Asparagus ridge tiller

Abstract

Asparagus ridge tiller (1), which is intended for mounting on a tractor and has several pairs of milling discs (9, 10, 11), each of which is formed from two milling discs of uniform design, wherein the axes of rotation of all milling discs (9, 10, 11) are aligned parallel to the direction of travel of the tractor and - viewed in the direction of travel - the left milling discs (9, 10, 11) of all pairs of milling discs are combined to form a jointly rotatably driven first milling disc group (7), and the right milling discs (9, 10, 11) are combined to form a jointly rotatably driven second milling disc group (8), characterized in that each milling disc group (7, 8) comprises at least three milling discs (9, 10, 11) of different diameters (D9, D10, D11).

Description

[0001] The invention relates to an asparagus ridge tiller suitable for mounting on a tractor according to the preamble of claim 1.

[0002] A generic asparagus ridge tiller is known from DE 20 2015 007 385 U1. The known asparagus ridge tiller comprises a gearbox and four milling discs, each milling disc having a rotor disc and a plurality of beaters.

[0003] Another agricultural rotary tiller, specifically in the form of an asparagus ridge tiller, is described in German patent DE 90 01 047 U1. This is a rotary tiller with a gear drive, adjustable in height and width. DE 90 01 047 U1 specifies ridge heights between 30 and 60 cm and ridge widths between 38 and 48 cm. Other rotary tillers are, for example, capable of forming ridges with a height between 20 and 100 cm and a width between 38 and 120 cm.

[0004] The invention is based on the objective of providing an asparagus ridge milling machine that is further developed compared to the aforementioned prior art and which, while being easy to handle, is characterized by a particularly reliable and consistent processing mode.

[0005] This problem is solved according to the invention by an asparagus ridge milling machine with the features of claim 1.

[0006] The asparagus ridge tiller, based on a known design, features several pairs of milling discs, each pair consisting of two discs of a uniform design. The axes of rotation of all milling discs are aligned parallel to the tractor's direction of travel. Viewed in the direction of travel, the left-hand milling discs of each pair are grouped together to form a first milling disc group, driven by a common rotation, while the right-hand milling discs form a second milling disc group, driven by a common rotation in the opposite direction.

[0007] According to claim 1, each of the two milling disc groups comprises at least three milling discs of different diameters. It has been shown that this results in a further improved soil cultivation outcome compared to ridge tillers that operate with milling discs of a uniform size or with two different milling disc sizes. Naturally, the device according to the application, which is referred to without limitation as an asparagus ridge tiller, is also suitable for other applications in which parallel ridges need to be created, including gardening and landscaping.

[0008] Several possible configurations of the asparagus ridge tiller provide that the foremost milling disc in each milling disc group has the smallest diameter and the rearmost milling disc has the largest diameter. In particular, the milling disc group can comprise three milling discs of different sizes, wherein the diameter of the front milling disc is at least 1% and at most 20% smaller than the diameter of the middle milling disc (e.g., at least 2.5% and at most 7.5%), and the diameter of the rear milling disc exceeds the diameter of the middle milling disc by at least 1% and at most 20% (e.g., at least 2.5% and at most 7.5%).

[0009] Optionally, the front milling disc comprises a first group of beaters arranged in a first plane and a second group of beaters arranged in a parallel plane. This applies both to configurations of the asparagus ridge tiller in which each milling disc group comprises three milling discs and to configurations in which each milling disc group consists of more than three milling discs, for example, four milling discs arranged one behind the other in the direction of travel. In all these cases, the front milling disc, even if it comprises beaters arranged in multiple planes, is by definition considered to be exactly one milling disc. The front milling disc can be combined within the same milling disc group with milling discs that each comprise beaters arranged exclusively in a single plane.

[0010] According to a possible further development, the asparagus ridge tiller has two service hatches, each providing access to a milling disc group. These service hatches can be positioned in front of a rear frame and simultaneously between a top link frame and a lower link frame, with the lower link frame being wider than the top link frame. The width is to be measured transversely to the direction of travel. Regarding the design, particularly of the service hatches, solutions known in principle from DE 20 2024 106 664 U1 can be used.

[0011] Each service flap of the asparagus ridge tiller, as specified in the application, can be inclined, for example, by 45° ± 20° relative to a plane in which the axes of rotation of the two milling disc groups lie when closed. This assumes that the pivot axis of the service flap is aligned parallel to the axes of rotation of the milling disc groups.

[0012] An embodiment of the invention is explained in more detail below with reference to a drawing. The drawing shows, in a simplified form: Fig. 1. A front view of an asparagus ridge tiller designed for mounting on a tractor. Fig. 2 a milling disc group of the asparagus ridge cutter after Fig. 1 facing against the direction of travel, Fig. 3 the milling disc group after Fig. 2 in side view, Fig. Four components of the asparagus ridge cutter in perspective view.

[0013] A single asparagus ridge tiller, designated as 1, is designed for mounting on a tractor (not shown). In the arrangement according to Fig. Figure 1 shows the tractor, complete with asparagus ridge tiller 1, driving towards the viewer. Regarding the basic design and function of the asparagus ridge tiller 1, reference is made to the cited state of the art.

[0014] The asparagus ridge cutter 1 has a supporting frame 2, the structure of which consists in particular of Fig. 4 emerges. The frame 2 comprises a top link frame 3, a lower link frame 4, and a rear frame 5. Service flaps 6 are pivotally connected to the frame 2 in the area of ​​the top link frame 3.

