Share system and share point for use in a share system for soil cultivation

Abstract

Share tip (10) for use in a share system (34) for soil cultivation, comprising at least - a front side (14) and a back side (16), - a cutting edge (18) at a free end and / or at a narrow side of the share tip (10) and - a fastening area (22) for fastening the share tip (10) to a share handle (36), characterized in that at least one shielding element (32) protruding from the back (16) of the share tip (10) is provided or arranged on the back of the share tip (10) above the cutting edge (18).

Description

[0001] The present invention relates to a share tip for an agricultural soil cultivation device according to the features of independent claim 1 and to a share system, in particular for agricultural soil cultivation according to the features of independent claim 16.

[0002] Various tillage machines and / or tillage implements are used in agriculture for soil cultivation. Such tillage machines are typically equipped with a frame on which a variety of share systems are mounted. Each share system comprises a share handle with an attached, detachable share tip. This share tip can engage the soil and loosen it when the share handle is lowered during field travel.

[0003] EP 3 235 358 A1 describes a share tip for use in a share system for soil cultivation. The share tip has a first region with a cutting edge, which cutting edge is arranged at a free end in the longitudinal direction of the share tip. A second region adjoins the first region in the longitudinal direction of the share tip, which second region forms a running surface that is at least partially curved. A third region adjoins the second region in the longitudinal direction of the share tip, which third region forms a fastening region. The fastening region comprises bores through which fastening means, for example in the form of screws, can be passed through and inserted, so that the share tip can be secured to a share handle.A guide plate can also be provided on the front of the share handle, which at least partially covers the fastening area at the front. In this way, the guide plate can help protect the fastening elements on the front of the share tip from wear and / or damage during soil cultivation or while guiding the share tip in the soil. However, this solution has proven disadvantageous because the fastening elements are exposed at the rear when the share tip is attached to the share handle. During soil cultivation, however, these exposed ends of the fastening elements slide through the soil, resulting in enormous wear on the fastening elements.

[0004] EP 3 248 449 A1 describes a spring tine for an agricultural soil tillage implement with a free end pointing diagonally downward and forward in the direction of travel, which serves as a fastening area for a soil-furrowing engagement element. The engagement element can be designed, for example, as a shovel-shaped or V-shaped share tip or the like. The share tip can also have a fastening area corresponding to the fastening area of ​​the spring tine, through which fastening areas fasteners can be inserted so that the share tip can be secured to the engagement element. In this solution, too, the fastening means are exposed on the back of the share tip, which are particularly susceptible to wear when sliding through the soil.

[0005] DE 10 2013 102 420 A1 describes a cultivator share for attachment to a tool carrier, in particular a tine of an agricultural soil tillage machine. The tine has a fastening part through which screw receptacles pass. By means of these screw receptacles, the tine can be mounted to the frame of the soil tillage machine. The tine further comprises a support part to which the share tip, a guide element, and two side share wings are attached. The share tip and the guide element each comprise screw receptacles through which fastening means are passed in order to attach the share tip and the guide element to the share handle. The guide element additionally comprises a screw receptacle, which is covered in the tool feed direction by a cover section of the share tip.The disadvantage, however, is that even with this solution, the fasteners for attaching the share tip and the guide element to the share handle are exposed on the back of the share handle or share tip. Thus, these fasteners are also subject to enormous wear during soil cultivation or field work.

[0006] The exposed fastening elements such as screws and / or nuts on the back result in a multitude of disadvantages and problems. For example, the nuts which are screwed onto the exposed end of the fastening elements can become loose. This can result in the fastening screws and in particular the share tips being lost during field work. Furthermore, the wear and tear on the fastening elements that occurs during field work can damage the threads of the fastening screws, making it impossible to loosen or open the nuts. In addition to wear and tear on the fastening elements, the respective share handles can also wear out. This enormous wear and tear sometimes requires regular replacement and regular inspection of the fastening elements and / or share handles, which is time-consuming and costly.

[0007] The invention is therefore based on the object of providing a share point or share system in which the disadvantages mentioned in the prior art can be at least largely overcome by at least largely protecting the exposed ends of the fastening means and / or the free end of the share stem from wear. At the same time, the share system should have a simple design.

[0008] These objects are achieved by a share tip for use in a share system for soil cultivation having the features in claim 1 and by a share system for soil cultivation having the features in claim 16. Further advantageous embodiments and developments of the invention are specified in the respective dependent claims.

