Device for mixing and / or cutting feed, feeding system, as well as method for manufacturing an auger

Abstract

A feed mixer wagon or other device for mixing and / or cutting feed for animals, such as cows, comprises a container for taking up feed. An auger is fitted in the container, and is rotatable and driveable for mixing and / or cutting feed taken up in the container. The auger comprises a core body, and an auger blade, which extends around the core body, in particular in a spiral shape. The auger blade comprises several curved auger blade sections, which are attached to the core body and to one another. The auger is manufactured by a manufacturing method which comprises (i) the casting of the auger blade sections, and (ii) the attachment of the cast auger blade sections to the core body and to one another.

Description

Equipment for mixing and / or cutting feed, feeding system, as well as method for the manufacture of a mortar The invention relates to a device for mixing and / or cutting feed for animals, such as cows. Lely's Vector® automatic feeding system is well-known. This The feeding system includes an autonomous feed mixer wagon, which is mobile over a subfloor, such as a floor. The feed mixer wagon includes a mixing bowl for the taking up a batch of feed. A mixing auger is installed in the holder, which is rotatable. for a predominantly vertical rotation centerline that can be driven for mixing and cutting of feed taken into the mixing container. The mixing auger comprises a core body, which the forms a mortar shaft. A mortar blade extends mainly in a spiral around the core body out. On the radial outer edge of the mortar blade are multiple cutting blades applied to cut the feed. The auger blade starts at the bottom of the mixing bowl with a leading edge that feeds from the bottom as the mixing auger rotates. picks up, so that already picked-up feed is moved upwards over the auger blade. At the upper end of the auger blade, the feed falls back down. During rotation of In the mixing auger, the feed is mixed and cut in the mixing holder. The core of the mortar is tubular. The tubular core is made by bending a flat metal plate into a cylindrical shape. It The mortar blade comprises multiple metal mortar blade parts, which are attached to the core body and to each other. are welded together. Each screw blade section has a curved shape. The screw blade section is manufactured by cutting out a flat metal plate that corresponds to the to form the mortar blade part and the cut-out flat metal plate then into the to bend the curved shape of the mortar blade part. The manufacture of the curved cutting jack blade parts is very difficult in practice and can only be carried out by specialized, experienced craftsmen with special machines and tools. Because Since such skilled workers and machines are scarce and expensive, the mixing auger is a costly element. A purpose of the invention is to provide a device for mixing and / or to provide cutting of animal feed, whereby the mortar is simpler and is more cost-efficient to manufacture. According to the invention, this objective is achieved by a mixing device. and / or cutting of feed for animals, such as cows, in particular dairy cows or beef cattle, where the setup includes: a holder for taking up feed, for example a batch of feed, a jack, which is mounted in the holder and is rotatable and driveable for mixing and / or cutting feed contained in the container, and where the mortar comprises: . a nucleolus, for example a tubular or cylindrical axial body, . a mortar blade, which extends around the core body, in the particularly spiral-shaped, i.e. along a helical line, whereby the mortar blade comprises multiple curved mortar blade parts, which at the core and are attached to each other, where the mortar is manufactured using a manufacturing method which includes (i) casting of the mortar blade parts, and (ii) attaching the cast mortar blade parts to the core and joined together. According to the invention, one or more of the curved mortar blade parts, preferably all mortar blade parts, cast. In the manufacture of the mortar, the cast mortar blade parts become the cast mortar blade parts after casting, i.e. in a subsequent step, attached to the core body and to one another, in particular by welding. Therefore, the auger of the device for mixing and / or cutting feed comprises animals according to the invention cast mortar blade parts attached to the nucleus and are attached to one another. The mortar according to the invention is formed by a assembly comprising the nucleus and the cast auger blade parts. The nucleus and the cast mortar blade parts are joined during the manufacture of the mortar. Subsequently, the core and the mortar blade form a single unit. Compared to bending the curved auger blade parts from a flat surface sheet metal part as known in the state of the art, where it