Road paver with height-adjustable deflection 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 screed (7); a longitudinal conveying device (5) for conveying the paving material (6) to the screed (7) in a direction opposite to the travel direction (100) of the road paver (1); a transverse distribution device (9) for distributing the paving material (6) in front of the screed (7) transversely to the direction of travel (100); and a deflection plate device (24), which is arranged in front of the transverse distribution device (9) in the direction of travel (100). The deflection plate device (24) has a height-adjustable deflection plate (26). The invention also relates to a method of operating a road paver (1).

Description

Technical Field

[0001] The present invention relates to a road paver and a method of operating a road paver. Background Art

[0002] A road paver is designed to generate a paving layer from paving material (eg, asphalt), and generally includes a chassis and a working mechanism disposed on the chassis, such as a hopper, a screed, a longitudinal conveying device, and a transverse distributing device.

[0003] A fixed deflector plate is usually provided below the rear end of the longitudinal conveyor. During the paving process, when material is transferred from the longitudinal conveyor to the transverse distribution device, material may accumulate in the direction of travel of the road paver. These accumulations of material accumulate in front of the transverse distribution device and may cause the paving material to segregate and contaminate the drive gear. This can only be prevented to a limited extent by the fixed deflector plates known in the prior art. Since there must be sufficient ground clearance or a sufficiently large drive-on angle under the deflector plate to be able to drive onto the transport truck, the deflector plate cannot be set as low vertically as required. If the deflector plate is not set high enough, it may affect the ability to drive onto the transport truck or it may be damaged when driving onto the loading ramp of the transport truck. Summary of the Invention

[0004] The object of the present invention is to reduce the segregation of paving material in front of the transverse distribution device and to reduce the contamination of the drive gear by paving material. This object is achieved by a road paver or a method of operating a road paver according to the present invention.

[0005] According to a first aspect of the present invention, a road paver for producing a paving layer of paving material includes a screed, a longitudinal conveying device, a transverse distribution device, and a deflector device. The longitudinal conveying device is configured to convey paving material to the screed in a direction opposite to the direction of travel of the road paver. The transverse distribution device is configured to distribute the paving material transversely to the direction of travel in front of the screed. The deflector device is positioned in front of the transverse distribution device in the direction of travel and has deflectors with adjustable heights.

[0006] The height-adjustable deflector plate may be adapted to be adjusted in its vertical position. The height-adjustable deflector plate may be adapted to be adjusted in its vertical position relative to the longitudinal conveying device. The height-adjustable deflector plate may be adapted to be adjusted in its vertical position relative to the transverse distributing device.

[0007] The height-adjustable deflector plate may be adapted to be movable in height. The height-adjustable deflector plate may be adapted to be movable in height relative to the longitudinal conveying device. The height-adjustable deflector plate may be adapted to be movable in height relative to the transverse distributing device.

[0008] Adjustable height deflectors allow the vertical distance between the deflector assembly and the base to be varied or adjusted. A smaller vertical distance between the deflector assembly and the base can reduce the amount of paving material that enters beneath the longitudinal conveyor and / or into the drive gear of the road paver. This can prevent segregation of the paving material.

[0009] In the present application, the term "adjustable height" is to be understood in particular as meaning that the vertical position is adjustable.

[0010] The height of the height-adjustable deflector plate may be adapted to be steplessly adjusted. The height-adjustable deflector plate may be adapted to be steplessly changed in height. The height-adjustable deflector plate may be adapted to be steplessly adjusted in a vertical position. The height-adjustable deflector plate may be adapted to be steplessly moved in a vertical position.

[0011] The screed plate can have a base screed plate. The screed plate can have transversely extendable extensions, which are particularly arranged on the sides of the base screed plate. The extensions can be arranged on the left and right sides of the base screed plate when viewed in the direction of travel.

[0012] The height-adjustable deflector plate can be moved in height by at least 40 mm, preferably at least 100 mm, preferably at least 150 mm, preferably at least 200 mm. The height-adjustable deflector plate can be moved in height by at least 40 mm, preferably at least 100 mm, preferably at least 150 mm, preferably at least 200 mm relative to the transverse distribution device. The height-adjustable deflector plate can be moved in height by at least 40 mm, preferably at least 100 mm, preferably at least 150 mm, preferably at least 200 mm relative to the longitudinal conveying device. The height-adjustable deflector plate can be moved in height by at least 40 mm, preferably at least 100 mm, preferably at least 150 mm, preferably at least 200 mm relative to the base.