[0009] To achieve the stated object, the invention proposes a share point for use in a share system for soil cultivation. The share point according to the invention has a front side and a rear side. In particular, the share point can form a base body whose front and rear sides are each flat, so that a cuboid-shaped and flat base body with, in particular, a rectangular outline or, optionally, a trapezoidal outline is formed. This refers to a base body which, in a side view, runs at least partially in a straight line or rectangular shape, wherein a top view preferably shows a rectangular or trapezoidal contour of the base body, and wherein the side view normally shows a uniform or constant material thickness over the longitudinal extent of this base body.The share tip is typically located on one narrow side of the base body, which appears rectangular in plan view, with the share tip encompassing the entire narrow side and thus providing a sharp-edged and resistant engagement area for soil cultivation.

[0010] Optionally or in an alternative embodiment, the share tip according to the invention can also have a front side that is at least partially concave and a rear side that is at least partially convex. In this alternative variant, the share tip can thus form a base body whose front side is concave and whose rear side is convex. This refers to a base body that is curved at least partially in a side view, wherein a top view preferably shows a rectangular or trapezoidal contour of the base body, and wherein the side view normally shows a uniform or constant curvature over the longitudinal extent of this base body and a material thickness that is preferably uniform or slightly reduced towards the tip.The share tip is typically located on one narrow side of the base body, which appears rectangular or trapezoidal when viewed from above, with the share tip encompassing the entire narrow side and thus providing a sharp-edged and resistant engagement area for soil cultivation.

[0011] It should be noted at this point that the share point according to the invention described here can optionally also be part of a so-called duckfoot share, in which the base body is arrow-shaped or triangular due to its design and therefore has two wings, so that the share point, as described here, has two sections arranged at an angle to one another. In this respect, such a duckfoot share does not, strictly speaking, have a cuboid-shaped or slightly curved base body with a rectangular outline, but rather an arrow-shaped shape. Nevertheless, the features and basic principles of the invention can also be applied to duckfoot shares, so that the share point according to the invention can also be part of a duckfoot share.

[0012] The share tip thus comprises or offers a cutting edge, which is preferably provided or arranged at a free end of the share tip or on one of the narrow sides of the base body of the share tip. In the case of a duckfoot share, the share tip naturally comprises two cutting edges that are arranged at an angle to one another and abut one another at their tips. The cutting edge can be rounded and / or pointed and / or oblique. The cutting edge can also be assigned a cutting element, by means of which the engagement of the share tip in the ground is facilitated. The cutting element can in particular be formed from a suitable hard metal or similar material. The cutting edge can also be at least largely protected from wear by the cutting element.The cutting edge can, in particular, be designed such that it has a clearance angle on the rear side with respect to the soil to be worked, which clearance angle can preferably be between at least 20° and at most 70°. The cutting edge, in particular with the cutting element fitted, can then be guided obliquely in the soil. The clearance angle can reduce the force required when penetrating and / or guiding the share tip into the soil. The share tip can also be guided more effectively in the soil and loosen the soil, in particular the earth.

[0013] The share tip further comprises a fastening region, in particular for fastening the share tip to a share handle or to another suitable anchorage or another suitable holder or support. Such a support can be, for example, a cultivator tine or similar soil cultivation device or tool. The fastening region can preferably be provided starting from the free end of the share tip with the cutting edge at the opposite end of the share tip or preferably approximately in the middle of the share tip, i.e. the fastening region can preferably be provided along the longitudinal direction starting from the cutting edge approximately in the upper third of the share tip.

[0014] In particular, it can be provided that the fastening area comprises at least one bore through which at least one fastening element, such as a fastening screw with associated fastening nut, can be passed and / or inserted, so that the share tip can be secured, in particular, to a share handle or a cultivator tine, since the share tip according to the invention can in particular be a cultivator tip or the like, but not, for example, a processing or engagement section of a ploughshare or similar tool. As mentioned above, duckfoot shares are also intended to fall under the term "share tip" used here.

