Ground stabilisation adhesive application apparatus and method

Abstract

An adhesive application device for ground stabilization, having a metering device (19), characterized in that it comprises a data storage device (25) for storing a layer thickness data set comprising layer thickness data. The layer thickness data each describe a layer thickness of a material layer applied to a compacted ground at a point in the terrain in a coordinate reference system independent of the adhesive application device. The layer thickness data set can be read into the data storage device (25), which data set can then be used for further data processing. The metering device (19) also has a control and / or computing device (24) which is configured such that layer thickness data of the layer thickness data set are read from the data storage device and the metering device is controlled to apply a predetermined amount of adhesive in accordance with the layer thickness of the material layer applied. The invention also relates to a method for applying adhesive.

Description

Technical Field

[0001] This invention relates to an adhesive application device for ground stabilization, comprising: an adhesive container for containing adhesive; and a metering device having a metering element, the metering device having a control and / or calculation device designed to apply a predetermined amount of adhesive using the metering element. Furthermore, this invention relates to a method for applying adhesive to an uncompacted material layer using the adhesive application device, wherein the uncompacted material layer has been applied to a compacted surface using a self-propelled material application device prior to the application of the adhesive, and the surface has been compacted using a self-propelled ground compaction device prior to the application of the uncompacted material layer. Background Technology

[0002] To improve or stabilize ground surfaces, adhesives are known to be incorporated into the surface to enhance its workability and load-bearing capacity. Typical applications for ground stabilization include creating load-bearing surfaces for the construction of roads, plazas, or buildings.

[0003] Known ground stabilizers or regenerators include: a collection container for an adhesive (such as lime or cement); a spreading device for applying the adhesive to the ground; and a milling or mixing rotor that can mill the ground and mix the adhesive into the ground immediately after application. In this case, powdered adhesive is typically mixed into the ground. Besides stabilizers or regenerators, there are also known construction machines that can only apply adhesive to the ground but cannot mix it into the ground. These construction machines are also known as adhesive spreaders.

[0004] Self-propelled stabilizers or regenerators have a construction machinery frame supported by a wheeled chassis and a drive unit for the wheels, as well as a milling or mixing rotor. Known adhesive spreaders have a collection container and spreading equipment for applying adhesive to the ground. Both self-propelled and non-self-propelled adhesive spreaders are known. Non-self-propelled spreaders are attached to or towed by a tractor, particularly a tractor. Adhesive spreaders, stabilizers, or regenerators have control and / or calculation equipment designed to apply a predetermined amount of adhesive via a rotary valve.

[0005] An adhesive applicator is known from EP 2 216 444 A2. EP 1 012 396 B1 describes a stabilizing or regenerating machine having an integrated device for applicating powdered adhesive. The adhesive is disposed in a funnel-shaped storage container, and a metering element is arranged at the lower end of the storage container. The metering element is a rotary valve through which the adhesive can be metered.

[0006] In practice, terrain leveling typically requires the application of several layers of material in a continuous operation, with each layer compacted after application. This involves the use of an adhesive, which is mixed separately with each applied material. Compaction of the material is usually done using a roller, which has rollers for compacting the material. For example, a grader is used to apply material layers, having scrapers for distributing and leveling the material. An adhesive spreader is typically used to apply the adhesive. For instance, in the aforementioned operation, a roller compacts the previously applied material (ground) mixed with adhesive. Then, a grader applies the material (ground) to the compacted surface, spreading and leveling it through the grader's scrapers. Then, an adhesive spreader applies a predetermined amount of adhesive to the leveled surface, which is then mixed again with the ground by a subsequent stabilizer and compacted again by a roller. This process can be repeated multiple times.

[0007] The amount of powdered or liquid adhesive applied to the ground for stabilization using an adhesive application device depends on several factors, primarily the nature of the ground and the thickness of the subfloor layer. Insufficient adhesive will result in insufficient load-bearing capacity of the ground. Conversely, excessive adhesive will increase costs and also compromise load-bearing capacity.

[0008] The term GPS (Global Positioning System) describes a positioning system that determines location based on the propagation time of signals from multiple satellites. The abbreviation GPS is now used colloquially and even sometimes in technical language as a general term or to refer to all satellite navigation systems correctly categorized under the abbreviation GNSS (Global Navigation Satellite System) (Wikipedia: GPS). Many self-propelled construction machines are equipped with GNSS receivers for receiving satellite signals from the Global Navigation Satellite System. Summary of the Invention

[0009] This invention aims to provide a ground stabilizing adhesive application device that allows for optimization of the amount of adhesive applied. Another objective is to provide a method for applying adhesive, which allows for optimization of the amount of adhesive applied. A further objective is to simplify the addition of specific amounts of adhesive.

[0010] These objectives are achieved through the features of the independent claims. The dependent claims relate to preferred embodiments of the invention.

[0011] The embodiments of the invention described below may include one or more features or combinations of features mentioned below. Features specified with an indefinite article may appear more than once even if the indefinite article is not understood to explicitly refer to a single use. Features specified with a number (e.g., "first and second") do not exclude the number of such features being greater than the number indicated by the number. In all descriptions of embodiments, the expression "may" should also be understood as "preferably" or "suitably".

[0012] One embodiment of the adhesive application device for ground stabilization according to the invention includes a metering device, characterized by comprising a data storage device for storing a layer thickness dataset including layer thickness data. The layer thickness data describes the layer thickness of the material layer applied to the compacted surface at a point in the terrain, in a coordinate reference system independent of the adhesive application device. The layer thickness dataset can be read into the data storage device via an interface, and the dataset can then be used for further data processing.

