper. The nozzle can be supplied with liquid (e.g., water) through the wall of the material container (e.g., through internal piping). It is conceivable that the nozzle is arranged on the upper edge of the material container, particularly on the upper edge of the tiltable material hopper of the material container, preferably structurally integrated with the material hopper.

[0010] According to one embodiment of the invention, the material container is configured as a detachable attachment container, or as a material hopper permanently mounted on road construction machinery with a tiltable material hopper half. As an attachment container, the material container is configured to receive a larger volume of paving material. For this purpose, the attachment container may be equipped with sidewalls that are higher than those of the material hopper on the road construction machinery (in which the attachment container is inserted).

[0011] One variation specifies that the material container (especially when it is an accessory container) is at least partially formed with a spraying device, which can be powered by a generator of the road construction machinery or by a battery. According to another variation, all the liquid piping of the spraying device can be arranged inside the material container, particularly within the double walls provided on the material container.

[0012] It is conceivable that the attachment container has a rear wall facing the operator's workstation of the road construction machinery, and that at least one nozzle of a spraying device is arranged on this rear wall. The atomized liquid from the rear wall of the attachment container can form a spray pattern that covers the paving material like a blanket, with the atomized liquid falling into the attachment container to cover any vapors generated and prevent them from escaping from the attachment container.

[0013] One variation specifies that the spraying device has at least one nozzle attached to the engine hood of the road construction machinery. This nozzle can be accommodated in an opening formed in the engine hood for this purpose. Specifically, the nozzle is positioned on a vertical portion of the engine hood that faces the material hopper and projects upwards. This allows the atomized liquid to be sprayed onto the asphalt vapor rising in the material hopper. In particular, the nozzle formed on the engine hood can be positioned such that its spray pattern is positioned directly above the material hopper to cover the vapor rising from it before it exits the hopper.

[0014] According to one embodiment, the nozzle is configured as a fan-shaped nozzle. This nozzle can be positioned directly on the material container or housed within a slit formed in the hood above the material hopper. This creates a horizontal spray over the received paving material, serving as a spraying pattern.

[0015] Advantageously, the nozzle is positioned on the material container and / or engine hood, so that the sprayed liquid can be captured by the cooling airflow flowing from the engine hood and dispersed to various areas of the material container, thereby forming an amplified mist field to suppress rising steam.

[0016] Particularly helpful is the ability of the nozzles to create a spray pattern positioned above the material container and below the cooling airflow exiting the engine hood in the direction of travel. The atomization produced by the nozzles, combined with the cooling airflow positioned above, provides better shielding against vapor.

[0017] The spraying device preferably includes at least one adjustable nozzle for creating different spray patterns and / or different flow directions. It is conceivable that the nozzle is automatically adjusted according to the position of the material hopper half. In this case, it is conceivable to adjust the spray width of the resulting spray pattern and / or adjust its direction to avoid spraying onto the inclined material hopper half, or to achieve horizontal spraying even if the hopper half is inclined.

[0018] According to one embodiment of the invention, the spraying device includes at least one tank for containing liquid and a pump, which can be housed in the engine compartment of road construction machinery or attached to the road construction machinery as a retrofit kit, such as a tool-free detachable attachment. In embodiments where the material container is presented as an accessory container, the tank and pump of the spraying device can be integrated into the accessory container, i.e., as part of the accessory container. In this variation, it is conceivable that the volume of the tank is at least partially defined by the walls of the accessory container.

[0019] The spraying device is preferably equipped with a storage tank for holding a liquid (especially water) that is used to spray the asphalt vapor; and a separate storage tank for holding another liquid (e.g., a cleaning agent) that is not used to spray the asphalt vapor.

[0020] Advantageously, the spraying device is powered by the energy supply of the road construction machinery. Alternatively, an independent energy supply can be considered. For example, the spraying device could be powered by the generator of the road construction machinery, or designed to be battery-powered.