[0015] At this point it should be noted that the share handle can be designed to correspond to the flat, largely flat or even convex back of the share tip and can accordingly also be flat or can optionally have the same curvature and / or bend, so that a flat contact of the base body against the corresponding mating surface of the support, the share handle or cultivator tine is ensured. Corresponding to the at least one bore in the fastening area of ​​the share tip, the share handle can also comprise a fastening area with at least one bore, which bores are preferably aligned with one another during assembly, so that at least one fastening means can be inserted through the at least one bore in the share tip and through the at least one bore in the share handle.However, it makes sense to provide two such fastening holes, which are arranged at a sufficient distance from each other, so that a reliable and twist-proof fastening of the share tip to a corresponding counter surface is possible.

[0016] The at least one fastening means can be designed, for example, in the form of a screw or the like. The at least one fastening means, in particular the screw, can be guided and / or inserted through the at least one bore and through the at least one corresponding bore on the share handle such that it comprises an exposed end or such that the end of the at least one fastening means is exposed. In order to additionally secure or fix the share tip, in particular on the share handle, at least one nut can be mounted on the exposed end of the fastening means, in particular the screw.

[0017] Additionally and / or optionally, the fastening area can comprise at least one pin, by means of which pin the share tip can be secured to the share handle. In particular, for example, the at least one pin can be guided through and / or locked into a corresponding bore and / or receptacle or the like in the fastening area of ​​the share handle. The at least one pin can be designed such that, when the share tip is secured to the share handle, it has an exposed end, or such that, when the share tip is secured to the share handle, the free end of the at least one pin is exposed. In order to additionally secure or fix the share tip, in particular to the share handle, at least one nut or the like can be mounted on the exposed end of the fastening means, in particular on the at least one pin.Optionally, the pin can be provided with an external thread so that the share tip can be anchored by screwing on a fastening nut.

[0018] According to the invention, at least one shielding element protruding from the back of the share tip is provided or arranged on the back of the share tip above the cutting edge.

[0019] In principle, it is also possible for the at least one shielding element protruding from the flat or convexly curved rear side of the share tip to be arranged on the rear side of the share tip between the cutting edge and the fastening area and in the longitudinal direction of the share tip, starting from the cutting edge, at least approximately in front of the fastening area and / or close to the fastening area.

[0020] The at least one shielding element can help to protect the rearwardly exposed end of the at least one fastening means and / or the at least one nut as well as the free end of the share handle from wear and / or damage while the share tip slides in the ground. This is particularly evident in the fact that the wear effects and / or phenomena and sometimes considerable abrasive effects or abrasive impacts that typically occur when the share tip is guided in the ground no longer act directly on the exposed end of the at least one fastening means and / or on the at least one nut and / or on the free end of the share handle, but can be largely shielded by the at least one shielding element and thus compensated and / or absorbed.In particular, it can also be provided that the at least one shielding element creates an opening in the soil when the share tip slides in the soil, so that the exposed end of the fastening means and / or the at least one nut no longer slide along the soil, whereby the wear on the exposed end of the fastening means and / or on the at least one nut can be reduced.

[0021] It can be provided that the at least one shielding element is provided in the longitudinal direction of the share tip, starting from the cutting edge, directly below the at least one bore of the fastening region.

[0022] In principle, it would also be conceivable to provide the rear side of the blade tip with at least two or more shielding elements. For example, the number of shielding elements could be equal to the number of holes in the mounting area, with the shielding elements each being arranged below the respective hole in the longitudinal direction of the blade tip, starting from the cutting edge.

[0023] Furthermore, it can be provided that the at least one shielding element projects beyond and / or covers the fastening area, in particular the exposed end of the at least one fastening means and / or the at least one nut, at least in sections.

[0024] Optionally, the at least one shielding element can completely project over and / or cover the fastening region, in particular the exposed end of the at least one fastening means and / or the at least one nut. In this embodiment, the at least one shielding element can, for example, comprise at least one recess into which the exposed end of the at least one fastening means and / or the at least one nut can be received, i.e. the exposed end of the at least one fastening means and / or the at least one nut can be completely protected by the at least one shielding element, since they are no longer directly exposed to the forces during penetration and / or sliding of the share tip in the ground.

[0025] Furthermore, it can be provided that the at least one shielding element has a width that at least approximately corresponds to the width of the share tip or the width of the share stem, or preferably at least to the width of the at least one fastening means and / or the at least one nut. The at least one shielding element is preferably designed such that it does not impair soil cultivation and does not increase the required tensile force for the share tip.