[0013] The metering device also includes a control and / or calculation device configured to read layer thickness data from a data storage device and actuate a metering element of the metering device as the adhesive application device advances, thereby applying a predetermined amount of adhesive based on the layer thickness of the applied material layer. Therefore, the amount of adhesive applied is adjusted according to the layer thickness, with larger layer thicknesses requiring more adhesive than smaller layer thicknesses. In this case, it should be considered that the layer thickness of the applied layer can continuously change as the adhesive application device advances. If the layer thickness decreases, the control and / or calculation device can correspondingly reduce the amount of adhesive. However, if the layer thickness increases, the control and / or calculation device can correspondingly increase the amount of adhesive. The control and / or calculation device thus ensures that the optimal amount of adhesive is always metered, even when the layer thickness changes. This ensures that the surface has sufficient load-bearing capacity and that adhesive consumption is minimized. However, other factors can also be considered when controlling the amount of adhesive, particularly the properties of the surface. Regardless of the surface properties, thicker layers always require a larger amount of adhesive.

[0014] The control and computing device and / or data storage device may be part of the central control and computing device or the central storage device of the adhesive application device, or a portion of the control and computing device and / or data storage device may be part of the central control and computing device or the central storage device of the adhesive dispensing device.

[0015] The adhesive application device according to the invention may include a construction machinery position determination device configured to generate construction machinery position data describing the position of a construction machinery reference point assigned to the adhesive application device in a coordinate reference system independent of the adhesive application device. This reference point may be a point located on the construction machinery, describing the position of the construction machinery in the coordinate reference system. For example, the reference point may be located at the outlet of a metering device.

[0016] The control and / or calculation device can be configured to determine the layer thickness of the applied layer at the current position of the construction machinery based on layer thickness data and construction machinery position data, and to actuate the metering element of the metering device during the advance of the adhesive application device to apply an amount of adhesive (positively) related to the layer thickness. The layer thickness data describes the layer thickness at a specific location in the terrain, while the construction machinery position data describes the position of the adhesive application device in the terrain. Because both layer thickness data and position data are available for the adhesive application device, an amount of adhesive related to the layer thickness can be continuously applied based on its current position during the advance of the adhesive application device. In this case, the amount of adhesive can be adjusted continuously or in specific steps, for example, depending on the distance traveled or the time period.

[0017] The interface used to receive the layer thickness dataset can be a cloud interface for reading the dataset from a data storage device in a computer cloud, or an interface for reading data from a data storage device on a local network. However, data can also be read into the data storage device via any other interface, such as a USB interface from a USB storage device. In this case, how the layer thickness dataset is generated is irrelevant. However, the key is that the layer thickness dataset must contain all the necessary information regarding the layer thickness at different locations within the specified terrain.

[0018] In another embodiment of the adhesive application device according to the invention, the metering device has a data storage device for storing: a first elevation profile dataset, including first elevation profile data that respectively describe the elevation of the ground compacted in a previous operation using a ground compaction device at a point in the terrain in a coordinate reference system independent of the adhesive application device; and a second elevation profile dataset, including second elevation profile data that respectively describe the elevation of a material layer applied to the compacted ground in an operation following a previous operation using a material application device at a point in the terrain in a coordinate reference system independent of the adhesive application device.

[0019] The control and / or computing device is configured to read a first elevation profile dataset and a second elevation profile dataset from a data storage device, and generate layer thickness data based on the elevation information of the first and second elevation profile data. These layer thickness data describe the layer thickness of a material layer applied to the compacted ground at a point in the terrain, in a coordinate reference system independent of the adhesive application device. The layer thickness data can then be stored again in the storage device. The layer thickness data can be generated continuously during the advance of the adhesive application device. However, the layer thickness dataset can also be pre-generated based on the elevation information from the first and second elevation profile data, and then sequentially read from the storage device during the advance of the adhesive application device.

[0020] The control and / or computing device is also configured to read layer thickness data from a layer thickness dataset from a storage device and actuate a metering element of a metering device to apply a predetermined amount of adhesive using the metering element according to the layer thickness of the applied material layer during the advancement of the device for application.

[0021] Control and / or computing devices can be configured to determine layer thickness data from a first elevation profile dataset and a second elevation profile dataset, respectively, based on calculations of the difference between the elevation of the layer applied to the compacted ground and the elevation of the compacted ground in the terrain. If a uniform coordinate reference system is provided for all construction machinery at the construction site (as is often the case in practice), the layer thickness can be easily determined from the available data.

[0022] In this embodiment, the adhesive application device may include a construction machinery position determination device configured to generate construction machinery position data describing the position of a construction machinery reference point assigned to the adhesive application device in a coordinate reference system independent of the adhesive application device. A control and / or calculation device may be configured to determine the layer thickness of the applied layer based on the layer thickness data and the construction machinery position data, and to actuate a metering element of a metering device during the advancement of the adhesive application device to apply an amount of adhesive related to the layer thickness using the metering element.

[0023] A particular aspect of the invention lies in determining the layer thickness to generate layer thickness data. Advantageously, the first and second elevation profile data can be determined by the construction machinery itself during a joint operation involving multiple construction machines. The layer thickness can then be determined based on the first and second elevation profile data. Therefore, measuring the layer thickness outside of this operation is not necessary, which simplifies the entire process.

[0024] The metering device may include an interface for receiving a first elevation profile dataset and a second elevation profile dataset, and specifically a cloud interface for reading the first and second elevation profile datasets from a data storage device in a computer cloud. Therefore, the first and second elevation profile data (which are recorded along with other construction machinery involved in the work process) can be read into the data storage device of the computer cloud and retrieved from the data storage device of the computer cloud by the metering device of the adhesive application equipment. Layer thickness calculations can be performed either on the adhesive application equipment or in the computer cloud.

[0025] Another alternative implementation provides first elevation profile data obtained solely from the different construction machinery involved in the work process. Second elevation profile data is recorded by the adhesive application equipment itself. In this embodiment, the adhesive application equipment has an elevation location determination device configured to generate elevation location data describing the location of an elevation reference point assigned to the adhesive application equipment in a coordinate reference system independent of the adhesive application equipment. The metering device has a data storage device for storing a first elevation profile dataset, which includes first elevation profile data describing the elevation of ground compacted in a previous operation at a point in the terrain using ground compaction equipment in a coordinate reference system independent of the adhesive application equipment.

