Ground compactor

Abstract

A ground compactor comprising at least one compactor roller (18, 20) rotatably carried on a compactor frame (12) and at least one ground probing radar-density measuring device (34) arranged within an interior volume region (VI) of the compactor frame (12).

Description

Technical Field

[0001] This utility model relates to a ground compactor, which can be used to compact ground materials (such as asphalt). Background Technology

[0002] A ground compactor designed as a so-called roller unit is known from WO 2021 / 229146 A1, wherein the compactor frame includes a main frame on which a drive unit is mounted, an operating platform, and drive wheels driven by the drive unit. A sub-frame is pivotally connected to the main frame about a substantially vertically oriented pivot axis. A compactor roller is carried on the sub-frame so that the compactor roller can rotate about a roller rotation axis extending substantially in the transverse direction of the ground compactor and substantially orthogonal to the longitudinal direction of the ground compactor. A ground detection radar-humidity measuring device is carried vertically downward on the underside of the main frame, such that the antenna of the ground detection radar-humidity measuring device is positioned close to the ground where the humidity content to be measured is located. Utility Model Content

[0003] The purpose of this invention is to provide a ground compaction machine that has a ground detection radar-density measurement device that is protected from external influences.

[0004] According to the present invention, this objective is achieved by a ground compactor comprising: at least one compactor roller rotatably supported on a compactor frame; and at least one ground detection radar-density measuring device arranged in the internal volume region of the compactor frame.

[0005] By arranging at least one ground-detection radar-density measuring device within the internal volume region of the compactor frame—that is, without protruding outwards from the compactor frame—such a ground-detection radar-density measuring device is supported on the ground compactor in a manner substantially immune to external physical influences. Since obstacles that could collide with the ground compactor are frequently present in the area where it operates, damage to the ground-detection radar-density measuring device mounted in this manner due to collisions with the ground compactor can be avoided. Even during cleaning operations (e.g., using a high-pressure cleaner), the ground-detection radar-density measuring device mounted on the ground compactor will not be damaged.

[0006] The compactor frame may include a main frame and at least one sub-frame pivotally connected to the main frame about a steering axis, wherein a drive device for driving the ground compactor is provided on the main frame, and the compactor rollers are rotatably supported on at least one sub-frame.

[0007] This type of ground compactor can be designed as a so-called two-drum roller (Tandemwalze), which has compactor rollers rotatably supported on a main frame and compactor rollers rotatably supported on a sub-frame; this type of ground compactor can be designed as a so-called Walzenzug, where the compactor rollers are rotatably supported on the sub-frame and the drive wheel is supported on the main frame; or, this type of ground compactor can be designed as a so-called swing-frame ground compactor, wherein two sub-frames designed as articulated supports are pivotally connected to the main frame, and the compactor rollers are rotatably supported on each sub-frame.

[0008] Furthermore, in such ground compactors, regardless of their construction, one or more compactor rollers can be constructed on the main frame and / or at least one sub-frame as compactor rollers continuously or separately formed along the direction of the roller rotation axis, and their roller housings are typically made of steel. Alternatively or additionally, in such ground compactors, one or more compactor rollers can each be designed to be equipped with multiple rubber-wheeled rollers, which are sequentially arranged in the direction of the roller rotation axis.

[0009] For a pivotable connection, at least one subframe may include a crossbeam extending in the transverse direction of the ground compactor, wherein the subframe is pivotally connected to the main frame in the region of the crossbeam.

[0010] At least one ground-based detection radar-density measuring device can be arranged within the internal volumetric region of the subframe of the crossbeam. For this purpose, the crossbeam can be formed as a hollow beam or a hollow profile beam to provide the internal volumetric region of the subframe.

[0011] Specifically, when the ground compactor is designed as a two-drum roller or roller unit, at least one sub-frame may include another crossbeam spaced apart from the crossbeam along the longitudinal direction of the ground compactor and extending substantially along the transverse direction of the ground compactor. This other crossbeam is connected to the crossbeam by two longitudinal beams spaced apart from each other along the transverse direction of the ground compactor and extending substantially along the longitudinal direction of the ground compactor, wherein the compactor rollers are rotatably supported on the longitudinal beams. At least one ground detection radar-density measuring device may be arranged in the internal volume area of ​​the sub-frame of the other crossbeam and / or in the internal volume area of ​​the sub-frame of at least one longitudinal beam.

