Road finishing machine with suction device

Abstract

The invention relates to a road finishing machine (1), comprising: a screed plate (7); a hopper (4); a longitudinal conveying device (5); a transverse distribution screw (10); and at least one suction device (20), the suction device (20) having at least one suction line (18a, 18b, 18c, 18d) implemented on its inlet side, which is configured to suck away aerosol formed during the transverse distribution of paving material (6), wherein the suction line (18a, 18b, 18c, 18d) is at least partially arranged at a channel plate (25) of a transverse distribution channel (17), at least partially arranged at a pre-scraper (26) of the transverse distribution channel (17), at least partially arranged at a front side (16) of a screed plate base (11) facing the transverse distribution screw (10), and / or at least partially arranged at an external control platform (14) of the screed plate (7).

Description

Technical Field

[0001] The present invention relates to a road finishing machine. Background Art

[0002] Road finishing machines are used in practice to produce asphalt-containing road surfaces. During the laying of bituminous road construction materials, aerosol-containing asphalt is formed due to the high process temperatures and affects the air quality in the area around the road finishing machine. Therefore, in known road finishing machines, suction systems for sucking away aerosols are used to prevent the aerosol concentration in the air from reaching critical values.

[0003] In known suction systems, aerosols are usually sucked away in the vicinity of the center of the machine, i.e. in the middle of the outlet of the scraper belt, which delivers the paving material from the hopper of the road finishing machine to its screed plate. At the outlet of the scraper belt, the paving material is discharged from the ends of the scraper belt into the region of the transverse distributor and distributed in front of the screed plate of the road finishing machine by transverse distribution screws arranged therein. However, during the transverse distribution of the paving material to the respective outer sides of the screed plate, aerosols are still formed after the paving material has laterally left the area below the scraper belt. However, the aerosols formed along the outer parts of the screed plate are no longer adequately collected by conventional centrally arranged suction systems.

[0004] EP 0 843 044 A1 discloses a road finishing machine with a ventilation system for sucking aerosols, in particular rising vapors, from the area above the transverse distributor system. The suction device used for this purpose comprises in particular a suction device part which covers the screw space at least at the top and optionally extends laterally to an extendable pull-out part arranged at the screed. A problem with this suction device is that the screed operator's field of vision into the transverse material distribution area is greatly restricted. In addition, the assembly of the suction device is inconvenient, in particular if a pull-out part and / or a transverse screed attachment for widening the paving width is used at the screed. Summary of the invention

[0005] It is an object of the present invention to provide a road finishing machine with a suction device, whereby the above-mentioned disadvantages associated with the prior art can be reduced.

[0006] This object is achieved by the road finishing machine according to the embodiment of the present application. Advantageous further improvements are given by the technical features according to the various embodiments of the present application.

[0007] The invention relates to a road finishing machine comprising a screed for producing a paving layer from a paving material, in particular a screed for producing a paving layer from a bituminous bonded paving material. The road finishing machine according to the invention also comprises a hopper for receiving the paving material and a longitudinal conveying device, which is configured to convey the paving material from the hopper to the screed in the opposite direction of travel of the road finishing machine.

[0008] The road finishing machine according to the invention further comprises at least one transverse distribution screw, which is configured to distribute the paving material delivered to the screed plate by the longitudinal conveying device in front of the screed plate transversely to the travel direction. The transverse distribution screw is mounted in front of the screed plate base body of the screed plate in the travel direction, preferably also in a transverse distribution channel, which is optionally arranged in front of the screed plate for transverse distribution of the paving material, the transverse distribution channel being formed at least partially by a channel plate supported at the chassis of the road finishing machine and by a pre-scraper attached transversely to the side of the screed plate base body of the screed plate in front of the screed plate transversely to the travel direction.

[0009] Furthermore, the road finishing machine according to the invention comprises at least one suction device having at least one suction line formed at its inlet side, which is configured to suck away aerosols formed during the transverse distribution of the paving material, in particular from the area along the transverse distribution channel. Above all, aerosols can thereby be sucked away from the area outside the transverse distribution channel.

[0010] According to the invention, the suction line is at least partially arranged at the channel plate of the transverse distribution channel, at least partially arranged at the pre-scraper of the transverse distribution channel, at least partially arranged at the front side of the screed base facing the transverse distribution screw, and / or at least partially arranged at an external control platform of the screed.