[0026] The control and / or computing device is configured to generate second elevation profile data based on elevation location data from an elevation location determination device. This second elevation profile data describes the elevation of a material layer applied to a compacted surface using the material application device in an operation following a previous operation, at a point in the terrain, in a coordinate reference system independent of the adhesive application device. Therefore, the second elevation profile data can be generated using an elevation location determination device, which is part of the adhesive application device.

[0027] The control and / or computing device is configured to read a first elevation profile dataset from a data storage device and generate layer thickness data based on elevation information from the first and second elevation profile data, which respectively describe the layer thickness of a material layer applied to a compacted ground at a point in the terrain in a coordinate reference system independent of the adhesive application device.

[0028] The control and / or computing device is also configured to actuate the metering element of the metering device to apply a predetermined amount of adhesive using the metering element according to the layer thickness of the applied material layer during the advance of the adhesive application device.

[0029] In principle, under these circumstances, a layer thickness dataset can also be generated from the thickness data of each layer (for subsequent use, specifically for construction site documentation).

[0030] The adhesive application device may include a construction machinery positioning device configured to generate construction machinery position data describing the position of a construction machinery reference point assigned to the adhesive application device in a coordinate reference system independent of the adhesive application device, and a control and / or calculation device may be configured to continuously determine the layer thickness of the applied layer during the advance of the adhesive application device based on layer thickness data and the construction machinery position data generated by the construction machinery positioning device, and to actuate a metering element of a metering device to apply an amount of adhesive related to the layer thickness using the metering element.

[0031] In this embodiment, the metering device only needs to include an interface for receiving the first elevation profile dataset, and in particular a cloud interface for reading the first elevation profile dataset from a data storage device in a computer cloud, since the second elevation profile data is generated on the adhesive application device itself.

[0032] The elevation positioning equipment and construction machinery positioning equipment can be two separate devices or a single, shared device that determines the positions of two distinct reference points. One reference point indicates the elevation of the material layer on which the adhesive application equipment moves within the terrain, while the other reference point indicates the current location of the adhesive application equipment, specifically the location of the adhesive application, such as the outlet of a metering element. However, if a common reference point, such as the outlet of a metering element, can be found, the first and second reference points do not need to be different points.

[0033] A unified coordinate reference system can be any coordinate system, such as a geodetic coordinate system. Elevation location determination equipment and construction machinery location determination equipment may include at least one GNSS receiver for receiving satellite signals from a global satellite system. Such systems are generally part of the prior art and are typically already installed in known construction machinery.

[0034] The present invention also relates to a method for applying adhesive to an uncompacted material layer using an adhesive application device, wherein the uncompacted material layer has been applied to a compacted ground using a self-propelled material application device in an operation prior to the application of adhesive, and wherein the ground has been compacted using a self-propelled ground compaction device in an operation prior to the application of uncompacted material. A mapping system is provided, which is designed to determine the positions of reference points associated with the ground compaction device and the positions of reference points associated with the material application device or adhesive application device in a coordinate system.

[0035] The method for applying an adhesive according to the present invention includes the following method steps:

[0036] During ground compaction using ground compaction equipment, a surveying system is used to determine the elevation of reference points associated with the ground compaction equipment, and During the application of material using a material application device, a surveying system is used to determine the elevation of reference points associated with the material application device; similarly, during the application of adhesive using an adhesive application device, a surveying system is used to determine the elevation of reference points associated with the adhesive application device. The layer thickness of the applied material layer is determined based on the difference between the elevation positions of reference points associated with the material application equipment and those associated with the ground compaction equipment, or based on the difference between the elevation positions of reference points associated with the adhesive application equipment and those associated with the ground compaction equipment. During the advance of the adhesive application device, a predetermined amount of adhesive is applied to the uncompacted material layer using a metering device installed on the adhesive application device, based on the determined layer thickness of the applied material layer.

[0037] The adhesive application equipment can be an adhesive spreader with a frame supported on wheels, or a ground stabilizer or regenerator with a frame supported on wheels. The reference point for the elevation positioning equipment can be located at the height of the wheel's contact surface. However, the adhesive spreader, ground stabilizer, or regenerator can also, in principle, have a tracked chassis instead of wheels, in which case the reference point is located at the height of the tracked chassis's contact surface.

[0038] Ground compaction equipment can be a road roller with a frame supported by wheels and a roller. The reference point for determining the elevation position of the equipment can be located at the height of the contact surface of the wheels or roller.

[0039] The material application equipment can be a grader with a frame supported by wheels, or in principle, by a tracked chassis, on which a scraper for distributing and leveling the material is installed, and the reference point for the elevation position determination equipment can be located at the height of the lower edge of the scraper. Attached Figure Description

[0040] Several exemplary embodiments of the apparatus and method according to the present invention will now be explained in more detail with reference to the accompanying drawings. In the attached diagram: Figure 1A This is a simplified schematic diagram of a road roller used to compact a layer of material applied to the ground and mixed with an adhesive. The road roller is in the first position. Figure 1B It shows Figure 1A The road roller is in the second position. Figure 2A This is a simplified schematic diagram of a grader used to apply and distribute material on a material layer compacted by a road roller, with the grader in the first position. Figure 2B It shows Figure 2A The grader is in the second position. Figures 3A to 3F The diagram illustrates an adhesive spreader traveling over a layer of material applied and distributed by a grader, the spreader applying a predetermined amount of adhesive according to the layer thickness. Figure 4 This is a schematic diagram illustrating a first exemplary embodiment of an adhesive application device, including an adhesive spreader, a computer cloud, a satellite of a global satellite system, and an external computing unit. Figure 5 This is a schematic diagram illustrating a second exemplary embodiment of an adhesive application device, including an adhesive spreader, a computer cloud, satellites of a global satellite system, and an external computing unit. Figure 6 This is a schematic diagram illustrating a third exemplary embodiment of an adhesive application device, including an adhesive spreader, a computer cloud, a satellite of a global satellite system, a grader, and a road roller. Figure 7 This is a schematic diagram illustrating a fourth exemplary embodiment of an adhesive application device, including an adhesive spreader, a computer cloud, a satellite of a global satellite system, and a road roller. Figure 8 This is a simplified diagram of a regenerator or stabilizer. Detailed Implementation

[0041] Figure 1A and Figure 1B A simplified schematic diagram of a device for compacting material W as it is driven over a layer of material previously applied to the ground, mixed with adhesive, and substantially leveled. The material 1 applied to the ground and mixed with adhesive can then be compacted... Figure 1A and Figure 1B Seen from the left. The material compaction device W moves from right to left in the working direction 2, thereby compacting the material 1. The compacted ground 3 has an elevation designated as HW. In this exemplary embodiment, for the sake of simplicity, it is assumed that the compacted ground 3 has a flat surface.

