Road construction vehicle

Abstract

The utility model relates to a road construction vehicle (1, 51) which comprises a chassis (5) and a material hopper (9) used for receiving paving materials. The material hopper (9) has two opposing hopper portions (17) configured to define a receiving space (19) for paving material. The at least one hopper portion (17) has a base portion (21) and a side portion (23). The base (21) is attached to the chassis (5) and is pivotable about a main pivot axis (25) between an open position and a closed position. The side portion (23) is attached to the base portion (21) along a pivot end edge of the side portion (23), the side portion (23) being pivotable about a side portion pivot axis (27). A free end edge (35) of the side portion (23) opposite the pivot end edge is configured to lie below the side portion pivot axis (27) when the base portion (21) is in the closed position.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction vehicles with a material hopper. In particular, the utility model relates to road construction vehicles in the form of road pavers or feed trucks for road pavers. Background Art

[0002] In practice, it is known that the material hopper of a road paver has two halves that are opposite each other in the width direction perpendicular to the paving direction. During the paving operation, the hopper halves are in the paving configuration. Starting from the paving configuration, the hopper halves can each pivot towards each other about an axis extending in the paving direction, so that the material hopper enters the transport configuration. In the transport configuration, the width of the material hopper is reduced. When the material hopper is in the transport configuration, the road paver can be more easily transported between construction sites or can be parked more space-efficiently. The pivotable hopper halves can each have a side wall that can pivot relative to the rest of the hopper half. In the paving configuration, the side wall can be tilted outwards to one side to increase the width of the material hopper, thus facilitating the docking of a truck to dump paving material into the material hopper.

[0003] In practice, it is also known that a feed truck for a road paver acts as an intermediate device between a truck driving in front of the feed truck and a road paver driving behind the feed truck. The truck can dump paving material into the material hopper of the feed truck. The conveyor belt of the feed truck can drop the paving material from above into the material hopper of the road paver. Summary of the Utility Model

[0004] According to one aspect of the utility model, a road construction vehicle is provided. The road construction vehicle includes a chassis and a material hopper for receiving paving material. The material hopper has two hopper parts opposite each other. The hopper parts are configured to define a receiving space for the paving material. At least one of the hopper parts has a base and a side part. The base is attached to the chassis so as to be pivotable between an open position and a closed position about a main pivot axis. The side part is attached to the base along the pivot end edge of the side part so as to be pivotable about a side part pivot axis. The side part includes a free end edge that is opposite to the pivot end edge. When the base is in the closed position, the free end edge of the side part is configured to be located below the side part pivot axis.

[0005] The transverse direction can be perpendicular to the driving direction of the road construction vehicle, especially perpendicular to the paving direction of the road construction vehicle. The transverse direction can be a horizontal direction. The transverse direction can be the left-right direction relative to the driving direction of the road construction vehicle. The transverse direction can extend from one side of the road construction vehicle to the other side of the road construction vehicle.

[0006] The two hopper parts can be formed similarly to each other. The two hopper parts can be designed as mirror images of each other. The two hopper parts can be opposite to each other in the transverse direction.

[0007] A conveying device can be arranged in the transverse direction between the two hopper parts. The conveying device can be configured to convey the paving material out of the material hopper. The conveying device can be configured to convey the paving material at least substantially parallel to the driving direction of the road construction vehicle (in particular against the driving direction of the road construction vehicle). The conveying device can include a scraper belt. The conveying device can form at least a part of the bottom of the receiving space.

[0008] In the open position, the base can form at least a part of the bottom of the receiving space. The base can include an inner surface. In the open position, the inner surface of the base can form at least a part of the bottom of the receiving space. In the open position, the inner surface of the base can form at least a part of the inner wall of the receiving space. The inner surface of the base can be planar. In the open position, the inner surface of the base can be at least substantially horizontal. In the open position, the inner surface of the base can be inclined relative to the horizontal plane by at most 5 degrees, or at most 10 degrees, or at most 15 degrees, or at most 20 degrees, or at most 25 degrees, or at most 30 degrees.

