Road construction system for paving process

Abstract

The utility model belongs to the technical field of road construction. The fundamental problem of the utility model is to provide a paving process with improved paving quality and improved paving performance. Road construction system for a paving process, comprising: a control system (2) having a determination unit and an adjustment unit; at least one road paver (3) functionally connected to the control system (2); at least one material supply chain (L) for supplying paving material (M) to the road paver (3); and at least one logistics system (4) functionally connected to the control system (2), having a detection unit and a communication unit. According to the utility model, the pre-compaction performance of at least one pre-compaction element of the paving screed plate of the road paver can be adjusted according to the paving speed so as to adapt to the determined material conveying rate. This allows the paving process to proceed continuously, i.e., without interrupting the paving process, and continuous pre-compaction to proceed.

Description

Technical Field

[0001] The utility model relates to a road construction system used in a paving process. Background Art

[0002] EP 2 514 871 A1 discloses a road construction system comprising: a material supply chain; a road paver supplied with paving material by the material supply chain for pre-compacting a newly produced paving layer; and a compactor vehicle following the road paver for final compaction of the newly produced paving layer. In addition, the road construction system has an electronic material density module configured to detect the pre-compaction achieved by the road paver and communicate it to the compactor vehicle, which adjusts its final compaction performance according to the received data describing the pre-compaction in order to produce the desired final compaction of the newly produced paving layer.

[0003] DE 10 2019 116 853 A1 discloses a system and a method for controlling the speed of a road paver. For this purpose, a feed rate of paving material delivered from an asphalt mixing plant to a construction site is determined, wherein the paving speed of at least one road paver used on the construction site is adjusted according to the determined feed rate. Alternatively, the speed of the road paver, in particular its maximum paving speed, can be changed based on the detected maximum compaction performance of a compactor following the road paver.

[0004] EP 2 325 392 A2 discloses a road paver with a compacting unit, the stroke of which can be automatically adjusted according to the paving speed, so that a substantially constant precompaction can be produced even if the speed of the road paver changes. The automatic adjustment of the stroke is achieved by a speed-dependent characteristic curve control. Similar characteristic curve controls are disclosed in EP 3 138 961 A1, EP 2 366 831 A1 and EP 2 366 832 A1. Utility Model Content

[0005] The problem underlying the invention is to provide a paving process with improved paving quality and improved paving performance.

[0006] The utility model relates to a road construction system used in a paving process, comprising:

[0007] A control system having:

[0008] - a determination unit for determining a material delivery rate (P L ), a paving speed (v) of the road paver (3) adapted thereto,

[0009] - a regulating unit for adjusting the material delivery rate (PL ) to adjust the pre-compacting performance (V) of at least one pre-compacting element (6) of the paving screed (7, 7') of the road paver (3) according to the paving speed (v) L ) in order to keep the precompaction (V) achieved by means of the precompacting element (6) constant;

[0010] at least one road paver (3) functionally connected to the control system (2);

[0011] at least one material supply chain (L) for supplying paving material (M) to said road paver (3); and

[0012] At least one logistics system (4), which is functionally connected to the control system (2), and which has:

[0013] - a detection unit for detecting a variable material delivery rate (P L ),

[0014] - a communication unit for communicating the detected variable material delivery rate (P L ) communicates with the control system (2).

[0015] According to the invention, the precompacting performance of at least one precompacting element of a paving screed of a road paver can be adjusted as a function of the paving speed to adapt to the determined material delivery rate. This enables the paving process to be carried out continuously, i.e. without interruption, and with continuous precompacting. Thus, the precompacting produced by the paving screed is kept constant by adjusting the precompacting performance to compensate for speed changes caused by the material delivery rate. Thus, the material delivery rate has a direct influence on the precompacting achieved.

