Road finisher with height-adjustable deflector plate

Abstract

The invention relates to a road paver (1) for producing a paving layer (2) from a paving material (6). The road paver (1) comprises a paving screed (7), a longitudinal conveyor device (5) designed to transport the paving material (6) to the paving screed (7) opposite to a direction of travel (100) of the road paver (1), a transverse distributor arrangement (9) designed to distribute the paving material (6) in front of the paving screed (7) transversely to the direction of travel (100), and a deflector plate arrangement (24) arranged in front of the transverse distributor arrangement (9) in the direction of travel (100). The deflector plate arrangement (24) has a height-adjustable deflector plate (26). The invention further relates to a method for operating a road paver (1).

Description

[0001] This specification relates to a road paver and a method for operating a road paver.

[0002] Road pavers are designed to produce a paving layer from a paving material such as asphalt and usually comprise a chassis and working units arranged on the chassis, such as a material hopper, a paving screed, a longitudinal conveyor device and a transverse distributor arrangement.

[0003] A fixed deflector plate is usually arranged below the rear end of the longitudinal conveyor device. During paving, material can build up in the direction of travel of the road paver when the material is transferred from the longitudinal conveyor device to the cross distributor arrangement. This material builds up in front of the cross distributor arrangement and can lead to segregation of the paving material and soiling of the undercarriage. The fixed deflector plates known from the state of the art can only prevent this to a limited extent. Since sufficient ground clearance below the deflector plate and a sufficiently large approach angle for driving onto the transport truck must be guaranteed, the deflector plate cannot be arranged at any desired depth vertically. If the deflector plate is not arranged high enough, driving onto a transport truck can be impaired or even prevented.Damage to the deflector plate may occur when driving onto the loading ramp of the transport truck.

[0004] The object of the present invention is to reduce the segregation of the paving material upstream of the transverse distributor assembly and to reduce contamination of the undercarriage by paving material. This object is achieved by a road paver according to claim 1 or a method for operating a road paver according to claim 13.

[0005] According to a first aspect of the invention, a road paver for producing a paving layer of paving material comprises a paving screed, a longitudinal conveyor device, a transverse distribution arrangement, and a deflector plate arrangement. The longitudinal conveyor device is designed to transport the paving material to the paving screed opposite to the direction of travel of the road paver. The transverse distribution arrangement is designed to distribute the paving material transversely to the direction of travel in front of the paving screed. The deflector plate arrangement is arranged in front of the transverse distribution arrangement in the direction of travel and has a height-adjustable deflector plate.

[0006] The height-adjustable deflector plate can be designed to be adjustable in its vertical position. The height-adjustable deflector plate can be designed to be adjustable in its vertical position relative to the longitudinal conveyor device. The height-adjustable deflector plate can be designed to be adjustable in its vertical position relative to the transverse distributor arrangement.

[0007] The height-adjustable deflector plate can be designed to be vertically movable. The height-adjustable deflector plate can be designed to be vertically movable relative to the longitudinal conveyor device. The height-adjustable deflector plate can be designed to be vertically movable relative to the transverse distributor arrangement.

[0008] The height-adjustable deflector plate allows the vertical distance between the deflector plate assembly and the subgrade to be varied or adjusted. A small vertical distance between the deflector plate assembly and the subgrade can reduce the entry of paving material under the longitudinal conveyor and / or into the road paver's undercarriage. This can counteract segregation of the paving material.

[0009] The term height-adjustable is to be understood, in particular in the present application, to mean that the vertical position is adjustable.

[0010] The height-adjustable deflector plate can be designed to be continuously adjustable in height. The height-adjustable deflector plate can be designed to be continuously movable in height. The height-adjustable deflector plate can be designed to be continuously adjustable in the vertical position. The height-adjustable deflector plate can be designed to be continuously movable in the vertical position.

[0011] The paving screed may have a base screed. The paving screed may have laterally extendable extension parts, which are arranged, in particular, to the side of the base screed. The extension parts can be arranged to the left and right of the base screed, as seen in the direction of travel.