[0026] Furthermore, in a variant of the share tip according to the invention, it can be provided that the at least one shielding element has a height or elevation relative to the rear side which approximately corresponds to the thickness of a section or head of the at least one fastening means protruding beyond the rear side of the share tip. If necessary, the shielding element can also be designed somewhat higher than the at least one section or head of the at least one fastening means protruding beyond the rear side of the share tip. In this way, it is reliably prevented that the earth moving along the shielding element and the fastening means during a soil cultivation process leads to a gradual abrasive removal of the screw head or other fastening means, thus ensuring a long service life and high wear resistance of the detachable fastening elements of the share tip.

[0027] Furthermore, it can be provided that the at least one shielding element is designed to widen conically in the longitudinal direction of the share tip, starting from the cutting edge and moving toward the fastening area. The conically widening shape of the at least one shielding element ensures optimal soil flow, as the soil can slide over the shielding element without forming lumps and / or without being blocked. The conically widening shape of the at least one shielding element can also reduce the resistance during penetration and / or sliding of the share tip in the soil.

[0028] Furthermore, it can be provided that an angle of the conical widening can be at least approximately equal to the clearance angle which is formed on the cutting edge.

[0029] Optionally, the at least one shielding element can comprise a V-shaped or U-shaped contour in the longitudinal direction of the blade tip, starting from the cutting edge and moving toward the fastening area. In this way, the exposed end of the at least one fastening means and / or the at least one nut can also be covered at least partially on the side surfaces, thereby further minimizing wear at the exposed end of the at least one fastening means and / or the at least one nut.

[0030] Furthermore, it can be provided that the at least one shielding element is formed from a solid material. This can in particular also include a design variant of the share tip in which the at least one shielding element is formed integrally or inseparably with the share tip and in a common manufacturing step. Metal pieces produced by forging are particularly suitable as the base body of the share tip according to the invention, as these allow the entire component, including the arranged shielding element, to be manufactured from a single piece. An important reason for the preferred use of this manufacturing process is that the cutting edges, which are made in particular from hard metal or a hard material, can be better soldered to forged parts, whereas a durable and resilient soldered connection is more difficult to produce with cast components.

[0031] In order to further reduce and / or minimize wear on the at least one shielding element, it can be provided that the at least one shielding element is equipped with at least one hard metal element or a hard material element or the like and / or comprises at least one abrasion-resistant coating. The at least one abrasion-resistant coating can be, for example, zinc-nickel, chemical nickel, chromium or chromium layer systems, hard silver, combination layers or anodic layers such as anodized layers, or the like. As already mentioned above in connection with the optionally soldered tip or cutting edge, this optional hard metal element or hard material element can in particular be soldered to the shielding element.

[0032] According to an alternative embodiment, it can also be provided that the share tip with the at least one shielding element is designed in several parts. In such a multi-part embodiment, both the share tip and the shielding element can each be designed as a forged or cast part, so that the at least one shielding element can be soldered to the share tip or attached and fastened in some other way. In a multi-part embodiment, the share tip and the at least one shielding element can be at least two separate components. Preferably, the at least one shielding element can be attached and / or fastened to the back of the share tip by means of a material-to-material connection. The material-to-material connection can be, for example, a welded, adhesively bonded and / or soldered connection.

[0033] Furthermore, it can be provided that the share tip as such comprises a one-piece or integrally formed base body, which can particularly mean production as a one-piece cast or forged part. At least one hard metal element or several hard metal elements can be provided on the front side of the share tip, in particular on the front side of the base body, to reduce wear on the share tip.

[0034] Optionally or additionally, at least one abrasion-resistant coating can be provided on the front side of the share tip, in particular on the front side of the share tip base body, which can also reduce wear on the share tip. The at least one abrasion-resistant coating can be, for example, zinc-nickel, chemical nickel, chromium or chromium coating systems, hard silver, combination coatings, or anodic coatings such as anodizing, or the like.

[0035] The at least one hard metal element or the plurality of hard metal elements and / or the at least one abrasion-resistant coating on the front side of the share tip can serve to cover the fastening area on the front side and to protect it from wear and / or damage.

[0036] The invention further relates to a share system, particularly for agricultural soil cultivation, comprising at least one share handle and a share tip detachably mounted on the share handle. The share tip comprises a base body with a front and a rear side. As already mentioned above, the front and rear sides can each be flat or possibly curved, in which case the front side can typically be concave and the rear side convex.

