Abstract
The disclosure relates to an assembly for a mower of a mowing or chopping machine, which comprises a tool carrier, which is formed with a carrier disk and which is configured to be mounted rotatably about an axis of rotation to a mower of a mowing or chopping machine; and cutting tools, which are each formed with a cutting blade located radially outwardly to the axis of rotation and a holding section located radially inwardly to the axis of rotation and which are detachably mounted to the carrier disk in an assigned carrier section, wherein the cutting tools are each mounted to the tool carrier by a mounting bolt, wherein the mounting bolt is in each case mounted to the cutting tools in a non-detachable manner. The disclosure furthermore relates to a replacement cutting tool and a mower for a mowing or chopping machine.
Claims
1. An assembly for a mower of a mowing or chopping machine, comprising: a tool carrier which is formed with a carrier disk and which is configured to be mounted rotatably about an axis of rotation to a mower of a mowing or chopping machine; and cutting tools, which are each formed with a cutting blade located radially outwardly with respect to the axis of rotation and a holding section located radially inwardly with respect to the axis of rotation and which are detachably mounted to the carrier disk in an assigned carrier section, wherein the cutting tools are each mounted to the tool carrier by a mounting bolt, which is in each case mounted to the cutting tools in a non-detachable manner, wherein in an unmounted position of the cutting tool, the mounting bolt is arranged displaceably relative thereto in an assigned opening of the cutting tool.
2. The assembly according to claim 1, wherein in the unmounted position of the cutting tool, the mounting bolt is arranged in the assigned opening of the cutting tool so as to be capable of being tilted relative to the cutting tool surface.
3. The assembly according to claim 1, wherein opposite top ends of the mounting bolt, between which a constriction is arranged, each has a top surface, which is larger than an opening surface of the opening, in which the mounting bolt is arranged.
4. The assembly according to claim 1, wherein the mounting bolt has a multi-part design.
5. The assembly according to claim 4, wherein at the mounting bolt, sleeve components are connected to one another in a non-detachable manner by means of a core pin.
6. The assembly according to claim 1, wherein the mounting bolt is mounted to the cutting tool in a non-detachable manner by means of a connection selected from the following group: rivet connection, weld connection, adhesive connection, thermoforming connection, cold-forming connection and solder connection.
7. The assembly according to claim 1, wherein in the assigned carrier sections, an elongated hole is formed, which runs radially to the axis of rotation and into which a mounting bolt, which is used to mount the cutting tool to the tool carrier, can be inserted in a region proximal to the axis of rotation, and the elongated hole has, at least in a region distal to the axis of rotation, engagement sections, which are formed along an elongated hole edge and which engage with the constriction on the mounting bolt when the mounting bolt, which is accommodated in the holding section of the cutting tool, is displaced from the proximal region of the elongated hole into the region of the elongated hole with the engagement sections during the mounting of the cutting tools.
8. The assembly according to claim 7, wherein projections located opposite one another and extending in the longitudinal direction of the elongated hole are formed in the assigned carrier sections, which projections delimit or essentially completely prevent a rotation of the cutting tool about the mounting bolt at least when the mounting bolt accommodated in the holding section of the cutting tool is arranged in a radially inner elongated hole half.
9. The assembly according to claim 8, wherein the elongated hole is formed on a tool carrier underside.
10. The assembly according to claim 9, wherein, on a tool carrier top side, a further elongated hole is formed, which overlaps with the elongated hole at least in sections and leadingly accommodates a bolt end of the mounting bolt.
11. The assembly according to claim 1, wherein the cutting tools are mounted to the tool carrier in a self-aligning manner in the mowing or cutting operation.
12. The assembly according to claim 1, wherein the cutting tools are mounted to the tool carrier in a self-securing manner in the use position in the mowing or cutting operation.
13. A replacement cutting tool for an assembly according to claim 1, wherein a mounting bolt is mounted to the cutting tool in a non-detachable manner.
14. A mower for a mowing or chopping machine, comprising a drive mechanism, which provides a rotating drive movement, and an assembly according to claim 1, which couples to the drive mechanism.