[0009] The main pivot axis can be stationary relative to the chassis of the road paver. The main pivot axis can extend along the driving direction of the road construction vehicle. The main pivot axis can extend at least substantially parallel to the driving direction of the road construction vehicle. At least in projection, when viewed from above, the main pivot axis can extend parallel to the driving direction of the road construction vehicle.

[0010] The base can be configured to pivot from the open position to the closed position by pivoting around the main axis towards the opposite hopper part. Pivoting the base from the open position to the closed position can include pivoting around the main pivot axis by at least 30 degrees, or at least 40 degrees, or at least 50 degrees, or at least 60 degrees, or at least 70 degrees, or at least 80 degrees. In the closed position, the inner surface of the base can be inclined relative to the horizontal plane, for example, inclined by at least 30 degrees, or at least 40 degrees, or at least 50 degrees, or at least 60 degrees, or at least 70 degrees, or at least 80 degrees. In the closed position, the inner surface of the bottom can face the opposite half of the bunker.

[0011] When the base pivots from the open position to the closed position, the base of the other hopper part can simultaneously pivot from the open position to the closed position.

[0012] During the working operation of the road construction vehicle, the base can be in the open position. In the open position, at least one hopper part can be configured to receive paving material. If the bases of both hopper parts are in the open position, the material hopper as a whole can be configured to receive paving material. If the base of at least one hopper part is in the open position, especially if the bases of both hopper parts are in the open position, the material hopper can be in the working configuration.

[0013] When the base is in the closed position, at least one hopper part can be upright. When the base is in the closed position, at least one hopper part can be folded inwards towards the other hopper part about the transverse direction. When the base is in the closed position, the width of the material hopper can be reduced. When the base of at least one hopper part is in the closed position, especially when the bases of both hopper parts are in the closed position, the material hopper can be in the transport configuration. In the transport configuration, due to the reduced width of the hopper box, the transportation of the road construction vehicle between working operations can be simplified.

[0014] When the base is in the closed position, the height of the material hopper can be greater than the height when the base is in the open position. If the free end edge of the side part is below the side pivot axis in the closed position of the base, the height of the material hopper in the closed position can still be at least less than the height when the free end edge of the side part is above the side pivot axis. Since the free end edge of the side part is below the side pivot axis in the closed position of the base, the material hopper can have a relatively low height even when the base is in the closed position. The relatively low height of the material hopper in the closed position can provide a better view for the operator or driver of the road construction vehicle, especially a better forward view. For example, even when the base is in the closed position, the operator or driver of the road construction vehicle can look forward at the material hopper, making it easier to safely guide the road construction vehicle.

[0015] Preferably, when the base is in the closed position, at least one hopper part or the material hopper does not extend upwards beyond the chassis of the road paver.

[0016] When the base pivots about the main pivot axis, at least one hopper part can pivot as a whole about the main pivot axis relative to the chassis of the road paver.

[0017] The side pivot axis can extend along the driving direction of the road construction vehicle. The side pivot axis can be at least substantially parallel to the driving direction of the road construction vehicle. At least in the plan view, the side pivot axis can be parallel to the driving direction of the road construction vehicle. The side pivot axis can be at least substantially parallel to the main pivot axis.

[0018] The base can extend between a main pivot axis and a side pivot axis. The side can be connected to the base along the side pivot axis.

[0019] The side can be configured to pivot relative to the base about the side pivot axis between a deployed position and a transport position. When the base is in an open position and the side is in the deployed position, the side can form at least a part of the sidewall of the receiving space and / or laterally define the receiving space. The side can pivot about the side pivot axis from the deployed position to the transport position in a direction of rotation that is the same as the direction in which the base pivots from the open position to the closed position.

[0020] When pivoting the side from the deployed position to the transport position, the side can be folded inside the material hopper.