[0011] In other words, in the present invention, the screed base, the channel plate, the pre-scraper and / or the external control platform of the screed are used as a basis for attaching the suction line. Thus, the suction line according to the invention is arranged directly at the screed part of the screed arranged in any way and / or at the assembly of the transverse distribution channels optionally arranged in front thereof.

[0012] The road finishing machine according to the invention thus yields several advantages relevant to practice, in particular due to the suction system adopted thereat according to the invention. On the one hand, the suction device can be installed without much effort, since its suction line is attached directly to the structure of the screed. The invention also provides the possibility of compactly installing the suction device on the road finishing machine. In addition, due to its minimalist design, the suction device can be manufactured together at lower costs compared to conventional solutions. The suction device can also be flexibly adapted to the required working width. By arranging the suction line directly at the external control platform, in particular at the components for its assembly (for example at the side thrusters, at the screed base, at the channel plate and / or at the pre-scraper), extending directly to access the paving material transported laterally in front of the screed, aerosol suction along the suction line can be performed particularly effectively.

[0013] Preferably, the suction line is arranged at least partially on the side of the channel plate of the transverse distribution channel facing the transverse distribution screw and / or at least partially on the side of the pre-scraper plate of the transverse distribution channel facing the transverse distribution screw.

[0014] It is conceivable that the road finishing machine comprises a first suction device comprising a suction line for the front side of the channel plate, pre-scraper and / or screed base body and / or a second suction device comprising a suction line of the external control platform. The two suction devices are preferably independently controllable.

[0015] Preferably, the suction line is a pipe extending transversely to the direction of travel. It is conceivable that the pipe has a circular pipe cross section, but other cross-sectional geometries are also conceivable. The suction line is compactly formed in the form of a pipe at the access plate, at the pre-scraper, at the screed base and / or at the external control platform, so that the screed operator can easily see the lateral distribution of the paving material over the entire set paving width, regardless of which side of the screed the screed is located on. The pipe can have an inner pipe diameter of only a few centimeters, for example about 5 to 10 centimeters.

[0016] According to one embodiment of the invention, the suction line is at least partially formed in the form of a rectangular tube. By means of this component geometry, the suction line can be fastened in a particularly stable manner to the channel plate, the pre-scraper, the screed base and / or the external control station. Furthermore, the suction line in the form of a rectangular tube also provides a very robust structure for the other geometries that support it, in particular the structure of the transverse distribution channels that are used as the basis for the suction line.

[0017] Irrespective of the shape of such a suction line, the suction line can be arranged in a foreground position or in a foreground position along the direction of travel relative to the side of the component supporting the suction line. This means that the suction line can be formed as a line that is visible externally along the channel plate, pre-scraper, screed base and / or at the external control platform, in particular along the structure of the thruster support of the thruster, or formed as integrated therein, whereby the observer can only see the suction opening at these structures. In the latter design, the suction line will therefore extend invisibly within the structure of the channel plate, pre-scraper, screed base and / or thruster support. The suction line is thus installed in a completely protected manner and allows the screed operator to observe the lateral material distribution without restriction.

[0018] Preferably, the suction line is made of a corrosion-resistant metal. In particular, the suction line is made of a light metal, such as aluminum, to facilitate widening of the screed. It is conceivable that the suction line is made of the material used for its supporting components, i.e. of the material of the channel plate, the pre-scraper and / or the front side of the screed base body, so that the suction line is formed to be optically less noticeable.

[0019] The suction line is formed in particular in the form of a suction rail. The latter can be integrated in a particularly compact manner in the screed structure and the attachments formed thereon. It is conceivable that the suction rail extends along the entire width of the arranged transverse distribution channel. Thus, the aerosol can be perfectly sucked away over the entire width of the transverse distribution channel, in particular to the outside of the screed.

[0020] A particularly compact design can result from a suction line comprising a wall which is at least partially formed as an integral part of a channel plate, a pre-scraper, a front side of a screed base and / or a component of an external control platform, for example a thruster support. According to this variant, the suction line can be formed on the corresponding supporting side of the channel plate, the pre-scraper, a component of an external control platform and / or a screed base, whether in a form-integrated manner in a foreground position or in a background position in the direction of travel. Thereby, the compact design of the suction line can be further improved. At the external control platform, the suction line can be formed as part of the thruster support, in particular integrated therein.

