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DE-102024132842-A1 - Storage facility for a working tool of an agricultural machine

DE102024132842A1DE 102024132842 A1DE102024132842 A1DE 102024132842A1DE-102024132842-A1

Abstract

The invention relates to a bearing device (1) for a working tool (2), preferably a rolling tool (2), of an agricultural machine (3), comprising: a bearing bushing (100) for mounting on the working tool (2) in a mounting direction (M); a bearing bolt (200) for mounting on a frame part (31) of a machine frame (30) of the machine (3); a bearing unit (300) for rotatably mounting the bearing bushing (100) on the bearing bolt (200) about an axis of rotation (X); wherein the bearing bushing (100), the bearing bolt (200) and the bearing unit (300) are designed as a self-contained pre-assembled device for mounting on the working tool (2) and for arranging the bearing bolt (200) in a defined position in a mounting state of the bearing device (1) on the working tool (2). The invention further relates to a working tool (2) with at least one storage device (1), and an agricultural working machine (3) with such a working tool (2) and/or with at least one storage device (1).

Inventors

  • Benjamin Fuhlbrügge

Assignees

  • HORSCH MASCHINEN GMBH

Dates

Publication Date
20260513
Application Date
20241111

Claims (16)

  1. A bearing assembly (1) for a working tool (2), preferably a rolling tool (2), of an agricultural machine (3), comprising: • a bearing bushing (100) for mounting on the working tool (2) in a mounting direction (M); • a bearing pin (200) for mounting on a frame part (31) of a machine frame (30) of the machine (3); • a bearing unit (300) for rotatably mounting the bearing bushing (100) on the bearing pin (200) about an axis of rotation (X); wherein the bearing bushing (100), the bearing pin (200), and the bearing unit (300) are designed as a self-contained, pre-assembled assembly for mounting on the working tool (2) and for positioning the bearing pin (200) in a defined position in a mounting state of the bearing assembly (1) on the working tool (2).
  2. Storage facility (1) according to Claim 1 , wherein the defined position comprises a position and/or orientation concentric to an axis of rotation of the working tool (2) in order to distribute an occurring and/or to be transmitted load at least sectionally uniformly on the bearing unit (300) in an operating state of the bearing device (1), and/or wherein the defined position comprises a maximum extension of the bearing bolt (200) away from the working tool (2) in order to minimize or at least limit an occurring and/or to be transmitted load on the bearing bolt (200) in an operating state of the bearing device (1).
  3. Bearing device (1) according to one of the preceding claims, in which the bearing bushing (100) is configured in the assembly direction (M) to form a plug connection with a hollow shaft section (21) of the working tool (2), and in which the bearing unit (300) is arranged inside the bearing bushing (100) at a defined position in order to at least partially or completely enclose the bearing unit (300) along the assembly direction (M) with the hollow shaft section (21) in the assembly state.
  4. Bearing device (1) according to one of the preceding claims, wherein the bearing bushing (100) is designed in multiple parts and comprises a first bushing part (110) and a second bushing part (120), wherein the first bushing part (110) and the second bushing part (120) are configured to overlap at least partially in the assembly state along the assembly direction (M) in order to form a force-fit connection between a hollow shaft section (21) of the working tool (2) for receiving the bearing bushing (100) and each of the first bushing part (110) and/or the second bushing part (120).
  5. Storage facility (1) according to Claim 4 , wherein the first bushing part (110) and the second bushing part (120) are configured to form a conical connection in order to center the first bushing part (110) and/or the second bushing part (120) in the assembly state and to arrange the bearing bolt (200) in a defined orientation, wherein preferably the first bushing part (110) comprises an outer cone (111) and the second bushing part (120) comprises an inner cone (121) which is complementary to the outer cone (111), and/or wherein preferably the first bushing part (110) and the second bushing part (120) are configured in the assembly direction (M) to form at least one screw connection (122) with each other in order to establish and/or maintain a distance between the first bushing part (110) and the second bushing part (120).
  6. Bearing device (1) according to one of the preceding claims, whereby the bearing bushing (100) comprises a collar (104) which extends at least sectionally in a circumferential direction (U) and is configured to form a stop in the assembly direction (M) in order to arrange the bearing bushing (100) on the working tool (2) in a defined position in the assembly state.
  7. Storage facility (1) according to Claim 6 , wherein a sealing element (412) is arranged on the collar (104) on a first side which is associated with the working tool (2), which extends along the collar (104) in the circumferential direction (U), wherein the sealing element (412) is configured to form a gas-tight and/or liquid-tight connection between the collar (104) and the working tool (2) in the assembly state.