[0013] The width of the deflector assembly can be between 42 cm and 172 cm, preferably between 42 cm and 62 cm. The width of the deflector assembly can be between 60 cm and 80 cm. The width of the deflector assembly can be between 70 cm and 90 cm. The width of the deflector assembly can be between 115 cm and 135 cm. The width of the deflector assembly can be between 130 cm and 150 cm. The width of the deflector assembly can be between 152 cm and 172 cm. The width of the deflector assembly can correspond to the width of the screed. The width of the deflector assembly can correspond to the width of the base screed. The width of the deflector assembly can correspond to the combined width of the base screed and the extension. The width of the deflector assembly can correspond to the width of the transverse distributor channel or flow channel of the road paver. Width is specifically defined as the extension transverse to the direction of travel.

[0014] The width of the height-adjustable deflector plate may be between 42 cm and 315 cm, preferably between 42 cm and 62 cm. The width of the height-adjustable deflector plate may be between 70 cm and 90 cm. The width of the height-adjustable deflector plate may be between 115 cm and 135 cm. The width of the height-adjustable deflector plate may be between 130 cm and 150 cm. The width of the height-adjustable deflector plate may be between 152 cm and 172 cm. The width of the height-adjustable deflector plate may be between 110 cm and 130 cm. The width of the height-adjustable deflector plate may be between 170 cm and 190 cm. The width of the height-adjustable deflector plate may be between 230 cm and 260 cm. The width of the height-adjustable deflector plate may be between 290 cm and 315 cm. The deflector plate arrangement may include multiple height-adjustable deflectors. The total width of the height-adjustable deflectors may be as described above. The deflector plates can be arranged adjacent to one another transversely to the direction of travel of the road paver, in particular arranged adjacent to one another. The deflector plates can be arranged 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 plates can correspond to the width of the screed plate. The width of the height-adjustable deflector plates can correspond to the width of the base screed plate. The width of the height-adjustable deflector plates can correspond to the combined width of the base screed plate and the extension. The width of the height-adjustable deflector plates can correspond to the width of a transverse distributor channel or flow channel of the road paver.

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

[0016] The road paver may include a driving gear. The driving gear may be disposed on the side of the longitudinal conveyor. The driving gear may include a left driving gear and a right driving gear. "Left" and "right" refer to the direction of travel of the road paver. The left driving gear may be disposed laterally to the left of the longitudinal conveyor. The right driving gear may be disposed laterally to the right of the longitudinal conveyor. The driving gears (particularly the left driving gear and the right driving gear) may be equipped with tracks. The driving gears (particularly the left driving gear and the right driving gear) may include wheels.

[0017] The deflector arrangement may extend transversely to the direction of travel, in particular to the left and right, beyond the longitudinal conveying device. The deflector arrangement may extend transversely to the direction of travel into the drive gear. The deflector arrangement may be arranged behind the drive gear in the direction of travel. The deflector arrangement may extend transversely to the direction of travel from the left end of the drive gear to the right end. The deflector arrangement may extend transversely to the direction of travel from the outside of the left drive gear to the outside of the right drive gear.

[0018] The height-adjustable deflector plate can extend transversely to the direction of travel, in particular to the left and right, beyond the longitudinal conveyor. The height-adjustable deflector plate can extend transversely to the direction of travel into the drive gear. The height-adjustable deflector plate can be arranged behind the drive gear in the direction of travel. The height-adjustable deflector plate can extend transversely to the direction of travel from the left end of the drive gear to the right end. The height-adjustable deflector plate can extend transversely to the direction of travel from the outside of the left drive gear to the outside of the right drive gear.

[0019] During operation of the road paver (in particular during paving operations), the height-adjustable deflector plate can be moved in height, in particular relative to the longitudinal conveyor. The vertical position of the height-adjustable deflector plate can be adjusted during operation of the road paver, in particular relative to the longitudinal conveyor. In particular, the deflector plate arrangement can be adjusted such that the height-adjustable deflector plate can be lowered and raised during operation of the road paver, in particular relative to the longitudinal conveyor.