[0021] Preferably, the suction line is formed at least partially along the upper edge of the channel plate, along the upper edge of the pre-scraper and / or along the upper edge of the thruster bracket of the external control platform. Therefore, the suction line extends directly along the upper boundary of the transverse distribution channel, so that the aerosol or vapor formed therein can be better directly sucked away where they appear. In addition, the arrangement at the upper edge of the channel plate and / or the pre-scraper can be a useful directional aid for the assembly of the transverse distribution channel. The suction line can also be formed on the front side along the upper edge of the support assembly in the direction of travel (that is, formed on the front side as an accessory), or integrated into the front side (that is, in the internal structure of the support assembly).

[0022] In particular, the suction lines formed at the front side of the screed base body, at the external control platform, at the channel plate and / or at the pre-scraper are dimensioned so that the transverse distribution channels remain essentially uncovered when viewed from above. This means that the suction lines are substantially smaller in size in the direction of travel than the transverse distribution channels, so that the operator can perfectly observe the flow of laterally conveyed material in the transverse distribution channels during paving operation of the road finishing machine.

[0023] Preferably, the suction line forms an exhaust guide for the aspirated aerosol along the transverse distribution channel, which exhaust guide is arranged transversely to the direction of travel. The exhaust guide can extend to the outside of the ironing plate and / or to the center of the ironing plate. Along the exhaust guide, the suction line can have a plurality of suction openings, so that the exhaust gas flow conveyed in the exhaust guide is formed by a plurality of inlet flows.

[0024] Advantageously, the suction line comprises a plurality of interconnectable line sections, preferably arranged in series transversely to the direction of travel, whose coupling ends are formed in the region of the separation points of adjacently attached channel plates and / or adjacently attached pre-scrapers. Preferably, the channel plates and / or pre-scrapers, including the suction line formed thereat, can be assembled without tools (i.e. without any further assistance). This facilitates their assembly at the construction site.

[0025] It is conceivable that the suction device, but at least individual components thereof, can be used as a retrofit kit to be arranged on the road finishing machine according to the invention.

[0026] Adjacent channel plates and / or pre-scrapers can be built relative to each other via the connection ends of the suction line. For the assembly of the channel plates and / or pre-scrapers, in this variant, the connection ends of the suction line are present as fastening means, whereby assembly becomes easier for the operator. It is conceivable that the connection ends of the suction lines of adjacent channel plates and / or pre-scrapers can be partially inserted into each other, whereby an overlap is formed between the connection ends.

[0027] According to one variant, the channel plate and / or the pre-scraper can be automatically moved transversely to the direction of travel according to the set paving width. The suction line attached thereto can be particularly formed to be telescopic, so that the suction line can automatically adapt to the extension of the transverse distribution channel.

[0028] Preferably, the suction line comprises a plurality of channels as suction openings. The suction openings can be formed at least partially along the suction line to the outside of the screed. The channels can in particular have the form of grooves. Along the suction line, a plurality of parallel grooves can be at least partially grouped, or they can be formed continuously.

[0029] According to one embodiment, the suction line comprises at least one closing mechanism for opening and closing at least one of the suction openings formed therein. It is conceivable that, by means of the closing mechanism, in order to selectively suck away aerosol in the region of the outer control platform of the screed, the suction openings adjacent thereto are arranged to be open, while other suction openings of the suction line located in the region further from the center of the screed structure are selectively closed by means of the closing mechanism, so that a greater suction effect is formed in the region of the outer control platform.

[0030] According to a variant of the invention, the suction opening is formed at different sides of the suction line. It is conceivable that the suction opening is formed at the suction line along a side facing the transverse distribution screw in the direction of travel, along a side pointing downwards towards the subsoil and / or along a side pointing upwards.

[0031] Advantageously, the suction device comprises at least one fan connected to the suction line, which fan is arranged, for example, in the region of an external control platform of the screed, in particular on a side thruster formed there for setting the paving width. Preferably, the fan power can be set by the screed operator directly at the external control platform, for example via a control device attached to this platform. The screed operator can thus adjust the fan power himself, corresponding to the aerosol development occurring during the paving operation.