[0021] The pivot end edge of the side can be at least substantially parallel to one or more of the following: the main pivot axis, the side pivot axis, the paving direction of the road construction vehicle, the free end edge of the side.

[0022] The free end edge of the side can be at least substantially parallel to one or more of the following: the main pivot axis, the side pivot axis, the paving direction of the road construction vehicle, the pivot end edge of the side.

[0023] At least in a plan view, the pivot end edge and / or the free end edge of the side can extend parallel to the driving direction of the road construction vehicle.

[0024] When the base is in the closed position and the side is in the transport position, the free end edge of the side can be located below the side pivot axis. If the free end edge of the side is located below the side pivot axis when the base is in the closed position, the material hopper can have a relatively low height in the closed position. The relatively low height of the material hopper in the closed position can provide a better view for the operator or driver of the road construction vehicle, especially a better forward view. Preferably, when the base is in the closed position and the side is in the transport position, at least one hopper part or the material hopper does not extend upward beyond the chassis of the road paver.

[0025] The side can have an intermediate part and an end part. For example, a plurality of intermediate parts can also be provided such that the side has a plurality of intermediate parts and one end part.

[0026] The intermediate part can have a first surface. The end part can have a second surface. Both the first surface and the second surface can be configured to form a part of the inner wall of the receiving space.

[0027] The first surface and the second surface can meet along a boundary line that is at least substantially parallel to one or more of the following: the main pivot axis, the side pivot axis, the pivot end edge of the side, the free end edge of the side, the driving direction of the road construction vehicle.

[0028] The first surface and the second surface may be configured to be inclined towards each other.

[0029] The intermediate part and the end part may be rigidly connected to each other or integrally formed. The first surface and the second surface may form an angle with each other. The first surface and the second surface may define a bend in the side part. The bend in the side part enables the side part to be accommodated particularly compactly in the closed position.

[0030] The intermediate part may be attached to a base, which may pivot about a side part pivot axis.

[0031] The end part may be attached to an intermediate part, which may pivot about an end part pivot axis. The end part pivot axis may be at least substantially parallel to one or more of the following: the main pivot axis, the side part pivot axis, the pivoting end edge of the side part, the free end edge of the side part, the driving direction of the road construction vehicle.

[0032] The end part may be configured to pivot about the end part pivot axis between a folded position and a deployed position. The end part may be configured to pivot about the end part pivot axis between a folded position and a deployed position at least when the base is in the open position. In the folded position, when the base is in the open position, the end part may form at least part of the side wall of the receiving space. In the folded position, when the base is in the open position, the end part may be at least substantially vertically aligned. In the deployed position, the end part may form at least a substantially planar continuation of the base. In the deployed position, when the base is in the open position, the end part may form at least part of the bottom surface of the receiving space. When the base is in the open position, the width of the material hopper with the end part in the deployed position may be greater than the width of the end part in the folded position. Pivoting the end part about the end part pivot axis from the deployed position to the folded position can be carried out in the same direction of rotation as pivoting the base about the main pivot axis from the open position to the closed position and / or pivoting the side part about the side part pivot axis from the deployed position to the transport position.

[0033] The road construction vehicle may include a coupling device. The coupling device may be configured to couple the pivoting position of the base about the main pivot axis and the pivoting position of the side part about the side part pivot axis. The coupling device may be configured to couple the pivoting position of the base about the main pivot axis with the pivoting position of the side part about the side part pivot axis such that each pivoting position of the base about the main pivot axis is assigned a corresponding pivoting position of the side part about the side part pivot axis. The coupling device may simplify the operation of the material hopper. The coupling device may ensure that the base and the side part are always in the correct position relative to each other.

[0034] The coupling device can be configured to achieve automatic pivoting of the side part about the side pivoting axis when the base pivots about the main pivoting axis. The coupling device can be configured to achieve automatic pivoting of the side part about the side pivoting axis in the same rotation direction when the base pivots about the main pivoting axis.