is particularly difficult is to achieve the curved shape according to the prescribed specifications and for which specialized, experienced professionals with special machines and tools are needed, casting the curved mortar blade parts is simple. The The casting process can remain simple, because only the mortar blade parts are cast first. and subsequently the cast mortar blade parts to the core body and to each other be attached, and thus the mortar is not cast as a whole. The shape of the Cast mortar blade parts are easy to release from the mold. The required casting mold for the individual mortar blade parts is also simple, and with the currently available techniques, such as 3D printing, to make relatively cheap. In other words, once the once the casting mold is made, the curved auger blade parts can be easily and accurately are produced according to specifications. The cost of the cast auger blade parts are therefore comparable to, or even lower than, the mortar blade parts that have been produced with the well-known bending process. The subsequent merging of the core body and the cast mortar blade parts according to the invention are also relatively simple, i.e. can be carried out by less specialized craftsmen than the bending of the Curved mortar blade sections according to the state of the art. The cast mortar blade sections are attached to the core body and to each other, for example by axes. Therefore, according to the invention, the mortar is made by joining the core body and the cast mortar blade parts. The mortar is composed of various parts, comprising the core body and the cast auger blade parts. From a production perspective, the manufacture of the mortar is in accordance with the invention. which includes at least the above-mentioned two steps, i.e. the casting of the mortar blade parts and subsequently attaching and joining them together with the core body, optimized. As a result, the auger of the mixing device is and / or cutting animal feed particularly simple and cost-efficient manufacture It is noted that the casting of ship propellers is generally known is. The casting of ship propellers, however, concerns a distant technical field. Moreover, ship propellers are cast in their entirety, i.e. both the hub and The propeller blades of the ship's propeller are cast in a mold in one go. That is other than the manufacture of the auger of the mixing and / or device cutting of animal feed according to the invention, whereby only the curved mortar blade parts of the mortar are cast and the cast mortar blade parts then be attached to the core body and to each other. In a preferred form of execution according to the invention, the auger blade parts each a curved feed displacement surface for the over it moving feed. The feed displacement surface extends partially around the core body out. The feed taken into the container is expelled during rotation of the auger. transported along the feed displacement surface for mixing and / or cutting that feed. In particular, the feed displacement surface is spiral-shaped or screw-blade shaped. Additionally, the feed displacement surface can be mainly continuous be curved, at least when viewed in the circumferential direction. It is also possible that the curved feed displacement surface, viewed in a radial cross-section, essentially straight is. According to the invention, it is preferable that at least one of the auger blade parts on the side opposite the feed displacement surface a knife support section, which comprises a substantially flat mounting surface for the attaching a flat cutting blade to it involves, where the blade support part is cast together with the casting of that mortar blade part. For example, each cutting blade comprises a knife blade with a serrated cutting edge that protrudes from the outer edge of the mortar blade. In the manufacture of the auger of the feed mixer wagon of the above The aforementioned well-known automatic feeding system Vector® from Lely is one of several mortar blade parts equipped with cutting blades with an immediate flat cutting blade. To the flat cutting blades without attaching bending stresses, a part of the curved jack blade section cut out and replaced by a flat plate section, which is welded on. The flat plate part forms a blade support section. A flat cutting blade can reliably be attached to the flat sheet part, for example by means of bolted connections. Cutting out a portion of the curved auger blade parts and However, welding a flat sheet metal part is cumbersome and expensive. Because the mortar blade parts are cast according to the invention, it is possible to the to cast the blade support section directly together with the flat mounting surface. The the knife support part is, according to the invention, simultaneously with the mortar blade part formed by means of casting. The blade support section is integrated with the mortar