Ground processing roller for a ground processing machine

Abstract

The invention relates to a ground processing roller for a ground processing machine, in particular a ground compactor, comprising a roller mantle which extends in the direction of the roller axis of rotation and encloses the roller axis of rotation, two disc-shaped support elements which are arranged at a distance from one another in the direction of the roller axis of rotation and are connected to the inner side of the roller mantle, a circumferential wall which extends in the direction of the roller axis of rotation between the support elements and adjoins them, wherein the inner surface of the circumferential wall together with the support elements defines a lubricant accommodation volume, at least one lubricant discharge opening which is open towards the lubricant accommodation volume is provided in at least one of the support elements, at least one lubricant collection volume is formed in the lubricant accommodation volume, which is emptied by means of the lubricant discharge opening which is open towards it. In order to provide the lubricant collection volume, the inner surface of the circumferential wall has a radial distance from the roller axis of rotation which increases in the direction of the roller axis of rotation above the lubricant discharge opening which is open towards the lubricant collection volume.

Description

Technical Field

[0001] This invention relates to a ground processing roller for a ground processing machine (particularly a ground compactor), the ground processing roller comprising: a roller sleeve extending in the direction of the roller rotation axis and surrounding the roller rotation axis; two disc-shaped support elements arranged at a distance from each other in the direction of the roller rotation axis and connected to the inner side of the roller sleeve; and a circumferential wall extending between the support elements in the direction of the roller rotation axis and abutting the support elements, wherein the inner surface of the circumferential wall, together with the support elements, defines a lubricant holding volume, wherein at least one lubricant discharge port open toward the lubricant holding volume is provided in at least one of the support elements, wherein at least one lubricant collecting volume is formed in the lubricant holding volume, wherein the at least one lubricant collecting volume can be emptied via the lubricant discharge port open thereto. Background Technology

[0002] Such a floor-working roller is known from JP 5745457 B2. In this known floor-working roller, two disc-shaped support elements and a circumferential wall extending between and adjacent to them are integrally provided as cast parts. To achieve a uniform mass distribution in the direction of the roller's axis of rotation, the two support elements are sized differently from each other. Extending rib-like protrusions are provided on the inner surface of the circumferential wall at a circumferential distance from each other along the direction of the roller's axis of rotation. These rib-like protrusions have a radially decreasing inward projection height above the inner surface along the direction of the roller's axis of rotation.

[0003] In one of the disc-shaped support elements, a discharge opening is provided opposite to each other relative to the roller's axis of rotation, through which liquid lubricant contained in the lubricant reservoir can be discharged. For lubricant discharge, one of the discharge openings can be positioned in the lower region along the height direction, for example, in a region directly below the roller's axis of rotation along the height direction. Under the influence of gravity, lubricant that does not completely fill the lubricant reservoir will accumulate in the lower region of the lubricant reservoir. In this state, the lubricant reservoir provides a lubricant collection volume, and the lubricant discharge port positioned lower along the height direction opens towards the lubricant collection volume. Summary of the Invention

[0004] The purpose of this invention is to design a ground processing roller to achieve better emptying of the lubricant holding volume.

[0005] According to the invention, this objective is achieved by a ground processing roller for a ground processing machine (particularly a ground compactor), the ground processing roller comprising: a roller sleeve extending in the direction of the roller rotation axis and surrounding the roller rotation axis; two disc-shaped support elements arranged at a distance from each other in the direction of the roller rotation axis and connected to the inner side of the roller sleeve; and a circumferential wall extending between the support elements in the direction of the roller rotation axis and abutting the support elements, wherein the inner surface of the circumferential wall, together with the support elements, defines a lubricant holding volume, wherein at least one lubricant discharge port open toward the lubricant holding volume is provided in at least one of the support elements, wherein at least one lubricant collecting volume is formed in the lubricant holding volume, wherein the at least one lubricant collecting volume can be emptied via the lubricant discharge port open thereto.

[0006] Ground processing rollers are characterized by their ability to provide lubricant collection volume. - The inner surface of the circumferential wall has a radial distance to the roller's axis of rotation, which increases along the direction of the roller's axis of rotation at a lubricant discharge port that is open toward at least one lubricant collection volume. or / and - The inner surface of the circumferential wall has a radial distance to the axis of rotation of the roller, which increases along the circumferential direction around the axis of rotation of the roller at a lubricant discharge port open toward at least one lubricant collection volume.