[0016] Preferably, the control system is configured to determine the maximum possible paving performance of the road paver taking into account the material delivery rate indicated to it by the logistics system, so as to thereby calculate the maximum paving speed of the road paver as a function of the layer thickness and the layer width produced by means of the paving screed and to store the maximum paving speed calculated using the control system as a paving speed setpoint in a vehicle control device of the road paver functionally connected to the control system, if the maximum paving speed calculated using the control system is less than or equal to the maximum paving speed entered as a limiting condition by the user on the control system. Alternatively, the control system is configured to store the maximum paving speed entered as a limiting condition by the user as a paving speed setpoint in a vehicle control device of the road paver functionally connected to the control system, if the maximum paving speed calculated using the control system is greater than the maximum paving speed entered by the user. Both of the above alternatives allow for uninterrupted maximum paving performance in combination with constant precompaction, that is, they ensure maximum acceleration and a paving result of the best quality.

[0017] Usefully, the control system is adapted to calculate a correspondingly adjusted (new) maximum paving speed of the road paver by determining the changed material delivery rate and to determine the time at which the (new) maximum paving speed is stored in the vehicle control device of the road paver. This allows speed adjustment on the road paver at the construction site to be delayed until or when the material delivery rate at the construction site changes significantly, i.e. the road paver only reacts to a changed material delivery rate when this would lead to an undesired change in the material supply at the construction site. Thus, this variant allows only brief, negligible changes in the material supply to be ignored so that the road paver is driven at a constant paving speed as far as possible.

[0018] In particular, the control system can be configured to vary the time at which the new maximum paving speed is stored in the vehicle control device of the road paver as a function of the desired change in the paving speed. In particular, the control system can follow a logic such that in the case of a small change in the paving speed relative to the changed material delivery rate, the new maximum paving speed is stored in the vehicle control device of the road paver later than in the case of a large change in the paving speed relative to the changed material delivery rate. This principle can lead to the fact that only short-term, small changes in the material delivery rate can be ignored, that is, they cannot be transferred unnecessarily to the operation of the road paver. This is conducive to energy-saving operation of the road paver.

[0019] A preferred embodiment of the invention provides that the control system is configured to adjust the paving speed setpoint value according to a preselected minimum material reserve of paving material directly available in the vicinity of the road paver (i.e. at the construction site) and / or according to a preselected maximum material reserve, so that the paving material available during the paving process is not less than the minimum material reserve and / or not more than the maximum material reserve. This means that the road paver will only speed up the paving process to such an extent that there will be no shortage or surplus of material on the construction site. If there is an insufficient supply of material, the road paver runs the risk of having to interrupt the paving process. An oversupply of paving material would result in cooling of the paving material.

[0020] Preferably, the target layer thickness and the target precompaction can be stored in the control system as process parameters for an initial paving speed of the road paver defined before the start of the paving process. In this context, the initial paving speed at the start of the paving process is stored in the vehicle control of the road paver as an initial paving speed setpoint, and the control system is configured to calculate, in response to a speed change detected on the road paver or determined by means of the control system, a speed change, in particular a speed change from the initial paving speed setpoint to a maximum paving speed input as a paving speed setpoint for the paving process or to a maximum paving speed calculated from the material delivery rate, a correction factor for adjusting the precompaction performance according to the natural variation of the precompaction, which correction factor can be predicted from the variation of the speed, and store it in the screed control of the road paver. In the process, the screed control adjusts the precompaction performance of the compacting elements by means of the correction factor, such that the precompaction achieved with the speed variation substantially corresponds to the target precompaction defined for the initial paving speed. Thus, even if the speed of the road paver changes, which is detected or determined using the correction factor, the process parameters stored at the start of the paving process for a predetermined initial paving speed remain constant. In particular, this enables the road paver to accelerate the paving process as much as possible without interrupting the paving process, which is carried out with constant precompaction. This results in a particularly economical paving process and a uniform paving quality.

[0021] Preferably, the screed control device is configured to use the correction factor to change the stroke of the compacting element, to change the executable contact pressure of the compacting element and / or to change the speed of the compacting element. It is conceivable to use the correction factor determined individually by the control system to change the corresponding process parameters. In particular, the process parameters can be changed in combination to achieve a constant pre-compacting result.