[0021] According to one embodiment, the material conveyor belt device can be configured as a longitudinal conveying device of a paver or a rotary conveying device of a feed trolley, wherein the spraying device is configured to spray transition areas formed between the continuously arranged conveyor belts of the rotary conveyor, and / or to spray unloading areas formed at the outlet of the conveyor belt of the rotary conveyor, which serves as an unloading belt. In these material transition areas, more steam may be generated at the feed trolley because the paving material requires a certain drop to continue conveying.

[0022] The spraying device preferably includes a temperature control unit for adjusting the temperature (especially cooling) of the spray liquid, and / or a measuring device for detecting the aerosol load in at least one sprayable area. Using actively cooled liquids, a spray can be generated, allowing the vapor to cool more quickly, i.e., better bind the aerosols it contains. The aerosol load can be detected, for example, by an optical measuring device (especially one directly attached to the material container). It is conceivable that the measuring device would be used to detect the air humidity around the road construction machinery and adjust the spraying performance of the spraying device accordingly.

[0023] It is conceivable that the measuring device is part of the mobile control unit of the spraying device. However, it is also conceivable that the mobile control unit of the spraying device is not equipped with a measuring device.

[0024] It is conceivable that the spraying device is a drone, consisting of at least one unmanned aerial vehicle. This drone can also be used in conjunction with spraying devices that are fixed on road construction machinery. This drone-based spraying device can be deployed at various locations on road construction machinery, and even on different construction machines on a paving train, to utilize liquid stored within the drone to primarily spray asphalt vapor rising from material containers.

[0025] It is conceivable that drones could be parked under the roof of road construction machinery (e.g., at a (loading) station set up there) and used during material delivery (especially when trucks dump paving material into the material containers of the road construction machinery), or to spray asphalt vapor rising from the material containers during continuous feeding.

[0026] In one variant, the drone can perform direct measurements (based on which it can then perform spraying), even when parked under a vehicle roof. For example, the drone can be configured to detect the aerosol load in an area containing a material container.

[0027] It is conceivable that the spraying device includes at least one hose reel and a nozzle, which can be connected to or has been connected to a hose housed on the hose reel. The hose can be pulled out from the hose reel (which is, for example, located in the engine compartment) to a length sufficient to allow the nozzle to be attached to a desired location within the material container area, for example, using quick-release fasteners without tools, preferably directly to the upper edge of the material container. The nozzle can also be used as a cleaning nozzle for cleaning the road construction machinery after it has ceased operation (e.g., after paving or conveying operations). For this purpose, the nozzle can be configured to produce various spray patterns. For cleaning purposes, the spraying device can use a cleaning agent stored in a separate tank. However, this cleaning agent is not used to spray onto asphalt vapor. Instead, another liquid (e.g., water) is used for this purpose, stored in the water tank of the spraying device.

[0028] According to one variation, the hose can be pulled out far enough from the hose reel to connect to nozzles arranged on an accessory container, particularly nozzles integrated into the accessory container. In this variation, the accessory container provides nozzles for connection to various components of the spraying device that would otherwise be separately arranged on the road construction machinery, separate from the accessory container.

[0029] It is conceivable that the spraying equipment could be supplied with spraying fluid by tanker trucks accompanying the road construction machinery. The road construction machinery and tanker trucks could travel side by side in the paving direction.

[0030] According to one variant, the spraying device includes at least one nozzle for spraying the exhaust gas stream generated from the extracted bitumen vapor. Specifically, the nozzle can be used on the exhaust side of a ventilation system that generates overpressure to spray the exhaust gas stream exiting from the ventilation system's outlet. The extracted vapor originates particularly from a lateral distribution area in front of the screed.

[0031] Furthermore, the present invention relates to a paving train comprising at least one road construction machine according to the invention (particularly at least one paver according to the invention) and at least one feeder vehicle (particularly a feeder vehicle according to the invention), which travels in front of the paver along the production direction and supplies it with paving material. In this paving train, each participant (i.e., the paver and the feeder vehicle traveling in front) is preferably equipped with a spraying device according to the invention for spraying atomized liquid onto asphalt vapor rising from the respective material containers of these feeder vehicles.