[0007] By providing at least one volume region of the lubricant-receiving volume, which effectively serves as a lubricant collection volume when lubricant is discharged from the lubricant-receiving volume, and according to the invention, based on the variation of the radial distance of the inner surface of the circumferential wall, when lubricant is discharged from the lubricant-receiving volume, the lubricant is increasingly guided in the direction of the discharge or open lubricant outlet, or increasingly accumulates in the region near the lubricant outlet of the lubricant-receiving volume. On the one hand, this results in an increasing accumulation of contaminants contained in the lubricant in the region near the lubricant outlet for discharge, and thus an increasing amount of lubricant is discharged from the lubricant-receiving volume accordingly with the lubricant discharged via the lubricant outlet. On the other hand, this reduces the volume fraction of the lubricant-receiving volume from which lubricant cannot flow even when the lubricant outlet is open.

[0008] When the inner surface of the circumferential wall is designed such that the radial distance from the roller rotation axis to the roller rotation axis increases along the direction of the roller rotation axis in the direction of the lubricant discharge port open toward at least one lubricant collection volume, the inner surface of the circumferential wall can be substantially rotationally symmetrical with respect to the roller rotation axis, at least in the axial region of the lubricant collection volume, in particular to achieve a uniform mass distribution in the circumferential direction.

[0009] Advantageously, the inner surface of the circumferential wall is substantially rotationally symmetric over the entire axial extension of the circumferential wall.

[0010] To facilitate the manufacture of ground-processing rollers, the radial distance along the roller's axis of rotation can be substantially continuously increased when the inner surface of the circumferential wall is designed such that the radial distance from the lubricant discharge port, which opens towards at least one lubricant collection volume, increases along the direction of the roller's axis of rotation. In particular, if the inner surface is also designed to be rotationally symmetric, this can result in a fundamentally conical or truncated conical geometry for the inner surface.

[0011] When the inner surface of the circumferential wall is designed such that the radial distance from the roller's axis of rotation—along the circumferential direction around the roller's axis of rotation at a lubricant discharge port open toward at least one lubricant collection volume—increases, the inner surface of the circumferential wall is substantially cylindrical, at least in the axial region of the lubricant collection volume. This also facilitates the manufacture of such ground-machined rollers. It should be noted that this cylindrical geometry of the inner surface of the circumferential wall means that it has the same radial distance to the roller's axis of rotation in the same circumferential region across all axial regions encompassed by the cylindrical geometry. Therefore, this cylindrical geometry can have, for example, a circular cross-sectional profile, a polygonal cross-sectional profile, an elliptical or oval cross-sectional profile, etc.

[0012] Advantageously, for ease of manufacture, the inner surface of the circumferential wall can be substantially cylindrical over the entire axial extension of the circumferential wall.

[0013] When the inner surface of the circumferential wall is designed such that the radial distance to the roller's rotation axis increases along the circumferential direction surrounding the roller's rotation axis and towards the lubricant discharge port open to at least one lubricant collection volume, the inner surface of the circumferential wall can, for example, have a polygonal cross-sectional profile at least in the axial region of the lubricant collection volume, wherein at least a portion of the at least one lubricant collection volume is formed in the corner region of the polygonal cross-sectional profile. In such a polygonal cross-sectional profile, for each corner region, the radial distance to the roller's rotation axis increases such that when such a corner region is positioned along the height direction below the roller's rotation axis (e.g., directly below the roller's rotation axis), the lubricant contained in the lubricant receiving volume increases in at least a portion of the lubricant collection volume, then accumulates in the effective angular region of the cross-sectional geometry of the inner circumferential wall, and can flow out via this volume region and the lubricant discharge port open to it.

[0014] In another design of the ground-processing roller, it can be specified that when the inner surface of the circumferential wall is designed such that—along the circumferential direction around the roller's axis of rotation at a lubricant discharge port open toward at least one lubricant collection volume—the radial distance to the roller's axis of rotation increases, the inner surface of the circumferential wall has a cross-sectional profile at least in the axial region of the lubricant collection volume. This cross-sectional profile has a substantially constant radial distance to the roller's axis of rotation in a first circumferential extension region and a preferably continuously increasing radial distance to the roller's axis of rotation in a second circumferential extension region, which is adjacent to the first circumferential extension region in both circumferential directions up to a distance vertex, wherein at least a portion of at least one lubricant collection volume is formed in the region of the distance vertex (Abstandsscheitel). Since the first circumferential extension region has a substantially constant radius and the radius varies only in the second circumferential extension region, a nearly uniform mass distribution along the circumferential direction is supported.