[0037] The share tip further comprises a cutting edge, which is preferably provided at a free end of the share tip. The cutting edge can be rounded and / or pointed and / or angled. The cutting edge can also be assigned a cutting element, by means of which the engagement of the share tip in the ground is facilitated. The cutting element can be made of hard metal or the like. The cutting edge can also be at least largely protected from wear by the cutting element. The cutting edge can in particular be designed such that it has a clearance angle on the rear side with respect to a soil to be worked, which clearance angle can preferably be between at least 20° and at most 70°.

[0038] As mentioned above, duckfoot shares are also considered to fall under the term "share point" used here, so the special features described above also apply to them. The shielding element provided according to the invention can be used just as effectively with duckfoot shares as with other types of share points, such as simple tine shares, etc.

[0039] The share tip further comprises a fastening region, in particular for fastening the share tip to the share stem. The fastening region can preferably be provided at the opposite end of the share tip from the cutting edge or preferably approximately centrally of the share tip, i.e., the fastening region can preferably be provided along the longitudinal direction of the share tip, starting from the cutting edge, approximately in the upper third of the share tip.

[0040] It can be provided that the fastening area comprises at least one bore through which at least one fastening element can be passed and / or inserted, so that the share tip can be secured in particular to the share handle. At this point it should be noted that the share handle can be designed to correspond to the flat or partially or completely convex back of the share tip and can accordingly have the same contour or curvature and / or bend. Corresponding to the at least one bore in the fastening area of ​​the share tip, the share handle can also comprise a fastening area with at least one bore, which bores are preferably aligned with one another during assembly, so that fastening means can be inserted through the at least one bore in the share tip and through the at least one bore in the share handle.

[0041] The at least one fastening element can be designed, for example, in the form of a screw or the like. The at least one fastening element, in particular the screw, can be guided and / or inserted through the at least one bore and through the at least one corresponding bore on the share handle in such a way that it comprises an exposed end or that the end of the at least one fastening element is designed to be exposed. In order to additionally secure or fix the share tip, in particular on the share handle, at least one nut can be mounted on the exposed end of the fastening element, in particular on the screw.

[0042] According to the invention, at least one protruding shielding element is provided on the back of the share tip above the cutting edge.

[0043] Optionally, it can also be provided that the shielding element protruding from the rear side of the share tip is arranged on the rear side of the share tip between the cutting edge and the fastening area, in particular in the longitudinal direction of the share tip, starting from the cutting edge, at least approximately in front of the fastening area and / or close to the fastening area.

[0044] Optionally, it can be provided that the at least one shielding element is provided or positioned directly on the fastening area.

[0045] Furthermore, it can be provided that the at least one shielding element projects beyond and / or covers the fastening area, in particular the exposed end of the at least one fastening means and / or the at least one nut, at least in sections.

[0046] Optionally, the at least one shielding element can completely extend over and / or cover the fastening area, in particular the exposed end of the at least one fastening means and / or the at least one nut. In this embodiment, the at least one shielding element can comprise at least one recess into which the exposed end of the at least one fastening means and / or the nut can be received.

[0047] With regard to all the above-mentioned aspects and embodiments of the share point according to the invention for use in a share system for agricultural soil cultivation, it should be noted at this point that these aspects and characteristics are equally part of the share system according to the invention or can be applied to it. Therefore, if specific aspects and variants of the share point and / or share system are mentioned at any point in the above description, these aspects and embodiments are to be read and understood as referring equally to the share point and the share system.

[0048] In the following, exemplary embodiments will explain the invention and its advantages in more detail with reference to the accompanying figures. The relative sizes of the individual elements in the figures do not always correspond to the actual sizes, as some shapes are simplified and others are enlarged relative to other elements for better illustration. Fig. 1A and Fig. 1B shows a perspective view of an embodiment of a share tip. The Fig. Figure 1C shows a top view of the Fig. 1A and Fig. 1B shown share tip. The Fig. 1D shows a rear view of the Fig. 1A to 1C shown share tip. The Fig. 2A shows a perspective view of an embodiment of a blade system. The Fig. 2B shows a side view of the Fig. 2A shown blade system. The Fig. 3 shows in a detailed view the Fig. 2A and Fig. 2B mounted share tip on the share handle.