[0012] To this end, it may also be stipulated that another crossbeam and / or at least one longitudinal beam be formed as a hollow beam or hollow profile beam to provide internal volume areas for the subframe.

[0013] If the ground compactor includes two sub-frames designed as articulated supports, which are pivotally connected to the main frame about their respective steering axes, then at least one ground detection radar-density measuring device can be arranged in the internal volume region of at least one of the articulated sub-frames.

[0014] In another design type of the ground compactor according to the present invention, the main frame may have an internal volume area containing a drive unit and at least one ground detection radar-density measuring device.

[0015] For maintenance of the drive unit or related devices carried by the main frame, at least one preferably closable inspection port can be provided in the main frame. Here, at least one ground-penetrating radar-density measuring device can be positioned such that it can be accessed via at least one inspection port; preferably, each ground-penetrating radar-density measuring device arranged within the internal volume area of ​​the main frame can be accessed via at least one inspection port. This means that ground-penetrating radar-density measuring devices positioned in this way can be repaired through the inspection port, and can be replaced if necessary.

[0016] To ensure that one or more ground detection radar-density measuring devices are mounted on the compactor frame of the ground compactor in a way that prevents vibration, it is recommended that at least one (preferably each) ground detection radar-density measuring device includes: a sensor bracket supported on the compactor frame by at least one elastically deformable suspension element; and at least one ground detection radar-density sensor supported on the sensor bracket.

[0017] For stable installation on the compactor frame, at least one (preferably each) ground detection radar-density measuring device can be supported on the plate-like bearing area of ​​the compactor frame.

[0018] By providing a measuring port on the compactor frame associated with at least one (preferably each) ground detection radar-density measuring device, the ground located below or in the area of ​​the ground compactor can be detected by the ground detection radar-density measuring device arranged in the internal volume area of ​​the ground compactor.

[0019] In order to comprehensively detect the compaction state of the ground to be compacted by the ground compactor, it is recommended to install at least one ground detection radar-density measuring device associated with at least one (preferably each) compactor roller on each side of the compactor roller along the longitudinal direction of the ground compactor, and / or to arrange at least two ground detection radar-density measuring devices at a certain distance from each other along the transverse direction of the ground compactor. Brief description of the attached diagram

[0020] The present invention will now be described in detail with reference to the accompanying drawings. The drawings show:

[0021] Figure 1 A schematic top view of a ground compactor designed as a two-drum roller is shown;

[0022] Figure 2 A schematic diagram of a ground detection radar-density measurement device arranged in the internal volume area of ​​a ground compactor is shown;

[0023] Figure 3 A side view of a ground compactor designed as a road roller unit is shown;

[0024] Figure 4 A side view of a small compactor designed as a two-drum roller is shown;

[0025] Figure 5 A schematic side view of a swing-support type ground compactor is shown. Detailed Implementation

[0026] Figure 1 The ground compactor 10 shown includes a compactor frame, generally designated 12, which has a main frame 14 and a secondary frame 16, the secondary frame 16 surrounding a main frame 14 and a secondary frame 16. Figure 1 The turning axis A, substantially orthogonal to the drawing plane, is pivotally connected to the main frame 14. The compactor roller 18 is rotatably supported on the main frame 14 about its rotation axis, which extends along the transverse direction Q of the ground compactor and is substantially orthogonal to the longitudinal direction L of the ground compactor. The compactor roller 20 is rotatably supported on the sub-frame 16 about its roller axis, which extends substantially along the transverse direction Q of the ground compactor or orthogonal to the longitudinal direction L of the ground compactor.

[0027] The drive unit 22 is designed as, for example, an internal combustion engine or an electric motor, which is supported on the main frame 14 and provides driving energy for operating the ground compactor 10. In addition, an operating platform 24 for the operator to operate the ground compactor 10 is provided on the main frame 14.