[0032] It is conceivable that the suction device comprises at least one fan, which is arranged in the region of the chassis of the road finishing machine, for sucking away the aerosols via a suction line formed on the front side of the screed base body, and / or at least one further independent fan for sucking away the aerosols via a suction line formed at the channel plate, the pre-screed plate and / or at the external control platform. In particular, the latter part of the suction device can be provided to the customer as a conversion kit for large screed widths. As a result, the fan power can also be well distributed over the entire working width, so that the aerosols can be sucked away effectively. The fan mentioned in the second alternative can be mounted directly at the external control platform.

[0033] Preferably, the suction device comprises at least one exhaust line on the outlet side, which is fastened to the roof structure of the external control platform of the screed plate for discharging the sucked-away aerosol. Thus, the structure of the suction device can be designed essentially in the outer region of the screed plate, so that exhaust ducts erected above the chassis of the road finishing machine and the roof structure of the driver's control platform can be optionally omitted.

[0034] According to one embodiment, the suction device comprises at least one activated carbon filter unit. As a result, the air sucked away containing aerosols can be purified. As a result, the quality of the working environment of the operator of the road finishing machine can be further improved. The activated carbon filter unit can be formed at the external control platform so that the air discharged from the exhaust line at the external control platform is free of aerosols.

[0035] It is conceivable that the suction line of the channel plate arranged closest to the chassis of the road finishing machine is configured to be connected to the ventilation line formed at the chassis of the road finishing machine. Therefore, the suction line can be connected to the suction system installed at the chassis of the road finishing machine.

[0036] Preferably, the suction device comprises a spray device configured to spray a fluid such as water vapor above the transverse distribution channel into the aerosol former formed therein to reduce the concentration of the aerosol. It is conceivable that the spray device comprises at least one nozzle arranged directly at the inhalation line.

[0037] According to a variant of the invention, the suction device comprises at least one sensor unit, based on the measurement results of which a dynamic fan speed adaptation can be performed. The sensor unit can include a sensor configured to detect an aerosol content in its surrounding area, which aerosol content can be continuously available as an actual value for a control loop for performing the dynamic fan speed adaptation. The dynamic fan speed control can in particular respond to a detected temperature of the paving material. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be described in more detail with reference to exemplary embodiments according to the following drawings. In the drawings:

[0039] Figure 1 A road finishing machine for producing a paving layer is shown,

[0040] Figure 2 A perspective view of a road finishing machine with a screed arranged as a retractable screed is shown,

[0041] Figure 3 shows a schematic plan view of a retractable screed for a road finishing machine,

[0042] Figure 4 Shows Figure 3 A retractable ironing board having a pull-out part extending laterally,

[0043] Figure 5 A screed is shown with an extended pull-out part and attachments attached transversely thereto for producing the desired working width,

[0044] Figure 6 A schematic diagram showing the external control platform of the screed, and

[0045] Figure 7 The indicated arrangement variants of the suction line on its support assembly are schematically shown.

[0046] Identical parts are always provided with the same reference symbols in the figures. DETAILED DESCRIPTION

[0047] Figure 1 A road finishing machine 1 for producing a paving layer 2 on a subsoil 3 is shown. The road finishing machine 1 comprises a hopper 4 at the front in the direction of travel R, from which paving material 6 received is conveyed to a screed 7 of the road finishing machine 1 by a longitudinal conveying device 5, counter to the direction of travel R of the road finishing machine 1. The longitudinal conveying device 5 is arranged in a chassis 8 of the road finishing machine 1 and comprises a plurality of conveying means 5, such as a conveying means 5 for conveying a paving material 6 received from the hopper 4. Figure 3 The scraper belt 9 is shown.

[0048] The paving material 6 is transferred from the scraper belt 9 of the longitudinal conveying device 5 to a transverse distribution screw 10 arranged in front of the screed plate 7. The transverse distribution screw 10 is designed to distribute the paving material 6 in front of the screed plate 7.

[0049] Figure 2 The road finishing machine 1 is shown in a perspective view. The screed 7 comprises a screed base body 11 and a pull-out part 12 which can be extended laterally in order to set a desired working width B of the paving layer 2 to be produced. Figure 2 The left-hand pull-out part 12 shown has a side thruster 13, which is used to set the working width B of the newly laid paving layer 2. At the side thruster 13, an external control platform 14 is arranged, which includes a control device 15 for the screed operator. The side thruster 13 includes a side thruster support 40, which can be used to construct the external control platform 14. At the external control platform 14, the screed operator can control and / or monitor the operation of the screed 7. It is particularly convenient that the screed operator can monitor the lateral distribution of the paving material 6 in front of the screed 7 (i.e. also in front of the pull-out part 12).