Description
DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0029] Further exemplary embodiments will be described in more detail below with reference to figures of a drawing, in which:
[0030] FIG. 1 shows a schematic illustration of an assembly for a mowing or chopping machine obliquely from above;
[0031] FIG. 2 shows a schematic illustration of the assembly from FIG. 1 obliquely from below;
[0032] FIG. 3 shows a further schematic illustration of the assembly from FIG. 1 obliquely from below, wherein a cutting tool is removed;
[0033] FIG. 4 shows a schematic perspective illustration of a cutting tool comprising a mounting bolt mounted thereto in a non-detachable manner;
[0034] FIG. 5 shows a schematic perspective illustration of the assembly comprising a cutting tool and a mounting bolt in section during the mounting of the mounting bolt and after conclusion of the mounting;
[0035] FIG. 6 shows a schematic perspective illustration of the assembly from FIG. 5 in section;
[0036] FIG. 7 shows a schematic illustration in section when the assembly comprising cutting tool and mounting bolt is mounted to a carrier disk;
[0037] FIG. 8 shows a schematic illustration of the assembly from FIG. 1 obliquely from below, wherein a newly mounted cutting tool with mounting bolt (see cutting tool left top) is arranged in an assigned tool carrier section;
[0038] FIG. 9 shows a schematic illustration of the assembly according to FIG. 1 obliquely from below, wherein, in contrast to FIG. 8, the newly mounted cutting tool is displaced into the use position;
[0039] FIG. 10 shows a schematic illustration of the assembly according to FIG. 1 obliquely from below, wherein the newly mounted cutting tool is rotated out of the use position; and
[0040] FIG. 11 shows schematic illustrations of a further embodiment of a cutting tool comprising a mounting bolt mounted thereto in a non-detachable manner from the front and in section, wherein a ring is arranged in the region of the constriction of the mounting bolt.
BRIEF DESCRIPTION OF THE DRAWINGS
[0041] FIG. 1 shows a schematic illustration of an assembly for a mowing or chopping machine comprising a tool carrier 1, which is formed with a carrier disk 2. The carrier disk 2 has a mounting section 3, which defines an axis of rotation, comprising bores 4, which serve to accommodate screws or bolts during the mounting of the tool carrier 1 in a mower.
[0042] Three carrier sections 5 are formed on the carrier disk 2 circumferentially at a distance of approximately 120, in which a cutting tool 6 is mounted in each case.
[0043] FIG. 2 shows a schematic illustration of the assembly from FIG. 1 obliquely from below. The cutting tools 6 each have a holding section 7, on which a cutting blade 8 is formed, which is located radially outwardly with respect to the axis of rotation. The cutting tools 6 are mounted in the assigned carrier section 5 with the help of a mounting bolt 9, which forms a local axis of rotation for the cutting tool 6. In mowing or chopping operation, the cutting tools align automatically in the manner illustrated in FIG. 2.
[0044] FIG. 3 shows the assembly from FIG. 1 obliquely from below. It follows from FIG. 3 that a flat component 10 comprising an elongated hole 11 is arranged in the carrier section 5, in which the cutting tools 6 are mounted, on the underside of the carrier disk 2, which flat component 10 is open on its end 12, which is proximal to the axis of rotation of the carrier disk 2.
[0045] FIG. 4 shows a schematic perspective illustration of the cutting tool 6 comprising the mounting bolt 9 mounted thereto. The mounting bolt 9 is mounted in an assigned opening 6a in a non-detachable manner.
[0046] FIG. 5 shows a schematic perspective illustration of the assembly comprising the cutting tool 6 and the mounting bolt 9 in section during the mounting of the mounting bolt 9 and after conclusion of the mounting (see the bottom illustration). The mounting bolt 9 is formed with an upper and a lower sleeve component 9a, 9b. The upper and the lower sleeve component 9a, 9b are located opposite one another in the region of the opening 6a, when the mounting bolt 9 is arranged essentially centrically in the opening 6a with respect to its longitudinal extension. On the upper and the lower sleeve component 9a, 9b, bolt top ends 9c, 9d are formed, the outer circumference of which is greater than an opening surface 6b of the opening 6a, so that the mounting bolt 9 is arranged in the opening 6a in a non-detachable manner after the mounting.
