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EP-4660374-B1 - FLOOR COMPRESSOR

EP4660374B1EP 4660374 B1EP4660374 B1EP 4660374B1EP-4660374-B1

Inventors

  • Mühlhausen, Axel
  • Krockauer, Rainer
  • Kreger, Marco
  • MEINDL, KLAUS

Dates

Publication Date
20260513
Application Date
20250515

Claims (14)

  1. A soil compactor comprising at least one compactor roller (18, 20) rotatably supported on a compactor frame (12) and at least one soil radar density measuring arrangement (34) arranged in an inner volume region (VI) of the compactor frame (12).
  2. The soil compactor according to claim 1, characterized in that the compactor frame (12) comprises a main frame (14) and at least one sub-frame (16) pivotably connected to the main frame (14) about a steering axis (A), wherein a drive unit (22) to be operated for driving the soil compactor (10) is provided on the main frame (14) and a compactor roller (20) is rotatably supported on the at least one sub-frame (16).
  3. The soil compactor according to claim 2, characterized in that the at least one sub-frame (16) comprises a cross member (26) extending in a soil compactor transverse direction (Q), the sub-frame (16) being pivotably connected to the main frame (14) in the region of the cross member (26).
  4. The soil compactor according to claim 3, characterized in that at least one soil radar density measuring arrangement (34) is arranged in a sub-frame inner volume region (N VI ) of the cross member (26).
  5. The soil compactor according to claim 4, characterized in that the cross member (26) is designed as a hollow member for providing a sub-frame inner volume region (N VI ).
  6. The soil compactor according to any one of claims 3-5, characterized in that the at least one sub-frame (16) comprises a further cross member (28) arranged in a longitudinal direction (L) of the soil compactor at a distance from the cross member and connected to the cross member (26) by two longitudinal members (30, 32) arranged at a distance from one another in the transverse direction (Q) of the soil compactor and extending substantially in the longitudinal direction (L) of the soil compactor, and which extends substantially in the soil compactor transverse direction (Q), wherein the compactor roller (20) is rotatably supported on the longitudinal members (30, 32), and in that at least one soil radar density measuring arrangement (34) is arranged in a sub-frame inner volume region (N VI ) of the further cross member (28) or/and in a sub-frame inner volume region (N VI ) of at least one longitudinal member (30, 32).
  7. The soil compactor according to claim 6, characterized in that the further cross member (28) and/or at least one of the longitudinal members (30, 32) is designed as a hollow member for providing a sub-frame inner volume region (N VI ).
  8. The soil compactor according to claim 3, characterized in that two sub-frames (16, 16') designed as steering frames are pivotably connected to the main frame (14) about a respective steering axis (A, A'), and in that at least one soil radar density measuring arrangement (34) is arranged in a sub-frame inner volume region (N VI ) of at least one of the sub-frames (16, 16') designed as steering frames.
  9. The soil compactor according to any one of claims 2-8, characterized in that the main frame (14) presents a main frame inner volume region (H VI ) containing the drive unit (22) and at least one soil radar density measuring arrangement (34).
  10. The soil compactor according to claim 9, characterized in that at least one preferably closable inspection opening (54) is provided in the main frame (14), and in that at least one, preferably each, soil radar density measuring arrangement (34) arranged in the main frame inner volume region (H VI ) is accessible via at least one inspection opening (54).
  11. The soil compactor according to any one of claims 1-10, characterized in that at least one, preferably each soil radar density measuring arrangement (34) comprises a sensor carrier (42) carried on the compactor frame (12) by means of at least one elastically deformable suspension element (48) and at least one soil radar density sensor (44) carried on the sensor carrier (42).
  12. The soil compactor according to any one of claims 1-11, characterized in that at least one, preferably each, soil radar density measuring arrangement (34) is supported on a plate-like carrier region (38) of the compactor frame (12).
  13. The soil compactor according to any one of claims 1-12, characterized in that a measuring opening (40) is provided on the compactor frame (12) in association with at least one, preferably each, soil radar density measuring arrangement (34).
  14. The soil compactor according to any one of claims 1-13, characterized in that at least one soil radar density measuring arrangement (34) is provided on each side of the compactor roller (18, 20) in a longitudinal soil compactor longitudinal direction (L) in association with at least one, preferably each, compactor roller (18, 20), or/and in that at least two soil radar density measuring arrangements (34) are arranged at a distance from one another in a soil compactor transverse direction (Q).