[0042] In this exemplary embodiment, the material compaction device W is a conventional road roller, also known as a drum roller. The road roller W has a frame 6, which is supported in the working direction 2 by a front roller belt 4 and a rear wheel 5, and has a work platform 7.

[0043] Figure 2A and Figure 2BFurther operation is shown, in which material 8 is applied to the compacted ground 3 using material application device G. Figure 1A and Figure 1B On the figure. Corresponding parts in the figure are again indicated by the same reference numerals. In this exemplary embodiment, the material application device G is a self-propelled construction machine for producing a large flat surface, also known as a grader or leveling machine. The grader G has a frame 10, which is supported by front and rear wheels 9 in the working direction 2, and has a work platform 11. The grader G has a movable scraper 12 for distributing and leveling the material. Uncompacted material 8 applied to the compacted ground 3 is... Figure 2A and Figure 2B The middle layer is simplified to a material layer with a constant layer thickness.

[0044] Figures 3A to 3F Further operation is shown, wherein a predetermined amount of adhesive 13 is applied to the uncompacted material layer 8 using adhesive application device B. Figure 2A and Figure 2B (See figure). Corresponding parts in the figures are again indicated by the same reference numerals. Adhesive 13 is then mixed with the uncompacted material 8 and compacted, but not shown in the figure. Another layer of material can then be applied to the compacted surface using a material application device, and a predetermined amount of adhesive can be applied to the uncompacted material layer using an adhesive application device. The adhesive can then be mixed with the material and compacted again using a material compaction device.

[0045] Figures 3A to 3F The exaggerated illustrations drawn to scale show the compacted ground 3 to which material layer 8 is applied. Figure 1A and Figure 1B as well as Figure 2A and Figure 2B The material layer 8 is shown as flat, but in reality it can present as raised areas 3a and recessed areas 3b. The material layer 8 can also be applied unevenly. Both of these factors will cause variations in the thickness of the material layer 8, and these variations must be taken into account when applying the adhesive.

[0046] In this exemplary embodiment, the adhesive application device B for ground stabilization is an adhesive spreader having a frame 16 supported by front wheels 14 and rear wheels 15 and a cab 17. However, the adhesive application device B can also be part of a regenerator or stabilizer, which integrates equipment for applying powdered adhesive (adhesive spreader) or equipment for applying liquid adhesive. Therefore, a regenerator or stabilizer can also function as an adhesive application device. Using a regenerator or stabilizer has the advantage that the adhesive can be mixed into the ground immediately after application. For example, this can reduce or completely prevent the adhesive from being blown away by the wind. Reference will be made below. Figure 8 Exemplary implementations of a regenerator or stabilizer are described.

[0047] The adhesive applicator B includes: an adhesive container 18 for holding adhesive; and a metering device 19 having a metering element 20. In this exemplary embodiment, the metering element 20 is located at the rear of the frame 16 and extends throughout the entire working width of the applicator.

[0048] Figure 1A and Figure 1B , Figure 2A and Figure 2B as well as Figures 3A to 3F The diagram illustrates the use of material compaction equipment W (particularly a road roller), material application equipment G (particularly a grader G), and adhesive application equipment B (particularly an adhesive spreader, regenerator, or stabilizer) throughout the work process.

[0049] The following is for reference. Figure 4 A first exemplary embodiment of the adhesive application device B is described. Corresponding parts in the drawings are again equipped with the same reference numerals. Figure 4 A highly simplified schematic diagram illustrates the adhesive applicator B, computer cloud 21, satellites 22A, 22B, and 22C of the global navigation satellite system 22, and external data processing facility 23 used to illustrate the entire working process. Figure 4 The frame 16 of an adhesive spreader B is shown, which is supported by wheels 14 and 15. The adhesive spreader B has a metering device 19, which includes a control and / or computing device 24, a data storage device 25, an interface 26, and a metering element 20 that extends across the working width of the adhesive spreader on the rear portion of the frame 16.

[0050] The control and / or computing device 24 is understood to be a device designed to perform actions required for the operation of the metering equipment. The control and / or computing device may have, for example, a general-purpose processor, a digital signal processor (DSP) for continuous processing of digital signals, a microprocessor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other integrated circuits (ICs) or hardware components. Data processing programs (software) may run on the hardware components. Combinations of various components are also possible. The control and / or computing device 24 may be part of the central control and / or computing device of the adhesive applicator, or a component of the control and / or computing device may be part of the central control and / or computing device of the adhesive applicator, which may perform further actions.

[0051] In this exemplary embodiment, interface 26 is a cloud interface for reading the layer thickness dataset D(x, y) from data storage device 21A of computer cloud 21. Data processing device 23 available in the planning office can then exchange data with computer cloud 21, allowing the layer thickness dataset D(x, y) to be created in the planning office and uploaded to the computer cloud. The interface can also be configured to communicate directly with interfaces of other devices, such as data processing device 23. The cloud interface can then be assigned.

[0052] The layer thickness dataset D(x, y) includes layer thickness data D1(x1, y1), D2(x2, y2), and D3(x3, y3). …… The data, Dn(xn, yn), describe the layer thickness D of the material layer 8 applied to the compacted ground 3 at a point in the terrain, in a coordinate reference system (x, y) independent of the adhesive application device B. The coordinate reference system (x, y) can be a geodetic coordinate system of a global navigation satellite system, which may include multiple satellites. For better illustration, in an exemplary embodiment, the location of the point of the material layer 8 having a specific layer thickness D is specified not by latitude and longitude, but by coordinates (x, y) in a Cartesian coordinate system (x, y, z).