[0047] According to the illustration in FIG. 5, the opening surface 6b of the opening 6a is greater than the mounting bolt 9 in the middle region, so that the mounting bolt 9 is accommodated loosely in the opening 6a, for example can be tilted relative to its longitudinal axis.
[0048] An inner opening 9e of the upper and of the lower sleeve component 9a, 9b widens conically outwardly. A core pin (or bolt) 13 is introduced therein in a positive fitting manner (see bottom illustration in FIG. 5), in order to secure the mounting bolt 9 to the cutting tool 6 in a non-detachable manner.
[0049] FIG. 6 shows the assemblies from FIG. 5 from the front and in section.
[0050] FIG. 7 shows a schematic illustration in section, when the assembly comprising the cutting tool 6 and the mounting bolt 9 is mounted to the carrier disk 2.
[0051] During the mounting of the cutting tool 6 with the help of the mounting bolt 9 from FIGS. 4 to 6 (see FIG. 8 in contrast to FIG. 3), a section, which is introduced into a bore 15 in the cutting tool 6, of the mounting bolt 9, which is provided with a constriction 16 (see FIGS. 5 and 6) is inserted via the open proximal end 14 into the elongated hole 11, so that lateral engagement sections 17 of the elongated hole 11 engage with the constriction 16. FIG. 9 thereby shows a position of the cutting tool 6, in which the mounting bolt 9 is barely still arranged in or in front of the open proximal end 14 of the elongated hole 11.
[0052] FIG. 9 then shows the newly mounted cutting tool 6 in the use position. Based on FIG. 8, the cutting tool 6 was thus moved along the elongated hole 11 radially outwardly with respect to the axis of rotation of the carrier disk 2, wherein the mounting bolt 9 is thereby guided along the elongated hole 11. It follows from FIG. 1 in this context that a bolt end 18 of the mounting bolt 9, which is thicker with regard to the constriction 16, is thereby guided in a further elongated hole 19 on the top side of the carrier disk 2.
[0053] As follows in particular from FIGS. 8 and 9, projections 20 are formed, which are parallel to the side edges of the elongated hole 11 and which secure the cutting tool against unintentional ejection during operation. The holding section 7 of the cutting tool 6 is furthermore guided between the projections 20 during mounting/removal.
[0054] FIG. 10 shows a further schematic illustration of the arrangement according to FIG. 1 obliquely from below, wherein the newly mounted cutting tool 6 was turned out of the use position directed radially outwardly (see cutting tool left top in FIGS. 5 and 6) during mowing chopping, which can be caused in particular because the cutting tool 6 strikes an obstacle. A retention force had to be overcome for this purpose, which follows from the interaction of corners 21 of the projections 20, which corners 21 are distal to the axis of rotation of the carrier disk 2, and corner sections 22 of the holding section 7, which corner section 22 are proximal to the axis of rotation. It can alternatively be provided that such a retention or inhibition mechanism is not present, which can in particular be attained in that the distal corners 21 of the projections 20 and the proximal corners 22 of the holding section 7 of the cutting tools 6 are spaced apart when the cutting tool 6 is in the use position located radially outwardly with respect to the axis of rotation.
[0055] FIG. 11 shows schematic illustrations of a further embodiment of the cutting tool 6 with a mounting bolt 9 mounted thereto in a non-detachable manner from the front and in section, wherein a ring 30 is arranged in the region of the constriction 16 of the mounting bolt 9, which is embodied, for example, as a retaining ring. The ring 30 holds or secures the mounting bolt 9 in a direction transverse to the longitudinal direction of the cutting tool 6 in its relative position with respect to the cutting tool 6, for example in an asymmetrical position with respect to the opening 6a. A movement of the mounting bolt 9 in the direction transverse to the longitudinal direction of the cutting tool 6 can thereby be made possible within limits.
[0056] The ring 30 can be mounted to the mounting bolt 9 in a detachable or non-detachable manner. In the case of the shown example, the ring 30 is partially accommodated in an assigned groove 31, which extends circumferentially on the mounting bolt 9.
[0057] The features disclosed in the above description, the claims, and the drawing can be of importance for the realization of the different embodiments, both individually and in any combination.