blade part. This makes it possible to easily and reliably insert cutting blades into main part to attach to the cast jack blade parts without bending stresses. It is noted that a mixing device is known from EP1634494 A1, which is configured as a feed mixer wagon. The mixing unit comprises a mixing bowl with a mixing auger that is rotatable around a substantially vertical centerline of rotation driven. The mixing auger comprises an auger shaft and an auger blade that is spiral-shaped. extends around the mortar shaft. Multiple cutting blades are attached to the mortar blade. Each The cutting blade is connected by means of two bolts that extend through holes in the edge of the mortar blade. The mortar blade has a curved shape, while the knife blade is flat. is. To attach the flat blade to the curved one without bending stress The cutting blade is attached to the cutting knife by means of curved connecting parts. Due to the curved connecting sections, it is not necessary to a part of the to cut out the mortar blade part and replace it with a flat plate part. But the curved The connecting parts of the cutting blades make the mortar complicated and expensive. According to the invention, it is possible that the mortar blade part with the The knife carrier section is equipped with multiple bolt holes for attaching the cutting knife by means of bolts, whereby the bolt holes on the feed displacement surface each is provided with a recess for the mainly recessed mounting of the bolts at the attachment of the cutting blade, and where the Bolt holes with the recesses were cast together during the casting of that auger blade part. The cutting blades feature bolt holes that can be aligned with the bolt holes of the auger blade. If the cutting blades are attached by means of bolts on the blade support section of the auger blade, are the bolt heads of the bolts recessed into the bolt hole recesses of the jack blade. As a result do the bolt heads protrude little or not at all relative to the feed displacement surface. This is beneficial for effective transport and mixing of the feed. feed through the auger. Through the bolt holes with the recesses directly during the casting of to form the mortar blade part, there are, moreover, no extra costs for this or metalworking needed. In addition, it is also possible, for example, when casting the jack blade the bolt holes in cross-section to be essentially square. By By means of the square bolt holes, it is possible to create a particularly reliable to achieve attachment of the cutting blades to the mortar blade parts. Due to the casting, it is easy to achieve the square shape of the bolt holes. According to the invention, it is furthermore preferable that the mortar blade parts each comprise an inner edge and an opposite outer edge, where the outer edges of the mortar blade parts each comprise a thickening, which is cast together with the casting of that mortar blade part, and where the inner edges of the mortar blade parts are attached to the nucleus and the mortar blade parts in such a way are attached to each other, so that the outer edges with the cast-in thickenings a form the outer spiral-shaped, thickened wear edge of the mortar blade. The wear edge forms sacrificial material. The feed for animals, such as cows, is usually somewhat acidic, for example ensiled feed, such as grass silage. This leads to wear of the auger blade. The wear is also, and sometimes primarily, caused by sand or soil in the feed. The free The outer edges of the auger blade sections are most susceptible to wear. Due to the by providing the outer edges with a thickening, it is possible to extend the lifespan of the to significantly lengthen the auger. The thickenings form sacrificial material that during use of the mortar slowly wears away. Since the thickenings directly during the If the mortar blade parts are cast along with the rest, there are no extra costs involved. on creating the thickened wear edge of the auger blade. In a special embodiment according to the invention, the thickening has, viewed in the axial direction of the jack, a height, and, viewed in the radial direction of the mortar, a width where the height is smaller than the width. The cast, curved The mortar blade part forms a plate-shaped body that, viewed in the radial direction, is in essentially has a constant thickness. The thickening on the outer edge of the mortar blade protrudes from the feed displacement surface, i.e. forms a raised edge. Because the height of the thickening is smaller than its width, the thickening has little to no negative influence on the transport of feed through the auger, i.e. the transport function of the screw remains guaranteed, while the screw lasts longer is resistant to wear and tear. Preferably, the thickening has a teardrop shape in cross-section. The The teardrop shape is easy to pour with. Additionally, in practice, surprisingNijs