The present application claims priority under 35 U.S.C. ยง 119(a) of Austria Patent Application No. A 50602/2019 filed Jul. 2, 2019, the disclosure of which is expressly incorporated by reference herein in its entirety.
The invention relates to a share for a soil cultivation implement for cultivating soil, wherein the share is bent and has at least one mounting hole for receiving a fastener, and wherein the share is tipped on an upper side with at least one carbide insert.
In agriculture, effective soil cultivation is required prior to sowing in order to subsequently achieve a good harvest result. For the preparation of agriculturally used soil, various soil cultivation implements are known which are usually mounted directly or indirectly on a tractor and are moved by the same such that they penetrate into the soil. These include, for example, cultivator shares and components connected thereto with which soil can be loosened or lifted.
For many decades, cultivator shares and other individual parts for agricultural soil cultivation or corresponding implements were made exclusively of steel. On the one hand, steel is relatively inexpensive and, on the other hand, it is basically also quite wear-resistant. In recent times, however, it has become common practice to additionally tip steel components with carbide inserts. Although carbide is many times more expensive than steel, it has been found that by using appropriate carbide tipping, the service life of cultivator shares, for example, can be extended to such an extent that in an overall assessment, the initially higher manufacturing costs in relation to the maximum service life are amortized and overall, a better cost-benefit ratio is provided.
Cultivator shares, and often also other individual parts, are attached to receiving components, which in turn are connected to a towing vehicle, such as a tractor. It is common for cultivator shares to be attached to a tine, which has a curved shape. This tine, which is usually made of steel, is also subject to a certain amount of wear when it comes into direct contact with soil that is lifted and slides along the shares and then along the tine. Therefore, a guide plate is often provided which serves for a better mixing of the soil. This guide plate is attached to the tine together with the cultivator share by placing the guide plate on the tine and thereafter placing the cultivator share on top and fastening them to the tine using a fastener so that the guide plate is held clamped between the cultivator share and the tine. To make this possible, both the cultivator share and the guide plate have at least one mounting hole through which a fastener can be passed. When cultivating the soil, the cultivator share is then actively cultivating, whereas the tine only serves as a support for the cultivator share and the clamped guide plate serves as protection for the tine.
The tines known from prior art have different bends, depending on the manufacturer. Well known are tines with a radius of 300 mm, but also tines with a radius of 600 mm. Tines with smaller or larger radii or a plurality of radii are also known. The problem here is that up to now, for each design of a tine, a correspondingly adapted share or cultivator share has to be provided, which is in each case adapted to the bending radius of the tine. What this means for a farmer is that for the replacement of worn shares, many different share models have to be kept in stock, which requires a high stock level.
It is an object of the invention to provide a share of the aforementioned type which is compatible with a multiplicity of base bodies, such as tines, so that they can be used as universally as possible, regardless of a base body.
This object is achieved when in case of a share of the aforementioned type, a bend of the share has a plurality of different bending radii.
The invention is based on the consideration that when designing a share, such as a cultivator share, having different bending radii, areas are created for engagement on a base body, such as tine, which result in a full-surface engagement on the base body, while accepting that in other areas with a different bending radius, full-surface engagement is not achieved and that sometimes there may be a gap or play. However, the partial full-surface engagement is completely sufficient for a functional purpose. On the other hand, the areas that do not perfectly engage on each other, which are designed with a different bending radius, allow a reversed situation to occur with another base body having different bends, so that then the areas that do not engage over the full surface become in this case the areas that engage over the full surface and there is a gap or play in other areas. In other words, it can also be said that by designing the shares with different bending radii for individual base bodies for soil cultivation, sufficient engagement areas are created, wherein different engagement areas are used for different base bodies. This can therefore be deemed a universal share that fits on different base body models. This simplifies stock-keeping in the long term. In this connection it is also surprising that it is not necessary at all that a share, such as a cultivator share, engages on the base body in all areas or at least to a large extent or predominantly over the full surface, but that partial areas are already sufficient for the functional purpose.
Preferably, a first bending radius and a second bending radius are provided. The two bending radii have different radii. Although basically any number of bending radii can be provided, a maximum of three to four bending radii is practical. With more bending radii, even more base bodies can be fitted; however, on the one hand, the number of base bodies is manageable and, on the other hand, more bending radii reduce the maximum surface on which a maximum full-surface engagement is possible in the individual case of a certain base body. In this context it is particularly preferred that a plurality of share sections is bent with the first bending radius or the second bending radius. Here, it can also be provided that a sequence of first bending radius, second bending radius and then again first bending radius is provided along the shares. Thus, two areas or share sections having the first bending radius are provided, between which an area having the second bending radius is arranged. Therefore, in case of a base body that has a corresponding first bending radius, the shares can come into engagement at the beginning and at the end, which is completely sufficient for the functional purpose. However, in case of a base body having the second bending radius, the area of the share having the second bending radius comes into full-surface engagement. This, in turn, is also sufficient for a perfect function during operation. The individual surfaces can be designed in such a manner that, in terms of the surface area, the two sections having the first bending radius correspond approximately to the surface having the second bending radius, so that overall, regardless of the base body, approximately the same surface is provided for each bending radius. In principle, however, this ratio of the surfaces can also be designed to be variable and, for example, can be in the range of 0.5:1.5 in relation to the surfaces with the first bending radius and the surfaces with the second bending radius.