[0050] Figure 3The schematic diagram shows a plan view of a screed plate 7 of a road finishing machine 1. The paving material 6 discharged by the scraper belt 9 in front of the screed plate base 11 of the screed plate 7 is distributed by the transverse distribution screws 10 along the front side 16 of the screed plate base 11. The rear wall 22 of the chassis 8 of the road finishing machine 1 forms a transverse distribution channel 17 for the transverse distribution screws 10 together with the front side 16 of the screed plate base 11. This transverse distribution channel 17 can be further expanded to the side corresponding to the widening of the screed plate 7. This is in particular the case of a screed plate 7, which is a screed plate 7. Figure 4 and Figure 5 Displayed in.

[0051] Figure 3 It is further shown that a suction line 18a is formed at the front side 16 of the screed base body 11. The suction line 18a comprises a plurality of suction openings 19 which are configured to suck away aerosol formed in the transverse distribution channels 17 during paving operation.

[0052] exist Figure 3 In the embodiment of the present invention, the suction line 18a is constructed in the form of a suction rail directly at the screed base body 11. It is thus presented in a particularly compact design and allows the screed operator to have an unrestricted view of the transverse distribution channels 17.

[0053] The suction line 18a can be configured as a suction end of a suction device 20 mounted at the chassis 8 of the road finishing machine 1. For example, the suction line 18a can be connected to a fan 23 via an exhaust guide 21. The exhaust guide 21 can also have a different extension, for example, it can extend over the central screw suspension 24 to the fan 23.

[0054] at last, Figure 3 A spray device 37 with a nozzle 38 is schematically shown for atomizing the aerosol in the transverse distribution channel 17. The spray device 37 can be configured to generate water vapor.

[0055] Figure 4 The schematic plan view shows the screed plate 7 with the extended pull-out part 12. By widening the screed plate 7 in this way, a larger working width B can be produced for the newly produced paving layer 2. Figure 4 It is shown that the transverse distribution channels 17 extend laterally beyond the screed base body 11. Along the widened transverse distribution channels 17, the paving material 6 discharged by the scraper belt 9 can be conveyed to the outside of the pull-out element 12. Figure 4 The transverse distribution screw 10 in the transverse distribution channel 17 in the housing is also extended.

[0056] The transverse distribution channel 17 arranged in front of the screed plate 7 is formed by a channel plate 25 supported at the chassis 8 of the road finishing machine 1 and by a pre-scraper attached laterally to the screed base 11 at its outer region transversely to the travel direction R. Depending on the set working width B, the channel plate 25 and the pre-scraper 26 can be extended further to the side to extend the transverse distribution channel 17. The same applies to the transverse distribution screw 10.

[0057] also, Figure 4 It is shown that the suction line 18a formed at the front side 16 of the screed base body 11 is extended by further suction lines 18b, 18c to suck the aerosol away from the transverse distribution channel 17. Figure 4 The suction lines 18a, 18b, 18c are formed along the transverse distribution channel 17 at a side 27 of the channel plate 25 facing the transverse distribution screw 10, at a side 28 of the pre-scraper 26 facing the transverse distribution screw 10, and at the front side 16 of the screed base 11.

[0058] As an integral part at the channel plate 25 and the pre-scraper plate 26, in particular the suction lines 18b, 18c allow the screed operator's sight into the transverse distribution channel 17 without any obstruction.

[0059] Figure 5 A screed 7 is shown with an extended pull-out part 12 and attachments 29 fastened transversely thereto, which serve to produce a very large working width B for a paving layer 2 . Figure 5 It is shown that a transverse distribution channel 17 is formed along the screed base 11 , the pull-out part 12 and the attachments 29 fixed thereto transversely to the travel direction R. Corresponding to the working width B, further channel plates 25 and pre-scrapers 26 are installed to extend the transverse distribution channel 17 further.

[0060] Figure 5 It is further shown that the suction lines 18b, 18c formed at the channel plate 25 and the pre-scraper 26 are extended to be able to suck away the aerosol along the entire extension of the transverse distribution channel 17. At the separation point 30a of the channel plate 25 and at the separation point 30b of the pre-scraper 26, the coupling ends 31 of the suction lines 18b, 18c are connected to each other.