[0020] The height-adjustable deflector plate can be attached at least indirectly to the suspension of the transverse distribution device. The height-adjustable deflector plate can be attached to the suspension of the transverse distribution device via an intermediate component (e.g., a support structure). The height-adjustable deflector plate can be attached directly to the suspension of the transverse distribution device. The suspension of the transverse distribution device and the height-adjustable deflector plate can be attached to the same component. The suspension of the transverse distribution device can be attached to the 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 in height together with the transverse distribution device, in particular relative to the longitudinal conveying device. The transverse distribution device can be moved in height, in particular relative to the longitudinal conveying device. The height-adjustable deflector plate can be at least indirectly attached to the transverse distribution device, so that the height-adjustable deflector plate can be moved together with the transverse distribution device, in particular relative to the longitudinal conveying device. The suspension of the transverse distribution device can be moved in height, in particular relative to the longitudinal conveying device. The transverse distribution bracket can be moved in height, in particular relative to the longitudinal conveying device. The vertical position of the height-adjustable deflector plate and the vertical position of the transverse distribution device can be adjusted together, in particular relative to the longitudinal conveying device.

[0022] The transverse distribution bracket or the suspension of the transverse distribution device can be attached to the chassis of the road paver via a pneumatic cylinder. The vertical position of the transverse distribution bracket, the suspension of the transverse distribution device, the height-adjustable deflector plate, and / or the transverse distribution device can be adjusted via the pneumatic cylinder. The pneumatic cylinder can be pneumatic, hydraulic, or electric.

[0023] The height-adjustable deflector plate can be moved relative to the transverse distribution device. An adjustment assembly disposed between the height-adjustable deflector plate and the suspension of the transverse distribution device can be used to move the height-adjustable deflector plate relative to the transverse distribution device. The adjustment device can include at least one pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. The adjustment device can include an electric motor.

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

[0025] The deflector device can be arranged essentially, in particular in the direction of travel, between the longitudinal conveying device and the transverse distribution device. The adjustable deflector can be arranged essentially, in particular in the direction of travel, between the longitudinal conveying device and the transverse distribution device. The term "essentially" is to be understood in particular in such a way that the areas of the individual components can also overlap. The center of gravity of the deflector device, in particular in the direction of travel, can be arranged between the center of gravity of the longitudinal conveying device and the center of gravity of the transverse distribution device. The center of gravity of the height-adjustable deflector can be arranged, in particular in the direction of travel, between the center of gravity of the longitudinal conveying device and the center of gravity of the transverse distribution assembly.

[0026] The paving material can be conveyed from the longitudinal conveyor to the transverse distribution device in a direction opposite to the direction of travel of the road paver. On its way to the transverse distribution device, the paving material can be directed through a deflector device. Specifically, the paving material falls from the longitudinal conveyor onto the deflector device, which directs the paving material to the transverse distribution device.

[0027] The height-adjustable deflector plate can be moved pneumatically. The height-adjustable deflector plate can be moved hydraulically. The height-adjustable deflector plate can be moved electrically. The height-adjustable deflector plate can be moved mechanically. The scraper assembly can include one or more pneumatic cylinders. The scraper assembly can include one or more hydraulic cylinders. The scraper assembly can include one or more electric motors. The scraper assembly can include 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 may include a second deflector plate. The second deflector plate may be arranged and / or adjusted such that it is immovable in height, in particular relative to the longitudinal conveying device. The second deflector plate may be arranged and / or adjusted such that its vertical position is not adjustable, in particular relative to the longitudinal conveying device. The deflector plate arrangement may be adjusted such that the second deflector plate is not adjustable in height. The deflector plate arrangement may be adjusted 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 and the height-adjustable deflector plate. The second deflector plate can be arranged below the rear end of the longitudinal conveyor.

[0030] The second deflector plate may also be adapted to be height-adjustable. The deflector plate arrangement may be adjusted in such a way that the height of the second deflector plate is adjustable, in particular relative to the longitudinal conveying device. The deflector plate arrangement may be adjusted in such a way that the vertical position of the second deflector plate is adjustable, in particular relative to the longitudinal conveying device.

[0031] The deflector plate device can include a comb-like or grid-like plate. The comb-like or grid-like plate can be height-adjustable, particularly relative to the longitudinal conveyor. The comb-like or grid-like plate can be positioned in front of the transverse distribution device in the direction of travel. The comb-like or grid-like plate can be positioned in front of the height-adjustable deflector plate in the direction of travel. The comb-like or grid-like plate can be positioned between the height-adjustable deflector plate and the longitudinal conveyor.

[0032] The vertical position of the comb-like or grid-like plates is adjustable. The deflector plate arrangement can be adjusted in such a way that the vertical position of the comb-like or grid-like plates, in particular relative to the longitudinal transport device, is adjustable.