[0049] Identical reference numerals are used for identical or equivalently functioning elements of the invention. Furthermore, for the sake of clarity, only reference numerals necessary for the description of the respective figure are shown in the individual figures. The illustrated embodiments merely represent examples of how the share tip and share system according to the invention can be designed and do not represent a definitive limitation.

[0050] The Fig. 1A to 1D show various views of an embodiment of a share tip 10. The share tip 10 comprises a base body 12, the front side 14 of which is concave and the rear side 16 of which is convex. The base body 12 of the share tip 10 is a one-piece component.

[0051] The Fig. However, the embodiment shown in Figures 1A to 3 with the curved design of the share tip 10 is by no means intended to be limiting. Thus, the share tip 10 can optionally also be flat and have a flat front side 14 and a flat rear side 16, forming a regular cuboid-shaped base body 12.

[0052] A rounded cutting edge 18 is provided at a free end of the share tip 10. The cutting edge 18 is particularly designed such that it has a clearance angle on the rear side with respect to a soil (not shown here) to be worked, which clearance angle can preferably be between at least 20° and at most 70°.

[0053] To facilitate the penetration of the share tip 10 into the ground or soil, a cutting element 20, which is designed as a hard metal element, is assigned to the cutting edge 18. The cutting element 20 is L-shaped, so that it is provided at least in sections on the front side 14 and at least in sections on the rear side 16 of the share tip 10, in particular on the cutting edge 18. The cutting element 20 is attached to the cutting edge 18 by means of a material-to-material connection, for example in the form of welding, gluing, and / or soldering.

[0054] The share tip 10 further comprises a fastening area 22, in particular for fastening the share tip 10 to a share handle 36 (cf. Fig. 2A and Fig. 2B). The fastening area 22 is located approximately centrally or in the upper third of the share tip 10, starting from its longitudinal direction.

[0055] The fastening area 22 comprises two bores 24, 24', each equipped with threads not shown here. Fasteners 26, 26', for example in the form of screws 30, 30', are inserted into the two bores 24, 24', so that the share tip 10 is fixed to the share stem 36 (see Fig. 2A and Fig. 2B).

[0056] On the rear side 16 of the share tip 10, between the cutting edge 18 and the fastening region 22, in particular in the longitudinal direction of the share tip 10, starting from the cutting edge 18, a shielding element 32 protruding from the rear side 16 is provided at least approximately in front of the fastening region 22 and / or close to the fastening region 22. In particular, the shielding element 32 is arranged on the share tip 10 in such a way that, in the longitudinal direction of the share tip 10, starting from the cutting edge 18, it lies directly below the bore 24.

[0057] According to the Fig. 1A to 1C, the shielding element 32 is designed to widen conically in the longitudinal direction of the share tip 10, starting from the cutting edge 18 in the direction of the fastening area 22, in particular in the direction of the bore 24, i.e. the width of the shielding element 32 increases in the longitudinal direction of the share tip 10, starting from the cutting edge 18 in the direction of the fastening area 22. The conical design of the shielding element 32 ensures optimal soil flow, since the soil can slide over the shielding element 32 without forming lumps and / or without being dammed.

[0058] Preferably, an angle of the conical widening of the blocking element 32 is at least approximately equal to the clearance angle formed on the cutting edge 18 of the share tip 10.

[0059] The maximum width of the shielding element 32 corresponds at least approximately to the width of the rear side 16 of the share tip 10. The maximum width of the shielding element 32 is selected such that the shielding element 32 is at least wider than the bores 24, 24'. However, the shielding element 32 is designed such that it does not impair soil cultivation and does not increase the required pulling force for the share tip 10.

[0060] The share tip 10 with the shielding element 32 is a forged part, forming a single-piece component. The shielding element 32 is therefore integrated into the rear side 16 of the share tip 10 and does not constitute a separate component.

[0061] In the Fig. 2A and Fig. 2B shows various views of a share system 34 or a spring tine 38, in which the share tip 10 is fixed to a share handle 36. The spring tine 38 comprises a share handle 36. At one end of the share handle 36, a fastening unit 40 is provided, by means of which the share handle 36 can be mounted and / or pre-tensioned on a frame (not shown here) of an agricultural soil cultivation machine. This area of ​​the share handle 36 is also referred to as the clamping section 44. Spring coils 42 follow the clamping section 44 in the longitudinal direction of the share handle 36.