[0028] The sub-frame 16 includes a crossbeam 26 extending substantially in the transverse direction Q of the ground compactor, via which the sub-frame 16 is pivotally connected to the main frame 14. Another crossbeam 28 is arranged to extend substantially parallel to and spaced from the crossbeam 26 in the longitudinal direction L of the ground compactor, and is connected to the crossbeam 26 via two longitudinal beams 30, 32, which are also arranged substantially in the longitudinal direction L of the ground compactor and spaced apart from each other in the transverse direction Q, such that the sub-frame 16 substantially completely surrounds the compactor roller 20, which is rotatably supported on its longitudinal beams 30, 32. At least one of the two crossbeams 26, 28 and / or at least one of the longitudinal beams 30, 32 is formed as a hollow beam, thereby providing an internal volumetric region N within the sub-frame. VI At least one ground-based radar-density measuring device 34 is arranged therein. Using such a ground-based radar-density measuring device 34, information representing the compaction state or density of the ground or subsoil compacted by the ground compactor 10 can be generated by scanning the ground or subsoil, and can be used for further evaluation.

[0029] Figure 2 A ground detection radar-density measuring device 34, for example, is shown arranged on a crossbeam 26 of a subframe 16. In conjunction with this ground detection radar-density measuring device 34, a measuring port 40 is formed in a plate-like region 38 of the crossbeam 26, which is formed as a hollow beam, facing the ground 36 to be compacted or already compacted. This measuring port 40 allows detection of the portion of the ground 36 located below this region of the subframe 16. The ground detection radar-density measuring device 34 includes, for example, a plate-like sensor support 42. In the illustrated embodiment, the ground detection radar-density sensor 44 is supported on this support such that its measurement observation area 46 faces downward toward the ground 36 through the measuring port 40. To protect the ground detection radar-density sensor 44 from vibration or other impacts, the sensor support 42 is supported on the crossbeam 26 or its plate-like region 38 via multiple elastic suspension elements 48 (e.g., made of rubber material).

[0030] In order to specifically detect changes in the compaction state of the ground 16 produced by the compactor rollers 20, it is advantageous to install at least one such ground detection radar-density measuring device 34 on each side of the compactor rollers 20 along the longitudinal direction L of the ground compactor. This means that such ground detection radar-density measuring device 34 can also be used, for example, as... Figure 2 The arrangement shown is in another beam 28 located further away from the main frame 14.

[0031] In order to provide information on the compaction status of the compacted ground in the width direction (i.e., the transverse direction Q of the compactor), it is more advantageous to provide ground detection radar-density measuring devices 34 spaced apart from each other along the transverse direction Q of the compactor (e.g., on crossbeam 26 and / or another crossbeam 28).

[0032] In addition to providing one or more ground detection radar-density measuring devices 34 in one or two crossbeams 26, 28, or as an alternative, especially when the longitudinal beams 30, 32 are formed as hollow beams, one or more density measuring devices may also be provided therein.

[0033] In addition to providing one or more ground-based radar-density measuring devices 34 on the subframe 16, or as an alternative, one or more such ground-based radar-density measuring devices 34 may also be provided on the main frame 14. For example, one or more ground-based radar-density measuring devices 34 may be provided in the crossbeams 50 of the main frame 40. It is particularly advantageous to arrange such ground-based radar-measuring devices 34 in the area of ​​an inspection port 54 of the main frame 14, which may be closed by a plate-like sealing element 52, through which the drive unit 22 or a unit located in the internal volume region H of the main frame can be accessed. VI Other devices within. For example, this ground detection radar-density measuring device 34, located in the area of ​​the inspection port 54, can be configured to... Figure 2 The corresponding method is positioned on the base plate of the main frame 14, relative to the ground to be compacted or already compacted.

[0034] By placing one or more ground detection radar-density measurement devices 34 in the internal volume region VI (i.e., the internal volume region N of the sub-frame) of the ground compactor 10. VI and / or the internal volume area H of the main frame VI This ensures that the setting is not affected by external factors, especially due to the fact that... Figure 2 The ground detection radar-density measurement device 34 shown is positioned to ensure reliable and accurate detection of ground conditions.

[0035] Figure 3 A ground compactor 10, designed as a road roller unit, is shown, having a main frame 14 (generally referred to as the rear unit) and a sub-frame 16 (generally referred to as the front unit). The main frame 14 and the sub-frame 16 are pivotally connected together about a steering axis A. A drive unit 22 and a control console 24 are mounted on the main frame 14. Furthermore, two drive wheels 56 are provided on the main frame 14, which can be driven by the drive unit 22 to rotate, thereby also moving the ground compactor 10 forward.