[0033] A road paver may include a hopper for receiving paving material. A longitudinal conveyor may be used to convey the paving material from the hopper to the front of the screed. In particular, the longitudinal conveyor may convey the paving material from the hopper to the front of the screed in a direction opposite to the direction of travel. The longitudinal conveyor may be used to convey the paving material from the hopper to a transverse distribution device. The transverse distribution device may be used to distribute the paving material in front of the screed transverse to the direction of travel.

[0034] The road paver may include a control unit. The control unit may be configured to adjust the height of the height-adjustable deflector plate, in particular relative to the longitudinal conveyor. The control unit may be configured to adjust the height of the height-adjustable deflector plate relative to the transverse distribution device. The control unit may be configured to adjust the height of the comb-shaped or grid-shaped plate, in particular relative to the longitudinal conveyor. The control unit may be configured to adjust the height of the comb-shaped or grid-shaped plate relative to the transverse distribution device. The control unit may be configured to continuously adjust the height of the height-adjustable deflector plate. The control unit may be configured 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 conveying device. The control unit can be configured to adjust the vertical position of the height-adjustable deflector plate relative to the transverse distribution device. The control unit can be configured to continuously adjust the vertical position of the height-adjustable deflector plate. The control unit can be configured to continuously adjust the vertical position of the comb-shaped or grid-shaped plate.

[0036] The control unit may be configured to adjust the vertical position of the comb-like or grid-like plates and the vertical position of the height-adjustable deflection plates.

[0037] The comb-like or grid-like plates can be moved in height together with the height-adjustable deflection plates. The comb-like or grid-like plates can be moved in height relative to the height-adjustable deflection plates.

[0038] The road paver may include a pre-scraper device, which may be arranged behind the transverse distribution device in the travel direction and may include a height-adjustable scraper.

[0039] According to a second aspect of the present invention, a method for operating a road paver includes conveying paving material in front of a screed plate in a direction opposite to the direction of travel of the road paver, and distributing the paving material in front of the screed plate transversely to the direction of travel of the road paver using a transverse distribution device. The road paver includes a deflector plate. The deflector plate is positioned in front of the transverse distribution device in the direction of travel. During operation of the road paver, the deflector plate is movable in height. During operation of the road paver, the deflector plate can move together with the transverse distribution device. During operation of the road paver (particularly during paving operations), the deflector plate can move in height relative to the transverse distribution device.

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

[0041] The vertical position of the deflector plate can be adjusted according to the current operating mode of the road paver. The height of the deflector plate can be adjusted according to the current operating mode of the road paver.

[0042] The road paver according to the first aspect of the present invention may be used together with the method steps of the method according to the second aspect of the present invention.The method according to the second aspect of the present invention may be performed by the road paver according to the first aspect of the present invention.

[0043] As used in the description of the various embodiments and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" should be understood as including the plural forms and vice versa.

[0044] The terms "first," "second," "third," and "fourth" should be understood only as identifying specific elements or components and do not necessarily indicate a specific order or assembly of the components or elements. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Advantageous embodiments of the invention will be explained in more detail below with reference to the accompanying drawings.

[0046] Figure 1 A side view of a road paver according to the invention is shown.

[0047] Figure 2 A perspective view of a road paver according to the invention is shown.

[0048] Figure 3 A top view of the longitudinal conveying device, the transverse distribution device and the screed of the road paver according to the invention is shown.

[0049] Figure 4 A perspective view of the longitudinal conveying device, the transverse distribution device and the deflection plate device of the road paver according to the present invention is shown.

[0050] Figure 5 A perspective view showing a longitudinal conveying device and a deflecting plate device of a road paver according to the present invention is shown.

[0051] Figure 6 A perspective view showing a longitudinal conveying device and a deflecting plate device of a road paver according to the present invention is shown.

[0052] Figure 7 A side sectional view showing a longitudinal conveying device and a deflecting plate device of a road paver according to the present invention is shown.