[0032] The spraying device of the feed truck traveling ahead can be specifically configured on the unloading belt, enabling it to spray asphalt vapor rising from the material container of the paver behind. In this way, even if the paver itself does not have a spraying device, it can suppress the vapor from the material container, thus preventing the vapor from spreading further along the paver.

[0033] One variant specifies that at least one spraying device is configured as a drone to spray the atomized liquid onto the steam rising from the material container on the paving train. For example, spraying can be performed alternately between different cars in the paving train, depending on which car has the highest steam load.

[0034] The present invention also relates to a method for a material conveying process for supplying paving material to a paver and / or a feed truck. According to the invention, during material conveying, the atomized liquid is sprayed at least temporarily onto asphalt vapor rising from the material container of the paver and / or the feed truck and / or from the material conveyor belt that transports the paving material out of the material container. During material conveying, especially when paving material is transported between vehicles (e.g., from a truck to a feed truck or directly from a truck to a paver), a large amount of asphalt vapor is generated in the area of ​​the material container, and spraying the generated vapor effectively prevents its diffusion.

[0035] To spray the rising asphalt vapor, preferably, at least one spraying device is arranged on the paver, at least one spraying device is arranged on the feed truck, and / or at least one drone is used.

[0036] It is conceivable that the spraying device in the paving train is configured as a drone to move along an automated flight path. As paving material is dumped from the truck into the material container of the feed truck, the drone is positioned in the area of ​​the material container to spray the large amount of vapor generated at the material container due to the dumping of paving material. For example, as long as the truck is pushed by the feed truck's push rod, the drone will automatically fly in the opposite direction of the paving train's production direction to reach the area where the paving material falls from the feed truck's unloading strip into the material container of the following paver, in order to spray the asphalt vapor rising from the paver's material container.

[0037] Another variant specifies that drones serve as auxiliary drones to support spraying devices used on pavers and / or feed trucks for spraying steam generated in material containers, especially when large amounts of steam are present. Attached Figure Description

[0038] The present invention will now be described in more detail with reference to the embodiments shown in the accompanying drawings, wherein: Figure 1 The image shows a road construction machine in the form of a paver equipped with a spraying device; Figure 2 The image shows a road construction machine in the form of a paver with a spraying device configured as a drone. Figure 3 A partial front view of a paver with a material hopper half that is folded upwards is shown; Figure 4 This illustrates a road construction machine in the form of a paver with an accessory container inside the material hopper; Figure 5 Road construction machinery in the form of a material supply vehicle with a spraying device is shown; and Figure 6 The image shows a road construction machine in the form of a material supply vehicle equipped with a spraying device.

[0039] All identical technical features in all figures are marked with the same reference numerals. Detailed Implementation

[0040] Figure 1 Road construction machinery 1, configured as a paver 2, is shown for producing a new paving layer 3. To produce the paving layer 3, the paver 2 includes a screed 4, which is supplied with paving material by a material container 5. The paving material is conveyed from the material container 5 in the opposite direction to the travel direction R of the paver 2 via a material conveyor belt device (not shown)—located below the operator's workstation as a longitudinal conveying device—to a transverse distribution auger conveyor 6 mounted in front of the screed 4 for spreading. Figure 1 As shown, the material container 5 is configured as the material hopper of the paver 2.

[0041] Vapor 7 containing asphalt aerosol rises from material container 5. Figure 1 The paver 2 includes a spraying device 8 configured to spray atomized liquid 9 onto steam 7. The atomized liquid 9 can be a water mist, used to suppress or adsorb aerosols contained in the steam 7. As droplet formation increases, asphalt aerosols contained in the steam 7 rising from the material container 5 can be adhered, thus preventing further diffusion, and in particular preventing them from floating to the operator's workstation 10 of the paver 2.