[0035] The coupling device can be configured to pivot the side part from the deployed position to the transport position when the main body part pivots from the open position to the closed position. The coupling device can be configured to pivot the side part from the transport position to the deployed position when the base pivots from the closed position to the open position.

[0036] The coupling device can be configured to automatically pivot the side part through a second angle about the side pivoting axis when the base is pivoted through a first angle about the main pivoting axis, wherein the value of the first angle is different from the value of the second angle.

[0037] The coupling device can be formed by means of control technology. When receiving a user input with an adjustment command, the control device of the road construction vehicle can be configured to control the actuator for pivoting the base about the main pivoting axis and the actuator for pivoting the side part about the side pivoting axis.

[0038] The coupling device is a mechanical coupling device. Especially in the case of the mechanical design of the coupling device, only one actuator can be provided, which is configured to pivot the base about the main pivoting axis and pivot the side part about the side pivoting axis (especially simultaneously).

[0039] The coupling device can include a coupling rod. The coupling rod can connect the side part to the chassis. The coupling rod can be pivotally attached to the side part and the chassis. The side part can have an extension connected to the coupling rod. When the base is in the open position, the coupling rod can be in a horizontal position. When the base is in the closed position, the coupling rod can be in an upright position.

[0040] The material hopper can be attached to the front part of the road construction vehicle with respect to the paving direction.

[0041] The road construction vehicle can be formed as a road paver or a feed vehicle for a road paver.

[0042] The road paver can include a tractor. The chassis can be the chassis of the tractor. The material hopper can be arranged on the tractor and / or attached to the tractor. The road paver can include a screed. The screed can be attached to the tractor so as to be towed behind the tractor. The road construction vehicle can include a conveying device. The conveying device can be configured to convey the paving material from the material hopper in the opposite direction of the paving direction to the rear and submit it to the screed.

[0043] The feeder vehicle may include a conveyor belt. The conveyor belt can be designed to transport paving material from the material hopper of the feeder vehicle and drop it from above into the material hopper of a road paver traveling behind the feeder vehicle. Description of the Drawings

[0044] The present utility model will be further described below in conjunction with the drawings.

[0045] Figure 1 Schematically shows the conversion sequence of the material hopper of a road paver from a transport configuration to a working configuration according to an embodiment, where part A shows the transport configuration and part E shows the working configuration.

[0046] Figure 2 Shows a schematic view of the material hopper according to an embodiment as viewed from the chassis along the paving direction.

[0047] Figure 3 Shows a schematic view of a road paver according to an embodiment, where the material hopper is in the working configuration and the end is in the deployed position.

[0048] Figure 4 Shows a schematic view of a road paver according to an embodiment, where the material hopper is in an intermediate configuration and the end is in the deployed position.

[0049] Figure 5 Shows a schematic view of a feeder vehicle with a material hopper according to an embodiment. Detailed Description of the Invention

[0050] Figure 1 Parts A to E therein show the time sequence during the movement of a road construction vehicle implemented as a road paver 1 from the transport configuration shown in part A to the working configuration shown in part E. The road paver 1 includes a tractor 3 with a chassis 5. A material hopper 9 for receiving paving material is arranged in front of the chassis 5 along the paving direction 7. The road paver 1 includes a conveying device 11 which conveys the paving material from the material hopper 9 against the paving direction 7 during the paving operation and places it in front of a screed 13 towed by the tractor 3. The screed 13 compacts and levels the paving material.

[0051] In the shown embodiment, the road paver 1 is a compact road paver 1 which can be used in a particularly space-saving manner. The compact road paver 1 of the shown embodiment includes an operator platform 15 arranged on the screed 13 through which an operator can control the road paver 1. The operator platform 15 may have facilities for the operator to stand. The platform can be formed on or behind the screed 13. The operator can look forward from the platform along the paving direction 7 over the chassis 5.