[0012] The height-adjustable deflector plate can be moved in height by at least 40 millimeters, preferably at least 100 millimeters, preferably at least 150 millimeters, preferably at least 200 millimeters. The height-adjustable deflector plate can be moved in height by at least 40 millimeters, preferably at least 100 millimeters, preferably at least 150 millimeters, preferably at least 200 millimeters, relative to the transverse distributor arrangement. The height-adjustable deflector plate can be moved in height by at least 40 millimeters, preferably at least 100 millimeters, preferably at least 150 millimeters, preferably at least 200 millimeters, relative to the longitudinal conveyor device. The height-adjustable deflector plate can be moved in height by at least 40 millimeters, preferably at least 100 millimeters, preferably at least 150 millimeters, preferably at least 200 millimeters, relative to the ground.

[0013] The deflector plate arrangement can have a width between 42 centimeters and 172 centimeters, preferably between 42 centimeters and 62 centimeters. The deflector plate arrangement can have a width between 60 centimeters and 80 centimeters. The deflector plate arrangement can have a width between 70 centimeters and 90 centimeters. The deflector plate arrangement can have a width between 115 centimeters and 135 centimeters. The deflector plate arrangement can have a width between 130 centimeters and 150 centimeters. The deflector plate arrangement can have a width between 152 centimeters and 172 centimeters. The width of the deflector plate arrangement can correspond to the width of the paving screed. The width of the deflector plate arrangement can correspond to the width of the base screed. The width of the deflector plate arrangement can correspond to the combined width of the base screed and the extending parts.The width of the deflector plate arrangement can correspond to the width of a transverse distribution channel or tunnel of the road paver. The width is defined, in particular, as the extent transverse to the direction of travel.

[0014] The height-adjustable deflector plate can have a width between 42 centimeters and 315 centimeters, preferably between 42 centimeters and 62 centimeters. The height-adjustable deflector plate can have a width between 70 centimeters and 90 centimeters. The height-adjustable deflector plate can have a width between 115 centimeters and 135 centimeters. The height-adjustable deflector plate can have a width between 130 centimeters and 150 centimeters. The height-adjustable deflector plate can have a width between 152 centimeters and 172 centimeters. The height-adjustable deflector plate can have a width between 110 centimeters and 130 centimeters. The height-adjustable deflector plate can have a width between 170 centimeters and 190 centimeters. The height-adjustable deflector plate can have a width between 230 centimeters and 260 centimeters. The height-adjustable deflector plate can have a width between 290 centimeters and 315 centimeters.The deflector plate arrangement can have several height-adjustable deflector plates. The sum of the widths of the height-adjustable deflector plates can be the values ​​mentioned above. The deflector plates can be arranged next to one another transversely to the direction of travel of the road paver, in particular adjacent to one another. The deflector plates can be offset from one another in the direction of travel. The deflector plates can be aligned with one another in the direction of travel. The width of the height-adjustable deflector plate can correspond to the width of the paving screed. The width of the height-adjustable deflector plate can correspond to the width of the base screed. The width of the height-adjustable deflector plate can correspond to the combined width of the base screed and the extending sections. The width of the height-adjustable deflector plate can correspond to the width of a transverse distribution duct or tunnel of the road paver.

[0015] The longitudinal conveyor is positioned in front of the paving screed in the direction of travel. The transverse distributor is positioned in front of the paving screed in the direction of travel. The transverse distributor is positioned downstream of the longitudinal conveyor. The road paver can also have a material hopper for receiving the paving material. The material hopper is positioned in front of the longitudinal conveyor in the direction of travel.

[0016] The road paver may have a chassis. The chassis may be arranged to the side of the longitudinal conveyor device. The chassis may comprise a left chassis and a right chassis. Left and right refer to the direction of travel of the road paver. The left chassis may be arranged to the left of the longitudinal conveyor device. The right chassis may be arranged to the right of the longitudinal conveyor device. The chassis, in particular the left and right chassis, may be crawler chassis. The chassis, in particular the left and right chassis, may comprise wheels.

[0017] The deflector plate arrangement can extend transversely to the direction of travel, in particular to the left and right, beyond the longitudinal conveyor device. The deflector plate arrangement can extend transversely to the direction of travel into the undercarriage. The deflector plate arrangement can be arranged behind the undercarriage in the direction of travel. The deflector plate arrangement can extend transversely to the direction of travel from a left lateral end to a right lateral end of the undercarriage. The deflector plate arrangement can extend transversely to the direction of travel from an outer side of the left undercarriage to an outer side of the right undercarriage.