[0022] A preferred embodiment of the invention provides that the road paver is configured to carry out a real-time measurement of the layer thickness produced, whereby a layer thickness correction factor (which results from the layer thickness deviation from a target layer thickness detected by the real-time measurement) can be determined and can be provided to the screed control device for the height control of the paving screed, and / or that the road paver is configured to carry out a real-time measurement of the precompaction produced, wherein, depending on the precompaction deviation from the target precompaction determined thereby, a post-compaction system which compensates for the precompaction deviation by means of a dynamic post-compaction modulation can be controlled such that the overall residual compaction deviation is minimized. The use of these correction functions is an absolute exception, since a substantially constant precompaction is accompanied by a constant layer thickness and the deviations from the target precompaction are often very small. If these compensation functions are triggered, the associated effort required to compensate for the deviations is very low.

[0023] The control system can be connected as a cloud-based application or a server-based network to the logistics system and the road paver. One variant provides that the control system is integrated in a portable device used by an operator at the construction site. It is conceivable that the logistics system is integrated as a cloud-based or network-based application in another portable device that is carried by at least one truck driver of the material supply chain.

[0024] According to a preferred variant, at least one part of the control system is available as a cloud-based application, which is configured to receive dynamic paver and screed process data of the road paver, for example from a control center connected thereto and / or determined during the paving process, and based thereon calculate at least one target process value, in particular a paving speed adapted to a varying material delivery rate and / or at least one correction factor, in particular for adjusting the precompaction performance, and transmit it to another part of the control system, which stores the calculated target value and correction value of the vehicle control device and / or the screed control device. This allows certain IT resources, in particular storage space, computing power and / or software, to be used as a web-based application.

[0025] Preferably, the part of the control system configured as a cloud-based application is also configured to detect dynamic material transport process data determined during the material transport process performed with the aid of the material supply chain, and based on this calculate (in particular calculate in real time) the material transport rate of the material supply chain and transmit it to another part of the control system, the control system determines the paving speed to be adapted to it based on the calculated material transport rate and provides it to the vehicle control device of the road paver.

[0026] According to one embodiment of the invention, the control system is not only partially available but also entirely available as a cloud-based application and is configured to calculate all target process values ​​and correction values ​​for the paving process at least as a function of the variable material delivery rate and to provide these values ​​directly to the vehicle control device and / or the screed control device of the road paver in order to achieve constant precompaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is explained in more detail with reference to the following drawings, wherein:

[0028] Figure 1 shows a schematic diagram of a road construction system for performing a paving process,

[0029] Figure 2 A paving screed of a road paver according to a first embodiment is shown in a sectional view.

[0030] Figure 3 A further paving screed for a road paver according to a second embodiment is shown in a sectional view.

[0031] Figure 4 The principle of the present invention based on changing the material delivery rate to produce a constant pre-compacting speed and pre-compacting performance is shown.

[0032] Figure 5 A schematic diagram showing different material reserves on a construction site.

[0033] Figure 6 A schematic diagram showing the change in paving speed of a road paver during the paving process, and

[0034] Figure 7 A schematic diagram showing the pre-compaction performance of a road paver adapting to different paving speeds during the paving process.

[0035] In all figures, technical components are identified with the same reference numerals. DETAILED DESCRIPTION

[0036] Figure 1 A schematic diagram of a road construction system 1 configured as a site management system to control a paving process E is shown. The road construction system 1 comprises: a control system 2; a road paver 3, which is functionally connected to the control system 2; a logistics system 4, which is functionally connected to the control system 2; and a material supply chain L, which supplies paving material M to the road paver 3, with a material delivery rate P L It can be detected by means of the logistics system 4 and made available to the control system 2 .

[0037] The control system 2 is configured to determine a paving speed v of the road paver 3 that is suitable for the determined material delivery rate PL . Figure 1 The control system 2 uses the material delivery rate P provided to it by the logistics system 4. L A schematic diagram is provided so that the paving speed v of the road paver 3 is calculated based on this and stored in the vehicle control device 5 arranged on the road paver 3.

[0038] also, Figure 1 Schematic diagram showing the pre-compaction performance V L The paving speed v can be adjusted—by means of at least one pre-compacting element 6 attached to a paving screed 7 of the road paver 3—depending on the determined paving speed v.