[0052] To move the road paver 1 from the transport configuration to the working configuration (or from the working configuration to the transport configuration), the configuration of the material hopper 9 can be changed. In Figure 1 the working configuration shown in part E of Figure 1 , the material hopper 9 is ready for the paving operation and can receive paving material. In the working configuration, the material hopper 9 has an excess width, i.e., the material hopper 9 projects at least laterally beyond the chassis 5 of the road paver 1. In

[0053] Figure 1 the order of parts A to E of

[0054] shows how the road paver 1 moves from the transport configuration to the working configuration. It can be understood that the road paver 1 can be moved from the working configuration to the transport configuration by the reverse order, i.e., from part E to part A.

[0055] Each hopper part 17 includes a base 21 and a side 23. Each base 21 is pivotally attached to the chassis 5 along a main pivot axis 25. The side 23 is pivotally attached to the base 21 along a side pivot axis 27. In particular, the side 23 is attached to the base 21 along a pivot end edge of the side 23 that can pivot about the side pivot axis 27. The main pivot axis 25, the side pivot axis 27, and the pivot end edge of the side 23 extend in the paving direction 7. In particular, the main pivot axis 25, the side pivot axis 27, and the pivot end edge of the side 23 can extend at least substantially parallel to each other and parallel to the paving direction 7.

[0056] An actuator 29 is provided for each hopper half 17, by means of which the pivot position of the respective base 21 about the main pivot axis 25 can be adjusted. To move the road paver 1 from the transport configuration ( Figure 1 part A ofFigure 1 part E), the actuator 29 is controlled to pivot the base 21 outwardly away from each other about the main pivot axis 25 so as to move it into the open position. To move the road paver 1 from the working configuration ( Figure 1 part E) to the transport configuration ( Figure 1 part A), the actuator 29 is controlled so as to pivot the base 21 towards each other about the pivot axis 25 so as to move it into the closed position.

[0057] Each hopper half 17 is provided with a coupling device 31 in the form of a connecting rod 33. The connecting rod 33 is articulated both on the chassis 5 of the road paver 1 and on the side 23 of the respective hopper half 17. As Figure 2 shown, the connecting rod 33 is articulated on an extension 34 of the side 23, in particular on an extension of the middle part 37 of the side 23.

[0058] The connecting rod 33 is essentially a rigid element. Due to the connecting rod 33, a specific pivoting position of the side 23 about the side pivot axis 27 is assigned to each pivoting position of the base 21 about the main pivot axis 25. Thus, the coupling device 31 ensures that when the pivoting position of the base 21 about the main pivot axis 25 changes, the pivoting position of the side 23 about the side pivot axis 27 changes automatically and simultaneously.

[0059] During the paving operation of the road paver 1, the length of the connecting rod 33 can remain unchanged. Nevertheless, the length of the connecting rod 33 is adjustable, in particular so as to accurately approach the end positions despite manufacturing inaccuracies.

[0060] From Figure 1 it can be seen that changing the pivoting position of the base 21 about the main pivot axis 25 causes the specified side 23 to pivot about the side pivot axis 27 in the same direction of rotation.

[0061] In the transport configuration of the material hopper 9 ( Figure 1 part A), the side 23 is in the transport position relative to the base 21. In the working configuration of the material hopper 9 ( Figure 1 part E), the side 23 is in the deployed position relative to the base 21. When the road paver 1 moves from the transport configuration ( Figure 1 part A) to the working configuration ( Figure 1 part E), the side 23 pivots outwardly about the side pivot axis 27, away from the intermediate space between the hopper box halves 17. When the road paver 1 moves from the working configuration ( Figure 1 part E) to the transport configuration ( Figure 1 part A), the side 23 pivots into the intermediate space between the hopper halves 17 about the side pivot axis 27.

