US-12622349-B2 - Roll segment, roll and agricultural crop transporting and/or cleaning device

Abstract

A roll segment is provided for a roll of an agricultural crop transporting and/or cleaning device which has a plurality of rolls, which are oriented at least substantially transversely to the transport direction and which are preferably formed as spiral rolls in succession in the transport direction, and via which, during operation, the crops are transported for cleaning and/or transport purposes. The roll segment has a longitudinal axis which, during operation, corresponds to a rotation axis and, for the purpose of forming the roll with at least one further roll segment extending in the direction of the longitudinal axis during operation, has at least at one end at least one first connection element which is designed for connection to a further connection element of the further roll segment.

Inventors

• Marcus Hartau
• Ludger Kolbeck

Assignees

• Grimme Landmaschinenfabrik SE & Co. KG

Dates

Publication Date

20260512

Application Date

20210729

Priority Date

20200731

Claims (20)

1. 1 . A roll segment for a roll of an agricultural crop transporting device, the roll segment defining a rotational axis and comprising: a first connection element extending axially from a first end and defining an inner ramped shoulder; a second connection element extending axially from a second end; and a third connection element extending axially from the second end concentrically within the second connection element, wherein the first connection element is complementary to second and third connection elements of an additional roll segment, the first connection element being shaped to matingly fit between the second and third connection elements of the additional roll segment, the third connection element is complementary to a first connection element of the additional roll segment, the third connection element being shaped to matingly engage an inner ramped shoulder of the additional roll segment.
2. 2 . The roll segment of claim 1 , wherein the first connection element includes a collar extending circumferentially about the rotational axis and a latching lug extending radially outwardly from the collar.
3. 3 . The roll segment of claim 1 , wherein the second connection element includes a first latching lug extending radially inwardly.
4. 4 . The roll segment of claim 3 , wherein the second connection element includes an outer jacket extending axially from the second end.
5. 5 . The roll segment of claim 4 , wherein the first latching lug extends radially inwardly from the outer jacket.
6. 6 . The roll segment of claim 3 , wherein the third connection element includes an inner jacket extending axially from the second end and a second latching lug extending radially outwardly from the inner jacket.
7. 7 . The roll segment of claim 6 , wherein the second latching lug is matingly complementary to the inner ramped shoulder of the additional roll segment.
8. 8 . The roll segment of claim 1 , wherein a connecting surface disposed on a front face of the first end is substantially perpendicular to the rotational axis.
9. 9 . The roll segment of claim 1 , wherein a cylindrical wall defines a channel.
10. 10 . The roll segment as claimed in claim 9 , wherein a web encloses the channel.
11. 11 . The roll segment of claim 10 , wherein the web extends in one or more of a linear manner and a curved manner.
12. 12 . The roll segment of claim 9 , wherein the channel is filled with one or more of air and a filling that is less stiff than the first, second, and third connection elements.
13. 13 . The roll segment as claimed in claim 1 , further including: a cylinder element defining a non-circular recess configured to receive a drive shaft.
14. 14 . The roll segment of claim 1 , wherein the second and third connection elements define a groove that extends circumferentially about the rotational axis.
15. 15 . A roll for an agricultural crop transporting and/or cleaning device, the roll defining a rotational axis and comprising: a first roll segment having a first connection element extending axially from a first end, the first connection element having an inner ramped shoulder; and a second roll segment having second and third connection elements extending axially from a second end, wherein the first connection element is configured to removably matingly fit between the second and third connection elements, and the third connection element is configured to removably matingly engage the inner ramped shoulder.
16. 16 . The roll segment of claim 15 , wherein the first roll segment and the second roll segment are configured to join via an interference fit.
17. 17 . The roll of claim 16 , wherein regions of the first and second roll segments with differently compressed material alternate along external contours of the first and second roll segments.
18. 18 . The roll as claimed in claim 15 , wherein respective first and second conveying webs of the first and second roll segments extend along respective first and second outer faces of the first and second roll segments, and the first and second conveying webs transition into one another, adjoin one another along the respective first and second front faces, and are angled relative to a plane substantially perpendicular to the rotational axis.
19. 19 . The roll of claim 15 , wherein the first and second roll segments are formed as a spiral roll in succession with an additional roll in a transport direction.
20. 20 . An agricultural crop transporting and/or cleaning device comprising: a drive shaft; and a roll driven by the drive shaft, the roll defining a rotational axis and including a first roll segment having a first connection element extending axially from a first end, the first connection element having an inner ramped shoulder, and a second roll segment having second and third connection elements extending axially from a second end, wherein the first connection element is configured to removably matingly fit between the second and third connection elements, and the third connection element is configured to removably matingly engage the inner ramped shoulder.

