GB2135563A

GB2135563A - Soil cultivation implement with non-rolling trailer

Info

Publication number: GB2135563A
Application number: GB08404117A
Authority: GB
Inventors: Joseph-Hermann Siebers
Original assignee: Lemken GmbH and Co KG
Current assignee: Lemken GmbH and Co KG
Priority date: 1983-02-25
Filing date: 1984-02-16
Publication date: 1984-09-05
Also published as: GB8404117D0; FR2541554A1; GB2135563B; FR2541554B1; DE3306650A1; DE3306650C2

Abstract

For heavy soils a soil cultivation implement is proposed which, as well as the packer roll 1 connectable with the plough, also comprises a non-rolling further soil cultivation implement 5, preferably a harrow, which is connected with the packer roll through a draw rod 6 pivotably fitted thereto. The harrow is connected with the articulation allocated to the packer roll through an interposed linkage or quadrilateral linkage allowing vertical adjustment. This articulation consists of a king bolt 10 with sleeve and mounting, with which the links of the linkage engage. The linkage formed as quadrilateral linkage comprises the drawer rod 6, a link 20, 23 of variable length, and a diagonal link 22 of variable length. Alternative link arrangements may include a leaf spring (35). <IMAGE>

Description

SPECIFICATION Soil cultivation implement with non-rolling trailer The invention relates to a soil cultivation implement, preferably a packer roll usable as accessory to the plough, having one or more roll bodies or packer rings arranged one beside and/or one behind the other in the direction of travel, with a joint for the attachment of a trailer.

Such soil cultivation implements are guided in ploughing beside the plough on the ploughed field in such a way that the sub-soil is reconsolidated and the most finely crumbling surface possible is produced. The packer roll, which consists of several roll bodies or packer rings arranged one beside the other, is equipped for this purpose with catch hooks so that the tractor with the plough can be turned and reversed in the region of the headland independently of the additional soil cultivation implement. In the case of heavy and sticky soils the earth clods are broken up and the sub-soil is rnconsolidated with the packer roll. To improve the working effect, roller tillers have also already been attached to the packer roll in order thus to obtain a seed bed extensively suitable for subsequent sowing.The roller tiller is secured through a joint to the packer so that it must follow the movements of the packer. The unsatisfactory working effect of roller tillers, especially in the case of heavy or sticky soils, is disadvantageous since they block and then become useless.

Therefore as a rule it is necessary to re-cultivate the soil subsequently in an additional operation with harrows or similar implements. Blocking of the packer is prevented for example by cleaning chains which are arranged between the packer rings. Such a cleaning device cannot be provided in combination with roller tillers, especially with bar-type or cage-type roller tillers.

The invention is based upon the problem of producing a soil cultivation implement which can be used without problem even with heavy and sticky soils and which simplifies soil cultivation, especially seed bed preparation.

According to the invention the problem is solved in that a non-rolling further soil cultivation implement is made to follow, by means of a draw rod pivotably attached to the packer roll.

The association of a non-rolling soil cultivation implement makes it possible to achieve a substantially better working effect, so that as a rule even in the case of heavy and sticky soils a further re-cultivation of the field is eliminated.

Surprisingly it is possible, especially in combination with half-turn ploughs, to attach a pivotably arranged, non-rolling soil cultivation implement to a soil cultivation implement consisting of roll bodies or packer rings. These non-rolling soil cultivation implements do not hinder a packer roll during the phase of turning about if they are secured and guided pivotably on the packer roll in a suitable manner through a draw rod.

A soil cultivation implement with especially good working effect is achieved according to the invention if the non-rolling soil cultivation implement is a one-piece or multi-part harrow.

Irrespective of the condition and formation of the soil, harrows have a good working effect, and especially due to the combination with the packer there is no fear of blocking of the harrow and thus becoming ineffective.

In manoeuvring the tractor with the attached plough and the packer it is necessary that the harrow should move backwards during the turnabout operation. In order to avoid digging in of the harrow end in this operation it is provided according to the invention that the harrow is secured through chains or similar connecting elements to a carrier linkage consisting or connected with the draw rod. It is advantageous in this case that the chains with the carrier linkage and the harrow form a downwardly narrowing trapezium. By means of this suspension the harrow end can move practically out of the ground in reversing of the soil cultivation implement during the turnabout phase, and can slide over the ground so that the mobility of neither the packer roll itself nor of the harrow is impaired and "digging in" of the harrow end is reliably prevented.

The draw rod or the carrier linkage comprising the draw rod is connected with the packer through an articulation. An especially favourable formation of the articulation is to be seen according to the invention in that it comprises an approximately vertically placed king bolt. The king bolt can be arranged especially favourably in position in the case of packers consisting of packer rings. In this case the king bolt is expediently arranged off centre to ensure that the harrow following the packer roll always runs on the area already worked by the packer.

