Soil compaction system for compacting asphalt material and method for compacting asphalt material

Abstract

To provide a soil compaction system and method that facilitates accurate compaction work for soil compactor operators. [Solution] A soil compaction system for compacting asphalt material includes at least one soil compactor (10) to move over asphalt material (16) to be compacted, and at least one display unit (36) having a display display (38) for displaying compaction work information related to the soil compaction process to be carried out, wherein the at least one display unit (36) is configured to display on the display display (38) at least one inversion limit (50, 52) related to the movement of the at least one soil compactor (10) over the asphalt material (16) to be compacted, and the at least one inversion limit (50, 52) indicates a limit on the movement of the at least one soil compactor (10) in the direction of movement (B1, B2).

Description

Technical Field

[0001] The present invention relates to a soil compaction system capable of compacting asphalt materials, for example, in road construction.

Background Art

[0002] From Patent Document 1, information indicating how close or far a soil compactor should approach or move away from an asphalt finisher at most is displayed on a display of the asphalt finisher for an operator of the soil compactor that compacts the asphalt material spread behind the asphalt finisher. The information is generated based on the temperature of the spread asphalt material recorded in the asphalt finisher. In an alternative configuration, a line indicating the area where the soil compactor should move on the spread asphalt material is projected onto the asphalt material. These lines are also determined in consideration of the temperature of the spread asphalt material detected by the asphalt finisher.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a soil compaction system for compacting asphalt materials and a method for compacting asphalt materials using the soil compaction system, which facilitate the accurate execution of the compaction work for an operator of the soil compactor.

Means for Solving the Problems

[0005] According to the present invention, this problem is solved by a soil compaction system for compacting asphalt material, and the soil compaction system is - At least one soil compactor to move over the asphalt material to be compacted, -Includes at least one display unit equipped with a display screen for displaying compaction work information related to the soil compaction process to be carried out, At least one display unit is configured to display on a display screen at least one inversion limit relating to the movement of at least one soil compactor over the asphalt material to be compacted, the at least one inversion limit indicating a limit with respect to the movement of at least one soil compactor in one direction of movement.

[0006] By displaying at least one such inversion boundary, the operator of the soil compactor is directly shown how far they can move the soil compactor before a reversal of direction of movement is necessary, without having to observe the asphalt material to be compacted or / or the asphalt paver ahead. Therefore, the operator does not need to estimate the position of the soil compactor relative to, for example, the surroundings or the asphalt paver spreading the asphalt material, and as a result, a cause of error during compaction work can be eliminated.

[0007] During the compaction of asphalt material, soil compactors generally move back and forth in generally opposite directions of movement, so it is particularly advantageous if at least one display unit is configured to display the reversal limit for each of the two generally opposite directions of movement of at least one soil compactor, relative to the movement of at least one soil compactor.

[0008] To ensure that measures are taken in a timely manner to slow down the speed of at least one soil compactor and reverse its direction of movement before it reaches the reversal limit, at least one display unit may be configured to display the distance between at least one soil compactor and the reversal limit, preferably associated with each reversal limit.

[0009] Since the temperature of the asphalt material is a key influencing parameter regarding whether the asphalt material is already compacted or can still be compacted, it is advantageous for an operator operating at least one soil compactor if at least one display unit is configured to display the temperature of the asphalt material in the inversion limit region, preferably associated with at least one inversion limit. This allows the operator to evaluate whether a predetermined or displayed inversion limit is reasonable, taking into account any further information displayed to the operator.

[0010] To enable operators to easily estimate the current position of the soil compactor they are operating, it is proposed that at least one display unit be configured to display the lane the soil compactor should and / or has traveled through, in association with at least one soil compactor.

[0011] An information processing unit may be provided that generates compaction work information based on asphalt temperature information, which represents the temperature of the asphalt material to be compacted, for the purpose of data processing or generating data that forms the basis of information to be displayed.

[0012] To accurately compact asphalt material, it is particularly advantageous if the information processing unit is configured to generate compaction operation information based on at least one temperature influence parameter that affects the temperature of the asphalt material to be compacted.

[0013] At least one temperature-affected parameter is, for example, - Ambient temperature, or / and -Atmospheric humidity, or / and -wind speed, or / and -Ground temperature, or / and - Precipitation amount or / and type of precipitation, It may include.

[0014] Furthermore, since the asphalt material to be compacted is an important influencing parameter for the compaction work to be carried out, it is further proposed that the information processing unit be configured to generate compaction work information based on at least one material parameter of the asphalt material to be compacted.

[0015] For example, at least one material parameter is: - Thickness of the asphalt material before compaction, or / and - The thickness of the compacted asphalt material, or / and - Compaction state of asphalt material, It may include.