it has become apparent that the teardrop shape has a particularly positive influence on the lifespan of the mortar. Casting the mortar blade parts has the advantage that molded parts with additional feed-related functions in addition to the general function of moving of feed over the feed displacement surface of the auger blade section, for example the blade bearing section, the bolt holes and the thickened wear edge as described above, be simple and feasible without extra costs, namely by including those molded parts to pour while casting the mortar blade parts. Therefore, according to the invention, it is preferable that the auger blade parts each a curved feed displacement surface for the over it possess for moving feed, whereby at least one of the auger blade parts is provided of one or more molded parts that deviate from the shape of that feed displacement surface, and in which those mold parts were cast along with the casting of that mortar blade part. The The feed displacement surface determines a curved screw blade surface. The molded parts possess a shape that deviates from the shape of the curved screw blade surface in order to to fulfill an additional feed-related function. Except for the knife carrier sections, the bolt holes and thickenings, the jack blade parts can have other shaped parts to to realize additional feed-related functions. In a special embodiment according to the invention is the mortar. rotatable about a substantially vertical centerline of rotation. In this case, the jack is a vertical auger. The curved feed displacement surface of the is located here the mortar blade parts meet at an upper side, i.e. form a top surface. The holder has a bottom and a rounded side wall, which extends from the bottom upwards extends. The mortar is mounted essentially upright in the holder. The mortar blade begins at the bottom of the holder immediately leading edge which, upon rotation of the auger, feed from the absorbs feed from the bottom, so that already ingested feed spreads over the top surface of the the auger blade is moved upwards. The feed falls at the upper end of the auger blade back down again. The downward-falling food forms a kind of casing attached to it contributes to keeping the feed moving upward over the auger blade on the auger blade. In the case of a vertical auger, the aggressive action of feed, sand and / or soil in the has a greater negative impact on the lifespan than with a horizontal auger, so that the benefits of the invention described above are clearly evident. In an embodiment in accordance with the invention, the nuclei and the mortar blade parts made of steel, in particular stainless steel. Stainless steel is special highly resistant to the aggressive effects of feed for cows, such as dairy cows or beef cattle, for example silage, and also against sand and / or soil in the feed. The use made of stainless steel increases the lifespan of the auger. The core body and the auger blade parts can also be made of steel and coated with a corrosion-resistant coating, which includes a hardening agent, for example. In a preferred form of execution under the invention, the device is a feed mixer wagon. The feed mixer wagon is designed for mixing and / or cutting feed and the dispensing and / or laying down of the mixed and / or chopped feed at a Feeding place for animals, such as cows, in particular along a feeding fence for the animals. According to the invention, it is possible that the feed mixer wagon is self-propelled and unmanned. and / or autonomous. The benefits of the invention are clearly evident in a autonomous feed mixer, which typically mixes smaller quantities of feed, but is used longer on average per day, causing the auger to wear out faster. The mortar according to the invention, however, also has advantages with other mixing devices for animal feed. The device according to the invention can be a conventional feed mixer wagons, which are, for example, self-propelled or designed to to be drawn, as by a tractor. The device according to the invention can further form a stationary mixer, which is used, for example, in a feeding system for feeding animals, such as an automatic feeding system. The invention also relates to a feeding system for feeding. of animals, such as cows, where the feeding system includes: a feeding barrier, for example in a stable with a living area for keeping animals, and a feeding alley extending along the feed barrier, in particular at the opposite the living area, lying side of the feed barrier, where the feeding system comprises a feed mixer wagon as described above, and the feed mixer wagon is preferably designed to move autonomously through the feed alley move and release feed along the feed barrier. The invention further relates to a method for the manufacture of an auger for use in a mixing and / or installation cutting feed for animals, such as