[0015] In another variation of the invention, when the inner surface of the circumferential wall is designed such that the radial distance to the roller rotation axis increases along the circumferential direction about the roller rotation axis and toward the lubricant discharge port open to at least one lubricant collection volume, the inner surface of the circumferential wall has a cross-sectional profile at least in the axial region of the lubricant collection volume, which preferably has a continuously increasing radial distance to the roller rotation axis in both circumferential directions from a minimum distance to a distance vertex, wherein at least a portion of at least one lubricant collection volume is formed in the region of the distance vertex.

[0016] In particular, if in such a design the minimum distance is substantially opposite to the apex distance relative to the roller rotation axis, a substantially droplet-shaped cross-sectional profile of the inner surface can be achieved, which supports the defined accumulation of lubricant or contaminants contained therein in a lubricant collection volume positioned along the height direction below during the discharge process.

[0017] Furthermore, in order to provide at least a portion of such a lubricant collection volume, the inner surface of the circumferential wall is designed such that, as the radial distance from the inner surface of the circumferential wall to the roller rotation axis increases along the circumferential direction about the roller rotation axis and toward the lubricant discharge port open toward at least one lubricant collection volume, the inner surface of the circumferential wall has a stepped radial extension at least in the axial region of the lubricant collection volume.

[0018] To enable the construction of easily manufactured floor processing rollers using pre-formed sheet metal components, it is recommended that at least one support element (preferably each of two support elements) having at least one lubricant outlet be connected to the circumferential wall via a weld that preferably surrounds the roller's axis of rotation circumferentially without interruption. This achieves a robust connection between the components. Furthermore, the weld ensures a tight seal of the lubricant-containing volume.

[0019] For stability reasons, it is necessary or advantageous to form a weld at least radially inner to the circumferential wall. To avoid interference with the welding of the lubricant drain in this case, the inner surface of the circumferential wall in the region of at least one lubricant drain can be located radially outer to and at a radial distance from the lubricant drain. The height of this step can at least correspond to the radial extension of the weld formed on the inner side of the circumferential wall, such that the placement or introduction of the lubricant drain does not affect the structural strength of the weld.

[0020] In particular, if the ground processing rollers are used to compact the ground, the unbalance device—which has at least one unbalanced mass block that can rotate about the unbalanced axis of rotation—can be arranged in the lubricant containment volume.

[0021] Here, at least one unbalanced mass block can be arranged on an unbalanced shaft, which is rotatably supported relative to a support element in two axial end regions by bearing devices, such that the journal is open to a lubricant-containing volume, and the bearing (particularly a rolling bearing) located therein can be lubricated and cooled by the lubricant contained in the lubricant-containing volume.

[0022] The present invention also relates to a ground processing machine, particularly a ground compactor, which includes at least one ground processing roller constructed according to the present invention. Brief description of the attached diagram

[0023] The present invention will now be described in detail with reference to the accompanying drawings. The drawings show: Figure 1 This is a side view of a ground processing machine designed as a ground compactor; Figure 2 yes Figure 1 Axial view of the ground processing rollers of the ground compactor; Figure 3 yes Figure 2 A three-dimensional longitudinal sectional view of the ground processing roller shown; Figure 4 It is a longitudinal sectional view of a roller sleeve consisting of two disc-shaped support elements and a circumferential wall extending between them for ground processing rollers. Figure 5 yes Figure 4 A longitudinal sectional perspective view of the arrangement shown; Figure 6 yes Figure 4 and Figure 5 The arrangement shown is in Figure 4 Detailed views in area VI; Figure 7 This is an axial view of an alternative design scheme for ground processing rollers; Figure 8 yes Figure 7 A longitudinal sectional perspective view of the ground processing roller; Figure 9 This is another alternative design scheme for ground processing rollers, corresponding to... Figure 7 The view; Figure 10 This is another alternative design scheme for ground processing rollers, corresponding to... Figure 7 The view; Figure 11 yes Figure 10 A magnified view of detail XI in the image. Detailed Implementation

[0024] exist Figure 1 In this design, the ground processing machine, which is designed as a ground compactor, is generally represented by 10. The ground processing machine 10 includes a rear carriage 12, on which a drive unit and drive wheels 16 are mounted. The drive wheels 16 are driven by the drive unit to move the ground processing machine 10 forward on the ground surface 14 to be processed. Furthermore, an operator's platform 18 for operating the ground processing machine 10 is provided on the rear carriage 12.