[0016] Furthermore, the structure of the soil compactor used for compaction also significantly influences the characteristics of the earthworks that have been or should be performed. For this reason, it is further proposed that the information processing unit be configured to generate compaction work information based on at least one compactor parameter that characterizes at least one soil compactor.

[0017] For example, at least one compactor parameter is: - The mass of at least one soil compactor, or / and -The extended length in the direction of the roller rotation axis of at least one compaction roller of at least one soil compactor, or / and - Compaction capacity of at least one soil compactor, It may include.

[0018] To spread the asphalt material to be compacted by at least one soil compactor, the soil compaction system according to the present invention may include at least one asphalt finisher.

[0019] To generate information representing the temperature of the asphalt material, which is a particularly important parameter for the compaction operation, the at least one asphalt finisher may be provided with a temperature detection device for providing asphalt temperature information representing the temperature of the asphalt material spread by the at least one asphalt finisher.

[0020] The present invention further relates to a method for compacting an asphalt material using a soil compaction system having the structure according to the present invention. In this method, at least one inversion limit representing the limit of movement in the moving direction of at least one soil compactor is displayed on the display of at least one display unit.

[0021] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The drawings show the following.

Brief Description of the Drawings

[0022] [Figure 1] It is a side view of a soil compactor. [Figure 2] It is a schematic diagram of a soil compaction system including an asphalt finisher and a soil compactor. [Figure 3] It is a diagram showing the display of a display unit on which compaction operation information is displayed.

Embodiments for Carrying Out the Invention

[0023] Figure 1 shows a side view of a soil compactor 10 used to compact soil materials, particularly asphalt materials. The soil compactor 10 includes a rear vehicle section 12, which is equipped with drive wheels 14 that can be driven by a drive unit to rotate in order to move the soil compactor 10 over the asphalt material 16 to be compacted. The rear vehicle section 12 is further equipped with a cab 18 for an operator 20 to operate the soil compactor 10.

[0024] The front section 22 of the vehicle is connected to the rear section 12 of the vehicle so as to be able to pivot around a steering axis in order to operate the soil compactor 10. The front section 22 of the vehicle is provided with compaction rollers 24 that are rotatable around a roller rotation axis perpendicular to the projection plane of Figure 1.

[0025] The soil compactor 10 may have, for example, two compaction rollers, and may be configured as, for example, a pivot steering type compactor. One or more compaction rollers of the soil compactor 10 may be equipped with a vibration generating device, and the vibration generating device will bring vibration motion, that is, vibration motion substantially perpendicular to the roller rotation axis, to the compaction roller, or reciprocating motion around the roller rotation axis in order to perform oscillating motion.

[0026] Figure 2 illustrates the principle of the soil compaction system 26, which includes, in addition to the soil compactor 10, an asphalt paver 28 for spreading the asphalt material 16 to be compacted by the soil compactor 10. For example, the asphalt paver 28 equipped with a tracked vehicle 30 includes a paver screed 32 located in the area behind the asphalt paver 28 with respect to the direction of movement B1 when spreading the asphalt material 16, and the paver screed 32 spreads the asphalt material 16 on the prepared ground 34.

[0027] In compaction work, the soil compactor 10 generally moves back and forth in the direction of movement B1 of the asphalt finisher 28 and in the opposite direction of movement B2, passing the asphalt material to be compacted through, for example, a predetermined number of passing lanes according to the compaction plan, multiple times as needed.

[0028] To enable the operator 20 to move the soil compactor 10 as prescribed over the asphalt material 16 to be compacted, the soil compaction system 26 includes a display unit 36 ​​equipped with a display screen 38, as shown in principle in Figure 3. The display unit 36 ​​may include, for example, a smartphone or tablet, and may be configured to be primarily mobile, and can be carried by the operator 20 or fixedly installed in the driver's cab 18.

[0029] The display unit 36 ​​displays compaction work information on the display display 38, which instructs the operator 20, in particular in relation to the asphalt finisher 28, on the location of the soil compactor 10 and how to move the soil compactor 10 on the leveled asphalt material 16.

[0030] As is particularly clear from Figure 3, the compaction work information includes a passage lane 40, and along the passage lane 40, the soil compactor 10 is to move in the same direction B1 or the opposite direction B2 behind the asphalt finisher 28 which is moving in the direction B1, for example, according to a predetermined compaction plan.

[0031] The positions of the asphalt paver 28 and soil compactor 10 can be detected, for example, by a satellite-based position detection system 42, or, if necessary, a ground-based position detection system 42. This information can be processed, for example, by an information processing unit 44 installed on the asphalt paver 28 or a stationary information processing unit 44, and displayed on a display screen 38 by a display unit 36. In addition, compaction plan data that forms the basis of the path of the passing lanes is also processed by the information processing unit 44 so that the passing lanes 40 can be displayed on the display screen 38.