Description

CROSS REFERENCE This application claims priority to PCT Application No. PCT/EP2021/071316, filed Feb. 3, 2022, which itself claims priority to German Patent Application No. 20 2020 104448.6, filed Jul. 31, 2020, the entireties of both of which are hereby incorporated by reference. FIELD OF THE INVENTION The present invention relates to a roll segment for a roll of an agricultural crop transporting and/or cleaning device which has a plurality of rolls, which are oriented at least substantially transversely to the transport direction and which are preferably formed as spiral rolls in succession in the transport direction, and via which, during operation, the crops are transported for cleaning and/or transport purposes, wherein the roll segment has a longitudinal axis which, during operation, corresponds to a rotation axis and, for the purpose of forming the roll with at least one further roll segment extending in the direction of the longitudinal axis during operation, has at least at one end at least one first connection element which is designed for connection to a further connection element of the further roll segment. BACKGROUND OF THE INVENTION Such an object which is described in EP 3 064 283 A2, for example, has proved disadvantageous in that dirt penetrates into the respective connecting regions between the roll segments. This makes it more difficult for the respective roll segments to be able to be released from one another or from a drive shaft of a crop transporting and/or cleaning device. Moreover, the penetrated dirt ensures an increase in the diameter of the connecting region, since due to the dirt the connection elements of adjacent roll segments no longer bear against one another correctly. This in turn leads to increased wear on the roll segments. BRIEF SUMMARY It is the object of the present invention to improve an object of the type in question with regard to these drawbacks. According to the invention it is provided that, when viewed in a direction parallel to the longitudinal axis, the roll segment has at least one and preferably at least two undercut first end regions, at least one thereof being formed by the first connection element. The result of both a variant with one undercut first end region and a variant with two undercut first end regions is that it is more difficult to produce a connection with an adjoining roll segment, which can have a complementary shaping, for forming a roll. This drawback, however, is remedied by producing an improved connection of the respective roll segments. For example, the undercut end region is formed by a thickening of the connection element which is formed transversely to the direction of the longitudinal axis. The first connection element forms at least one of the first undercut end regions so that in a simple case only the first connection element is changed relative to the previously known roll segments and a relatively similar shaping can be present, at least regarding the first end region. There can be a plurality of first connection elements which can be arranged so as to be uniformly distributed over the circumference of the roll segment on the front face. The first connection element can also be a collar circulating on the front face and at least in some portions in the circumferential direction, with a latching lug forming the above-described thickening. It goes without saying that this latching lug can be identified as such at least in a sectional view and forms a latching edge circulating in the circumferential direction. Moreover, the first connection element can also have further latching lugs or thickenings which, when connected, can be inserted into a groove of a further roll segment known from the prior art, in order to achieve an improved seal. When connected, one respective thickening results in the material being compressed, the production of a gap in the case of an external load, due to the crops to be transported, being able to be at least partially prevented thereby since the compressed material expands. The formation of at least two undercut first end regions by, for example, two thickenings present in a longitudinal section ensures that the connection is correspondingly doubled. In particular, the first connection element is formed by a collar running over the entire circumference on the front face along the circumference of the roll segment-a protruding part of the roll segment. Generally parts of the roll segment which are present on the front face and which serve for connecting to and/or bearing against a further roll segment are denoted as end regions, wherein the front face is the side which faces a further roll segment when connected. Preferably, when viewed in a direction parallel to the longitudinal axis, the roll segment is provided at the other end, i.e. at the other end on the front face, at least with one, and preferably at least with two, undercut second end regions, at least one thereof being formed by a second