[0025] The frame-like front vehicle 20 is articulated to the rear vehicle 12. Ground processing rollers 22 surround and... Figure 1 The orthogonal axis of rotation of the drawing plane is rotatably supported on the front vehicle 20.

[0026] The basic structure of this ground processing roller 22 can be... Figure 2 and Figure 3 As seen in the image, the ground processing roller 22 includes a roller sleeve 24 that is cylindrical relative to the roller's axis of rotation. Two disc-shaped support elements 28, 30, also commonly referred to as ronden blanks, are fixedly connected to the inner side 26 of the roller sleeve 24 by welding at an axial distance from each other. A tubular circumferential wall 32 extends axially between the two support elements 28, 30 and is connected to the support elements 28, 30 by welding at its two axial end regions. The inner surface 34 of the circumferential wall 32, together with the support elements 28, 30, defines a lubricant receiving volume 36, which is partially filled with a liquid lubricant, such as lubricating oil.

[0027] The unbalance device, generally designated 38, is arranged within a lubricant containment volume. The unbalance device 38 includes an unbalance shaft 40, which, in the illustrated example, is rotatable about an unbalanced axis of rotation (e.g., a roller axis of rotation) by an unbalanced drive motor 42. At its two axial end regions, the unbalance shaft 40 is rotatably supported via bearings 44 on support units 46, 48. Support units 46, 48 are inserted into central openings 50, 52 formed in support elements 28, 30 and secured to them by screw connections, such that the unbalance shaft 40 is supported and rotatably supported relative to the support elements 28, 30 via the bearings 44 and the support units 46, 48. At least one unbalanced mass block 54 is arranged on the unbalance shaft 40 and has a center of gravity eccentric to the unbalanced axis of rotation. By rotating the unbalanced shaft 40 and thus rotating at least one unbalanced mass block 54, a force or acceleration orthogonal to the roller rotation axis is applied to the ground processing roller 22, causing it to vibrate to improve the compaction operation.

[0028] It should be noted that the above references Figures 1 to 3 The basic structure of the ground processing machine 10 or its ground processing roller 22 is described. The design of this ground processing machine 10 or ground processing roller 22 can deviate from the previously described design in various aspects. For example, this ground processing roller can also be mounted on the rear carriage 12. The unbalance device 38 can have multiple unbalance shafts with unbalanced mass blocks mounted on them, these unbalance shafts being eccentric relative to the roller's rotation axis and arranged at circumferential distances from each other.

[0029] Figures 4 to 6 The ground processing roller 22 or roller sleeve 24 is shown in more detail, having disc-shaped support elements 28, 30 connected to its inner side 26, and a circumferential wall 32 extending between the disc-shaped support elements in the direction of the roller's rotation axis W. Figure 4 In the support element 28 visible on the left, a lubricant outlet 56 is provided in the circumferential region. By means of a closing element, not shown in the figure, and capable of being screwed into the lubricant outlet 56, the lubricant outlet 56 can be closed, thereby preventing the lubricant contained in the lubricant receiving volume 36 from flowing out of the lubricant receiving volume 36.

[0030] Because the lubricant reservoir 36 is not completely filled with lubricant, lubricant will accumulate in the lower region of the lubricant reservoir 36, especially when the floor processing machine 10 is stationary. For example, if lubricant is to be discharged from the lubricant reservoir 36 to be replaced with fresh lubricant, the lubricant discharge port 56 can be positioned vertically at the bottom, preferably substantially directly below the roller rotation axis W. Lubricant will then accumulate in the region of the lubricant reservoir 36, which in this state acts as the lubricant collection volume 58. If the sealing element is removed from the lubricant discharge port 56 in this state, lubricant can flow out of the lubricant collection volume 58, and in the process, contaminants contained in the lubricant will also be carried away from the lubricant reservoir 36.