[0032] The asphalt paver 28 is equipped with a temperature detection device, collectively referred to as reference numeral 46. The temperature detection device 46 may include a plurality of temperature sensors 48 provided on the asphalt paver 28, particularly on the paver screed 32. The temperature sensors 48 generate asphalt temperature information representing the temperature of the asphalt material 16 being laid by the paver screed 32 over almost the entire width of the paver screed 32, and transmit this information to the information processing unit 44.

[0033] The temperature of the leveled asphalt material 16 is an important parameter regarding whether the asphalt material 16 has already been compacted by the soil compactor 10, or whether it can or should still be compacted. If the temperature of the asphalt is too high or too low, the asphalt material 16 cannot be compacted to the desired quality. Therefore, it is important that the soil compactor 10 moves behind the asphalt finisher 28 only within a range where it is ensured that the gradually cooling asphalt material 16 has a temperature suitable for carrying out the compaction process.

[0034] Taking asphalt temperature information into consideration, the information processing unit generates reversal limits 50 and 52 in relation to the spatial position of the soil compactor 10. The reversal boundaries 50 and 52 are displayed on the display 38 in relation to the soil compactor 10, indicating how far the soil compactor 10 can or should move toward the asphalt paver in the direction of movement B1, or how far away it can or should move toward the asphalt paver 28 in the direction of movement B2. For example, in relation to these reversal boundaries 50 and 52, the display can also show how far each reversal boundary 50 or 52 is still from the soil compactor 10 at that time, allowing the operator 20 to introduce a braking process in a timely manner. Thus, upon reaching each reversal boundary 50 or 52, or immediately before, the direction of movement of the soil compactor 10 can be reversed, and if necessary, the soil compactor 10 can be moved toward the next lane 40 to be passed, according to a predetermined compaction plan. Furthermore, in relation to each inversion boundary 50, 52, the temperature of the asphalt material at each inversion boundary 50, 52 can be displayed. For example, the average temperature over the width of the asphalt finisher 28, or the temperature measured by the temperature sensor 48 located closest to the currently traveling lane 40, may be displayed.

[0035] Figure 3 further shows that at the inversion boundary 50, which is closer to the asphalt finisher 28, the temperature of the asphalt material 16 is in the range of approximately 140°C, whereas at the inversion boundary further away from the asphalt finisher 28, the asphalt material has already cooled to 80°C. The temperature detection device 46 detects the temperature of the asphalt material 16 immediately behind the asphalt finisher 28, that is, at a clearly spatially distant location from the inversion boundaries 50 and 52. Using the information processing unit 44, it is possible to calculate, for example, the temperature of the asphalt material 16 as its distance from the asphalt finisher 28 increases, based on a model representing the cooling behavior of the asphalt material 16. In this calculation, various temperature influence parameters that affect the cooling behavior of the asphalt material may be considered, such as ambient temperature, atmospheric humidity, wind speed, ground temperature 34, or precipitation amount or type of precipitation (i.e., rain or snow). In this way, it becomes possible to determine the temperature of a location that has been passed by the asphalt finisher 28 a short time ago with relatively accurate accuracy.

[0036] Furthermore, the material parameters of the leveled asphalt material 16 itself also affect the cooling behavior of the asphalt material 16 and may be taken into consideration when determining the inversion boundary. For example, the thickness of the asphalt material that has not yet been compacted, the thickness of the asphalt material that has already been compacted, or the compaction state of the asphalt material may be taken into consideration. The thickness of the compacted asphalt material and its compaction state can be determined by known methods from operating variables that characterize the compaction state of the soil compactor 10, such as the vertical and horizontal acceleration of the compaction rollers and the moving speed of the soil compactor 10.

[0037] Parameters characterizing the soil compactor 10 itself further influence whether the asphalt material 16 to be compacted by the soil compactor 10 should have a maximum or minimum temperature. For example, its mass, contact length, i.e., the extension length of one or more compaction rollers of the soil compactor 10 in the direction of each roller rotation axis, and its compaction capacity may be considered. The compaction capacity may be determined, for example, based on whether the soil compactor 10 has vibration generating devices disposed on one or more compaction rollers, i.e., whether compaction is possible by vibration and / or oscillating motion.