[0062] Towards the further free end of the share handle 36, the latter is curved at least in sections, the bend of which preferably corresponds to the shape and / or curvature of the share tip 10. A share tip 10 is detachably mounted on the free end of the share handle 36, which share tip 10 has a structure according to the Fig. 1A to 1E shown share tip 10.

[0063] Accordingly, the share tip 10 comprises a one-piece base body 12 with a concave front side 14 and a convex rear side 16. A rounded cutting edge 18 is provided at a free end of the share tip 10, which has a clearance angle on the rear side with respect to the soil to be worked. The clearance angle is preferably between at least 4° and 10°, so that the share tip 10 can be guided obliquely in the soil. Furthermore, the cutting edge 18 can be equipped with an L-shaped cutting element 20, which is made, for example, from a hard metal or the like.

[0064] The share tip 10 comprises a fastening area 22 for fastening the share tip 10 to the share handle 36. The fastening area 22 is located at the opposite end of the share tip 10, or in the center, from the cutting edge 18, and comprises two bores 24, 24'. Corresponding to the fastening area 22 of the share tip 10, the share handle 36 also comprises a fastening area 46 at its free end 28, which includes two bores not shown here. When mounting the share tip 10 on the share handle 36, the bores 24, 24' of the share tip 10 and the bores of the share handle 36 must each be aligned so that they are flush with one another. A fastening means 26, 26' in the form of screws 30, 30' can be inserted through the aligned bores 24, 24', so that the share tip 10 is fixed to the share spool 36.The screws 30, 30' are received in the bores 24, 24' of the share tip 10 and the bores of the share stem 36 in such a way that they each form an exposed end 48, 48' at the rear. A nut 50, 50' is provided or mounted on each of these exposed ends 48, 48' for additional fixation.

[0065] In order to protect the exposed ends 48, 48' of the screws 30, 30' as well as the nuts 50, 50' placed thereon from wear, the share tip 10 comprises a shielding element 32 protruding from the rear side 16.

[0066] The position and arrangement of the shielding element 32 is particularly evident from the Fig.3. The shielding element 32 is arranged, in particular, on the rear side 16 of the share tip 10 such that, in the longitudinal direction of the share tip 10, starting from the cutting edge 18, it is located at least approximately in front of the fastening region 22 and / or close to the fastening region 22. In particular, the shielding element 32 is arranged, in the longitudinal direction of the share tip 10, starting from the cutting edge 18, directly below the bore 24.

[0067] The shielding element 32 is designed to widen conically in the longitudinal direction of the share tip 10, starting from the cutting edge 18 in the direction of the fastening region 22, in particular in the direction of the bore 24, i.e. the width of the shielding element 32 increases in the longitudinal direction of the share tip 10, starting from the cutting edge 18 in the direction of the fastening region 22. Preferably, an angle of the conical widening of the blocking element 32 is preferably at least approximately equal to the clearance angle present at the cutting edge 18 of the share tip 10.

[0068] The maximum width of the shielding element 32 corresponds at least approximately to the width of the share tip 10. The maximum width of the shielding element 32 is selected such that the shielding element 32 is at least approximately the same width as the share stem 36 or at least as wide as the screws 30, 30' and the nuts 50, 50'.

[0069] Optionally, the shielding element 32 can be equipped and / or provided with hard metal elements (not shown here) and / or with an abrasion-resistant coating (not shown here). The at least one abrasion-resistant coating can be, for example, zinc-nickel, chemical nickel, chromium or chromium coating systems, hard silver, combination coatings, or anodic coatings such as anodizing, or the like.

[0070] It should also be noted that the share tip 10 according to the invention described here can optionally also be part of a so-called duckfoot share (not shown here), in which the base body is arrow-shaped or triangular due to its design and therefore has two wings, so that the share tip, as described here, has two sections arranged at an angle to one another. In this respect, such a duckfoot share does not, strictly speaking, have a cuboid-shaped or slightly curved base body 12 with a rectangular outline, but rather an arrow-shaped or triangular shape. However, the features and basic principles according to the invention can also be applied to duckfoot shares, in which a shielding element 32, as described here, can be usefully used in the same way. Thus, the share tip 10 according to the invention can also be part of a duckfoot share.