[0062] At least in the transport configuration ( Figure 1 of part A), the free end edge 35 of the side part 23 - which is opposite to the pivot end edge of the side part 23 - is located below the side pivot axis 27. Thus, the material hopper 9 is particularly compact in the transport configuration. In particular, the material hopper 9 in the transport configuration only slightly obstructs the forward view of the operator. The free end edge 35 of the side part 23 extends in the paving direction 7 and, in particular, is parallel to the paving direction 7, the main pivot axis 25, the side pivot axis 27, and the pivot end edge of the side part 23.

[0063] The side part 23 includes an intermediate part 37 and an end part 39. The intermediate part 37 connects the base part 21 to the end part 39. The end part 39 defines the free end edge 35. The intermediate part 37 is connected to the base part 21 and is pivotable about the side pivot axis 27. The intermediate part 37 includes a first surface 41 and the end part 39 includes a second surface 43 (see Figure 1 part D). The first surface 41 and the second surface 43 each form a part of the inner wall of the receiving space 19 of the material hopper 9. In the working configuration ( Figure 1 of part E), the intermediate part 37 forms a part of the bottom of the material hopper 9. In the working configuration, the end part 39 forms at least a part of the side wall of the receiving space 19 of the material hopper 9.

[0064] The intermediate part 37 and the end part 39 can be rigidly connected together such that there is a fixed angle, for example an angle of 90 degrees, or an angle between 90 degrees and 180 degrees, or an angle between 60 degrees and 120 degrees, between the first surface 41 and the second surface 43. Alternatively, the intermediate part 37 and the end part 39 can be connected to each other and pivotable about an end pivot axis 42. The end pivot axis 42 extends in the paving direction 7 and, in particular, is parallel to the main pivot axis 25, the side pivot axis 27, and the paving direction 7. The end pivot axis 42 can extend parallel to the pivot end edge of the side part 23 as well as the free end edge 35 of the side part 23.

[0065] The pivot position of the end part 39 relative to the intermediate part 37 can be adjusted independently of the pivot position of the base 21 about the main pivot axis 25 and the pivot position of the side part 23 about the side pivot axis 27. The pivot position of the end part 39 relative to the intermediate part 37 about the end pivot axis 42 can be adjusted manually or automatically. Predetermined locking positions can be provided for the pivot position of the end part 39 relative to the intermediate part 37.

[0066] In Figure 1 all parts, the end part 39 is in a folded position with respect to the intermediate part 37. In the folded position, as in the illustrated embodiment, there is an angle of approximately 90 degrees between the first surface 41 and the second surface 43.

[0067] Figure 3 shows a road paver 1 in a working configuration (corresponding to Figure 1 part E of Figure 1 ), in which, contrary to part E of Figure 1 , the end 39 has been pivoted about an end pivot axis 42 relative to the middle part 37 to an unfolded position. In the unfolded position, there is an angle of at least approximately 180 degrees between a first surface 41 and a second surface 43. The angle between the first surface 41 and the second surface 43 can also be less than 180 degrees. By pivoting the end 39 to the unfolded position, the width of the material hopper 9 can be increased, for example in order to simplify the docking of a truck supplying the material hopper 9 or to make it possible in the first place.

[0068] Figure 4 shows the road paver 1 in an intermediate configuration between the transport configuration and the working configuration, in which here the end 39 is also in the unfolded position relative to the middle part 37.

[0069] Figure 5 shows a schematic view of a road construction vehicle formed as a feeder vehicle 51. The feeder vehicle 51 includes a chassis 5 on which an operator platform 15 is provided. In front of the driving direction 7, there is a material hopper 9, which can correspond to the material hopper 9 described with reference to Figures 1 to 4 . Behind the driving direction 7, the feeder vehicle 51 has a conveyor belt 53. The conveying device 55 of the feeder vehicle 51 is configured to convey paving material from the material hopper 9 against the driving direction 7 to the conveyor belt 53. The conveyor belt 53 is configured to drop the paving material from above into the material hopper of a road paver traveling behind the feeder vehicle 51.