[0018] The height-adjustable deflector plate can extend transversely to the direction of travel, particularly to the left and right, beyond the longitudinal conveyor device. The height-adjustable deflector plate can extend transversely to the direction of travel into the undercarriage. The height-adjustable deflector plate can be arranged behind the undercarriage in the direction of travel. The height-adjustable deflector plate can extend transversely to the direction of travel from a left lateral end to a right lateral end of the undercarriage. The height-adjustable deflector plate can extend transversely to the direction of travel from an outer side of the left undercarriage to an outer side of the right undercarriage.

[0019] The height-adjustable deflector plate can be vertically adjustable during operation of the road paver (particularly during a paving run), particularly relative to the longitudinal conveyor device. The vertical position of the height-adjustable deflector plate can be adjustable during operation of the road paver, particularly relative to the longitudinal conveyor device. In particular, the deflector plate arrangement can be designed such that the height-adjustable deflector plate can be lowered and raised during operation of the road paver, particularly relative to the longitudinal conveyor device.

[0020] The height-adjustable deflector plate can be at least indirectly attached to a suspension of the transverse distribution arrangement. The height-adjustable deflector plate can be attached to the suspension of the transverse distribution arrangement via an intermediate piece, for example a support structure. The height-adjustable deflector plate can be attached directly to the suspension of the transverse distribution arrangement. The suspension of the transverse distribution arrangement and the height-adjustable deflector plate can be attached to the same component. The suspension of the transverse distribution arrangement can be attached to a transverse distribution bracket. The height-adjustable deflector plate can also be attached to the transverse distribution bracket.

[0021] The height-adjustable deflector plate can be moved vertically together with the transverse distribution arrangement, in particular relative to the longitudinal conveyor device. The transverse distribution arrangement can be moved vertically, in particular relative to the longitudinal conveyor device. The height-adjustable deflector plate can be at least indirectly fastened to the transverse distribution arrangement, as a result of which the height-adjustable deflector plate can be moved together with the transverse distribution arrangement, in particular relative to the longitudinal conveyor device. The suspension of the transverse distribution arrangement can be moved vertically, in particular relative to the longitudinal conveyor device. The transverse distributor holder can be moved vertically, in particular relative to the longitudinal conveyor device. The vertical position of the height-adjustable deflector plate and the vertical position of the transverse distribution arrangement can be adjustable together, in particular relative to the longitudinal conveyor device.

[0022] The cross-distribution bracket or the suspension of the cross-distribution assembly can be attached to the paver's chassis via cylinders. The vertical position of the cross-distribution bracket, the suspension of the cross-distribution assembly, the height-adjustable deflector plate, and / or the cross-distribution assembly can be adjusted via the cylinders. The cylinders can be pneumatic, hydraulic, or electric.

[0023] The height-adjustable deflector plate can be vertically movable relative to the transverse distribution arrangement. An adjustment arrangement arranged between the height-adjustable deflector plate and the suspension of the transverse distribution arrangement can be configured to move the height-adjustable deflector plate relative to the transverse distribution arrangement. The adjustment arrangement can comprise at least one pneumatic, hydraulic, or electric cylinder. The adjustment arrangement can comprise an electric motor.

[0024] The vertical position of the height-adjustable deflector plate can be adjustable relative to the vertical position of the cross-distribution assembly. The vertical position of the height-adjustable deflector plate can be adjustable relative to the vertical position of the cross-distribution bracket.

[0025] The deflector plate arrangement can be arranged substantially, in particular in the direction of travel, between the longitudinal conveyor device and the transverse distribution arrangement. The adjustable deflector plate can be arranged substantially, in particular in the direction of travel, between the longitudinal conveyor device and the transverse distribution arrangement. The term substantially is to be interpreted in particular to mean that areas of the individual components can also overlap. The center of gravity of the deflector plate arrangement can be arranged substantially, in particular in the direction of travel, between the center of gravity of the longitudinal conveyor device and the center of gravity of the transverse distribution arrangement. The center of gravity of the height-adjustable deflector plate can be arranged substantially, in particular in the direction of travel, between the center of gravity of the longitudinal conveyor device and the center of gravity of the transverse distribution arrangement.