[0071] The invention has been described with reference to a preferred embodiment. However, it is conceivable for a person skilled in the art that modifications or variations of the invention can be made without departing from the scope of the following claims. List of reference symbols 10 share tip 12 basic bodies 14 Front 16 Back 18 cutting edge 20 cutting element 22 Attachment area of ​​the share tip 24 bore 24' bore 26 fasteners 26' fasteners 28 Free end of the share handle 30 screw 30' screw 32 Shielding element 34 share system 36 share handle 38 spring tines 40 fastening unit 42 spring coils 44 clamping section 46 Attachment area of ​​the share handle 48 Exposed end of the fastener 48' Exposed end of fastener 50 mother 50' mother

Claims

[1] Share point (10) for use in a share system (34) for soil cultivation, comprising at least - a front side (14) and a back side (16), - a cutting edge (18) at a free end and / or at a narrow side of the share tip (10) and - a fastening area (22) for fastening the share tip (10) to a share handle (36), characterized by that on the back of the share tip (10) above the cutting edge (18) at least one shielding element (32) protruding from the back (16) of the share tip (10) is provided or arranged. [2] Share tip according to claim 1, wherein the fastening region (22) comprises at least one bore (24) through which bore (24) at least one fastening means (26) can be passed, so that the share tip (10) can be fixed in particular to a share handle (36). [3] Share tip according to claim 1 or 2, wherein the fastening region (22) comprises at least one pin, by means of which pin the share tip (10) can be fixed in particular to the share handle (36). [4] Share tip according to claim 2 or 3, wherein the shielding element (32) is provided or arranged on the rear side of the share tip (10) between the cutting edge (18) and the fastening region (22), in particular in the longitudinal direction of the share tip (10) starting from the cutting edge (18) at least approximately in front of the fastening region (22) and / or close to the fastening region (22). [5] Share tip according to claim 2 or 3, wherein the at least one shielding element (32) is provided in the longitudinal direction of the share tip (10) starting from the cutting edge (18) immediately below the at least one bore (24) and / or immediately adjacent to the pin of the fastening region (22). [6] Share tip according to claim 2 or 3, wherein the at least one shielding element (32) projects beyond and / or covers the fastening region (22), in particular the at least one fastening means (26) and / or the at least one pin, at least in sections. [7] Share tip according to one of the preceding claims, in which the at least one shielding element (32) has or comprises a width which corresponds at least approximately to the width of the share tip (10) or the width of the share handle (36) or the width of the at least one fastening means (26). [8] Share tip according to one of the preceding claims, in which the at least one shielding element (32) has a height or elevation relative to the rear side (16) which approximately corresponds to the thickness of a section or head of the at least one fastening means (26) projecting beyond the rear side (16) of the share tip (10). [9] Share tip according to one of claims 1 to 8, in which the at least one shielding element is designed to widen or widen conically in the longitudinal direction of the share tip (10) starting from the cutting edge (18) in the direction of the fastening region (22). [10] Share tip according to claim 9, wherein an angle of the conical widening or broadening is at least approximately equal to a clearance angle formed on the cutting edge (18) of the share tip (10). [11] Share tip according to one of the preceding claims, in which the at least one shielding element (32) has a V-shaped or a U-shaped contour in the longitudinal direction of the share tip (10) starting from the cutting edge (18) in the direction of the fastening region (22). [12] Share tip according to one of the preceding claims, in which the at least one shielding element (32) is formed as a solid material and / or is formed integrally with the share tip. [13] Share tip according to one of claims 1 to 11, wherein the share tip (10) with the at least one shielding element (32) is formed in several parts. [14] Share tip according to one of the preceding claims, in which the at least one shielding element (32) is equipped with at least one hard metal element and / or comprises at least one abrasion-resistant coating. [15] Share tip according to one of the preceding claims, in which the at least one shielding element (32) comprises at least one recess. [16] Share system (34) for agricultural soil cultivation, comprising at least one share handle (36) and a share tip (10) detachably mounted on the share handle (36), wherein the share tip (10) - a front side (14) and a back side (16), - a cutting edge (18) at a free end of the share tip (10), - and a fastening area (22) for fastening the share tip (10) to the share handle (36), characterized by that at least one shielding element (32) projecting on the back (16) of the share tip (10) is provided above the cutting edge (18). [17] Agricultural soil tillage implement comprising a share system (34) according to claim 16, wherein the at least one shielding element (32) projects beyond and / or covers the fastening region (22) at least in sections.

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