[0053] Additionally, the adhesive applicator B includes a construction machinery position determination device 27, which is designed to generate construction machinery position data that describes the position of the construction machinery reference point RB assigned to the metering element 20 in a coordinate reference system. The construction machinery position determination device 27 has a GNSS receiver 27a for receiving satellite signals from the Global Navigation Satellite System 22. The construction machinery position data is sufficient to describe the position of the reference point RB on the terrain surface. Elevation information is not required. In this exemplary embodiment, the construction machinery reference point RB is located at the outlet 20a of the metering element 20, preferably centered on an axis 20b extending transversely to the direction of travel of the adhesive applicator, along which the adhesive is applied through the metering element 20.

[0054] Control and / or computing device 24 is configured to read layer thickness data, specifically layer thickness datasets D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn), downloaded from computer cloud 21, from data storage device 25 via interface 26. Control and / or computing device 24 receives not only layer thickness data but also construction machinery position data from construction machinery position determination device 27. Based on the layer thickness data (which specifies the layer thickness at a point in the terrain) and the construction machinery position data (which specifies the current location of the outlet of metering element 20), control and / or computing device 24 continuously determines the layer thickness D of the applied layer during the advance of adhesive spreader B and controls metering device 20 to apply an amount of adhesive associated with layer thickness D.

[0055] To measure the amount of adhesive, the control and / or calculation device 24 may use a suitable algorithm that measures the amount of adhesive that increases with increasing layer thickness, and the amount of adhesive applied per unit time also depends on the forward speed of the adhesive applicator B. Other factors (particularly the properties of the ground) may also be taken into account when measuring the required amount of adhesive.

[0056] Figure 5 Another exemplary embodiment of the adhesive applicator B is shown, which is consistent with the reference. Figure 4 The difference in the described exemplary implementation is that, instead of providing a layer thickness dataset, the adhesive spreader is provided with a first elevation profile dataset HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn) and a second elevation profile dataset HG1(x1, y1), HG2(x2, y2), HG3(x3, y3), ..., HGn(xn, yn). In this exemplary implementation, the first and second elevation profile datasets are uploaded from the planning office's data processing device 23 to the computer cloud 21, and downloaded from the computer cloud via cloud interface 26 and stored in the adhesive spreader B's storage device 25. In principle, interface 26 can also be configured to receive the first elevation profile dataset HW and the second elevation profile dataset HG from different sources. Specifically, interface 26 can be configured to communicate directly with the material compaction device W and the material application device G, and to receive the first elevation profile dataset and the second elevation profile dataset directly from these devices.

[0057] The first elevation profile dataset HW(x, y) includes elevation profile data HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn). These data describe the elevation of the ground 3 compacted by the roller W in the previous operation at a certain point in the terrain in a coordinate reference system (x, y) independent of the adhesive spreader B. The second elevation profile dataset HG(x, y) includes elevation profile data HG1(x1, y1), HG2(x2, y2), HG3(x3, y3), ..., HGn(xn, yn). These data describe the elevation of the material layer 8 applied by the grader G in the subsequent operation at a certain point in the terrain in a coordinate reference system (x, y) independent of the adhesive spreader B.

[0058] In a second exemplary embodiment, the control and / or computing device 24 is configured to read the first elevation profile dataset HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn) and the second elevation profile dataset HG1(x1, y1), HG2(x2, y2), HG3(x3, y3), ..., HGn(xn, yn) from the data storage device 25, and generate layer thickness data D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn) based on the elevation information of the first and second elevation profile data. As in the first exemplary embodiment, the metering element 20 is controlled by the control and / or computing device 24 such that the metering element applies a predetermined amount of adhesive based on the layer thickness D of the applied material layer 8.

[0059] The control and / or calculation device 24 calculates the layer thickness data for each case by calculating the difference D(x, y) = HG(x, y) – HW(x, y) between the previously determined elevation HG(x, y) of layer 8 applied to compacted ground 2 by grader G at a specific point and the previously determined elevation HW(x, y) of ground 2 in terrain compacted by roller W at a specific point.

[0060] D1(x, y) = HG1(x, y) – HW1(x, y) D2(x, y) = HG2(x, y) – HW2(x, y) D3(x, y) = HG3(x, y) – HW3(x, y) D4(x, y) = HG4(x, y) – HW4(x, y) ... Dn(x, y) = HGn(x, y) – HWn(x, y) Figure 6 The procedure for determining the elevation HG(x, y) of layer 8 applied to compacted ground 3 by grader G and the elevation HW(x, y) of ground 3 compacted by roller W using grader G and roller W is illustrated. Figure 6 The image shows a road roller W and a grader G in a highly simplified manner. The road roller W has a frame 6 supported in the working direction 2 by a front roller 4 and a rear wheel 5, and the grader has a frame 10 supported by a front wheel and a rear wheel 9 and a scraper 12 for distributing and leveling material.

[0061] The road roller W has a construction machinery position determination device 28 configured to generate construction machinery position data describing the position of a construction machinery reference point RW assigned to the road roller in a coordinate reference system (x, y). The grader G has a construction machinery position determination device 29 configured to generate construction machinery position data describing the position of a construction machinery reference point RG assigned to the grader in a coordinate reference system (x, y). The construction machinery position determination devices 28 or 29 of the road roller W or grader G have GNSS receivers 28a or 29a for receiving satellite signals from a Global Navigation Satellite System 22. The construction machinery position data describes the current position of the construction machinery. The construction machinery reference point RW (RW') assigned to the road roller W is preferably centered on the axis 4a of the front roller 4 in the working direction 2 or on the axis 5a of the rear wheel 5 of the road roller.

[0062] In addition, the roller W has an elevation position determination device 30, which is configured to generate elevation position data that describes the position of the elevation reference point RHW in a coordinate reference system at the height of the contact surface of the front roller 4 or the rear wheel 5 on the ground 3. Figure 1A and Figure 1B The elevation position determination device 30 of the road roller W has a GNSS receiver 30a for receiving satellite signals from the Global Navigation Satellite System 20.