A favourable guidance of the following harrow and a secure connectoin of the two implements with one another, without them negatively influencing one another, is provided according to the invention by the fact that the harrow is connected with the packer roll through an adjustable linkage. The linkage is here expediently formed as a quadrilateral linkage so that a favourable stabilisation of the trailing soil cultivation implement immediately results or can be adjusted.

An expedient and simple adjusting device with which the position of the trailing harrow in relation to the ground can be corrected in each case is achieved by a quadrilateral linkage of which one link is variable in length and which is made adjustable in angle as a whole. By means of the link of variable length the angle of the carrier linkage carrying the harrow can be corrected, while by means of the quadrilateral linkage of adjustable angle the horizontal position, that is the distance of the carrier linkage from the ground, can itself be examined and readjusted.

The upper link of the quadrilateral linkage is expediently here of variable length and preferably formed as a turnbuckle, while in addition a diagonal link is provided by means of which the angular adjustablility of the quadrilateral linkage is given.

The connection of the articulation with the draw rod of the harrow is to be formed expediently in a manner in which the king bolt carries a sleeve which comprises a mounting with bores. The mounting can here be a part of the sleeve or attached to the sleeve or fitted upon the sleeve, so that a favourable arrangement of the quadrilateral linkage is also provided. An articulated connection of the mounting with the parts of the quadrilateral linkage is provided by means of the bores.

In non-sticky soil conditions it is entirely possible to arrange one or more rolling accessories after the harrow or the carrier linkage.

Roller tillers or other implements of roll form are suitable as appropriate rolling accessories. They are connected with the harrow and/or the carrier linkage and can at the same time take over a carrier and guidance function for the harrow, so that under some circumstances it is possible to dispense with the stabilising quadrilateral linkage.

Especially when the diagonal link by means of which the quadrilateral linkage is adjustable in angle is responsible only for the task of guiding the harrow as regards depth, it is possible to provide as diagonal link a spring element which preferably serves as depth-setting element and in the case of undulatory soil conditions ensures the most regular possible pressure-loading upon the harrow or upon the roller tiller. It is further provided as a form of guidance that for favourable ground adaptation of the harrow or the roller tiller a slot provided in one of the links or in the mounting or carrier linkage serves as free-motion device.

The invention is especially distinguished in that optimilisation of the soil cultivation and also simplification in the use of the implement according to the invention are possible. Seed bed preparation can be substantially improved, especially in the case of heavy and sticky soils, because harrows together with packer rolls come into use so that the favourable working effect of the harrows can develop advantageously likewise in this kind of soil cultivation. It is furthermore advantageous that with simple measures the trailing soil cultivation implement, that is the harrow, can be adjusted and set so that in each case it assumes the most favourable position in relation to the ground or in the ground, without at the same time impairing the manner of operation and mobility of the packer roll.

Further details and advantages of the object of the invention appear from the following description of the accompanying drawings, in which preferred examples of embodiment with the details and individual parts necessary are represented and wherein:- Figure 1 shows a lateral elevation of the soil cultivation implement consisting of packer roll and harrow, Figure 2 shows a form of embodiment of the soil cultivation implement with additionally following roller tiller, Figure 3 shows a further form of embodiment of the soil cultivation implement in lateral elevation, Figure 4 shows a soil cultivation implement according to Figure 1 with quadrilateral linkage and leaf spring, Figure 5 shows a soil cultivation implement according to Figure 1 with a quadrilateral linkage and turnbuckle as diagonal link and Figure 6 shows a soil cultivation implement according to Figure 1 with a quadrilateral linkage with a compression spring as diagonal link.

The packer roll 1 as shown in Figure 1 and the following Figures is one comprising two roll bodies 2, 3 arranged one behind the other. These roll bodies 2, 3 consist of individual packer rings and an articulation 4 is provided, preferably off centre on the rod linkage connecting them, by means of which articulation the further trailing soil cultivation implement 5 is attached.

In the example of embodiment as illustrated, as further non-rolling soil cultivation implement 5 a harrow 7 is attached with the draw rod 6 to the packer roll 1. The harrow 7 is limitedly movably suspended through chains 8, 9 on the carrier linkage 15, the carrier linkage, the chains and the harrow forming a downwardly narrowing trapezium. "Digging in" of the harrow end in the reversing of packer roll 1 and harrow 7 is prevented. So that the chains 8, 9 may be detached easily, chain locks 1 6 are provided.

The articulation 4 comprises a king bolt on to which a sleeve 11 is fitted. This sleeve 11 has a mounting 12 with bores 13, 14 with which the individual links of a linkage 1 8 engage. The linkage 1 8 is here formed as a quadrilateral linkage 19, the sleeve 11 and the draw rod 6 together with the upper link 20 and the lower link 21 forming the quadrilateral linkage.

While the lower link 21 is of rigid formation, the upper link 20 is made variable in length, preferably as a turnbuckle. The diagonal link 22 is also a turnbuckle which engages for one part with the lower link 21 and for the other on the mounting 12. The angle of the carrier linkage 15 and thus of the harrow 7 in relation to the ground can be adjusted by means of the turnbuckle 23 or the upper link 20, while the distance of the carrier linkage 15 from the ground is adjusted by means of the diagonal link 22.