[0053] Figure 8 A side sectional view showing a longitudinal conveying device and a deflecting plate device of a road paver according to the present invention is shown. DETAILED DESCRIPTION

[0054] Figure 1 and Figure 2 A side view and a perspective top view of a road paver 1 according to the present invention for producing a paving layer 2 on a substrate 3 are shown. The road paver 1 has a hopper 4 at the front, in the paving direction 100. The paving material 6 contained in the hopper 4 is conveyed by a longitudinal conveying device 5 in a direction opposite to the paving direction 100 of the road paver 1 from the hopper 4 to the screed 7 of the road paver 1. The longitudinal conveying device 5 is arranged in the chassis 8 of the road paver 1 and initially conveys the paving material 6 to a transverse distribution device 9 arranged in front of the screed 7 in the paving direction 100. The transverse distribution device 9 serves to distribute the paving material 6 in front of the screed 7 in a transverse direction 200, which is transverse to the paving direction 100.

[0055] The extension of the paving layer 2 in the transverse direction 200 is referred to as the working width 210 or paving width 210. The screed 7 has a screed base 10 and a laterally extendable extension 11. The working width 210 of the paving layer 2 can be changed and adjusted by extending the extension 11 laterally.

[0056] 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 used to adjust the vertical position of the height-adjustable deflector plate 26. The control unit 33 is used to move the height-adjustable deflector plate 26 in height.

[0057] Figure 3A schematic top view of the screed 7 and longitudinal conveyor 5 of a road paver 1 according to the present invention is shown. The longitudinal conveyor 5 has a conveyor belt in the form of a scraper belt 12. The scraper belt 12 comprises a left scraper belt section and a right scraper belt section. The designations "left" and "right" are to be understood as referring to the paving direction 100.

[0058] The paving material 6 that has fallen in front of the screed base 10 of the screed plate 7 by means of the scraper belt 12 is distributed by the transverse distribution device 9 along the front side 14 of the screed base 10 , as indicated by arrows 220 .

[0059] The rear wall 15 of the chassis 8 of the road paver 1 forms together with the front side 14 of the screed base 10 a transverse distribution channel 16 for the transverse distribution device 9 .

[0060] The extension 11 of the screed 7 can be extended laterally relative to the base screed 10 in a transverse direction 200, thereby widening the screed 7 and changing the working width 210. The transverse distribution channel 16 can be further extended laterally according to the widening of the screed 7.

[0061] The paving material 6 is transferred from the scraper belt 12 of the longitudinal conveyor 5 to a transverse distribution device 9 positioned in front of the screed 7. The transverse distribution device 9 serves to distribute the paving material 6 in front of the screed 7 in a transverse distribution channel 16 in a transverse direction 200 transverse to the paving travel direction 100.

[0062] The transverse distribution device 9 is attached to the rear end of the chassis 8 of the road paver 1. The transverse distribution device 9 comprises a left distribution screw 17 and a right distribution screw 18. The left distribution screw 17 and the right distribution screw 18 are supported on a suspension in the form of a screw suspension 19.

[0063] The housing formed by the screw suspension 19 contains a screw drive (not shown) for powering the two dispensing screws 17, 18. The transverse dispensing device 9 includes a shaft 20, which can be two separate shafts (left shaft 21, right shaft 22) or a single shaft 20 shared by the two dispensing screws 17, 18. The left dispensing screw 17 is removably coupled to the left shaft 21. The right dispensing screw 18 is removably 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 supported in a screw bearing 23.

[0064] The deflector plate device 24 according to the present invention is not Figure 3 The position of the deflector plate arrangement 24 is indicated by reference numeral 24 .

[0065] Figure 4The figure shows a perspective view of the longitudinal conveying device 5, the transverse distribution device 9 and the deflector device 24 of the road paver according to the present invention. The deflector device 24 is arranged between the longitudinal conveying device 5 and the transverse distribution device 9.

[0066] In order to better illustrate the various components of the longitudinal conveying device 5 and the deflection plate device 24, Figure 4 Only a part of the transverse distribution device 9 is shown. Figure 4 The right distribution screw 18, the right shaft 22 and the screw suspension 19 of the transverse distribution device 9 are shown. The screw suspension 19 is mounted on the transverse distribution bracket 25.

[0067] The deflector plate arrangement 24 comprises a deflector plate 26 of adjustable height. The deflector plate 26 of adjustable height is connected to the transverse distribution bracket 25 via a support structure 27. The transverse distribution bracket 25 is movable in height to adjust the vertical position of the transverse distribution device 9. Due to the connection via the support structure 27, the deflector plate 26 of adjustable height is movable in height together with the transverse distribution device 9. In an alternative embodiment, the deflector plate 26 of adjustable height can be movable in height independently of the transverse distribution device 9. The upper side 28 of the deflector plate 26 of adjustable height is angled with respect to the vertical direction 300 so as to guide the paving material to the transverse distribution device 9.