[0061] Figures 3 to 5 There is shown a suction line 18d arranged at the thruster 13 of the external control platform 14. The suction line 18d may be configured as a part of a suction device provided separately for the external control platform 14.

[0062] Figure 6 The schematic diagram shows Figure 2The external control platform 14 has a roof structure 32 for the screed operator P. The external control platform 14 shows the screed operator P standing on a gangway 33 extending behind the screed 7 above the paving layer 2. The gangway 33 is also Figure 1 The fan 34 is provided at the side thruster 13. The fan 34 can be connected to the suction lines 18b, 18c, 18d to suck the aerosol from the lateral distribution channel 17. Figure 6 Further shown is the exhaust line 35, which is Figure 6 Schematically represented as a dotted line in FIG. 1 , the aspirated aerosol is discharged from the fan 34 above the ceiling structure 32 . Figure 6 Also shown is an activated carbon filter unit 36 ​​for purifying aerosols sucked away from the transverse distribution channel 17 .

[0063] The suction lines 18a, 18b, 18c, 18d are mounted directly and integrally at the side thrusters 13 of the external control platform 14, at the screed base 11, the channel plate 25 and / or the pre-scraper 26 to form a favorable inlet geometry of the suction device 20 at the road finishing machine 1. In particular, its more compact design than existing designs allows the screed operator to have a perfect view into the transverse distribution channel 17, regardless of how far it extends in front of the screed 7. The integral design of the suction lines 18a, 18b, 18c, 18d reduces the manufacturing and assembly work at the road finishing machine 1 as a whole.

[0064] Figure 7 It is schematically shown that the suction lines 18a, 18b, 18c, 18d can be formed in the assembled state according to the left figure, or in the foreground position (this means as a visible attachment at the corresponding support parts (i.e. at the channel plate, the pre-scraper, at the screed base 11 and / or at the thruster bracket 40)), or can be formed according to Figure 7 The right figure is formed to be integrated into the structure of the supporting component.

[0065] Suction pipes 18a, 18b, 18c, 18d are Figure 7 The suction lines 18a, 18b, 18c, 18d are arranged at a height flush with the upper edge 38 of the channel plate 25 and the pre-scraper 26. The suction lines 18a, 18b, 18c, 18d thus together form a frame substantially surrounding the transverse distribution channel 17 in order to suck away the aerosol formed in the transverse distribution channel 17. Figure 7 The arrows pointing in the direction of the inhalation lines 18 a , 18 b , 18 c , 18 d indicate the sides on which the aerosol can be sucked off.

Claims

1. A road finishing machine (1), comprising: A screed plate (7) for producing a paving layer (2) from paving material (6); a hopper (4) for receiving the paving material (6); a longitudinal conveying device (5) configured to convey the paving material (6) from the hopper (4) to the screed plate (7) counter to the travel direction (R) of the road finishing machine (1); a transverse distribution screw (10) configured to distribute the paving material (6) conveyed to the screed plate (7) by the longitudinal conveying device (5) transversely to the travel direction (R) in front of the screed plate (7), wherein the transverse distribution screw (10) is mounted in front of a screed plate base (11) of the screed plate (7) along the travel direction (R) in a transverse distribution channel (17), the transverse distribution channel (17) being arranged for transverse distribution of the paving material (6) in front of the screed plate (7); and at least one suction device (20), the suction device (20) The invention relates to a road finishing machine having at least one suction line (18a, 18b, 18c, 18d) formed at its inlet side, the suction line (18a, 18b, 18c, 18d) being configured to suck away aerosol formed during the transverse distribution of the paving material (6) from an area along the transverse distribution channel (17), characterized in that the transverse distribution channel (17) is at least partially formed by a channel plate (25) supported on the chassis (8) of the road finishing machine (1) and by a pre-scraper (26) of a screed base (11) to which the screed (7) is laterally attached in front of the screed (7) transversely to the travel direction (R), and the suction line (18a, 18b, 18c, 18d) is at least partially arranged at the channel plate (25) of the transverse distribution channel (17) and / or at least partially arranged at the pre-scraper (26) of the transverse distribution channel (17).

2. The road finishing machine according to claim 1, characterized in that: The suction lines (18a, 18b, 18c, 18d) are pipes extending transversely to the travel direction (R), and / or the suction lines (18a, 18b, 18c, 18d) are formed in the form of rectangular pipes.