  8. Bearing device (1) according to one of the preceding claims, wherein the bearing unit (300) comprises at least one of the following elements: • a plurality of rolling elements (311, 312) for supporting a rotational movement of the bearing bushing (100) on the bearing pin (200), wherein the plurality of rolling elements (311, 312) are arranged between the bearing bushing (100) and the bearing pin (200) and are guided in a circumferential direction (U); • an inner ring (301) which is arranged on the bearing pin (200), and/or an outer ring (302) which is arranged inside the bearing bushing (100) on the bearing bushing (100), wherein the The inner ring (301) and/or the outer ring (302) are each configured to guide a plurality of rolling elements (311, 312) in a circumferential direction (U) in order to support a rotational movement of the bearing bushing (100) on the bearing pin (200).
  9. Bearing device (1) according to one of the preceding claims, whereby the bearing device (1) comprises a sealing unit (500) which is arranged between the bearing bushing (100) and the bearing pin (200) adjacent to the bearing unit (300) on one side of the bearing device (1) to prevent the ingress of a medium from the environment of the bearing device (1) into the bearing unit (300) in the assembled state, wherein the sealing unit (500) preferably comprises a cassette seal; and/or whereby the bearing bushing (100) comprises an external groove (109) which extends in a circumferential direction (U) and is configured to receive a sealing element (411), wherein the sealing element (411) is configured to form a gas-tight and/or a liquid-tight connection between the bearing bushing (100) and the working tool (2) in the assembled state.
  10. Storage facility (1) according to Claim 9 , wherein the bearing arrangement (1) comprises a cover disc (600) which is attached adjacent to the sealing unit (500) on the bearing bushing (100) or on the bearing bolt (200), wherein the cover disc (600) is configured to cover the sealing unit (500) in order to protect the sealing unit (500).
  11. Bearing device (1) according to one of the preceding claims, in which the bearing bolt (200) comprises a fastening element (107) for releasably fastening the bearing unit (300) to the bearing bolt (200), in which the fastening element (107) is arranged offset from an end face (101) of the bearing bushing (100) which is associated with the working tool (2) and/or is completely enclosed by the bearing bushing (100) in an axial direction along the axis of rotation (X), in which a bearing cover (108) is preferably arranged flush with the end face (101) on the bearing bushing (100), wherein the bearing cover (108) is configured to cover the bearing unit (300) and the bearing bolt (200) and preferably forms a gas-tight and/or a liquid-tight connection with the bearing bushing (100).
  12. Working tool (2) for an agricultural machine (3), wherein the working tool (2) comprises at least one bearing device (1) configured according to one of the preceding claims to rotatably mount the working tool (2) on the machine (3), wherein the working tool (2) is configured for working soil (B), the working of the soil (B) comprising at least one of the following: • Loosening the soil (B); • Leveling the soil surface of the soil (B); • Crushing soil components of the soil (B); • Pre-compaction of the soil (B); • Re-compaction of the soil (B); • Removal of an agricultural material from the soil (B); • Distribution of an agricultural material into the soil (B).
  13. Agricultural working machine (3) for cultivating soil (B) and/or for incorporating agricultural material into soil (B), comprising a machine frame (30) which includes at least one frame part (31) for mounting a working tool (2), whereby the at least one frame part (31) for releasably fastening a bearing pin (200) of a bearing device (1) of the working tool (2) comprises a mounting section (35) with a mounting element (36) which are configured to hold the bearing pin (200) by forming a frictional connection to the at least frame part (31), whereby the mounting element (36) is preferably arranged and/or configured to form an adjustable frictional connection in order to adjust a clamping force on the bearing pin (200).
  14. Working machine (3) after Claim 13 , wherein the mounting element (36) is designed as a separate individual part, wherein the mounting section (35) comprises a first bearing shell (32) and the mounting element (36) comprises a second bearing shell (33) which are arranged opposite each other in order to receive the bearing bolt (200) section by section.
  15. Working machine (3) after Claim 13 or 14 , wherein the assembly section (35) and the assembly element (36) are configured to form at least one tongue and groove connection (37, 38) in order to absorb a force acting axially to the bearing bolt (200) of the working tool (2) and to introduce it into the at least one frame part (31), wherein preferably the at least one tongue and groove connection (37, 38) is designed as a conical tongue and groove connection (37, 38) which preferably extends perpendicular to an extension of the bearing bolt (200).
  16. Working machine (3) according to one of the preceding Claims 13 until 15 , wherein the working tool (2) comprises a first and a second bearing device (1) which are arranged opposite each other, wherein the first bearing bolt (200) is held without preload on a first frame part (31) and the second bearing bolt (200) is held on a second frame part (31).