[0026] The paving material can be transported from the longitudinal conveyor to the transverse distribution assembly in the opposite direction of travel of the road paver. On the way to the transverse distribution assembly, the paving material can be guided over the deflector plate assembly. Specifically, the paving material falls from the longitudinal conveyor onto the deflector plate assembly, which directs the paving material to the transverse distribution assembly.

[0027] The height-adjustable deflector plate can be adjusted pneumatically. The height-adjustable deflector plate can be adjusted hydraulically. The height-adjustable deflector plate can be adjusted electrically. The height-adjustable deflector plate can be adjusted mechanically. The scraper assembly can have one or more pneumatic cylinders. The scraper assembly can have one or more hydraulic cylinders. The scraper assembly can have one or more electric motors. The scraper assembly can have one or more cranks or ratchets. The vertical position of the height-adjustable deflector plate can be adjusted pneumatically, hydraulically, electrically, and / or mechanically.

[0028] The deflector plate arrangement can have a second deflector plate. The second deflector plate can be arranged and / or designed such that it cannot be moved vertically, in particular relative to the longitudinal conveyor device. The second deflector plate can be arranged and / or designed such that the vertical position of the second deflector plate is not adjustable, in particular relative to the longitudinal conveyor device. The deflector plate arrangement can be designed such that the second deflector plate is not adjustable in height. The deflector plate arrangement can be designed such that the vertical position of the second deflector plate is not adjustable.

[0029] The second deflector plate can be arranged in front of the height-adjustable deflector plate in the direction of travel. The second deflector plate can be arranged substantially between the longitudinal conveyor device and the height-adjustable deflector plate. The second deflector plate can be arranged below the rear end of the longitudinal conveyor device.

[0030] The second deflector plate can also be designed to be height-adjustable. The deflector plate arrangement can be designed such that the second deflector plate is height-adjustable, in particular relative to the longitudinal conveyor device. The deflector plate arrangement can be designed such that the vertical position of the second deflector plate is adjustable, in particular relative to the longitudinal conveyor device.

[0031] The deflector plate arrangement can comprise a comb-shaped or grid-shaped plate. The comb-shaped or grid-shaped plate can be adjustable in height, particularly relative to the longitudinal conveyor device. The comb-shaped or grid-shaped plate can be arranged in front of the transverse distributor arrangement in the direction of travel. The comb-shaped or grid-shaped plate can be arranged in front of the height-adjustable deflector plate in the direction of travel. The comb-shaped or grid-shaped plate can be arranged between the height-adjustable deflector plate and the longitudinal conveyor device.

[0032] The vertical position of the comb-shaped or grid-shaped plate can be adjustable. The deflector plate arrangement can be designed such that the vertical position of the comb-shaped or grid-shaped plate is adjustable, in particular relative to the longitudinal conveyor device.

[0033] The road paver can have a material hopper for receiving the paving material. The longitudinal conveyor device can be designed to transport the paving material from the material hopper in front of the paving screed. In particular, the paving material can be transported by the longitudinal conveyor device from the material hopper in front of the paving screed, opposite to the direction of travel. The longitudinal conveyor device can be designed to transport the paving material from the material hopper to the transverse distribution arrangement. The transverse distribution arrangement can be designed to distribute the paving material in front of the paving screed transversely to the direction of travel.

[0034] The road paver can have a control unit. The control unit can be configured to adjust the height of the height-adjustable deflector plate, in particular relative to the longitudinal conveyor device. The control unit can be configured to adjust the height of the height-adjustable deflector plate relative to the transverse distributor arrangement. The control unit can be configured to adjust the height of the comb-shaped or grid-shaped plate, in particular relative to the longitudinal conveyor device. The control unit can be configured to adjust the height of the comb-shaped or grid-shaped plate relative to the transverse distributor arrangement. The control unit can be designed to continuously adjust the height of the height-adjustable deflector plate. The control unit can be designed to continuously adjust the height of the comb-shaped or grid-shaped plate.