[0063] The grader G also has an elevation positioning device 31, which is designed to generate elevation positioning data that describe the position of an elevation reference point RHG in a coordinate reference system at the height of the lower edge 12a of the movable scraper 12 used for distributing and leveling the ground. Figure 2A and Figure 2B The elevation position determination device 31 of the grader G has a GNSS receiver 31a for receiving satellite signals from a global navigation satellite system.

[0064] The construction machinery location determination device 28 or 29 for roller W or grader G and the elevation location determination device 30 or 31 can form a common device, and the construction machinery reference point RW or RG and the elevation reference point RHW or RHG can be a common reference point, so that by assigning a single location determination device with a GNSS receiver to the roller or grader, the elevation (elevation information) of the compacted ground (roller) or the applied material layer (grader) at a specific point (x, y) in the terrain can be determined from the location data, in order to determine the location of the single reference point.

[0065] The adhesive applicator B involved in the work process is a reference. Figure 4 or Figure 5 The described adhesive applicator is provided with a layer thickness dataset D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn) ( Figure 4 Alternatively, the first elevation profile dataset HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn) and the second elevation profile dataset HG1(x1, y1), HG2(x2, y2), HG3(x3, y3), ..., HGn(xn, yn) Figure 5 ).

[0066] During the advance of the roller W, the first elevation profile dataset HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn) is determined based on the elevation position data of the elevation position determination device 30 (elevation of the layer) and the construction machinery position data of the roller W's construction machinery position determination device 28 (position for measuring elevation). During the distribution and leveling of the material layer 8 applied to the compacted ground 3, the second elevation profile dataset HG1(x1, y1), HG2(x2, y2), HG3(x3, y3), ..., HGn(xn, yn) is determined based on the elevation position data of the elevation position determination device 31 and the construction machinery position data of the grader G's construction machinery position determination device 29. The first and second elevation profile datasets are then uploaded to the computer cloud 21. For this purpose, the road roller has an interface 32, and the grader G has an interface 33.

[0067] In the computer cloud 21, layer thickness datasets D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn) can be generated by calculating the difference based on the elevation information of the elevation profile data of the first and second elevation profile datasets. These datasets can be stored in the cloud storage device 21A, allowing the adhesive spreader B to subsequently download them from the computer cloud 21, as shown in the reference. Figure 4 As described. Alternatively, the first and second elevation profile data can be stored in cloud storage device 21A and downloaded from the cloud storage device by the adhesive spreader B, and the layer thickness dataset can be determined by the control and / or computing device 24 of the adhesive spreader B from the first and second elevation profile data, as described. Figure 6 As shown. Adhesive spreader B then applies a certain amount of adhesive, the amount of which depends on the thickness of layer 8 applied to the compacted ground 3.

[0068] As an alternative to storing the elevation profile dataset in the cloud, the first elevation profile dataset HW can be transferred directly from interface 32 of the roller W to interface 26 of the adhesive spreader B, thereby making it available for further processing.

[0069] Similarly, the second elevation profile dataset HG can be directly transferred from interface 33 of grader G to interface 26 of adhesive spreader B, thereby making it available for further processing.

[0070] Therefore, during the advance of the road roller W, the elevation profile of the compacted ground is continuously drawn, and during the advance of the grader G, the elevation profile of the material layer 8 applied by the grader is continuously drawn. Figures 3A to 3F Different measured amounts of adhesive 13 are shown in the regions of protrusion 3a and depression 3b. It can be seen that the amount of adhesive is reduced in the region of protrusion 3a and the amount of adhesive is reduced in the region of depression 3b.

[0071] The layer thickness dataset, containing all layer thickness data, does not need to be generated before the adhesive spreader B is started. When the adhesive spreader is started, the layer thickness data (which describes the layer thickness at the corresponding location) can also be determined sequentially from the corresponding first elevation profile data and second elevation profile data (which describe the elevation of the terrain profile at these locations) by calculating the difference.

[0072] Figure 7 An alternative workflow is illustrated, in which the elevation profile data HB1(x1, y1), HB2(x2, y2), HB3(x3, y3), ..., HBn(xn, yn) are not generated by the grader G, but by the adhesive spreader B itself. Figure 7In the diagram, the adhesive spreader B, the computer cloud 21, the satellite 22A of the satellite navigation system 22, and the road roller W are shown in a highly simplified manner. Corresponding parts are again equipped with the same reference numerals.

[0073] If you have already referred to Figure 5 As described, the metering device 19 of the adhesive spreader B has a data storage device 25 for storing a first elevation profile dataset HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn). This first elevation profile dataset includes elevation profile data, each describing the elevation of the ground 3 compacted at a point in the terrain using a road roller W in a previous operation, in a coordinate reference system. This dataset is downloaded from a computer cloud 21. Therefore, the elevations HW of the compacted ground 3 at different points in the terrain are known. However, the second elevation profile datasets HB1(x1, y1), HB2(x2, y2), HB3(x3, y3), ..., HBn(xn, yn) do not need to be downloaded from the cloud to this data storage device 25 because the elevation profile data is generated by the metering device 19 itself.

[0074] In an alternative implementation, the first elevation profile dataset HW does not need to be downloaded from cloud 21, but can be directly transmitted from roller W via its interface 32 to adhesive spreader B's interface 26.

[0075] If you have already referred to Figure 4 and Figure 5 As described, the adhesive applicator B has a construction machinery position determination device 27, which is designed to generate construction machinery position data that describes the position of a reference point RB assigned to the metering element 20 in a coordinate reference system. The construction machinery position determination device 27 has a GNSS receiver 27a for receiving satellite signals from a Global Navigation Satellite System 22. The construction machinery position data is sufficient to describe the position of the reference point RB on the terrain surface. Elevation information is not required. In this exemplary embodiment, the construction machinery reference point RB is located at the exit of the metering element 20, preferably centered on an axis 20a extending transversely to the direction of travel of the adhesive applicator, along which the adhesive is applied through the metering element.