[0031] To ensure that the lubricant can flow out as completely as possible from the lubricant receiving volume 36 or the area therein that serves as the lubricant collection volume 58, the circumferential wall 32 is designed such that its radial distance R from the roller rotation axis W along the direction of the roller rotation axis W on the support element 28 having the lubricant discharge port 56 increases. Advantageously, in this case, the circumferential wall 32 has an increased radial distance R over its entire extension region between its two support elements 28, 30, thereby allowing the radial distance R to be constant in the circumferential direction for each axial region, such that the circumferential wall 32 or its inner surface 34 is designed to be substantially rotationally symmetric with respect to the roller rotation axis W and, for example, can have a frustoconical geometry. It should be noted that when the circumferential wall 32 is constructed, for example, as a sheet metal forming component, this design refers to the circumferential wall 32 as a whole. However, for the purposes of this invention, it is important that the variation in the radial distance R in the direction of the roller rotation axis exists particularly on the inner surface 34 of the circumferential wall 32.

[0032] exist Figure 6 As can be seen, in the region where the circumferential wall 32 is adjacent to the support element 28 with the lubricant discharge port 56, and particularly in the circumferential region of the lubricant discharge port, especially in the circumferential region where the center Z of the lubricant discharge port 56 is located, the inner surface 34 of the circumferential wall 32 is radially distanced from the lubricant discharge port 56 by a distance D, and is located outside the lubricant discharge port 56. This means that a step with a radial height corresponding to the distance D is formed in the transition from the inner surface 34 of the circumferential wall 32 to the lubricant discharge port 56. This ensures that the circumferential wall 32 can be connected to the support element 28 by means of a weld 60 formed on its inner side. For stability reasons, it is also advantageous to provide such a weld 62 that completely surrounds the circumference in the direction of rotation around the axis of rotation W of the roller on the outer side of the circumferential wall 32.

[0033] Providing a distance D between the lubricant outlet 56 and the inner surface 34 of the circumferential wall 32 ensures that the weld 60 is not damaged when the lubricant outlet 56 is introduced after the circumferential wall 32 has been connected to the support element 28.

[0034] Because the radial distance R of the inner surface 34 in the design of the circumferential wall 32 increases in the direction of the roller rotation axis W, the dead volume T formed by the step corresponding to the distance D is minimized. Even when the lubricant discharge port 56 is open, the lubricant S will not flow out from this dead volume T. This dead volume T extends from the support element 28 along the direction of the roller rotation axis W until the radial distance R between the inner surface 34 of the circumferential wall 32 and the roller rotation axis W corresponds to the distance from the outermost radial region of the lubricant discharge port 56 to the roller rotation axis W. Therefore, the expansion of this dead volume T along the entire axial length of the circumferential wall 32 is avoided. As a result, although a step is formed in the transition between the inner surface 34 and the support element 28 and the lubricant discharge port 56, only a relatively small portion of the lubricant S remains in the lubricant holding volume 36 or in the lubricant collection volume 58 used for the discharge process. Therefore, a significantly larger proportion of contaminants contained in the lubricant S can be discharged from the lubricant holding volume 36.

[0035] It should be noted that such lubricant discharge ports 56 can of course be provided in multiple circumferential regions of the support element 28. Then, each of these lubricant discharge ports 56 can be used together with the respective associated volume regions of the lubricant receiving volume 36 and which serve as the lubricant collection volume 58 during the discharge process to discharge lubricant from the lubricant receiving volume 36.

[0036] Figure 7 and Figure 8 An alternative design for the ground processing roller 22 is shown. In this design, when the lubricant discharge port 56 is positioned at the bottom in the height direction (i.e., substantially vertically below the roller's axis of rotation W), the lubricant collection volume 58 is formed in conjunction with the lubricant discharge port 56 provided on the support element 28, wherein the lubricant and the contaminants contained therein accumulate more and more, and move along the direction of the lubricant discharge port 56 during discharge.

[0037] exist Figure 7 and Figure 8 In the design shown, the circumferential wall 32 or its inner surface 34 is substantially cylindrical and therefore has substantially the same cross-sectional geometry and cross-sectional area in all axial regions. The radial distance R of the inner surface 34 is substantially constant in the axial direction relative to the roller rotation axis W. The variation of the radial distance R is set in the circumferential direction about the roller rotation axis W.