cows, particularly at a facility such as described above, whereby the method includes: the manufacture or provision of a nuclear body, the casting of multiple curved mortar blade parts, or the provision of multiple curved mortar blade parts, which are manufactured by means of to pour, the fastening, in particular by means of welding, of the cast mortar blade parts to the nucleus and to each other for the forming a mortar blade, which extends around the nucleus, in the particularly spiral-shaped, i.e. following a helical line. In addition, according to the invention, it is preferable that when casting at least one of the mortar blade parts on one side thereof opposite a curved feed displacement surface for moving feed over it lies, a the blade support section is cast in, providing a substantially flat mounting surface includes for attaching a flat cutting blade to it. Furthermore, according to the invention, it is possible that when casting each a mortar blade part forms an inner edge and an opposite outer edge, where a thickening is cast into the outer edge of each mortar blade section, and where the inner edges of the mortar blade parts are attached to the core body and the mortar blade parts are attached to each other in such a way that the outer edges with the cast-in thickenings an outer spiral, thickened wear edge of the form mortar blade. The invention will now be explained in more detail by means of an in the Execution example shown in the figures. Figure 1 shows a schematic top view of a feeding system for the feeding of animals according to the invention. Figure 2 shows a partially cut-up perspective view of a feed mixer wagon of the feeding system shown in Figure 1 according to the invention. Figure 3 shows a partially disassembled perspective view of the auger of the feed mixer wagon shown in Figure 2. Figures 4A, 4B, and 4C show different views of a mortar blade section. of the mortar shown in Figure 3. Figure 5 shows a perspective view of the mortar of the one in Figure 2. feed mixer wagon shown. A feeding system for feeding animals, in particular cows 4, such as dairy cows or beef cows, is indicated in its entirety by 1 in Figure 1. In this The example of implementation is feeding system 1 installed in a barn 2 with a living space 3 for keeping the cows 4, in which cubicles 5 are located. The Living space 3 comprises two feeding gates 6 in this execution example. On the opposite the living space 3 Lying side of each feed barrier 6 a feeding aisle 7 extends. In this implementation example, feeding system 1 forms an automatic feeding system. This feeding system includes a feed storage system located outside the barn. 2 is located (not shown). There are multiple feed types in the feed storage system. stored, such as silage, hay, and maize. The feed stock system contains, for example, an amount of food for several days, for example 1-5 days, or for a longer period, such as a few weeks or even months. Feed system 1 comprises an autonomous feed mixer wagon 9. The Feed mixer wagon 9 is self-propelled and unmanned. Feed mixer wagon 9 is designed to to be loaded with feed from the feed storage system. The feed mixer wagon 9 is further carried out for mixing and cutting the loaded feed, and for dispensing the mixed and chopped feed to the cows 4. Therefore, the cows are 4 automatically fed. The feed mixer wagon 9 comprises a chassis with wheels 11, with which the feed mixer wagon 9 is movable over a floor of the feed alley 7, the yard of a farm or other subsoil. In this implementation example, the includes feed mixer wagon 9 a foronNiel and two eightNiels. The feed mixer wagon 9 can however also have been executed differently. The feed mixer wagon 9 includes a drive and steering system for the driving and steering the propellers (not shown). The drive and The steering system comprises at least an electric drive motor. An electronic The control system is connected to the drive and steering system to regulate it. (not shown). The feed mixer wagon 9 also includes a battery system for storage. of electrical energy (not shown). The battery system is connected to the drive and steering system and the control system. A charging station 8 is provided for charging the battery system of the feed mixer wagon 9. In this implementation example, loading station 8 comprises a 10A charging station coupling that can be mechanically connected to a feed mixer coupling 10b to make a plug connection. Although it Loading station 8 in Figure 1 is shown at the end of feed aisle 7. 