[0076] Furthermore, in this exemplary embodiment, the adhesive applicator B has an elevation position determination device 34, which is configured to generate elevation position data that describes the position of an elevation reference point RHB at the height of the contact surface of the front wheel 14 or the rear wheel 15 on the ground in a coordinate reference system. Figure 3AThe elevation positioning device of the adhesive spreader B has a GNSS receiver 34a for receiving satellite signals from the Global Navigation Satellite System 22.

[0077] The control and / or calculation device 24 of the adhesive spreader B generates second elevation profile data HB1(x1, y1), HB2(x2, y2), HB3(x3, y3), ..., HBn(xn, yn) based on the elevation position data of the elevation position determination device 34 and the construction machinery position data of the construction machinery position determination device 27.

[0078] During the advance of the adhesive applicator B, the second elevation profile data is determined based on the elevation position data (layer elevation) of the elevation position determination device 34 and the construction machinery position data (position for measuring elevation) of the construction machinery position determination device 27 of the adhesive applicator B. As described with reference to the foregoing figures, the layer thickness data D1(x1,y1), D2(x2,y2), D3(x3,y3), ..., Dn(xn,yn) can be generated sequentially by the control and calculation device 24 based on the elevation information of the previously determined first and second elevation profile data. During the advance of the adhesive applicator, the control and / or calculation device 24 actuates the metering element 20, causing the metering element to apply a predetermined amount of adhesive according to the layer thickness D of the applied material layer 8.

[0079] Figure 8 A simplified schematic diagram of a regenerator or stabilizer is shown. The construction machinery has a frame 35 supported by a chassis 36. The chassis 36 has front wheels 37 and rear wheels 38, which are fastened to a front lifting column 39 and a rear lifting column 40. The front lifting column 39 and the rear lifting column 40 are further attached to the frame 35, allowing the frame to be height-adjusted relative to the ground. A rotor housing 41 is disposed between the front wheels 37 and the rear wheels 38, and a milling / mixing rotor 42, shown only in outline, is arranged within the rotor housing. This milling / mixing rotor can be designed to be adjustable in milling depth relative to the rotor housing and thus relative to the frame. The stabilizer or regenerator has a storage container 43 for a powdered binder (e.g., lime or cement), a transport device 44 (e.g., a conveyor belt) for applying the binder, and a metering device 45 (e.g., a rotary valve). The binder is introduced into the ground immediately after milling using the milling / mixing rotor 42.

Claims

1. A ground stabilizing adhesive application device, comprising: Adhesive container (18) for containing adhesive (13); And a metering device (19) having a metering element (20), the metering device including a control and / or computing device (24) designed to cause the metering element (20) to apply a predetermined amount of adhesive (13). Its features are, The metering device (19) has a data storage device (25) for storing a layer thickness dataset (D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn)), the layer thickness dataset including layer thickness data, each layer thickness data describing the layer thickness of a material layer applied to the compacted surface at a point in the terrain, in a coordinate reference system independent of the adhesive application device, and... The control and / or computing device (24) is configured to read the layer thickness data of the layer thickness dataset (D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn)) from the data storage device (25), and to control the metering element (20) of the metering device (19) during the advance of the adhesive application device, so that a predetermined amount of adhesive is applied using the metering element according to the layer thickness of the applied material layer (8).

2. The adhesive application device for ground stabilization according to claim 1, characterized in that, The adhesive application device includes a construction machinery position determination device (27) configured to generate construction machinery position data describing the position of a construction machinery reference point (RB) associated with the adhesive application device in a coordinate reference system independent of the adhesive application device. The control and / or computing device (24) is configured to continuously determine the layer thickness of the applied material layer (8) based on the layer thickness data and the construction machinery position data, and to actuate the metering element (20) of the metering device (19) during the advance of the adhesive application device to apply an amount of adhesive related to the layer thickness using the metering element.

3. The adhesive application device for ground stabilization according to claim 1 or 2, characterized in that, The metering device (19) includes an interface (26) for receiving the layer thickness dataset, specifically a cloud interface for reading the layer thickness dataset from a data storage device (21A) of the computer cloud (21).

4. A ground stabilizing adhesive application device, comprising: An adhesive container (18) for containing adhesive (13); and a metering device (19) having a metering element (20), the metering device (19) including a control and / or computing device (24) configured to cause the metering element (20) to apply a predetermined amount of adhesive (13). Its features are, The metering device (19) includes a data storage device (25) for storing: The first elevation profile dataset (HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn)) includes first elevation profile data, each describing the elevation of the ground compacted in a previous operation at a point in the terrain using a ground compaction device (W) in a coordinate reference system independent of the adhesive application device, and... The second elevation profile dataset (HG1(x1, y1), HG2(x2, y2), HG3(x3, y3), ..., HGn(xn, yn)) includes second elevation profile data, which respectively describe the elevation of a material layer (8) applied to the compacted ground (2) by the material application device (G) in an operation following a previous operation at a point in the terrain, in a coordinate reference system independent of the adhesive application device. The control and / or computing device (24) is configured to read the first elevation profile dataset and the second elevation profile dataset from the data storage device (25), and generate layer thickness data (D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn)) based on the elevation information of the first elevation profile data and the second elevation profile data. These data describe the layer thickness of the material layer (8) applied to the compacted surface at a point on the terrain in a coordinate reference system independent of the adhesive application device. The control and / or computing device (24) is configured to control the metering element (20) of the metering device (19) during the advance of the adhesive application device, such that a predetermined amount of adhesive (13) is dispensed using the metering element (20) according to the layer thickness of the applied material layer (8).

5. The adhesive application device according to claim 4, characterized in that, The control and / or computing device (24) is configured to generate layer thickness data based on the calculation of the difference between the elevation of the material layer (8) applied to the compacted ground (3) and the elevation of the compacted ground (3) in the terrain.