[0042] like Figure 1 As shown, the spraying device 8 is installed in the engine compartment 11 of the paver 2. Alternatively, modular installation can also be considered, whereby the spraying device 8 exists as a modular retrofit kit, that is, as a module that can be detachably attached to the paver 2 within the material container 5 area and is suitable for autonomous operation.

[0043] also, Figure 1 A side panel 12 of the engine compartment 11 is shown, which can be opened like a door to access the spraying device 8. The spraying device 8 is provided with a reservoir 13, such as a water tank, for holding liquid 9. In addition, the spraying device 8 is provided with a pump 14, which is configured to pump liquid 9 from the reservoir 13 and deliver liquid 9 through pipe 15 to nozzles 16, which are configured as atomizing nozzles, specifically, flat nozzles or fan nozzles.

[0044] Figure 1 The nozzle 16 is arranged on the engine cover 17, particularly on the vertical portion 17a of the engine cover 17, so as to spray the atomized liquid 9 onto the material container 5 in the direction of travel R.

[0045] like Figure 1 As shown, the spraying device 8 includes a hose reel 18, which is positioned within the engine compartment 11. The hose reel 18 is connected to the pump 14 via a pipe 15. Using the hose reel 18, the nozzle 16 can be pulled out from the cover 17 to, for example, clean the paver 2. Alternatively, Figure 1 The spraying device 8 shown can also be configured with a simplified structure, without the hose reel 18, so that the nozzle 16 is permanently mounted on the cover 17 or fixedly arranged thereon.

[0046] like Figure 1 As shown, a spray pattern 19 formed by the atomized liquid 9 can be formed below the cooling airflow K flowing from the engine hood 17. This can further enhance the effect of keeping the steam 7 away from the operator workstation 10. The cooling airflow K can be guided along the driving direction R by at least one flow rib formed on the hood 17, thereby covering the spray pattern 19.

[0047] For the material conveying process, paver 2 is equipped with a push rod 50, on which the rear wheels of the idling truck can rest to allow the paving material to be poured into the material container 5. During the material conveying process, paver 2 can push the truck along the direction of travel R.

[0048] Figure 2 A road construction machine 1 is shown, which is in the form of a paver 2 and has a spraying device 8 in the form of a drone 20. The drone 20 is equipped with a storage 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 conveying liquid 9 from the storage tank 13' to the nozzle 16.

[0049] The drone 20 can fly (especially during material transport) above the material container 5 to spray the atomized liquid 9 onto the rising steam 7 from above, thereby binding the asphalt aerosol contained in the steam 7 with the continuously forming droplets, preventing it from spreading further.

[0050] exist Figure 2 The spraying device 8', configured as a drone 20, can serve as an auxiliary drone, in conjunction with... Figure 1 The spraying device 8 shown is used in conjunction with this device. Figure 2 As shown, a workstation 22 for the drone 20 is located on the roof 21 of the paver 2, and this workstation specifically serves as a charging station. When it is not necessary to spray steam 7, the drone 20 can remain in the workstation 22. When needed, such as when it is to act as an auxiliary drone to support the spraying device 8, the drone 20 will leave the workstation 22.

[0051] also, Figure 2 A measuring device 23 is shown, arranged in the area of ​​the material container 5, for detecting the aerosol load in the rising steam 7. The measuring device 23 may be located on the engine hood 17 of the paver 2. Alternatively, the drone 20 may include the measuring device 23 for detecting the aerosol load in the rising steam 7.

[0052] Figure 2 The use of the spraying device 8' shown (which exists as drone 20) and / or Figure 1 The use of the spraying device 8 shown can be controlled based on the measurement values ​​of the measuring device 23. The measuring device 23 can also be configured to detect air humidity so that when the detected air humidity is relatively high, the drone 20 is not used to spray the rising steam 7.

[0053] Figure 3 The front view shows the material hopper halves 24a and 24b of the material container 5, which are folded upwards to move the paving material from the side areas to the center. The material hopper halves 24a and 24b contain nozzles 25a and 25b through which atomized liquid 9 is sprayed into the receiving area of ​​the material container 5. Figure 3 The double arrows P and P' in the diagram schematically indicate that nozzles 25a and 25b can be adjusted to maintain the horizontal spraying of the atomized liquid 9. In particular, nozzles 25a and 25b can be automatically adjusted to better prevent asphalt aerosol from escaping from the material container 5.