8 in practice usually placed with the feed storage system. TenNijl the feed mixer wagon 9 is positioned in charging station 8 to charge the battery system, can the feed mixer wagon 9 will then be filled with feed. The loading station 8 forms in this case simultaneously a feed loading station. By regulating the drive and steering system, the speed and the direction of movement of the feed mixer wagon 9 be determined. By means of The control system allows the feed mixer wagon 9 to drive a route autonomously to deliver feed. deliver to the cows 4. However, it is also possible that the feed mixer wagon is 9 suspended from a guide rail (not shown). As shown in Figure 2, the feed mixer wagon 9 comprises a holder 12 for taking up a batch of feed. Holder 12 is mounted on the base of the feed mixer wagon 9. The holder 12 comprises a bottom 14 and a continuous side wall 15 which extends upwards from the bottom 14. In Figure 2, the circular side wall 15 partially worked up to make the interior of the holder 12 visible to make. For distributing the feed along one or more of the feed barriers 6 in stall 2 has an elongated dispensing opening in the side wall 15 of holder 12. installed, which can be closed off by an elongated sliding door (not shown). The The sliding door can be moved between a closed and an open position. In the closed position of with the sliding door the delivery opening is completely closed. In the open position, the discharge opening at least partially cleared by the sliding door to discharge the feed give from the holder 12. Feed mixer wagon 9 includes a feed pushing device for pushing remaining feed located along the feed barrier 6 and feed dispensed from the holder 12 in a direction perpendicular to the direction of travel T of the feed mixer wagon 9, in particular for the forming a swath-shaped heap of pushed-down feed along a feed barrier 6. In this implementation example: the feed pusher device includes a rotating skirt 18. In the holder 12 is a mortar 13 for mixing and / or cutting in the holder 12 feed is applied. The auger 13 is driveable and rotatable to a substantially vertical rotation centerline 16, i.e. the jack 13 is a vertical jack. The Screw 13 comprises a tubular core body 20, which forms the screw shaft. The core body 20 is mainly closed at the top by a flat closing plate 23 (see figure) 3), which is covered by a lid 19. The nucleus 20 is in this execution example made of stainless steel. The mortar 13 comprises a mortar blade 21, which surrounds the nucleus 20 extends. The auger blade 21 starts at the bottom 14 of the holder 12 with a leading edge 25 (see also figure 5) which, upon rotation of the auger 13, picks up feed from the bottom 14, so that feed already taken up is moved upwards over auger blade 21. At the at the upper end of the auger blade 21 the feed falls back down. The falling downwards feed forms a kind of casing that helps to move it up over the auger blade 21 to keep moving feed on auger blade 21. The mortar blade 21 extends spirally or screw-shaped around the nucleolus 20. As shown in the figures, the radius of the mortar blade is 21, viewed from top to bottom, gradually increasing. In other words, the auger blade 21 moves downwards. becoming increasingly wider. As shown in Figure 2, there are 21 multiple attached to the mortar blade. cutting blades 22 attached for cutting feed, which protrude radially relative to the outer spiral edge of the mortar blade 21. The mortar blade 21 comprises multiple curved mortar blade sections 24 (see figure 3). The auger blade parts 24 are made of stainless steel in this execution example. Ter In the illustration, in Figure 3, one of the mortar blade parts 24 is drawn separately, but the mortar blade parts 24 are welded to the core body 20 and to each other, as shown in Figure 2. The nucleus 20 and the mortar 21 with the mortar segments 24 form a whole. The mortar blade part 24, drawn separately in Figure 3, is further shown in figures. 4A, 4B and 4C. Although the shape and dimensions of the other auger blade parts 24 are different, each mortar blade part 24 comprises in the same way as in Figure 3 shown mortar blade part 24 an inner edge 26 and an opposite outer edge 27. The inner edges 26 of the jack blade parts 24 are welded to the core body 20. The mortar blade parts 24 are attached to the nucleus 20 and to one another in such a way confirmed, that the outer edges 27 of the mortar blade parts 24 the outer spiral edge of the mortar blade form 21. The auger blade sections 24 each have a curved feed displacement surface. 