[0035] The control unit can be configured to adjust the vertical position of the height-adjustable deflector plate, in particular relative to the longitudinal conveyor device. The control unit can be configured to adjust the vertical position of the height-adjustable deflector plate relative to the transverse distributor arrangement. The control unit can be designed to continuously adjust the vertical position of the height-adjustable deflector plate. The control unit can be designed to continuously adjust the vertical position of the comb- or grid-shaped plate.

[0036] The control unit may be configured to adjust the vertical position of the comb-shaped or grid-shaped plate together with the vertical position of the height-adjustable deflector plate.

[0037] The comb-shaped or grid-shaped plate can be vertically adjustable together with the height-adjustable plate. The comb-shaped or grid-shaped plate can be vertically adjustable relative to the height-adjustable deflector plate.

[0038] The road paver may have a pre-scraper assembly. The pre-scraper assembly may be located behind the cross-distributor assembly in the direction of travel. The pre-scraper assembly may have a height-adjustable scraper plate.

[0039] According to a second aspect of the invention, a method for operating a road paver comprises conveying paving material in front of a paving screed opposite to a direction of travel of the road paver and distributing the paving material in front of the paving screed transversely to the direction of travel of the road paver by means of a transverse distribution arrangement. The road paver has a deflector plate. The deflector plate is arranged in front of the transverse distribution arrangement in the direction of travel. The deflector plate is vertically movable during operation of the road paver. The deflector plate can be movable together with the transverse distribution arrangement during operation of the road paver. The deflector plate can be vertically movable relative to the transverse distribution arrangement during operation of the road paver (in particular during a paving run).

[0040] The deflector plate can be moved vertically automatically by a control unit. The deflector plate can be moved vertically by an operator input. The vertical position of the deflector plate can be controlled automatically by a control unit. The vertical position of the deflector plate can be controlled by an operator input.

[0041] The vertical position of the deflector plate can be adjusted based on the paver's current operating mode. The height of the deflector plate can be adjusted based on the paver's current operating mode.

[0042] The road paver according to the first aspect of the invention can be used with method steps of the method according to the second aspect of the invention. The method according to the second aspect of the invention can be carried out with a road paver according to the first aspect of the invention.

[0043] As used in the description of the various embodiments described and the appended claims, the singular forms are to be construed as including the plural forms and vice versa, unless the context clearly indicates otherwise.

[0044] The terms "first," "second," "third," and "fourth" are merely designations for a specific element or component and do not necessarily indicate a particular order or arrangement of the components or elements mentioned. For example, the presence of a fourth element / component does not necessarily imply the presence of a first, second, or third element / component, and vice versa.

[0045] Advantageous embodiments of the invention are explained in more detail below with reference to the attached figures. Fig. 1shows a side view of a road paver according to the invention. Fig. 2 shows a perspective view of a road paver according to the invention. Fig. 3 shows a plan view of the longitudinal conveyor device, the transverse distributor arrangement and the paving screed of a road paver according to the invention. Fig. 4 shows a perspective view of the longitudinal conveyor device, the transverse distributor arrangement and the deflector plate arrangement of a road paver according to the invention. Fig. 5 shows a perspective view of the longitudinal conveyor device and the deflector plate arrangement of a road paver according to the invention. Fig. 6 shows a perspective view of the longitudinal conveyor device and the deflector plate arrangement of a road paver according to the invention. Fig. 7 shows a side sectional view of the longitudinal conveyor device and the deflector plate arrangement of a road paver according to the invention. Fig. 8shows a side sectional view of the longitudinal conveyor device and the deflector plate arrangement of a road paver according to the invention.

[0046] The Fig. 1 and 2show a side view and a perspective top view of a road paver 1 according to the invention for producing a paving layer 2 on a subsurface 3. The road paver 1 has a material hopper 4 at the front in the paving direction of travel 100, from which paving material 6 held therein is transported to a paving screed 7 of the road paver 1 by means of a longitudinal conveyor device 5, counter to the paving direction of travel 100 of the road paver 1. The longitudinal conveyor device 5 is arranged within a chassis 8 of the road paver 1 and transports the paving material 6 initially to a transverse distributor arrangement 9 arranged in front of the paving screed 7 in the paving direction of travel 100. The transverse distributor arrangement 9 is designed to distribute the paving material 6 in front of the paving screed 7 along a transverse direction 200 transverse to the paving direction of travel 100.