[0038] exist Figure 7 and Figure 8 In the design shown, the circumferential wall 32 or its inner surface 34 is divided into two circumferential extension regions U1 and U2, which are separated by boundary lines L1 and L2 or transition between each other. In the first circumferential extension region U1, as... Figure 7 As shown, the first circumferential extension region U1 occupies most of the circumferential extension portion of the circumferential wall 32 or its inner surface 34, and the radial distance R between the inner surface 34 and the roller rotation axis W in the circumferential direction is substantially constant. In the second circumferential extension region U2, the radial distance R increases substantially continuously from the corresponding adjacent region to the first circumferential extension region U1, up to the distance vertex 64. In the region at the distance vertex 64, the inner surface 34 has the maximum radial distance R to the roller rotation axis W. In this region at the distance vertex 64, the lubricant discharge port 56 is radially arranged within the circumferential wall 32. Here, the lubricant discharge port 56 may also have the above-mentioned... Figure 6 The positioning of the distance D relative to the inner surface 34 of the circumferential wall 32 is shown, especially when the circumferential wall 32 is connected to the support element 28 by means of a weld 60 extending on its inner side.

[0039] By providing a distance vertex 64, compared to a design where the circumference of the circumferential wall 32 or its inner surface 34 is circular, during the discharge process, the distance vertex 64 and its lubricant discharge port 56 are positioned as low as possible along the height direction, i.e., directly below the roller rotation axis W. This results in a smaller circumferential expansion of the area where the lubricant S contained in the lubricant receiving volume 36 and the area where contaminants accumulate. This is particularly applicable to the dead volume created by providing the aforementioned steps. Compared to a design with a circular cross-sectional profile for the inner surface 34, it has a significantly smaller circumferential extension. When the lubricant 56 is discharged, a significantly smaller proportion of the lubricant and therefore a significantly smaller proportion of the contaminants remain in the dead volume formed in this way, or, when the lubricant is discharged, it accumulates to a greater extent in the lubricant collection volume 58 subsequently formed in the area of ​​the lubricant discharge port 56, allowing the contaminants contained therein to be gradually discharged from the lubricant receiving volume 36.

[0040] It should be noted that the above references Figure 7 and Figure 8The described design can also be varied, for example, such that the radial distance R varies substantially over the entire circumferential region of the inner surface 34. For instance, in the region of the minimum distance 66 opposite to the roller rotation axis W from the vertex 64, the inner surface 34 may have a minimum distance to the roller rotation axis W that increases substantially continuously in both circumferential directions toward the vertex 64 and, for example, uniformly in both circumferential directions. This results in a substantially teardrop-shaped cross-sectional profile of the inner surface 34, however, this cross-sectional profile may be constant in the direction of the roller rotation axis W, thereby obtaining a cylindrical geometry for the inner surface 34.

[0041] Figure 9 A further variation of this design is shown. In this design, the circumferential wall 32 or its inner surface 34 has a polygonal (hexagonal in this case) cross-sectional geometry. This means that there are multiple distance vertices 64 distributed on the circumference. The radial distance R from the inner surface 34 to the roller rotation axis W varies between two adjacent distance vertices 64 in the circumferential direction. In the region of at least one of these distance vertices 64, the lubricant discharge port 56 is configured such that when the distance vertex 64 with the associated lubricant discharge port 56 is arranged as low as possible in the height direction, for example, vertically directly below the roller rotation axis W, then... Figure 9 As shown, lubricant accumulates in the lubricant collection volume 58 associated with the lubricant outlet 56 or in the lubricant collection volume 58 formed in the region from the apex 64, and can flow out almost entirely from the lubricant containment volume 36.

[0042] Figure 10 and Figure 11 A further variation of this design principle is shown. In this design, the circumferential wall 32 or its inner surface 34 has a substantially constant radial distance R over almost the entire circumference of the roller's axis of rotation W. In the circumferential region where the lubricant outlet 56 is located in the support element 28, a stepped radial extension 68 is formed on the inner surface 34. Also in this design, the geometry of the inner surface 34 can be made substantially constant over the entire axial range of the circumferential wall 32, i.e., cylindrical.

[0043] By providing a stepped radial extension 68, a lubricant collection area is formed in the circumferential region of the lubricant discharge port 56 in the support element 28 during the discharge process. This lubricant and contaminants accumulate in a relatively small circumferential area, particularly at the end of the discharge process, thus preventing the accumulation of lubricant and contaminants, even with the aforementioned reference... Figure 6 The amount of lubricant remaining in the lubricant collection volume 58, which is the dead volume, is also relatively small.