In the form of embodiment as represented in Figure 2 the adjustability is provided by means of the turnbuckles 26, 27, this form of embodiment dispensing with a quadrilateral linkage in the actual sense. Instead a carrier linkage 1 5 of angle form and a correspondingly formed draw rod 6 are provided which are connected on the one hand through an articulation 28 and on the other through the turnbuckle 27.

Here again the harrow 7 is suspended by chains. The articulation 4 contains a bolt 10 carrying a sleeve 11 with a mounting 1 2 serving for the attachment of the turnbuckle 26.

On the rear end of the carrier linkage 1 5 there is arranged a further rolling accessory 31, by means of an attachment 29 or a mounting, the engagement of which implement in the soil is limited by means of the compression spring 30.

By means of an adjustable compression spring 30 the pressure upon the rolling accessory 31 can be influenced.

Figure 3 shows a third possibility of attaching a harrow 7 to a packer roll 1. The angle which the carrier linkage 15 and thus the harrow 7 assumes in relation to the ground is here again adjusted by means of the turnbuckle 26, while the engagement of the harrow in the ground is influenced by means of the compression spring 33, while at the same time the action of the articulation 28 can be influenced by means of the compression spring 33. Here again a rolling accessory 32 is likewise attached to the carrier linkage 1 5.

Figure 4 shows a packer with harrow which are connected through a quadrilateral linkage 1 9 having a diagonal link formed as leaf spring 35.

Here again influencing of the ground clearance of the carrier linkage 1 5 and the harrow 7 is provided by means of the fixing 36. The leaf spring 35 is secured to the lower link 21 and to the mounting 12 of the sleeve 11, while the upper link 20 is made of variable length.

According to Figure 5 the diagonal link 22 is provided with a slot and thus serves as free motion device, while the upper link 20 and lower link 21 are formed as represented in Figure 4.

Finally Figure 6 shows a quadrilateral linkage 19 in which a compression spring 42 is used as diagonal link. This compression spring 42 is allocated to a carrier rod 41 which possesses threading so that adjustment of the compression spring is possible by actuation of the nut 38 and/or nut 40. While on actuation of the nut 38 the effective length of the carrier rod 41 is influenced, on actuation of the nut 40 this length remains unchanged, so that by this means only the pressure of the compression spring 42 is varied.

Claims

1. Soil cultivation implement, preferably packer roll usable as accessory to the plough, having one more roll bodies or packer rings arranged one beside and/or one behind the other in the direction of travel, and an articulation for the attachment of a trailer, characterised in that a non-rolling further soil cultivation implement (5) is arranged to follow by means of a draw rod (6) pivotably fitted on the packer roll (1).

2. Soil cultivation implement according to Claim 1, characterised in that the articulation (4) comprises an approximately vertical king bolt (10).

3. Soil cultivation implement according to Claims 1 and 2, characterised in that the trailing soil cultivation implement (5) is connected with the packer roll (1) through an adjustable linkage (18).

4. Soil cultivation implement according to Claim 3, characterised in that the linkage (18) is formed as quadrilateral linkage (19).

5. Soil cultivation implement according to Claims 3 and 4, characterised in that the quadrilateral linkage (19), one link (20) of which is of variable length, is made adjustable in angle.

6. Soil cultivation implement according to Claim 5, characterised in that the upper link (20) of the quadrilateral linkage (19) is made variable in length, preferably as turnbuckle (23), and in addition a diagonal link (22) is provided.

7. Soil cultivation implement according to Claims 2 to 6, characterised in that the king bolt (10) carries a sleeve (11) comprising a mounting (12) with openings (13, 14).

8. Soil cultivation implement according to Claim 1, characterised in that the non-rolling soil cultivation implement (5) is a one-piece or multipart harrow (7).

9. Soil cultivation implement according to Claims 1 and 8, characterised in that the harrow (7) is secured by means of chains (8, 9) on a carrier linkage (15) comprising or connected w.th the draw rod (6).

1 0. Soil cultivation implement according to Claim 9, characterised in that the harrow (7) is fitted limitedly movably in between the chains (8, 9).

11. Soil cultivation implement according to Claim 1, characterised in that one or more rolling accessories (31, 32) are arranged to follow the harrow (7) and the carrier linkage (15).

1 2. Soil cultivation implement according to Claims 5 and 6, characterised in that a compression spring (42) or a leaf spring (35) is provided as diagonal link (22).

1 3. Soil cultivation implement according to Claims 3 to 6, characterised in that at least one of the articulation points of the links (20, 21, 22) or (26, 27) comprises a slot (37) serving as free motion device, preferably an attachment point of the diagonal link (22).

1 4. A soil cultivation implement substantially as described with reference to any one of the embodiments of Figures 1-6 of the accompanying drawings.