[0047] The extension of the paved layer 2 in the transverse direction 200 is referred to as the working width 210 or paving width 210. The paving screed 7 has a screed base body 10 and laterally extendable extension parts 11. By extending the extension parts 11 laterally, the working width 210 of the paving layer 2 can be varied and adjusted.

[0048] The road paver 1 further comprises a control unit 33. The control unit 33 can be operated by user input or automatically. The control unit 33 is designed to adjust the vertical position of a height-adjustable deflector plate 26. The control unit 33 is designed to move the height-adjustable deflector plate 26.

[0049] Fig. 3shows a schematic representation of a top view of the paving screed 7 and the longitudinal conveyor device 5 of the road paver 1 according to the invention. The longitudinal conveyor device 5 has a conveyor belt in the form of a scraper belt 12. The scraper belt 12 comprises a left scraper belt section 13 and a right scraper belt section 14. The designations left and right are to be understood as looking in the paving direction of travel 100.

[0050] The paving material 6 dropped by the scraper belt 12 in front of the screed base body 10 of the paving screed 7 is distributed by the transverse distributor arrangement 9 along a front side 14 of the screed base body 10, as shown by arrows 220.

[0051] A rear wall 15 of the chassis 8 of the road paver 1 forms together with the front side 14 of the screed base body 10 a transverse distribution channel 16 for the transverse distribution arrangement 9.

[0052] The extension parts 11 of the screed 7 can be extended laterally in the transverse direction 200 relative to the base screed 10, whereby the screed 7 can be widened and the working width 210 can be varied. The transverse distribution channel 16 can be further extended laterally in accordance with a widening of the screed 7.

[0053] From the scraper belt 12 of the longitudinal conveyor device 5, the paving material 6 is transferred to the transverse distribution arrangement 9, which is positioned in front of the paving screed 7. The transverse distribution arrangement 9 is designed to distribute the paving material 6 in front of the paving screed 7 in the transverse direction 200, transverse to the paving travel direction 100, within the transverse distribution channel 16.

[0054] The transverse distributor assembly 9 is attached to the rear end of the chassis 8 of the road paver 1. The transverse distributor assembly 9 comprises a left auger 17 and a right auger 18. The left auger 17 and the right auger 18 are mounted on a suspension 19 in the form of a screw suspension 19.

[0055] Located in the housing formed by the screw suspension 19 is a screw drive (not shown) for driving the two distribution screws 17, 18. The transverse distribution arrangement 9 comprises a shaft 20. This can be two individual shafts 20 (left shaft 21, right shaft 22) or a common shaft 20 for the two distribution screws 17, 18. The left distribution screw 17 is detachably coupled to the left shaft 21. The right distribution screw 18 is detachably coupled to the right shaft 22. The outer end of each shaft 21, 22, i.e. the end facing away from the screw suspension 19, is mounted in a screw bearing 23.

[0056] The deflector plate arrangement 24 according to the invention is in Fig. 3 not shown. The position of the deflector plate arrangement 24 is indicated by the reference numeral 24.

[0057] Fig. 4shows a perspective view of the longitudinal conveyor device 5, the transverse distributor assembly 9, and the deflector plate assembly 24 of a road paver according to the invention. The deflector plate assembly 24 is arranged between the longitudinal conveyor device 5 and the transverse distributor assembly 9.

[0058] In order to better illustrate the individual components of the longitudinal conveyor device 5 and the deflector plate arrangement 24, Fig. 4 only a part of the cross-distribution arrangement 9 is shown. In Fig. 4 The right auger 18, the right shaft 22, and the auger mount 19 of the cross distributor assembly 9 are shown. The auger mount 19 is mounted on the cross distributor bracket 25.