[0068] The deflector plate arrangement 24 further comprises comb-like plates 29. The comb-like or grid-like plates 29 are arranged between the longitudinal conveyor device 5 and the height-adjustable deflector plates 26. The comb-like plates are preferably made of spring steel so as to avoid contact with the conveyor chain of the longitudinal conveyor and thus not be damaged.

[0069] The deflector arrangement 24, in particular the height-adjustable deflector plates 26, reduces the amount of paving material 6 that enters beneath the longitudinal conveyor 5. The deflector arrangement 24, in particular the height-adjustable deflector plates 26, reduces the amount of paving material 6 that is conveyed away from the transverse distribution device 9 in the paving direction 100. The deflector arrangement, in particular the height-adjustable deflector plates 26, reduces the amount of paving material 6 that is entrained by the scraper bars of the return strand (empty strand) 30 of the scraper belt 12 in the paving direction 100. This entrainment can be further reduced by comb- or grid-like plates 29. The drive gear 31 of the road paver 1 is disposed on both sides of the longitudinal conveyor 5. The deflector arrangement 24, in particular the height-adjustable deflector plates 26, reduces the amount of paving material 6 that enters or is entrained beneath the drive gear 31.

[0070] Figure 5 and Figure 6 Shown Figure 4 The longitudinal conveying device 5 and the deflection plate device 24 are shown in a three-dimensional view. For clarity, Figure 5 and Figure 6The transverse distribution device 9 is not shown.

[0071] Figure 5 and Figure 6 The deflector plate arrangement 24 shown also includes a second deflector plate 32. Figure 4 In the illustration shown, the second deflector plate 32 is covered by other components of the road paver 1. The second deflector plate 32 is fixed and connected to the chassis 8 or the longitudinal conveyor 5 of the road paver 1. Therefore, the second deflector plate 32 is not vertically movable. The second deflector plate 32 can also be omitted, as the height-adjustable deflector plate 24 largely or completely takes over the function of the second deflector plate 32.

[0072] Figure 5 The adjustable height deflector plate 26 is shown in a raised position. Figure 6 The height-adjustable deflector plate 26 is shown in a lowered position. A comb-like or grid-like 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.

[0073] Figure 7 and Figure 8 Shown Figure 5 and Figure 6 A side view of the longitudinal conveying device 5 and the deflection plate device 24 is shown in FIG. Figure 7 The height-adjustable deflector plates 26 and the comb- or grid-like plates 29 are shown in a raised position. When the road paver 1 is driven onto a transport truck via a loading ramp, a certain base clearance or drive-up angle 400 must be ensured below the deflector plate assembly 24. Otherwise, the deflector plate assembly 24 could come into contact with the base 3 when driving onto the loading ramp, potentially damaging the deflector plate assembly 24. By moving the height-adjustable deflector plates 26 into a raised position, a sufficiently large drive-up angle 400 can be achieved.

[0074] Figure 8The deflector plates 26 with adjustable height and the comb-shaped or grid-like plates 29 are shown in a lowered position. During the laying of the paving material 6, it may be advantageous to limit the vertical distance (also referred to in this application as height) between the deflector plate arrangement 24 and the base 3. A smaller vertical distance 310 between the deflector plate arrangement 24 and the base 3 can reduce the amount of paving material 6 that enters under the longitudinal conveyor 5 and / or the drive gear 31. In the lowered position, the deflector plates 26 with adjustable height are arranged at a first vertical distance 310 from the base 3. The second, fixed deflector plates 32 are arranged at a second vertical distance 320 from the base 3. In the prior art, only road pavers 1 with fixed deflector plates 32 are known. Due to the height difference 330 between the first vertical distance 310 and the second vertical distance 320 achieved by the deflector plates 26 with adjustable height, the amount of paving material 6 that enters under the longitudinal conveyor 5 and the drive gear 31 can be reduced.

Claims

1. A road paver (1) for producing a paving layer (2) from a paving material (6), the road paver (1) comprising: Screed (7), a longitudinal conveying device (5) for conveying the paving material (6) to the screed plate (7) in a direction opposite to the travel direction (100) of the road paver (1), a transverse distribution device (9) for distributing the paving material (6) in front of the screed (7) transversely to the travel direction (100), and a deflector device (24) arranged in front of the transverse distribution device (9) in the direction of travel (100), It is characterized in that The deflector plate device (24) has a deflector plate (26) with adjustable height.