[0039] In addition, the control system 2 is configured to determine the material delivery rate P in addition to L In addition to the adjusted paving speed v, the time t during which the paving speed v is stored in the vehicle control device 5 of the road paver 3 is also determined. x Time t x The corresponding data can also be stored in the screed control device 8 of the paving screed 7 in order to simultaneously adjust the speed v of the road paver 3 and the precompacting performance V of the compacting element 6. L .

[0040] exist Figure 1 During the schematically illustrated paving process E, an asphalt layer D is produced at a construction site. The road construction system 1 comprises a mixing plant W, which is part of a material supply chain L and delivers paving material M to trucks 9. The paving material M is produced by the mixing plant W with a certain composition and temperature and transported to the construction site by trucks 9. One or more trucks 9 pour the paving material M directly into a hopper 10 of a road paver 3 or into a hopper of a feeder 11 of a road paver 3 travelling in front of the road paver 3 in a paving direction R. A compactor vehicle 12 configured for post-compacting travels behind the road paver 3 in the paving direction R. In the Figure 1 In FIG. 2 , the compactor vehicle 12 is also functionally connected to the control system 2 .

[0041] Figure 1 Indicates the maximum paving speed v of the paving process E of the paving machine 3 input by the user in the control system 2 B As a restriction. In addition, Figure 1 The schematic diagram shows a control system 2 which takes into account the determined material delivery rate P L , determine the possible paving performance P of the road paver 3 E , and taking into account the layer thickness S and the layer width T, a paving speed v is calculated therefrom, in particular an individual maximum paving speed v of the road paver 3 max .

[0042] In particular, if the maximum paving speed v calculated by the control system 2 is max Less than or equal to the maximum paving speed v entered by the user B , the control system 2 can store the maximum paving speed v calculated by means of the control system 2 max As a paving speed setpoint v in the vehicle control device 5 of the road paver 3 functionally connected thereto soll Alternatively, if the maximum paving speed v calculated by the control system 2 is max Greater than the maximum paving speed v entered by the user B , the maximum paving speed v entered by the user B The paving speed setpoint v is stored in the vehicle control device 5 .

[0043] The control system 2 can be configured in whole or in part as a cloud-based application C and / or a server-based network in order to control the individual vehicles and work units functionally integrated in the road construction system 1 in a coordinated manner in order to achieve an uninterrupted, maximally accelerated paving process E and thus constant pre-compaction of the paving layer D.

[0044] Figure 2 A sectional view of a paving screed 7 of a road paver 3 according to a first embodiment is shown. The paving screed 7 is an extended screed with a base screed section 14 and a laterally movable extended screed 15, which enables the layer width T to be varied. Alternatively, the paving screed 7 may also not have a variable paving width. The base screed section 14 and each extended screed 15 have a smooth plate 16 on the underside, on which at least one vibration device 17 is arranged which can be operated at a selectable rotational speed, so that the smooth plate 16 serves as a compacting element 6 on the paving screed 7. The other compacting element 6 is a tamping machine with at least one tamping rod 18 with an eccentric drive 19, the rotational speed v' and / or the eccentricity, i.e. the stroke H, being selectable, wherein the tamping machine produces the first precompacting stage on the paving screed 7 in the paving direction R for precompacting the paving material M.

[0045] Apart from Figure 2 In addition to the construction of the paving screed 7 shown in FIG. Figure 3 The paving screed 7 ′ shown in the figure also has at least one pressure bar 20 as a further compacting element 6, which can be operated by a hydraulic drive 21 with vertical pressure pulses and, if necessary, with adjustable acceleration and further pre-compacts in the paving direction R behind the screed 16 with a selectable contact pressure F.

[0046] exist Figure 2 and 3The compacting elements 6 used on the respective paving screeds 7, 7' are controlled by the screed control device 8 so that they produce the desired pre-compaction performance V L It can be controlled according to the paving speed v driven by the road paver 3 so that the target pre-compaction V stored in the control system 2 is soll A constant precompaction V is achieved in the resulting paving layer D.