[0059] The deflector plate assembly 24 comprises a height-adjustable deflector plate 26. The height-adjustable deflector plate 26 is connected to the cross-distribution bracket 25 via a support structure 27. The cross-distribution bracket 25 can be moved vertically to adjust the vertical position of the cross-distribution assembly 9. Due to the connection via the support structure 27, the height-adjustable deflector plate 26 is moved vertically together with the cross-distribution assembly 9. In alternative embodiments, the height-adjustable deflector plate 26 can be moved vertically independently of the cross-distribution assembly 9. The upper side 28 of the height-adjustable deflector plate 26 is arranged at an angle to the vertical 300 so that the paving material is directed to the cross-distribution assembly 9.

[0060] The deflector plate assembly 24 further comprises a comb-like plate 29. The comb- or grid-shaped plate 29 is arranged between the longitudinal conveyor device 5 and the height-adjustable deflector plate 26. The comb-shaped plate is preferably made of spring steel in order to be able to deflect without being damaged upon contact with the conveyor chain of the longitudinal conveyor.

[0061] The deflector plate arrangement 24, in particular the height-adjustable deflector plate 26, reduces the entry of paving material 6 under the longitudinal conveyor device 5. The deflector plate arrangement 24, in particular the height-adjustable deflector plate 26, reduces the entry of paving material 6 from the transverse distributor arrangement 9 in the paving direction of travel 100. The deflector plate arrangement, in particular the height-adjustable deflector plate 26, can reduce the entrainment of paving material 6 by the scraper bars of the slack side 30 of the scraper belt 12 in the paving direction of travel 100. This can be further reduced by the comb- or grid-shaped plate 29. The undercarriage 31 of the road paver 1 is arranged to each side of the longitudinal conveyor device 5. The deflector plate arrangement 24, in particular the height-adjustable deflector plate 26, reduces the entry of paving material 6 into or under the undercarriage 31.

[0062] The Figs. 5 and 6 show perspective views of the Fig. 4 shown longitudinal conveyor device 5 and deflector plate arrangement 24. The transverse distributor arrangement 9 is shown in the Figs. 5 and 6 not shown.

[0063] The Figs. 5 and 6 The deflector plate arrangement 24 shown additionally comprises a second deflector plate 32. The second deflector plate 32 is in the Fig. 4 As shown in the illustration, it is obscured by other components of the road paver 1. The second deflector plate 32 is stationary and connected to the chassis 8 of the road paver 1 or the longitudinal conveyor device 5. The second deflector plate 32 is therefore not vertically adjustable. The second deflector plate 32 can also be omitted, since the height-adjustable deflector plate 24 largely or entirely takes over the function of the second deflector plate 32.

[0064] Fig. 5 shows the height-adjustable deflector plate 26 in a raised position. Fig. 6shows the height-adjustable deflector plate 26 in a lowered position. The comb- or grid-shaped plate 29 is connected to the height-adjustable deflector plate 26 and can be moved in height together with the height-adjustable deflector plate 26.

[0065] The Figs. 7 and 8 show side views of the Figs. 5 and 6 shown longitudinal conveyor device 5 and deflector plate arrangement 24. Fig. 7shows the height-adjustable deflector plate 26 and the comb- or grid-shaped plate 29 in a raised position. When the road paver 1 drives onto a transport truck via a loading ramp, a certain ground clearance or a ramp angle 40° below the deflector plate assembly 24 must be ensured. Otherwise, the deflector plate assembly 24 could come into contact with the ground 3 when driving onto the loading ramp, which could damage the deflector plate assembly 24. By moving the height-adjustable deflector plate 26 into the raised position, a sufficiently large ramp angle 40° is enabled.

[0066] Fig. 8shows the height-adjustable deflector plate 26 and the comb- or grid-shaped plate 29 in a lowered position. During the paving of the paving material 6, it can be advantageous to limit the vertical distance, also referred to as height in the present application, between the deflector plate arrangement 24 and the subsoil 3. By means of a small vertical distance 310 between the deflector plate arrangement 24 and the subsoil 3, the introduction of paving material 6 under the longitudinal conveyor device 5 and / or the undercarriage 31 can be reduced. In the lowered position, the height-adjustable deflector plate 26 is arranged at a first vertical distance 310 from the subsoil 3. The fixed, second deflector plate 32 is arranged at a second vertical distance 320 from the subsoil 3. Only road pavers 1 with the fixed deflector plate 32 are known from the prior art.Due to the height difference 330 between the first vertical distance 310 and the second vertical distance 320, which is realized by the height-adjustable deflector plate 26, the entry of paving material 6 under the longitudinal conveyor device 5 and the chassis 31 can be reduced.