Description

The present invention relates to a soil compactor which can be used to compact soil material, such as asphalt. From the WO 2021/229146 A1 A soil compactor designed as a so-called roller compactor is known, in which a compactor frame comprises a main frame with a drive unit, an operator's platform, and drive wheels driven by the drive unit. A secondary frame is pivotally connected to the main frame about a substantially vertically oriented pivot axis. A compactor roller is rotatably mounted on the secondary frame about a roller axis of rotation that extends substantially in a transverse direction to the soil compactor and substantially orthogonally to a longitudinal direction to the soil compactor. A ground-penetrating radar moisture measuring device is mounted on the underside of the main frame, projecting downwards in a vertical direction, such that an antenna of this ground-penetrating radar moisture measuring device is positioned at a short distance from the soil to be measured with regard to its moisture content. The object of the present invention is to provide a soil compactor with a ground-penetrating radar density measurement arrangement protected against external influences. According to the invention, this problem is solved by a soil compactor comprising at least one compactor roller rotatably mounted on a compactor frame and at least one ground radar density measuring arrangement arranged in an internal volume area of the compactor frame. By arranging at least one ground-penetrating radar density measurement device within an internal volume area of the compressor frame, i.e., not protruding outwards from the compressor frame, such a ground-penetrating radar density measurement device is essentially protected against external physical impacts. This is particularly important in areas where such soil compactors operate. If obstacles are present that could collide with the soil compactor, damage to a ground-penetrating radar density measurement system mounted on it can be avoided. Even during cleaning work, for example with a high-pressure cleaner, there is no risk of damage to a ground-penetrating radar density measurement system mounted on the soil compactor. The compactor frame can comprise a main frame and at least one subframe pivotably connected to the main frame about a steering axis, wherein a drive unit for driving the soil compactor is provided on the main frame and a compactor roller is rotatably mounted on the at least one subframe. Such a soil compactor can be designed as a so-called tandem roller with a compaction roller rotatably mounted on the main frame and a compaction roller rotatably mounted on a secondary frame, as a so-called roller train with a compaction roller rotatably mounted on the secondary frame and drive wheels mounted on the main frame, or can be designed as a so-called articulated soil compactor, in which two secondary frames designed as steering yokes are pivotably attached to the main frame and a compaction roller is rotatably mounted on each secondary frame. Furthermore, in such a soil compactor, regardless of its design, one or more compaction rollers can be mounted on the main frame and/or at least one secondary frame as continuous or split compaction rollers with a roller shell generally made of steel. Alternatively or additionally, in such a soil compactor, one or more compaction rollers can each be configured with a plurality of rubber-tired rollers arranged successively in the direction of a roller axis of rotation. For the pivotable connection, at least one secondary frame can comprise a crossbeam extending in a soil compactor transverse direction, wherein The secondary frame is pivotally connected to the main frame in the area of the crossbeam. At least one ground-penetrating radar density measurement system can be arranged in an internal volume area of the crossbeam within a secondary frame. For this purpose, the crossbeam can be designed as a hollow beam or hollow profile beam to provide this internal volume area. Particularly when the soil compactor is designed as a tandem roller or roller train, the at least one secondary frame can comprise a further crossbeam extending substantially in the transverse direction, arranged at a distance from the crossbeam in a longitudinal direction of the soil compactor and connected to the crossbeam by two longitudinal beams arranged at a distance from each other in the transverse direction of the soil compactor and extending substantially in the longitudinal direction of the soil compactor, wherein the compactor roller is rotatably mounted on the longitudinal beams. At least one ground-penetrating radar density measurement device can be arranged in an internal volume area of the secondary frame within the further crossbeam and/or in an internal volume area of at least one longitudinal beam within the secondary frame. It may also be provided that the further crossbeam and/or at least one of the longitudinal beams is d