[0054] Figure 4 A paver 2 is shown, in which the material container 5 exists as an accessory container 26, which is inserted into the material hopper of the paver 2. Because the sidewalls of the accessory container 26 are higher than the material hopper, it is suitable for receiving a larger volume of paving material.

[0055] The paving material falls from the unloading belt 27a of the rotary conveyor (configured as the first-running feeder 35) into the accessory container 26, causing steam 7 to be generated in the unloading area.

[0056] Attachment container 26 is configured as follows Figure 4 The spraying device 8'' shown is used to spray the steam 7 rising from it. For this purpose, the accessory container 26 includes nozzles 29, such as... Figure 4 As shown, the nozzle is formed on the rear wall 30 of the accessory container 26. The spraying device 8'' formed by the accessory container 26 is powered by the generator 31 of the paver 2 via wire 32. Figure 4 As shown, the pump 14'' integrated in the accessory container 26 can be electrically driven by the generator 31 via the wire 32, thereby conveying the liquid 9 from the storage tank 13'' located in the accessory container 26 to the nozzle 29.

[0057] It is conceivable that the accessory container 26 may not be equipped with a spraying device 8''. In this case, it can be used through... Figure 2 The drone 20 shown sprays steam 7 rising from accessory container 26, and / or pulls nozzle 16, which is connected to hose reel 18, out of cover 17 and attaches it to the rear wall 30 of accessory container 26 for spraying steam.

[0058] It is conceivable that the nozzle 29 disposed in the accessory container 26 can be connected to the hose of the hose reel 18, i.e. Figure 1 The spraying device 8 can be connected to the nozzle 29 of the accessory container 26 for spraying steam 7.

[0059] Figure 5 Road construction machinery 1 is shown, which takes the form of a material supply vehicle 35 and is configured to supply paving material to a paver 2 that follows it in the direction of travel R, thereby forming a paving train E (see [reference]). Figure 4 ).

[0060] Figure 5 The feed trolley 35 includes a material container 5'. The paving material is conveyed from the material container 5' in the opposite direction to the travel direction R of the feed trolley 35 via a material conveyor belt assembly, which is in the form of a rotary conveyor. The material conveyor belt assembly of the feed trolley 35 includes a conveyor belt 27b, through which the paving material is conveyed from the material hopper 5' and to a discharge belt 27a configured as a rotary belt. Atomized liquid 9 can be sprayed onto the steam 7 rising from the material container 5' via a spraying device 8''' mounted on the feed trolley 35, particularly when the paving material is dumped into the material container 5' by a truck pushed by a pusher 50'.

[0061] like Figure 5 As shown, the spraying device 8''' is also configured to spray the atomized liquid 9 onto the transition area 40 formed between the conveyor belt 27b and the unloading belt 27a configured as a rotating belt, since more steam is also generated in this area.

[0062] In addition, according to Figure 6 In the embodiment shown, the spraying device 8''' can be configured to spray atomized liquid 9 at the outlet of the unloading belt 27a to spray vapor 7 present there, rising from the material container 5 of the following paver 2.

Claims

1. A road construction machine (1) configured as a paver (2) or configured as a feeder (35) for supplying paving material to said paver (2), wherein, The road construction machinery (1) includes a material container (5, 5') for receiving paving materials and at least one spraying device (8, 8', 8'', 8''') for atomizing liquid (9), characterized in that the spraying device (8, 8', 8'', 8''') is configured as follows: a) Used to spray asphalt vapor (7) rising from the material container (5, 5'); b) For spraying asphalt vapor (7) rising from the area formed on the material conveyor belt device, which transports paving material from the material container (5, 5') in the opposite direction (R) to the travel direction of the road construction machinery (1); and / or c) Used to spray asphalt vapor (7) rising from the material container of the paver (2) following the road construction machinery (1).