28 for moving feed over it. At the vertical auger 13 according to this As an example of implementation, the feed displacement surfaces form 28 of the auger blade parts 24 the curved upper surface of the auger blade 21. Upon rotation of the mortar 13 is fed over the curved, upward-facing feed displacement surface 28 transported upwards. The tubular nucleus 20 can be in various ways manufactured, for example by bending a flat sheet part or by extrusion. According to the invention the curved mortar blade parts 24 are manufactured by means of a casting process. After casting, the cast mortar blade parts 24 are attached to the core body 20 and welded together to form the jack 13. This has technical production advantages. As shown in Figures 4B and 5, various include auger blade parts 24 on the side opposite the feed displacement surface 28 Lying side one or more of the blade carriers 29. The blade carrier 29 comprises an in main feature flat mounting surface or platform for attaching a cutting knife 22 with a flat cutting blade. As a result, little to no bending stress occurs, so that the cutting blades 22 can be applied reliably and durably. The knife support parts 29 were cast together with the casting of the 24 mortar blade parts. As a result, no additional metalworking is required for forming. of the flat mounting surface for the cutting blades 22 essentially without to mount bending stresses. The knife support sections 29 can be cost-efficient shaped The cutting blades 22 are attached to the blade support sections 29 of the jack blade parts 24 by means of bolt connections. The jack blades 24 have in this execution example for each cutting blade 22 two bolt holes 31. The cutting blades 22 have each two corresponding bolt holes (not shown). The bolt holes of the cutting blades 22 can be aligned with the bolt holes 31 of the jack blades 24, so that therein bolts can be inserted. The bolt holes 31 of the jack blade parts 24 are in cross-section in main part square. By means of the square bolt holes 31, a special durable attachment of the cutting blades 22 possible. The square bolt holes 31 are also formed during the casting of the mortar blade parts 24, so that no extra Metalworking techniques, such as laser cutting, are required to make the bolt holes 31. The bolt holes 31 of the jack blade parts 24 are at the feed displacement surface 28 provided with a recess 32 for the mainly recessed mounting of the bolt heads when attaching the cutting blades 22. The recesses 32 can be used directly during the casting of the mortar blade parts 21 are formed together, so that they can be simple and cost-efficient made. After the cutting blades 22 are by means of the bolt connections attached to the blade support section 29 of the mortar blade part 24, the bolt heads protrude little or not at all from the feed displacement surface 28. The feed displacement surface 28 remains essentially smooth. This is beneficial for the effective mixing the feed by the auger 13. As most clearly shown in Figures 3, 4B and 4C, the include outer edges 27 of the mortar blade parts 24 each a thickening 30. The free outer edges 27 of the 24 auger blade parts are most susceptible to wear due to the aggressive incorporation of feed. By providing those outer edges 27 with the thickenings 30, it is possible to significantly extend the service life of the auger 13. The thickenings 30 form sacrificial material that slowly wears away during use of the mortar 13. The outer edges 27 with the thickenings 30 of the mutually welded mortar blade parts 24 together form an outer spiral-shaped, thickened wear edge 33 of the mortar blade 21. The thickening 30 of each jack blade section 24 has, viewed in the axial direction of the screw 13, a height h, and, viewed in the radial direction of the screw 13, a width W. The height h is smaller than the width W. In this execution example, the thickening has 30 in cross-section a teardrop shape. In practice, it has surprisingly turned out that when applying such a thickening 30 the mixing action of the auger 13 remains guaranteed, while the auger 13 is resistant to wear longer due to the action of feed. The thickenings 30 were cast together during the casting of the mortar blade parts. 24. Since the thickenings 30 directly during the casting of the mortar blade parts 24 are cast along with it, there are no extra costs associated with realizing the thickened wear edge of the mortar blade 21. Casting the mortar blade parts 24 has the advantage that molded parts with additional feed-related functions in addition to the general function of moving of feed over the feed displacement surface of the auger blade section, as shown above described molded parts, i.e. the blade support section, the square bolt holes, the recesses for countersunk mounting of bolt heads, the thickened wear edge, simple and are achievable without extra cost, namely by casting those mold parts together. during the casting of the mortar blade parts. Except for the mold parts described above. the mortar blade parts can have 24 further cast-in mold parts to still other to realize related functions. The invention is not limited to that shown in the figures. feeding example. The feed mixer wagon, for example, does not need to be autonomous, but also be driven by a driver, such as a farmer. Instead of self-driving The feed mixer wagon is further designed to be towed by a tractor. In addition, the auger of the feed mixer wagon described above can be suitable for a stationary mixer. Furthermore, it is possible that the jet of the sheet 21 does not increase from top to bottom, but is constant.