Description

The present invention lies in the field of agricultural engineering and relates to a storage device for a working tool, preferably a roller tool or a drum tool, of an agricultural machine. The present invention further relates to a working tool with at least one such storage device and to an agricultural machine with such a working tool and/or with at least one such storage device. Bearing systems for the rotatable storage of work tools of agricultural machinery are configured differently depending on their intended use and must meet a variety of different requirements, since they are frequently exposed to mechanical loads, for example in the form of shocks or vibrations, as well as wear-promoting environmental media, for example in the form of dust/dirt. For example, storage systems must be easy to assemble and disassemble. Furthermore, storage systems for agricultural machinery used for soil cultivation and/or incorporation of agricultural material into the soil must be particularly robust and have sufficient load-bearing capacity to ensure their proper function. At the same time, maintenance requirements, such as lubrication, should be kept to a minimum. Storage systems with rolling bearings are typically used to transmit the respective forces for the packer rollers of mobile combined tillage and seeding machines. Storage facilities for agricultural machinery are, for example, described in the following German publications No. DE 10 2021 132 469 A1 , DE 10 2019 201 353 A1 and DE 10 2016 107 948 A1 known. It is an object of the present invention to provide a bearing device for a working tool of an agricultural machine, which is improved, particularly with regard to its design, robustness, and ease of assembly/disassembly. Furthermore, it is an object of the present invention to provide a working tool with at least one such bearing device, as well as an agricultural machine with such a working tool and/or with at least one such bearing device. The problem is solved by the features of claims 1, 12 and 13. Further embodiments and applications of the present invention will become apparent from the dependent claims and are explained in more detail in the following description with partial reference to the figures. According to a first general aspect, the present invention relates to a bearing device for a working tool, preferably a rolling tool or a drum tool, of an agricultural machine, comprising: a bearing bushing for mounting, preferably for detachable fastening, on the working tool essentially in one mounting direction; a bearing bolt for mounting, preferably for detachable fastening, on a frame part of a machine frame of the machine; a bearing unit for rotatably mounting the bearing bushing on the bearing bolt essentially about an axis of rotation; wherein the bearing bushing, the bearing bolt and the bearing unit are designed as a self-contained (independent) pre-assembled device in order to be mounted on the working tool and to arrange the bearing bolt in a defined position in a mounting state of the bearing device on the working tool. The present invention provides a storage device in the form of a structurally independent unit, characterized by a comparatively simple and robust design, a compact construction, and simplified assembly and disassembly. The agricultural machine can be configured for cultivating the soil of an agricultural area and/or for incorporating an agricultural product, such as grain-like seeds, into the soil of an agricultural area. The working tool can be cylindrical, for example, in the form of a packer roller for re-compacting (pre-)cultivated soil. The bearing assembly according to the present invention is particularly advantageous due to its self-contained pre-assembly capability, allowing it to be manufactured completely independently and/or autonomously. Consequently, the bearing assembly also facilitates simplified replacement through a simplified disassembly process. The defined position can include a position and/or orientation that is essentially concentric to an axis of rotation of the working tool in order to distribute an occurring and/or to be transmitted load at least sectionally and essentially uniformly on the bearing unit in an operating state of the bearing device. Additionally or alternatively, the defined position can include a maximum extension of the bearing bolt away from the working tool in order to minimize or at least limit any load occurring on the bearing bolt in an operating state of the bearing device. The load can include shocks, vibrations, weight forces, and/or friction. The axis of rotation of the working tool can be a resulting axis and/or an axis of rotation resulting from at least one bearing arrangement in the assembled state and/or an idealized axis of rotation. The bearing arrangement can be configured to define an axis of rotation of the working tool. According to a further aspect of the present invention, it can be provided that the bear