It is preferred that a recess for receiving a guide plate is provided on a lower side of the share. By means of a corresponding recess, flexibility is achieved with regard to a possible reception of a guide plate. If there is no guide plate, the receptacle can remain free. Otherwise, the guide plate can be placed underneath the share and above a tine.
The (universal) share according to the invention can thus be used with or without a guide plate. According to the prior art, the guide plates are mostly shaped such that they engage in a positive-locking manner in a corresponding recess on the underside of a share. After fixing the guide plate and the share to a base body by means of a fastener, anti-twist protection is achieved by a corresponding positive fit. In contrast, the recess of a share according to the invention does not end v-shaped in plan view, as for example in the prior art, but ends straight, in particular to be able to also receive guide plates of different shapes. In order to still achieve anti-twist protection, the share has lugs protruding from the lower side. These lugs engage around corresponding outer sides of a base body so that even under the forces acting during operation, the share cannot be swiveled around the axis of the fastener(s), which would cause the share to loosen over time. Thus, despite the flexibility to receive different guide plates with different geometric shapes, protection against unintentional swiveling during operation and a resulting loosening of the fastening is still achieved.
In order to make the shares even more robust against wear during operation, reinforcements can be provided on an upper side of the share.
Other exemplary embodiments and advantages of the present invention may be ascertained by reviewing the present disclosure and the accompanying drawing.
The present invention is further described in the detailed description which follows, in reference to the noted plurality of drawings by way of non-limiting examples of exemplary embodiments of the present invention, in which like reference numerals represent similar parts throughout the several views of the drawings, and wherein:
Further features, advantages and effects of the invention are apparent from the exemplary embodiments shown below. In the drawings, to which reference is made:
The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the present invention. In this regard, no attempt is made to show structural details of the present invention in more detail than is necessary for the fundamental understanding of the present invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the present invention may be embodied in practice.
In
As can be seen in
Along its longitudinal extent, the share 1 has an upper side 9 which delimits the share 1 towards the top, and on the opposite side, it has a correspondingly delimiting lower side 10. Upper side 9 and lower side 10 are connected by side faces. Furthermore, the share 1 has a first mounting hole 3, a second mounting hole 4, which is formed as an elongated hole, and a third mounting hole 5. These mounting holes 3, 4, 5 extend through the share 1 from the upper side 9 to the underside 10 and functionally serve to receive a fastener when the share 1 is fastened to a soil cultivation implement 2. Furthermore, for this purpose, the share 1 has lugs 13 which interact with the soil cultivation implement 2 in a manner to be explained later. The lugs 13 are formed at the second end 17 on the lower side 10 and preferably extend vertically away from it.
As can be seen in particular in
As mentioned, the share 1 has a bent shape. According to invention, the share 1 has different bending radii R1, R2. The bending radii R1, R2 are provided in different share sections 1a, 1b, 1c. In the exemplary embodiment according to
In
In
In
The concept of the different bending radii R1, R2 of a share 1 thus allows the share 1 to be mounted on soil cultivation implements 2 which are bent differently. The invention takes advantage of the knowledge that it is sufficient for the intended applications to have a full-surface engagement of the share 1 on a soil cultivation implement 2 only in individual areas. This in turn allows different bending radii R1, R2 to be provided in different share sections. Even though the number of bending radii R1, R2 is not limited in this respect, it is recommended to limit the number of bending radii and, when limiting, to choose them such that they correspond to the usual radii of base bodies, such as tines. In such a design, the share 1 can then be used as a universal share and can be used or combined with various models of soil cultivation implements 2.
Lastly,
It is noted that the foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present invention. While the present invention has been described with reference to an exemplary embodiment, it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Changes may be made, within the purview of the appended claims, as presently stated and as amended, without departing from the scope and spirit of the present invention in its aspects. Although the present invention has been described herein with reference to particular means, materials and embodiments, the present invention is not intended to be limited to the particulars disclosed herein; rather, the present invention extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims.
Number | Date | Country | Kind |
---|---|---|---|
A 50602/2019 | Jul 2019 | AT | national |