[0047] Pre-compaction performance V L The correction factor f(v) is changed by means of the correction factor f(v), which is calculated by the control system 2 based on the changed paving speed v, in particular with regard to the predicted change in the pre-compaction V caused by the speed adjustment, and is fed directly or indirectly via the vehicle control device 5 to the screed control device 8. In this way, it is achieved that the compacting elements 6 operating on the respective paving screed 7, 7' have their pre-compaction performance V L Adaptation of the paving speed v, in particular the maximum paving speed V entered B Or according to the material delivery rate P L Calculated maximum paving speed v max , so that a constant pre-compaction V is produced by means of the paving screed 7 , 7 ′.

[0048] Figure 4 A schematic diagram of a concept according to the present invention is shown, according to which the paving speed v (in particular the maximum paving speed v max ) with time delay t x Adapts to changing material delivery rates P L , so along with the pre-compaction performance V L The change in V remains constant.

[0049] Figure 4 In particular, it is shown that as the material delivery rate P L Increase, paving speed v or at time t x Enter or calculate the maximum paving speed v B 、v max is also stored in a time-delayed manner in the vehicle control device 5 and, as a function of this delay, the precompaction performance V is adjusted in the screed control device 8 by means of the correction factor f(v). L , so that a constant pre-compaction V can be produced.

[0050] exist Figure 4 The time axis t in the figure is related to the material delivery rate P L Adapted, increased pre-compaction performance V L At the material delivery rate P L The reduction in the case can be reduced with a time delay and at the same time adapted to the material delivery rate P L The paving speed v is reduced to keep the precompaction V constant.

[0051] Figure 5 A schematic diagram of a material supply Q in the immediate vicinity of a road paver 3 is shown, which can be used as a material delivery rate P L and the paving speed v of the road paver 3. The material reserve Q may correspond to the amount of paving material M stored in the hopper 10 of the road paver 3. If a feeder 11 is used at the construction site, the material reserve Q results from the sum of the paving material M contained in the feeder 11 and the respective hoppers of the road paver 3.

[0052] Material delivery rate P L When it is constant, it can be assumed that as the paving speed v increases, the material reserve Q at the construction site decreases, and as the paving speed v decreases, the material reserve Q increases. Figure 5 It shows that the material reserve Q in the immediate vicinity of the road paver 3 does not exceed the maximum material reserve Q max And not less than the minimum material reserve Q min The control system 2 may be configured to select a paving speed setpoint v stored in the vehicle control device 5 soll , especially the maximum paving speed v max , in such a way that the minimum material reserve Q is not less than min and / or not exceed the maximum material reserve Q max .

[0053] The control system 2 is configured to determine the minimum material reserve Q of the paving material M directly available in the vicinity of the road paver 3 according to a preselected minimum material reserve Q min and / or according to a pre-selected maximum material reserve Q max Adjust the paving speed setting value v soll , so that in the paving process E, the paving material M directly available near the road paver 3 is not less than the minimum material reserve Q min and / or the paving material M directly available near the road paver 3 is no more than the maximum material reserve Q max .

[0054] Figure 5 The fluctuations in the material supply Q shown may be the result of disturbances in the material supply chain L. For example, fluctuations in the material reserve Q may be caused by unexpectedly high traffic flow on the way from the mixing plant W to the construction site.

[0055] Figure 6 A schematic diagram of the paving speed v controlled on a road paver 3 during a paving process E is shown. In particular, Figure 6 The time from time t1 to time t2 at the initial paving speed v initialAt time t2, the material delivery rate P which changes during the paving process E is detected by the control system 2. L The control system 2 then determines a new paving speed v, in this case a new maximum paving speed v max , which corresponds to the maximum paving speed v entered by the operator at time t3 B This is because at time t2, the material delivery rate P L The size of the maximum paving speed v determined by the control system 2 is max Greater than the maximum paving speed v entered by the operator B , so that the maximum paving speed v entered by the operator B The control system 2 stores the information in the vehicle control device 5 of the road paver 3 .