6. The adhesive application device for ground stabilization according to claim 4 or 5, characterized in that, The adhesive application device includes a construction machinery position determination device (27) configured to generate construction machinery position data describing the position of a construction machinery reference point (RB) associated with the adhesive application device in a coordinate reference system independent of the adhesive application device. The control and / or computing device (24) is configured to continuously determine the layer thickness of the applied layer based on the layer thickness data and the construction machinery position data, and to actuate the metering element (20) of the metering device (19) during the advance of the adhesive application device to apply an amount of adhesive (13) corresponding to the layer thickness using the metering element (20).

7. The adhesive application device according to any one of claims 4 to 6, characterized in that, The metering device (19) includes an interface (26) for receiving the first elevation profile dataset and the second elevation profile dataset, specifically a cloud interface for reading the first elevation profile dataset and the second elevation profile dataset from a data storage device in a computer cloud.

8. A ground stabilizing adhesive application device, comprising: Adhesive container (18) for containing adhesive; And a metering device (19) having a metering element (20), the metering device (19) including a control and / or computing device (24) configured to cause the metering element (20) to apply a predetermined amount of adhesive (13). Its features are, The metering device (19) has an elevation location determination device (34) configured to generate elevation location data describing the position of an elevation reference point (HRB) associated with the adhesive application device in a coordinate reference system independent of the adhesive application device. The metering device (19) has a data storage device (25) for storing a first elevation profile dataset (HW1(x1,y1), HW2(x2,y2), HW3(x3,y3), ..., HWn(xn,yn)), the first elevation profile dataset including first elevation profile data, each describing the elevation of the ground compacted in a previous operation at a point in the terrain using a ground compaction device (W) in a coordinate reference system independent of the adhesive application device. The control and / or computing device (24) is configured to generate second elevation profile data (HB1(x1, y1), HB2(x2, y2), HB3(x3, y3), ..., HBn(xn, yn)) based on the elevation position data of the device (34), which respectively describe the elevation of the material layer (8) applied to the compacted ground (3) using the material application device in an operation following a previous operation, at a point in the terrain, in a coordinate reference system independent of the adhesive application device, and The control and / or computing device (24) is configured to read the first elevation profile dataset (HW1(x1, y1), HW2(x2, y2), HW3(x3, y3), ..., HWn(xn, yn)) from the data storage device (25), and generate layer thickness data (D1(x1, y1), D2(x2, y2), D3(x3, y3), ..., Dn(xn, yn)) based on the elevation information of the first elevation profile data and the second elevation profile data. These data describe the layer thickness of the material layer (8) applied to the compacted ground (3) at a point on the terrain in a coordinate reference system independent of the adhesive application device. The control and / or computing device (24) is configured such that the metering element (20) of the metering device (19) is actuated such that a predetermined amount of adhesive is applied using the metering element (20) according to the layer thickness of the applied material layer (8) as the adhesive application device moves forward.

9. The adhesive application device according to claim 8, characterized in that, The control and / or computing device (24) is configured to generate layer thickness data based on the calculation of the difference between the elevation of the material layer (8) applied to the compacted ground (3) and the elevation of the compacted ground (3) in the terrain.

10. The adhesive application device according to claim 8 or 9, characterized in that, The adhesive application device includes a construction machinery positioning device (27) configured to generate construction machinery position data describing the position of a construction machinery reference point (RB) associated with the adhesive application device in a coordinate reference system independent of the adhesive application device. The control and / or computing device (24) is configured to continuously determine the layer thickness of the applied layer (8) based on the layer thickness data and the construction machinery position data, and to actuate the metering element (20) of the metering device (19) during the advance of the adhesive application device to apply an amount of adhesive (13) corresponding to the layer thickness using the metering element (20).

11. The adhesive application device according to any one of claims 8 to 10, characterized in that, The metering device (19) includes an interface (26) for receiving the first elevation profile dataset, specifically a cloud interface for reading the first elevation profile dataset from a data storage device in a computer cloud.

12. The adhesive application device according to claim 2, 6 or 8, characterized in that, The construction machinery location determination device (27) and / or the elevation location determination device (34) have at least one GNSS receiver (27a, 34a) for receiving satellite signals from the Global Satellite System (22).

13. A method for applying adhesive to an uncompacted material layer using an adhesive application device, wherein the uncompacted material layer has been applied to a compacted surface using a self-propelled material application device in an operation prior to the application of the adhesive, and the surface has been compacted using a self-propelled ground compaction device in an operation prior to the application of the uncompacted material layer, wherein... A surveying system is provided, which is designed to: In the coordinate system, The location of the reference points associated with the ground compaction equipment, and The location of the reference point associated with the material application device or the adhesive application device can be determined. Its features are, During ground compaction using the aforementioned ground compaction equipment, the surveying system is used to determine the elevation positions of reference points associated with the ground compaction equipment, and The mapping system is used to determine the elevation positions of reference points associated with the material application device during the application of material using the material application device, or the elevation positions of reference points associated with the adhesive application device during the application of adhesive using the adhesive application device. The thickness of the applied material layer is determined based on the difference in elevation between a reference point associated with the material application equipment and a reference point associated with the ground compaction equipment, or based on the difference in elevation between a reference point associated with the adhesive application equipment and a reference point associated with the ground compaction equipment, wherein... During the advance of the adhesive application device, a predetermined amount of adhesive is applied to the uncompacted material layer using a metering device provided on the adhesive application device, based on the determined layer thickness of the applied material layer.

14. The method according to claim 13, characterized in that, The adhesive application device is an adhesive spreader with a frame supported by wheels, or a ground stabilizer or regenerator with a frame supported by wheels, and the reference point associated with the adhesive application device is located at the height of the contact surface of the wheel.

15. The method according to claim 13, characterized in that, The ground compaction equipment is a roller unit having a frame supported by wheels and a roller, and the reference point associated with the ground compaction equipment is located at the height of the contact surface of the wheel or the roller.

16. The method according to claim 13, characterized in that, The material application device is a grader with a frame supported by wheels, on which a scraper for distributing and leveling material is provided, and a reference point associated with the material application device is located at the height of the lower edge of the scraper.

Images