[0015] The service hatches 6 provide access to each of the milling disc groups 7 and 8 of the asparagus ridge tiller 1. Regarding the design of the milling disc groups 7 and 8, reference is made to the Fig. Reference is made to sections 1 to 3. Each milling disc group 7, 8 has a central axis that is spaced parallel to and spaced apart from the central axis of the entire asparagus ridge cutter 1. In the exemplary embodiment, milling disc group 7 is arranged on the left side and milling disc group 8 on the right side of the asparagus ridge cutter 1 – viewed in the direction of travel.

[0016] Each milling disc group 7, 8 consists of three milling discs 9, 10, 11 arranged one behind the other in the direction of travel, where 9 designates a first, front milling disc, 10 a second, middle milling disc, and 11 a third, rear milling disc. A common shaft, driven via a gearbox of the asparagus ridge cutter 1, and connecting the milling discs 9, 10, 11, is designated 12. The milling discs 9, 10, 11 have different diameters D9, D10, D11, with the frontmost milling disc 9 having the smallest diameter D9 and the rearmost milling disc 11 having the largest diameter D11. In the illustrated embodiment, the diameter D9 of the front milling disc 9 is at least 1% and at most 20% smaller than the diameter D10 of the middle milling disc 10. The diameter D11 of the rear milling disc 11 exceeds the diameter D10 of the middle milling disc 10 by at least 1% and at most 20%.

[0017] Each milling disc 9, 10, 11 has a rotor disc 13 to which several beaters 14 are attached. In the case of the middle milling disc 10, all beaters 14 lie in a single plane. Similarly, in the rear milling disc 11, the beaters 14 are arranged in one and the same plane to which the central axis of the shaft 12 forms a surface normal. Six beaters 14 are attached to the rotor disc 13 of the middle milling disc 10. The same applies to the rear milling disc 11.

[0018] In contrast to the middle and rear milling discs 10, 11, the front milling disc 9 has two groups 15, 16 of beaters 14. Each of these groups 15, 16 is formed from six beaters 14 mounted at equal angular intervals, i.e., at 60° intervals, the beaters 14 of the first group 15 lying in a plane parallel to the plane in which the beaters 14 of the second group 16 are arranged.

[0019] In total, milling disc group 7, like milling disc group 8, has twelve beaters 14 of the front milling disc 9 and six beaters 14 each of the middle milling disc 10 and the rear milling disc 11, for a total of 24 beaters 14. The front milling disc 9 of the left milling disc group 7, together with the front milling disc 9 of the right milling disc group 8, forms a first, front milling disc pair. Similarly, the two middle milling discs 10 and the two rear milling discs 11 form a second, middle, and a third, rear milling disc pair, respectively. The three milling disc pairs, formed from the six milling discs 9, 10, and 11, ensure the uniform shaping of a dam in the space designated DR, located centrally between milling disc groups 7 and 8. Reference symbol list 1 asparagus ridge cutter 2 frames 3 top link frames 4 lower link frames 5 Rear frame 6 Service hatch 7 first milling disc group 8 second milling disc group 9 first, front milling disc 10 second, middle milling disc 11 third, rear milling disc 12 Shaft of the milling disc group 13 Rotor disc 14 rackets 15 first group of rackets 16 second group of rackets D9, D10, D11 Diameter of the milling discs 9, 10, 11 DR space in which the asparagus dam is to be formed QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2015 007 385 U1

[0002] DE 90 01 047 U1

[0003] DE 20 2024 106 664 U1

[0010]

Claims

[1] Asparagus ridge tiller (1), which is intended for mounting on a tractor and has several pairs of milling discs (9, 10, 11), each of which is formed from two milling discs of uniform design, wherein the axes of rotation of all milling discs (9, 10, 11) are aligned parallel to the direction of travel of the tractor and - viewed in the direction of travel - the left milling discs (9, 10, 11) of all pairs of milling discs are combined to form a first milling disc group (7) which is driven together in rotation, and the right milling discs (9, 10, 11) are combined to form a second milling disc group (8) which is driven together in the opposite direction, characterized by , that each milling disc group (7, 8) comprises at least three milling discs (9, 10, 11) of different diameters (D9, D10, D11). [2] Asparagus ridge milling machine (1) according to claim 1, characterized by, that the milling disc (9) furthest forward in the direction of travel has the smallest diameter (D9) and the milling disc (11) furthest rear has the largest diameter (D11). [3] Asparagus ridge milling machine (1) according to claim 2, characterized by , that the milling disc group (7, 8) comprises three milling discs (9, 10, 11) of different sizes, wherein the diameter (D9) of the front milling disc (9) is at least 1% and at most 20% smaller than the diameter (D10) of the middle milling disc (10) and the diameter (D11) of the rear milling disc (11) exceeds the diameter (D10) of the middle milling disc (10) by at least 1% and at most 20%. [4] Asparagus ridge milling machine (1) according to claim 3, characterized by , that the front milling disc (9) comprises a first group (15) of beaters (14) which is arranged in a first plane, and a second group (16) of beaters (14) which is arranged in a plane parallel to this. [5] Asparagus ridge milling machine (1) according to claim 3 or 4, characterized by , that the middle milling disc (10) as well as the rear milling disc (11) each comprise beaters (14) arranged exclusively in a single plane. [6] Asparagus ridge milling machine (1) according to one of claims 1 to 5, characterized in that two service flaps (6) through which a milling disc group (7, 8) is accessible. [7] Asparagus ridge milling machine (1) according to claim 6, characterized by , that the service flaps (6) are arranged in front of a rear frame (5), between a top link frame (3) and a lower link frame (4), wherein the lower link frame (4) is wider than the top link frame (3). [8] Asparagus ridge milling machine (1) according to claim 6 or 7, characterized by, that each service flap (6) is inclined by 45° ± 20° relative to a plane in which the axes of rotation of the two milling disc groups (7, 8) lie when closed, wherein a pivot axis of the service flap (6) is aligned parallel to the said axes of rotation.

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