[0056] Target layer thickness S soll and target precompaction V soll The initial paving speed v of the road paver 3 defined before the paving process E begins can be regarded as initial The process parameters are stored in the control system 2, wherein the initial paving speed v at the beginning of the paving process E is initial As the paving speed setting value v soll is stored in the vehicle control device 5 of the road paver 3, and wherein the control system 2 is configured to respond to a speed change detected on the road paver 3 or a speed change determined by means of the control system 2 to input a paving speed setpoint value v for the paving process E soll Or based on the material delivery rate P L Calculated paving speed setting value v soll , taking into account the natural variation of the precompaction V that can be predicted based on speed variations, the calculation is used to adjust the maximum paving speed v B , v max The correction factor f(x) is calculated and stored in the screed control device 8 of the road paver 3, so that the screed control device 8 adjusts the operation of the compacting element 6 by means of the correction factor f(x), so that the pre-compaction V achieved by the speed change corresponds to the initial paving speed v initial Define the target pre-compaction V soll .

[0057] Between time t2 and time t3, the time interval determined by the control system 2 from time t x The derived ramp function y is used to continuously increase the speed until the paving speed v corresponds to the maximum paving speed v entered by the user in the control system 2 B .

[0058] At time t4, the control system 2 determines the material delivery rate P L The maximum paving speed v calculated by the control system 2 and resulting from this is max The maximum paving speed v is stored in the vehicle control device 5 of the road paver 3 from the time t5. max Below the maximum paving speed v entered by the user B , corresponding to a reduced material delivery rate P L , and can therefore be stored in the vehicle control device 5 of the road paver 3 as calculated by the control system 2 .

[0059] At time t6, the control system 2 detects a further decrease in the material delivery rate P L Therefore, the appropriate maximum paving speed v max From time t7 onwards, it will be lower, so that according to the further reduced material delivery rate P L The paving process E is carried out even more slowly.

[0060] Maximum paving speed v max The intervals between Figure 6 As shown, the ramp function y is used to change the speed with a corresponding gradient. The gradient can be selected according to the speed change. In particular, the gradient can be set so flat that the acceleration does not exceed the maximum value due to the inertia of the system and components.

[0061] Figure 7 shows the pre-compaction performance V L according to Figure 6 The speed curve shown is a schematic diagram of the adjustment such that the paving screed 7 , 7 ′ achieves a constant pre-compaction V. The operation of the respective compactor element 6 on the paving machine 7 , 7 ′ is controlled as a function of the paving speed v of the road paver 3 .

Claims

1. A road construction system for a paving process (E), characterized in that The road construction system (1) comprises: Control system (2), including: - a determination unit for determining a material delivery rate (P L ), a paving speed (v) of the road paver (3) corresponding to the - a regulating unit for adjusting the material delivery rate (P L ) to adjust the pre-compacting performance (V) of at least one pre-compacting element (6) of the paving screed (7, 7') of the road paver (3) according to the paving speed (v) L ) in order to keep the precompaction (V) achieved by means of the precompacting element (6) constant; at least one road paver (3) functionally connected to the control system (2); at least one material supply chain (L) for supplying paving material (M) to said road paver (3); and At least one logistics system (4), functionally connected to the control system (2), comprising: - a detection unit for detecting a variable material delivery rate (P L ), - a communication unit for communicating the detected variable material delivery rate (P L ) communicates with the control system (2).

2. The road construction system according to claim 1, characterized in that: The control system (2) is configured to take into account the material delivery rate (P) indicated to it by the logistics system (4) L ) determines the maximum possible paving performance (P E ) in order to calculate the maximum paving speed (v) of the road paver (3) from the layer thickness (S) and the layer width (T) to be produced by means of the paving screed (7, 7') max ), and if the maximum paving speed (v max ) is less than or equal to the maximum paving speed (v) input as a limiting condition by the user on the control system (2) B ), the maximum paving speed (v max ) as the paving speed setting value (v soll ) is stored in a vehicle control device (5) of the road paver (3) functionally connected to the control system (2), or, if the maximum paving speed (v max ) is greater than the maximum paving speed (v B ), the control system (2) is configured to take the maximum paving speed (v B ) as the paving speed setting value (v soll ) is stored in a vehicle control device (5) of the road paver (3) which is functionally connected to the control system (2).