Claims

1. A road construction vehicle, comprising: a chassis (5); and a material hopper (9) for receiving paving material; wherein the material hopper (9) has two opposite hopper parts (17), and the hopper parts (17) are configured to define a receiving space (19) for the paving material; wherein at least one hopper part (17) has a base (21) and a side part (23); wherein the base (21) is attached to the chassis (5) and is pivotable about a main pivot axis (25) between an open position and a closed position; and wherein the side part (23) is attached to the base (21) along a pivot end edge of the side part (23), and the side part (23) is pivotable about a side part pivot axis (27); characterized in that a free end edge (35) of the side part (23) opposite to the pivot end edge is configured to be located below the side part pivot axis (27) when the base (21) is in the closed position.

2. The road construction vehicle according to claim 1, wherein, The side part (23) has an intermediate part (37) and an end part (39).

3. The road construction vehicle according to claim 2, wherein, The intermediate part (37) has a first surface (41), and the end part (39) has a second surface (43), wherein the first surface (41) and the second surface (43) are each configured to form a part of the inner wall of the receiving space (19), and wherein the first surface (41) and the second surface (43) are configured to be inclined towards each other.

4. The road construction vehicle according to claim 2, wherein, The intermediate part (37) is attached to the base (21) and is pivotable about the side part pivot axis (27).

5. The road construction vehicle according to claim 3, wherein, The intermediate part (37) is attached to the base (21) and is pivotable about the side part pivot axis (27).

6. The road construction vehicle according to any one of claims 2 to 5, wherein, The end part (39) is attached to the intermediate part (37) and is pivotable about an end part pivot axis (42).

7. The road construction vehicle according to any one of claims 2 to 5, wherein, The intermediate part (37) and the end part (39) are rigidly connected to each other or integrally formed with each other.

8. The road construction vehicle according to any one of claims 1 to 5, wherein, The road construction vehicle further includes a coupling device (31), and the coupling device (31) is configured to couple a pivot position of the base (21) about the main pivot axis (25) and a pivot position of the side part (23) about the side part pivot axis (27).

9. The road construction vehicle according to claim 8, wherein, The coupling device (31) is configured to achieve automatic pivoting of the side part (23) about the side part pivot axis (27) when the base (21) pivots about the main pivot axis (25).

10. The road construction vehicle according to claim 9, wherein, The coupling device (31) is configured to achieve automatic pivoting of the side part (23) about the side part pivot axis (27) when the base (21) pivots about the main pivot axis (25) in the same rotation direction.

11. The road construction vehicle according to claim 8, wherein, The coupling device (31) is configured to cause the side part (23) to automatically pivot about the side part pivot axis (27) by a second angle when the base (21) pivots about the main pivot axis (25) by a first angle, wherein the value of the first angle is different from the value of the second angle.

12. The road construction vehicle according to claim 9, wherein, The coupling device (31) is configured to automatically pivot the side part (23) by a second angle about the side part pivot axis (27) when the base part (21) pivots by a first angle about the main pivot axis (25), wherein the value of the first angle is different from the value of the second angle.

13. The road construction vehicle according to claim 10, wherein, The coupling device (31) is configured to automatically pivot the side part (23) by a second angle about the side part pivot axis (27) when the base part (21) pivots by a first angle about the main pivot axis (25), wherein the value of the first angle is different from the value of the second angle.

14. The road construction vehicle according to claim 8, wherein, The coupling device (31) is provided by means of control technology or mechanically.

15. The road construction vehicle according to any one of claims 9 to 13, wherein, The coupling device (31) is provided by means of control technology or mechanically.

16. The road construction vehicle according to claim 8, wherein, The coupling device (31) includes a coupling rod (33) that connects the side part (23) to the chassis (5).

17. The road construction vehicle according to any one of claims 9 to 14, wherein, The coupling device (31) includes a coupling rod (33) that connects the side part (23) to the chassis (5).

Images