2. The road paver according to claim 1, characterized in that: During operation of the road paver (1), the height-adjustable deflector plate (26) is movable in height.

3. The road paver according to claim 2, characterized in that: During the paving operation of the road paver (1), the height-adjustable deflector plate (26) can be moved in height.

4. The road paver according to claim 1, characterized in that: The height-adjustable deflector plate (26) is at least indirectly attached to the suspension (19) of the transverse distribution device (9).

5. The road paver according to claim 2, characterized in that: The height-adjustable deflector plate (26) is at least indirectly attached to the suspension (19) of the transverse distribution device (9).

6. The road paver according to any one of claims 1 to 5, characterized in that: The height-adjustable deflector plate (26) can be moved in height together with the transverse distribution device (9).

7. The road paver according to any one of claims 1 to 5, characterized in that: The height-adjustable deflector plate (26) is movable in height relative to the transverse distribution device (9).

8. The road paver according to any one of claims 1 to 5, characterized in that: The deflector device (24) is substantially arranged between the longitudinal conveying device (5) and the transverse distribution device (9).

9. The road paver according to any one of claims 1 to 5, characterized in that: The height-adjustable deflector plate (26) can be moved in height by pneumatic, hydraulic, electric and / or mechanical means.

10. The road paver according to any one of claims 1 to 5, 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 the direction of travel (100).

11. The road paver according to claim 10, characterized in that: The second deflector (32) is arranged in front of the height-adjustable deflector (26) in the direction of travel (100).

12. The road paver according to any one of claims 1 to 5, characterized in that: The deflector plate arrangement (24) further comprises comb-shaped or grid-shaped plates (29), wherein the comb-shaped or grid-shaped plates (29) are adjustable in height.

13. The road paver according to any one of claims 1 to 5, characterized in that: The road paver (1) has a hopper (4) for receiving the paving material (6), wherein the longitudinal conveying device (5) is used to convey the paving material (6) from the hopper (4) to the screed (7).

14. The road paver according to claim 13, characterized in that: The longitudinal conveying device (5) is used to convey the paving material (6) from the hopper (4) to a transverse distribution device (9) in front of the screed (7).

15. The road paver according to any one of claims 1 to 5, 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).

16. The road paver according to any one of claims 1 to 5, characterized in that: The road paver (1) has a pre-scraper device, wherein the pre-scraper device is arranged behind the transverse distribution device (9) in the travel direction (100).

17. A method of operating a road paver (1), wherein the method comprises the following steps: - conveying paving material (6) in a direction opposite to the direction of travel (100) of the road paver (1) in front of the screed (7) of the road paver (1), and - distributing the paving material (6) in front of the screed (7) transversely to the direction of travel (100) of the road paver (1) by means of a transverse distribution device (9), The road paver (1) has a deflector plate (26) which is arranged in front of the transverse distribution device (9) in the direction of travel (100). It is characterized in that During operation of the road paver (1), the deflector plate (26) is movable in height.

18. The method of operating a road paver according to claim 17, wherein: During the paving operation of the road paver, the deflector plate (26) is movable in height.

19. The method of operating a road paver according to claim 17, wherein: The deflector plate (26) can be moved in height automatically by a control unit (33) and / or by input from an operator.

20. A method of operating a road paver according to any one of claims 17 to 20, characterised in that: The vertical position of the deflector plate (26) is adjusted based on the current operating mode of the road paver (1).

21. A method of operating a road paver (1) according to any one of claims 1 to 16, wherein the method comprises the following steps: - conveying paving material (6) in a direction opposite to the direction of travel (100) of the road paver (1) in front of the screed (7) of the road paver (1), and - distributing the paving material (6) in front of the screed (7) transversely to the direction of travel (100) of the road paver (1) by means of a transverse distribution device (9), The road paver (1) has a deflector plate (26) which is arranged in front of the transverse distribution device (9) in the direction of travel (100). It is characterized in that During operation of the road paver (1), the deflector plate (26) is movable in height.

22. The method of operating a road paver according to claim 21, wherein: During the paving operation of the road paver, the deflector plate (26) is movable in height.

23. The method of operating a road paver according to claim 21, wherein: The deflector plate (26) can be moved in height automatically by a control unit (33) and / or by input from an operator.

24. A method of operating a road paver according to any one of claims 21 to 23, characterised 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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