3. The road construction system according to claim 2, characterized in that: The control system (2) is configured to determine the changing material delivery rate (P L ) to calculate the correspondingly adjusted new maximum paving speed (v max ), and determine the new maximum paving speed (v max ) is stored in the vehicle control device (5) of the road paver (3) x ).

4. The road construction system according to claim 3, characterized in that: The control system (2) is configured to adjust the paving material (M) according to a preselected minimum material reserve (Q) of the paving material (M) directly available in the vicinity of the road paver (3). min ) and / or based on a pre-selected maximum material reserve (Q max )Adjust the paving speed setting value (v soll ), so that during the paving process (E), the paving material (M) directly available near the road paver (3) is not less than the minimum material reserve (Q min ) and / or the paving material (M) directly available in the vicinity of the road paver (3) is no more than the maximum material reserve (Q max ).

5. The road construction system according to claim 2, characterized in that: The control system (2) is configured to adjust the paving material (M) according to a preselected minimum material reserve (Q) of the paving material (M) directly available in the vicinity of the road paver (3). min ) and / or based on a pre-selected maximum material reserve (Q max )Adjust the paving speed setting value (v soll ), so that during the paving process (E), the paving material (M) directly available near the road paver (3) is not less than the minimum material reserve (Q min ) and / or the paving material (M) directly available in the vicinity of the road paver (3) is no more than the maximum material reserve (Q max ).

6. The road construction system according to any one of claims 1 to 5, characterized in that: Target layer thickness (S soll ) and target precompaction (V soll ) can be used as an initial paving speed (v) of the road paver (3) defined before the paving process (E) begins. initial ) are stored in the control system (2), wherein the initial paving speed (v initial ) as the paving speed setting value (v soll ) is stored in a vehicle control device (5) of the road paver (3), and wherein the control system (2) is configured to respond to a speed change detected on the road paver (3) or a speed change determined by means of the control system (2) to input a paving speed setpoint (v) for the paving process (E) soll ) or based on material delivery rate (P L )Calculated paving speed setting value (v soll ), taking into account the natural variation of precompaction (V) that can be predicted based on speed variations, the calculation is used to adjust the maximum paving speed (v B , v max ) and storing it in a screed control device (8) of the road paver (3), so that the screed control device (8) adjusts the operation of the compacting element (6) with the aid of the correction factor (f(x)) so that the pre-compaction (V) achieved by the speed change corresponds to the initial paving speed (v initial ) defined by the target pre-compaction (V soll ).

7. The road construction system according to claim 6, characterized in that: The screed control device (8) is configured to use a correction factor (f(x)) to change the stroke (H) of the compacting element (6), to change the executable contact pressure (F) of the compacting element (6), and / or to change the speed (v') of the compacting element (6).

8. The road construction system according to claim 6, characterized in that: The road paver (3) is configured to measure in real time the layer thickness (S) produced, thereby being able to determine a target layer thickness (S) according to the detected target layer thickness (S) soll ) and can be supplied to the screed control device (8) for height control of the paving screed (7, 7'), and / or the road paver (3) is configured to perform real-time measurement of the resulting precompaction, wherein a correction factor (f(S)) is derived from the layer thickness of the layer with the deviation from the target precompaction (V) determined thereby. soll ) of the pre-compaction deviation, and is capable of controlling a compactor vehicle (12) that compensates for the pre-compaction deviation by means of dynamic post-compaction modulation, so that the total residual compaction deviation is minimized.

9. The road construction system according to any one of claims 1 to 5, characterized in that: At least one part of the control system (2) can be used as a cloud-based application (C) and is configured to detect predetermined construction planning values, such as from a control center connected thereto, and / or dynamic paver and screed process data of the road paver (3) determined during the paving process (E), and based thereon determine at least one target process value and / or at least one correction factor and transmit them to another part of the control system (2), the control system (2) providing the calculated target value and correction value to the vehicle control device (5) and / or the screed control device (8).

10. The road construction system according to claim 9, characterized in that: At least one of the target process values ​​is associated with different material delivery rates (P L ) Suitable pre-compaction performance (V L ).

11. The road construction system according to claim 9, characterized in that: At least one of the correction factors is used to adjust the precompaction performance (V L ) correction coefficient (f(x)).

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