[0036] The subframe has two crossbeams 26, 28 and longitudinal beams 30, 32 connected thereto, which surround compactor rollers 20 rotatably supported on the subframe 16.

[0037] For example, such as Figure 3 As shown, one or both of the crossbeams 26 and 28 can be referenced above. Figure 2 One or more ground-detection radar-density measuring devices 34 are arranged in the manner described. If the longitudinal beams 30, 32 are designed as hollow beams, one or more ground-detection radar-density measuring devices 34 may be arranged therein, either alternatively or additionally. One or more ground-detection radar-density measuring devices 34 may also be arranged on the main frame 14, for example, in its rear region, or ground-detection radar-density measuring devices 34 may be arranged at a distance from each other along the longitudinal direction L of the ground compactor.

[0038] Figure 4 Another design type of the ground compactor 10 is shown. Figure 4 The ground compactor 10 is essentially a dual-roller compactor with two compactor rollers 18 and 20. The compactor rollers 20 are supported on a main frame 14, which also supports the drive unit 32. The compactor rollers 20 are supported on a sub-frame 16 with an operating platform 24. The main frame 14 and the sub-frame 16 are pivotally supported relative to each other about a steering axis A. One or more ground detection radar-density measuring devices 34, for example, can be mounted on the main frame 14 and / or the sub-frame 16. Figure 2 The structure is supported on the corresponding base plate as shown. For example, it can also be supported in the volume area H inside the main frame. VI One or more ground detection radar-density measuring devices 34 are positioned on the main frame 14, angled forward toward the ground in front of the compactor rollers 18 located on the main frame 14, so as to detect the compaction state before or after the ground compactor 10 rolls the ground, depending on the direction of movement. Corresponding positioning can also be performed on the sub-frame 16.

[0039] Figure 5 A swing-support type ground compactor 10 is shown, wherein two sub-frames 16, 16', designed as articulated supports, are pivotally supported on a main frame 14 about corresponding steering axes A, A'. Compactor rollers 20, 20' are rotatably supported on each sub-frame 16, 16', which is designed as an articulated support. One or more ground detection radar-density measuring devices 34 can be arranged in the internal volume region H of the main frame. VI In the middle, it can also be accommodated in the corresponding internal volume area N of the sub-frames 16 and 16'. VIIn this way, one or more ground detection radar-density measuring devices 34 can detect the ground below the ground compactor 10 through corresponding measuring ports, thereby providing information about its compaction status or density.

[0040] Finally, it should be noted that if multiple ground detection radar-density measuring devices 34 are installed on the aforementioned ground compactor 10, these devices can be installed in any of the positions shown above and in the figures. It is particularly advantageous that at least two ground detection radar-density measuring devices 34 are arranged at a distance from each other along the longitudinal direction L of the ground compactor, for example, they are arranged along the longitudinal direction L to both sides of the compactor rollers 18 or 20, or / and at least two ground detection radar-density measuring devices 34 are arranged at a distance from each other along the transverse direction Q of the compactor. For example, when using two ground detection radar-density measuring devices 34, one ground detection radar-density measuring device 34 can be arranged along its transverse direction in a crossbeam 26 in a longitudinal end region, while the other ground detection radar-density measuring device 34 is arranged in another crossbeam 28 in another longitudinal end region, i.e., located on or near the other side of the ground compactor 10 along the transverse direction Q of the ground compactor.

Claims

1. A ground compaction machine, comprising: At least one compactor roller (18, 20) rotatably supported on a compactor frame (12), characterized in that at least one ground detection radar-density measuring device (34) is arranged within an internal volume region (VI) of the compactor frame (12), wherein the compactor frame (12) comprises a main frame (14) and at least one sub-frame (16) pivotally connected to the main frame (14) about a steering axis (A), wherein a drive device (22) for driving the ground compactor (10) is provided on the main frame (14), and the compactor roller (20) rotatably supported on at least one of the sub-frames (16), wherein the main frame (14) has an internal volume region (H) of the main frame. VI The internal volume area (H) of the main frame VI The system includes a drive unit (22) and at least one ground detection radar-density measurement device (34), wherein at least one inspection port (54) is provided in the main frame (14) and arranged in the internal volume area (H) of the main frame. VI At least one ground detection radar-density measurement device (34) enters through at least one of the inspection ports (54).