3. The road finishing machine according to claim 1, characterized in that: The suction line (18a, 18b, 18c, 18d) comprises a wall which is at least partially formed as the channel plate (25) and / or the pre-scraper (26).

4. The road finishing machine according to claim 1, characterized in that: The suction line (18a, 18b, 18c, 18d) is at least partially along the upper edge of the channel plate (25) and / or along the upper edge of the pre-scraper plate (26).

5. The road finishing machine according to claim 1, characterized in that: The suction lines (18a, 18b, 18c, 18d) formed at the channel plate (25) and / or at the pre-scraper (26) are dimensioned so that the transverse distribution channel (17) is not covered when viewed from above.

6. The road finishing machine according to claim 1, characterized in that: The suction lines (18a, 18b, 18c, 18d) form exhaust air guides which are oriented transversely to the direction of travel (R) along the transverse distribution channel (17).

7. The road finishing machine according to claim 1, characterized in that: The suction line (18a, 18b, 18c, 18d) comprises a plurality of interconnectable line sections, the coupling ends (31a, 31b) of which are formed in the region of the separation points (30a, 30b) of the channel plates (25) attached to one another and / or in the region of the separation points (30a, 30b) of the pre-scraper (26).

8. The road finishing machine according to claim 7, characterized in that: Adjacent channel plates (25) and / or pre-scraping plates (26) are assembled via the connecting ends (31a, 31b) of the suction pipes (18a, 18b, 18c, 18d).

9. The road finishing machine according to claim 1, characterized in that: The suction line (18a, 18b, 18c, 18d) comprises a plurality of channels as suction openings (19).

10. The road finishing machine according to claim 9, characterized in that: The suction line (18a, 18b, 18c, 18d) comprises at least one closing mechanism for opening and closing at least one of the suction openings (19) formed thereon, and / or the suction openings (19) are formed at different side walls of the suction line (18a, 18b, 18c, 18d).

11. The road finishing machine according to claim 1, characterized in that: The suction device (20) comprises at least one fan (34) connected to the suction line (18a, 18b, 18c, 18d), the at least one fan being arranged in an outer control platform (14) of the screed (7) in the region of a side thruster (13) formed thereon for setting the working width.

12. The road finishing machine according to claim 1, characterized in that: The suction device (20) comprises at least one exhaust line (35) at the outlet side for discharging aerosol sucked away from the transverse distribution channel (17), the exhaust line (35) being attached to a ceiling structure (32) of an external control platform (14) of the screed plate (7).

13. The road finishing machine according to claim 1, characterized in that: The suction device (20) comprises at least one activated carbon filter unit (36).

14. The road finishing machine according to claim 1, characterized in that: The suction line (18a, 18b, 18c, 18d) of the channel plate (25) disposed closest to the chassis (8) of the road finishing machine (1) is configured to be connected to a ventilation line (22) disposed at the chassis (8) of the road finishing machine (1).

15. The road finishing machine according to claim 1, characterized in that: The suction device (20) comprises at least one spray device (37) for spraying a fluid into the transverse distribution channel (17), wherein the spray device (37) comprises at least one nozzle (38) which is attached to the suction line (18a, 18b, 18c, 18d).

16. The road finishing machine according to any one of claims 1 to 15, characterized in that The suction line (18a, 18b, 18c, 18d) is at least partially arranged at a front side (16) of the screed base (11) facing the transverse distribution screw (10), wherein the suction line (18a, 18b, 18c, 18d) comprises a wall which is at least partially formed as the front side (16) of the screed base (11), wherein the suction line (18a) formed at the front side (16) of the screed base (11) is dimensioned such that the transverse distribution channel (17) is not covered when viewed from above.

17. A road finishing machine according to any one of claims 1 to 15, characterized in that The suction line (18a, 18b, 18c, 18d) is at least partially arranged at an external control platform (14) of the screed plate (7), wherein the suction line (18a, 18b, 18c, 18d) comprises a wall which is at least partially formed as an integral part of a component of the external control platform (14), wherein the suction line (18a, 18b, 18c, 18d) is at least partially formed along an upper edge of a thruster bracket (40) of the external control platform (14), wherein the suction line (18a, 18b, 18c, 18d) formed at the external control platform (14) is dimensioned such that the transverse distribution channel (17) is not covered when viewed from above.

Images