Claims

1. Equipment for mixing and / or cutting animal feed (4), such as cows, where the setup includes: a holder (12) for taking up feed, a screw (13), which is fitted in the holder and rotatable and is capable of being driven for mixing and / or cutting of substances contained in the holder feed, and where the auger comprises: . a nuclear body (20), . a mortar blade (21), which extends around the nucleus, in the particularly spiral-shaped, with the mortar blade having multiple curved sections mortar blade parts (24) which are attached to the nucleus and to each other confirmed, with the characteristic that the mortar is manufactured using a manufacturing method that includes (i) casting the mortar blade parts (24), and (ii) attaching the cast mortar blade parts to the nucleus (20) and to each other.

2. Arrangement in accordance with claim 1, where the mortar blade parts each have a curved have a feed movement surface (28) for moving feed over, and whereby at least one of the mortar blade parts on the opposite side of the feed displacement surface The horizontal side is equipped with a knife support section (29), that a substantially flat mounting surface for attaching a thereto flat cutting blade (22) includes, and where the blade support part is cast in during casting of that mortar blade part.

3. Device within the meaning of claim 1 or 2, where the mortar blade part with the the knife carrier section is equipped with multiple bolt holes (31) for attaching the cutting knife by means of bolts, whereby the bolt holes on the each feed displacement surface is provided with a recess (32) for the in mainly flush mounting of the bolts when attaching the cutting blade, and where the bolt holes with the recesses are cast together during the casting of that mortar blade part.

4. Arrangement in accordance with one or more of the preceding claims, whereby the mortar blade parts each have an inner edge (26) and an opposite outer edge (27) include, where the outer edges of the mortar blade parts each have a thickening (30) include, which was cast along with the casting of that mortar blade part, and whereby the inner edges of the mortar blade parts are attached to the core body and the mortar blade parts are attached to each other in such a way that the outer edges with the molded thickenings an outer spiral, thickened wear edge (33) of the form mortar blade.

5. Configuration according to claim 4, where the thickening, viewed in axial direction of the screw (13), has a height, and, viewed in radial direction of the screw (13), has a width where the height is smaller than the width, and where the thickening preferably has a teardrop shape in cross-section.

6. Arrangement in accordance with one or more of the preceding claims, whereby the auger blade parts each have a curved feed displacement surface (28) for the possess for moving feed, whereby at least one of the auger blade parts is provided of one or more mold parts (29, 30, 31, 32) that differ from the shape of that feed displacement surface, and where those mold parts during the casting of that auger blade part are cast in.

7. Arrangement in accordance with one or more of the preceding claims, whereby the the jack is rotatable about a predominantly vertical centerline of rotation (16).

8. Arrangement in accordance with one or more of the preceding claims, whereby the The core body and the auger blade parts are made of steel, in particular stainless steel. (stainless steel).

9. Arrangement in accordance with one or more of the preceding claims, whereby the Cast auger blade parts are welded to the core body.

10. Arrangement in accordance with one or more of the preceding claims, whereby the equipment a feed mixer wagon (9) is.

11. Feeding system for feeding animals (4), such as cows, where the feeding system (1) includes: a feed barrier (6), for example in a stable (2) with a living area (3) for the loving animals, and a feeding passage (7) that extends along the feeding fence, in particular at the opposite the living area, lying side of the feed barrier, where the feeding system comprises a feed mixer wagon (9) as per claim 10, and the feed mixer wagon is preferably designed to move autonomously through the feed alley move and release feed along the feed barrier.

12. Method for making a mortar (1 3) for use with a facility for mixing and / or cutting feed for animals, such as cows, in the particularly in the case of an establishment in accordance with one or more of Conclusions 1-10, where the method includes: the manufacture or provision of a nuclear body (20), casting several curved mortar blade parts (24), or providing several curved mortar blade parts (24), which are manufactured by means of of casting, attaching the cast auger blade parts to the core body and to each for forming a mortar blade (21), which is around the nucleus extends, in particular spirally.

13. Method pursuant to claim 12, whereby when casting at least one of the mortar blade parts on one side thereof opposite a curved feed displacement surface (28) for moving feed over it, a knife support section (29) is cast in, which is essentially flat includes mounting surface for attaching a flat cutting blade (22).

14. Method according to claim 12 or 13, where, when casting each the mortar blade part has an inner edge (26) and an opposite outer edge (27) formed, with a thickening (30) cast into the outer edge of each mortar blade part, and where the inner edges of the mortar blade parts are attached to the nucleus body be secured and the mortar blade parts are attached to each other in such a way that the outer edges with the cast-in thickenings an outer spiral-shaped, thickened form a wear edge (33) of the mortar blade.

15. Method of working in accordance with one or more of claims 11-13, whereby the cast mortar blade parts are attached to the core body and to each other by means of of welding. 5524486T971110b71361 / 5

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