2. The ground compactor according to claim 1, characterized in that, At least one of the sub-frames (16) includes a crossbeam (26) extending in the transverse direction (Q) of the ground compactor, wherein the sub-frame (16) is pivotally connected to the main frame (14) in the region of the crossbeam (26).

3. The ground compactor according to claim 2, characterized in that, The internal volume area (N) of the sub-frame of the beam (26) VI At least one ground detection radar-density measurement device (34) is arranged in the ) 4. The ground compactor according to claim 3, characterized in that, The crossbeam (26) is formed as a hollow beam to provide internal volume area (N) of the subframe. VI ).

5. The ground compactor according to any one of claims 2 to 4, characterized in that, At least one of the sub-frames (16) includes another crossbeam (28) extending in the transverse direction (Q) of the ground compactor. This other crossbeam (28) is spaced apart from the crossbeam in the longitudinal direction (L) of the ground compactor and connected to the crossbeam (26) by two longitudinal beams (30, 32). The two longitudinal beams (30, 32) are spaced apart from each other in the transverse direction (Q) of the ground compactor and extend in the longitudinal direction (L) of the ground compactor. The compactor rollers (20) are rotatably supported on the longitudinal beams (30, 32). At least one ground detection radar density-measuring device (34) is arranged within the internal volume region (N) of the sub-frame of the other crossbeam (28). VI The internal volumetric area (N) of the subframe and / or at least one longitudinal beam (30, 32) VI )middle.

6. The ground compactor according to claim 5, characterized in that, At least one of the other crossbeam (28) and / or the longitudinal beams (30, 32) is formed as a hollow beam to provide an internal volumetric area (N) within the subframe. VI ).

7. The ground compactor according to claim 2, characterized in that, Two subframes (16, 16') designed as articulated supports are pivotally connected to the main frame (14) about their respective steering axes (A, A'), and at least one ground detection radar-density measurement device (34) is arranged in the internal volume region (N) of the at least one subframe (16, 16') designed as articulated supports. VI )middle.

8. The ground compactor according to any one of claims 1 to 4, characterized in that, Arranged in the volume area (H) inside the main frame VI Each ground detection radar-density measurement device (34) in the ) enters via at least one of the inspection ports (54).

9. The ground compactor according to any one of claims 1 to 4, characterized in that, At least one ground detection radar-density measuring device (34) includes: a sensor support (42) supported on the compactor frame (12) by at least one elastically deformable suspension element (48); and at least one ground detection radar-density sensor (44) supported on the sensor support (42).

10. The ground compactor according to claim 9, characterized in that, Each ground detection radar-density measuring device (34) includes: a sensor support (42) supported on the compactor frame (12) by at least one elastically deformable suspension element (48); and at least one ground detection radar-density sensor (44) supported on the sensor support (42).

11. The ground compactor according to any one of claims 1 to 4, characterized in that, At least one ground detection radar-density measuring device (34) is carried on the plate-shaped bearing area (38) of the compactor frame (12).

12. The ground compactor according to claim 11, characterized in that, Each ground detection radar-density measurement device (34) is carried on the plate-shaped bearing area (38) of the compactor frame (12).

13. The ground compactor according to any one of claims 1 to 4, characterized in that, A measuring port (40) associated with at least one ground detection radar-density measuring device (34) is provided on the compactor frame (12).

14. The ground compactor according to claim 13, characterized in that, A measuring port (40) associated with each ground detection radar-density measuring device (34) is provided on the compactor frame (12).

15. The ground compactor according to any one of claims 1 to 4, characterized in that, Along the longitudinal direction (L) of the ground compactor, at least one ground detection radar-density measuring device (34) is associated with at least one compactor roller (18, 20) on each side of the compactor roller (18, 20), and / or, at least two ground detection radar-density measuring devices (34) are arranged at a distance from each other along the transverse direction (Q) of the ground compactor.

16. The ground compactor according to claim 15, characterized in that, Along the longitudinal direction (L) of the ground compactor, at least one ground detection radar-density measuring device (34) is disposed on each side of each compactor roller (18, 20) in association with each compactor roller (18, 20).

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