2. The road construction machinery according to claim 1, characterized in that, The spraying device includes at least one first nozzle (25a, 25b), which is formed directly on and / or attached to the material container.

3. The road construction machinery according to claim 1, characterized in that, The material container exists in the form of a detachable accessory container (26) or in the form of a material hopper with tiltable hopper halves (24a, 24b), which are permanently mounted on the road construction machinery (1).

4. The road construction machinery according to claim 2, characterized in that, The material container exists in the form of a detachable accessory container (26) or in the form of a material hopper with tiltable hopper halves (24a, 24b), which are permanently mounted on the road construction machinery (1).

5. The road construction machinery according to claim 1, characterized in that, The spraying device includes at least one second nozzle (16) which is attached to the engine hood (17) of the road construction machinery (1).

6. The road construction machinery according to claim 2, characterized in that, The spraying device includes at least one second nozzle (16) which is attached to the engine hood (17) of the road construction machinery (1).

7. The road construction machinery according to claim 5, characterized in that, The second nozzle (16) can be used to form a spray pattern located below the cooling airflow (K) that exits from the engine hood (17) along the direction of travel (R) and is above the material container (5,5').

8. The road construction machinery according to any one of claims 2, 4 to 7, characterized in that, The first nozzle (25a, 25b) and the second nozzle (16) are adjustable to form different spray patterns and / or different airflow directions.

9. The road construction machinery according to any one of claims 1 to 7, characterized in that, The spraying device (8, 8', 8'', 8''') includes at least one storage tank (13, 13', 13'') and a pump (14, 14', 14'').

10. The road construction machinery according to claim 9, characterized in that, The storage tanks (13, 13', 13'') and the pumps (14, 14', 14'') can be housed in the engine compartment (11) of the road construction machinery (1) or can be detachably attached to the road construction machinery (1) as a modification kit without the use of tools.

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

12. The road construction machinery according to any one of claims 1 to 7, characterized in that, The material conveyor belt device exists as a longitudinal conveying device of the paver (2) or as a rotary conveying device of the feeder (35), wherein the spraying devices (8, 8', 8'', 8''') are configured to spray on the transition area (40) formed between the continuously arranged conveyor belts (27a, 27b) of the rotary conveyor, and / or are configured to spray on the unloading area formed at the outlet of the conveyor belt (27a) of the rotary conveyor, wherein the rotary conveyor is configured as an unloading belt.

13. The road construction machinery according to any one of claims 1 to 7, characterized in that, The spraying device (8, 8', 8'', 8''') includes: a temperature control unit for regulating the temperature of the liquid; and / or a measuring device (23) for detecting the aerosol load in at least one sprayable area.

14. The road construction machinery according to any one of claims 1 to 7, characterized in that, The spraying device is a drone (20).

15. The road construction machinery according to any one of claims 1 to 7, characterized in that, The spraying device includes: at least one hose reel (18); and a nozzle (16) connected to a hose received on the hose reel (18).

16. A paving train having at least one road construction machine (1) according to any one of the preceding claims.

17. The paving train according to claim 16, characterized in that, The road construction machinery (1) has at least one paver (2) and at least one material supply vehicle (35), which travels in front of the paver (2) in the production direction (R) and supplies paving materials to the paver (2).

18. A method for a material conveying process for supplying paving material to a paver (2) and / or a material supply vehicle (35), characterized in that, During material transport, the atomized liquid (9) is sprayed at least temporarily onto the asphalt vapor (7) rising in the material containers (5,5') of the paver (2) and / or the feeder (35), and / or onto the asphalt vapor (7) rising in the area formed at the material conveyor belt device that transports the paving material from the material containers (5,5').

19. The method according to claim 18, characterized in that: During material transport, the following is used: a. At least one spraying device arranged on the paver (2); b. At least one spraying device arranged on the feed vehicle (35); and / or c. At least one spraying device configured as a drone (20).

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