[0044] Finally, it should be noted that the design aspects explained above with reference to the accompanying drawings can, of course, be combined with each other. Thus, the circumferential wall on its inner surface can have a radial distance to the roller's axis of rotation, which varies in both the axial and circumferential directions and increases towards the region where the lubricant outlet is located in the support element. If the lubricant outlet is directly adjacent to the inner surface of the circumferential wall in the radial direction, the particularly advantageous effect of the invention can also be utilized: increased accumulation of lubricant or contaminants in the circumferential or axial region where the lubricant outlet is located. This may be the case, for example, where a weld is not required on the inner side of the circumferential wall and a sufficiently stable (particularly ensuring a tight seal) connection can be achieved by a weld on the outer side. In this case, the generation of dead volume can be completely avoided.

[0045] In principle, such as Figure 11 It is also shown that the lubricant outlet can be arranged to radially overlap with the circumferential wall, for example, by introducing the lubricant outlet into the support element through drilling after the circumferential wall is connected to the support element. Such a hole can then be introduced into the axial region of the circumferential wall, such that this axial region, confined by the circumferential wall, also covers the aforementioned reference point through it. Figure 1 The described stepped orifice (in this case, a circular stepped orifice) allows for radial expansion of the inner surface of the circumferential wall. Also in this region, when lubricant is discharged from the lubricant reservoir, particularly at the end of the discharge process, the lubricant present in the lubricant collection volume can be discharged substantially completely from the lubricant reservoir, leaving almost no residue in the lubricant reservoir.

Claims

1. A floor processing roller for a floor processing machine, comprising: A roller sleeve (24) extends in the direction of the roller rotation axis (W) and surrounds the roller rotation axis (W); two disc-shaped support elements (28, 30) are arranged at a distance from each other in the direction of the roller rotation axis (W) and connected to the inner side (26) of the roller sleeve (24); and a circumferential wall (32) extends between the support elements (28, 30) in the direction of the roller rotation axis (W) and is adjacent to the support elements (28, 30), wherein the circumferential wall... The inner surface (34) of the wall (32), together with the support elements (28, 30), defines a lubricant holding volume (36), wherein at least one lubricant discharge port (56) open toward the lubricant holding volume (36) is provided in at least one of the support elements (28, 30), wherein at least one lubricant collecting volume (58) is formed in the lubricant holding volume (36), wherein at least one of the lubricant collecting volumes (58) is emptied through the lubricant discharge port (56) open thereto. The feature is that, in order to provide the lubricant collection volume (58): - The inner surface (34) of the circumferential wall (32) has a radial distance (R) to the axis of rotation (W) of the roller, the radial distance (R) increasing along the direction of the axis of rotation (W) of the roller at a lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58). or / and - The inner surface (34) of the circumferential wall (32) has a radial distance (R) to the axis of rotation of the roller (W), which increases along the circumferential direction around the axis of rotation of the roller (W) at a lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58).

2. The ground processing roller according to claim 1, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) to the roller rotation axis (W) increases along the direction of the roller rotation axis (W) at least in the axial region of the lubricant collection volume (58) through the lubricant discharge port (56) open toward the roller rotation axis (W), the inner surface (34) of the circumferential wall (32) is rotationally symmetrical with respect to the roller rotation axis (W) at least in the axial region of the lubricant collection volume (58).

3. The ground processing roller according to claim 2, characterized in that, The inner surface (34) of the circumferential wall (32) is rotationally symmetric throughout the entire axial extension region of the circumferential wall (32).

4. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) to the roller rotation axis (W) increases constantly along the direction of the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58).

5. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) increases along the circumferential direction around the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58), the inner surface (34) of the circumferential wall (32) is cylindrical at least in the axial region of the lubricant collection volume (58).

6. The ground processing roller according to claim 5, characterized in that, The inner surface (34) of the circumferential wall (32) is cylindrical throughout the entire axial extension region of the circumferential wall (32).

7. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) to the roller rotation axis (W) increases along the circumferential direction around the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58), the inner surface (34) of the circumferential wall (32) has a polygonal cross-sectional profile at least in the axial region of the lubricant collection volume (58), wherein at least a portion of at least one of the lubricant collection volumes (58) is formed in the corner region of the polygonal cross-sectional profile.

8. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) increases along the circumferential direction around the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58), the inner surface (34) of the circumferential wall (32) has a cross-sectional profile at least in the axial region of the lubricant collection volume (58), the cross-sectional profile having a constant radial distance (R) to the roller rotation axis (W) in a first circumferential extension region (U1) and an increasing radial distance (R) to the roller rotation axis (W) in a second circumferential extension region (U2), the second circumferential extension region (U2) being adjacent to the first circumferential extension region (U1) in both circumferential directions up to a distance vertex (64), wherein at least a portion of at least one of the lubricant collection volumes (58) is formed in the region of the distance vertex (64).

9. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) increases along the circumferential direction around the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58), the inner surface (34) of the circumferential wall (32) has a cross-sectional profile at least in the axial region of the lubricant collection volume (58), the cross-sectional profile having a constant radial distance (R) to the roller rotation axis (W) in a first circumferential extension region (U1) and a continuously increasing radial distance (R) to the roller rotation axis (W) in a second circumferential extension region (U2), the second circumferential extension region (U2) being adjacent to the first circumferential extension region (U1) in both circumferential directions up to a distance vertex (64), wherein at least a portion of at least one of the lubricant collection volumes (58) is formed in the region of the distance vertex (64).

10. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) increases along the circumferential direction around the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58), the inner surface (34) of the circumferential wall (32) has a cross-sectional profile at least in the axial region of the lubricant collection volume (58), the cross-sectional profile starting from the minimum distance (66) and increasing in radial distance (R) to the distance vertex (64) in both circumferential directions, wherein at least a portion of at least one of the lubricant collection volumes (58) is formed in the region of the distance vertex (64).

11. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) increases along the circumferential direction around the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58), the inner surface (34) of the circumferential wall (32) has a cross-sectional profile at least in the axial region of the lubricant collection volume (58), the cross-sectional profile having a radial distance (R) that continuously increases toward the roller rotation axis (W) from a minimum distance (66) to a distance vertex (64) in both circumferential directions, wherein at least a portion of at least one of the lubricant collection volumes (58) is formed in the region of the distance vertex (64).

12. The ground processing roller according to claim 10, characterized in that, The minimum distance (66) is opposite to the distance vertex (64) relative to the axis of rotation of the roller (W).

13. The ground processing roller according to any one of claims 1 to 3, characterized in that, When the inner surface (34) of the circumferential wall (32) is designed such that the radial distance (R) from the roller rotation axis (W) to the roller rotation axis (W) increases along the circumferential direction around the roller rotation axis (W) at the lubricant discharge port (56) open toward at least one of the lubricant collection volumes (58), the inner surface (34) of the circumferential wall (32) has a stepped radial extension (68) at least in the axial region of the lubricant collection volume (58) for providing at least a portion of at least one of the lubricant collection volumes (58).

14. The ground processing roller according to any one of claims 1 to 3, characterized in that, At least one support element (28, 30) having at least one lubricant outlet (56) is connected to the circumferential wall (32) by a weld (60, 62) that surrounds the roller's axis of rotation (W) in a circumferential direction.

15. The ground processing roller according to any one of claims 1 to 3, characterized in that, At least one support element (28, 30) having at least one lubricant outlet (56) is connected to the circumferential wall (32) by a weld (60, 62) that surrounds the roller in a circumferential direction without interruption.

16. The ground processing roller according to claim 14, characterized in that, The weld (60) is formed at least on the radially inner side of the circumferential wall (32), and the inner surface (34) of the circumferential wall (32) is located radially outer of at least one of the lubricant discharge ports (56) in the region of at least one of the lubricant discharge ports (56), and has a radial distance (D) from the lubricant discharge port (56).

17. The ground processing roller according to any one of claims 1 to 3, characterized in that, An unbalanced device (38) having at least one unbalanced mass block (54) capable of rotating about an unbalanced rotation axis is arranged in the lubricant holding volume (36).

18. The ground processing roller according to claim 17, characterized in that, At least one unbalanced mass block (54) is arranged on an unbalanced shaft (40), which is rotatably mounted relative to support elements (28, 30) in two axial end regions via bearing devices (44).

19. A ground processing machine, characterized in that, Includes at least one ground processing roller (22) according to any one of the preceding claims.

20. The ground processing machine according to claim 19, characterized in that, The ground processing machine is a ground compactor.

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