[0038] Figure 3 shows that the display 38 may display further information 54, 56, which is shown only in principle. This information 54, 56 may include environmental parameters such as ambient temperature and atmospheric humidity, but may also include the movement speed of the soil compactor 10 and its current operating mode, i.e., whether compaction is performed by vibration, oscillation, or static operation. It can also display which of the passing lanes 40 displayed on the display 38 should be changed to after the next change of direction, or whether a change should be made at all. Furthermore, it is possible to display variables that characterize the compaction state of the asphalt material, such as the density of the asphalt material. [Explanation of Symbols]

[0039] 10 Soil Compactor 12 Rear of the vehicle 14 drive wheels 16 Asphalt materials 18 Driver's cab 20 Operator 22 Front of the vehicle 24 Compaction roller 26. Soil Compaction Systems 28 Asphalt finisher 30 Tracked running gear 32 Finisher Screed 34 Ground 36 Display Units 38 Display 40 passing lanes 42. Position detection system 44 Information Processing Unit 46 Temperature detection device 48 Temperature Sensor 50, 52 Inversion limit, inversion boundary 54, 56 Information B1, B2 movement direction

Claims

1. A soil compaction system for compacting asphalt material, - At least one soil compactor (10) to move over the asphalt material (16) to be compacted, - At least one display unit (36) equipped with a display display (38) for displaying compaction work information related to the soil compaction process to be carried out, Includes, At least one of the display units (36) is configured to display on the display screen (38) at least one inversion limit (50, 52) related to the movement of at least one of the soil compactors (10) over the asphalt material (16) to be compacted, the at least one inversion limit (50, 52) being related to the direction of movement (B) of at least one of the soil compactors (10) １ , B ２ A soil compaction system that demonstrates the limits of movement in ).

2. At least one of the display units (36) indicates the movement of at least one of the soil compactors (10) in two generally opposing directions of movement (B １ , B ２ The soil compaction system according to claim 1, characterized in that it is configured to display the inversion limits (50, 52) for each of the )

3. The soil compaction system according to claim 1 or 2, characterized in that at least one of the display units (36) is configured to display the distance between at least one of the soil compactors (10) and the inversion limits (50, 52), preferably in association with each of the inversion limits (50, 52).

4. The soil compaction system according to any one of claims 1 to 3, characterized in that at least one display unit (36) is configured to display the temperature of the asphalt material (16) in the region of at least one inversion limit (50, 52), preferably associated with each of the inversion limits (50, 52).

5. The soil compaction system according to any one of claims 1 to 4, characterized in that at least one of the display units (36) is configured to indicate, in association with at least one of the soil compactors (10), the path lanes (40) that the soil compactor (10) should and / or have passed through.

6. The soil compaction system according to any one of claims 1 to 5, characterized in that it is provided with an information processing unit (44) for generating compaction work information based on asphalt temperature information representing the temperature of the asphalt material (16) to be compacted.

7. The soil compaction system according to claim 6, characterized in that the information processing unit (44) is configured to generate compaction work information based on at least one temperature influence parameter that affects the temperature of the asphalt material (16) to be compacted.

8. At least one of the temperature-affected parameters is - Ambient temperature, or / or - Atmospheric humidity, or / and - Wind speed, or / and - Ground temperature, or / and - Precipitation amount or / and type of precipitation, The soil compaction system according to claim 7, characterized by including the following:

9. The soil compaction system according to any one of claims 6 to 8, characterized in that the information processing unit (44) is configured to generate compaction work information based on at least one material parameter of the asphalt material (16) to be compacted.

10. At least one of the material parameters is, - The thickness of the asphalt material before compaction, or / and - The thickness of the compacted asphalt material, or / and - Compaction state of the asphalt material, The soil compaction system according to claim 9, characterized by including the following:

11. The soil compaction system according to any one of claims 6 to 10, characterized in that the information processing unit (44) is configured to generate compaction work information based on at least one compactor parameter that characterizes at least one soil compactor (10).

12. At least one of the compactor parameters is - The mass of at least one of the soil compactors (10), or / and - The extended length in the direction of the roller rotation axis of at least one compaction roller (24) of at least one soil compactor (10), or / and - Compaction capacity of at least one of the soil compactors (10), The soil compaction system according to claim 11, characterized by including the following:

13. A soil compaction system according to any one of claims 1 to 12, characterized in that at least one asphalt finisher (28) is provided for spreading the asphalt material (16) to be compacted by at least one soil compactor (10).

14. The soil compaction system according to claim 13, characterized in that at least one of the asphalt finishers (28) is provided with a temperature detection device (46) for providing asphalt temperature information representing the temperature of the asphalt material (16) being spread by at least one of the asphalt finishers (28).

15. A method for compacting asphalt material using a soil compaction system (26) according to any one of claims 1 to 14, wherein the direction of movement (B) of at least one soil compactor (10) is displayed on a display display (38) of at least one display unit (36). １ , B ２ A method for displaying at least one inversion limit (50, 52) that represents the limit on movement in ).

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