Claims

1. Road finisher (1) for producing a paving layer (2) from a paving material (6), comprising a paving screed (7), a longitudinal conveyor device (5) which is designed to transport the paving material (6) against a direction of travel (100) of the road finisher (1) to the paving screed (7), a transverse distributor arrangement (9) which is designed to distribute the paving material (6) transversely to the direction of travel (100) in front of the paving screed (7), and a deflector plate arrangement (24) which is arranged in the direction of travel (100) in front of the transverse distributor arrangement (9), characterized in that the deflector plate arrangement (24) has a height-adjustable deflector plate (26).

2. Road paver according to claim 1, characterized in that the height-adjustable deflector plate (24) can be moved in height during operation of the road finisher (1), in particular during a paving run of the road finisher.

3. Road paver according to claim 1 or 2, characterized in thatthe height-adjustable deflector plate (26) is at least indirectly fastened to a suspension (19) of the transverse distributor arrangement (9).

4. Road paver according to one of the preceding claims, characterized in that the height-adjustable deflector plate (26) can be moved in height together with the transverse distributor arrangement (9).

5. Road paver according to one of the preceding claims, characterized in that the height-adjustable deflector plate (26) is movable in height relative to the transverse distributor arrangement (9).

6. Road paver according to one of the preceding claims characterized in that the deflector plate arrangement (24) is arranged substantially between the longitudinal conveyor device (5) and the transverse distributor arrangement (9).

7. Road paver according to one of the preceding claims, characterized in that the height-adjustable deflector plate (26) can be moved pneumatically, hydraulically, electrically and / or mechanically in height.

8. Road paver according to one of the preceding claims, characterized in that the deflector plate arrangement (24) has a second deflector plate (32), wherein the second deflector plate (32) is not adjustable in height, wherein the second deflector plate (32) is arranged in particular in the direction of travel (100) in front of the height-adjustable deflector plate (26).

9. Road paver according to one of the preceding claims, characterized in that the deflector plate arrangement (24) additionally comprises a comb-shaped or grid-shaped plate (29), wherein the comb-shaped or grid-shaped plate (29) is adjustable in height.

10. Road paver according to one of the preceding claims, characterized in that the road paver (1) has a material hopper (4) for receiving the paving material (6), wherein the longitudinal conveyor device (5) is designed to convey the paving material (6) from the material hopper (4) to the paving screed (7), in particular to the transverse distributor arrangement (9) in front of the paving screed (7).

11. Road paver according to one of the preceding claims, characterized in that the road paver (1) has a control unit (33), wherein the control unit (33) is configured to adjust the height of the height-adjustable deflector plate (26).

12. Road paver according to one of the preceding claims, characterized in that the road paver (1) has a pre-scraper arrangement, wherein the pre-scraper arrangement is arranged behind the transverse distributor arrangement (9) in the direction of travel (100).

13. A method for operating a road finisher (1), in particular a road finisher according to one of the preceding claims, wherein the method comprises the following: - conveying paving material (6) opposite to a direction of travel (100) of the road finisher (1) in front of a paving screed (7) of the road finisher (1), and - distributing the paving material (6) in front of the paving screed (7) transversely to the direction of travel (100) of the road finisher (1) by means of a transverse distribution arrangement (9), wherein the road finisher (1) has a deflector plate (26) which is arranged in front of the transverse distribution arrangement (9) in the direction of travel (100), characterized in that the deflector plate (26) is moved in height during operation of the road finisher (1), in particular during a paving run of the road finisher.

14. A method for operating a road finisher according to claim 13, characterized in thatthe deflector plate (26) is automatically moved in height by a control unit (33) and / or by an operator input.

15. A method for operating a road finisher according to claim 13 or 14, characterized in that the vertical position of the deflector plate (26) is adjusted based on the current operating mode of the road paver (1).

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