• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a forage harvester with a chopping drum (3) fitted with chopping knives (4), which is mounted in a chopper housing (2) with a housing-fixed counter blade (13) and a friction base (7) with stop pieces (8) so that it can be driven all around At least one stop piece (8) of the friction base (7) consists of a composite material composed of at least a first and a second material, the at least first material having a carrier element (10) that is softer on a hardness scale for at least one second material a hardness scale harder material existing wear element (9) forms.
    公开号:BE1021638B1
    申请号:E2013/0175
    申请日:2013-03-19
    公开日:2015-12-21
    发明作者:Martin Stengele
    申请人:Claas Saulgau Gmbh；
    IPC主号:
    专利说明:

    Forage harvester with friction soil
    The invention relates to a forage harvester with a friction soil for a chopper aggregate according to the preamble of claim 1.
    Forage harvesters for harvesting stemmed crops, such as maize plants, have a chopper aggregate with a chopper drum, which is equipped with chopper knives and driven in rotation, which cooperate with a counterblade fixed to the housing. The chopper drum is mounted in the side walls of a chopper housing.
    DE 2640334 C2 describes a forage harvester with a chopper drum occupied by chopping knives. The feed housing downstream of a chute, through which the chopped crop, accelerated by the rotational movement of the chopper drum, carried away, i. is thrown out. During the orbital movement of the shredded material this is carried over a friction base, which is also designed as a floor panel, whose task is to guide the chopped material and tear, or unlock. For this purpose, the friction base with stop pieces, designed as serrated friction bars, occupied.
    These tend to apply deposits in front of the friction edge, which leads to a significant functional impairment. The crop no longer bounces on a hard edge of the friction and is thus not struck and open-minded. Due to the continuous friction, the crop has no possibility to flow outside the cutterhead radius, i. The crop must flow with the knives within the drum radius. The result is no attacks of the crop and thus no or only a small function, or the crop is squeezed between knife and friction bar, creating a high friction, high power consumption, high wear on the friction and the chopping knives. In addition, it is unavoidable that grains of sand can also be added to the shredded material, so that the continuous rubbing strip consequently becomes abrasive
    Wear on the friction impact edge quickly rounds off with the previously described consequences for the crop and the power consumption at the chopper drum.
    task
    This is where the object of the invention with the aim to reduce the wear of the friction against known designs to extend the life of the friction, to improve the digestion of the crop and to reduce the power requirements for the use of the chopper with the friction soil. Solution of the task
    The object of the invention is achieved with the characterizing features of independent claim 1. Further advantageous embodiments of the invention are the dependent claims, the description and the
    Figure representations to take.
    In the invention, it is a forage harvester with a chopper drum occupied with chopper knives, which is mounted in a chopper housing with a counter-blade fixed to the housing and a plurality of friction base occupied with stop pieces. In this case, there is at least one stop piece of the friction base of a composite material, which is composed at least of a first material and a second material. At least the first material is a softer on a hardness scale material, which is designed as a carrier element and which receives the other harder on a hardness scale material. The other, harder material is as
    Wear element formed. At least the first material is essentially a ductile material, which forms an elastically deformable connection with the chopper bottom or the bottom plate of the friction plate, so that the stop pieces do not break off in the event of impact loads and then reach the shredded material. The further, harder material offers a high wear resistance and thus increases the service life of the stop pieces.
    Preferably, the first material as a support member of the hard wear-resistant material is a weldable material, since this can then enter into a permanent weld with the bottom plate of the friction.
    The at least second wear-resistant material, designed as a wear element, is preferably a hard metal or a sintered metal, but may also consist of a bonding matrix with embedded non-oxide ceramic materials. Also mixtures of carbides, oxides or nitrides of the base materials tungsten, aluminum, silicon, zirconium or boron, or a mixture or parts thereof, are suitable for such wear elements. This also applies to tungsten carbides embedded predominantly in a nickel alloy matrix, which can be applied to the carrier element, for example by the flame spraying method.
    According to the invention, a plurality of stop pieces are arranged on the bottom plate of the friction base in at least two, approximately perpendicular to the crop flow direction and spaced rows, wherein the stop pieces of the adjacent rows are arranged transversely to Gutflussrichtung offset from each other, so that between these stop pieces free and mutually offset transversely to the crop flow Intermediate spaces are formed.
    In this case, the friction floor is preferably screwed as a replaceable component with the chopper housing, so that it enters into a releasable connection with the chopper housing.
    The stop pieces are preferably round, but can also be square, square or elongated. They are preferably welded to the bottom plate of the friction base, but can also be clamped or screwed connected to the bottom plate. They can be replaced individually or in groups or completely pre-assembled. All have in common that these are special wear parts, which have the advantage of high wear resistance.
    The stop pieces may for example also be designed as so-called TungStuds. These are wear parts with an integrated carbide core, as used for example on drill bits of the boring tools of tunnel boring machines. These are characterized by good applicability and interchangeability by the stud welding process, making this process particularly easy to repair. By the arrangement of the stop pieces described above, the crop flow is optimally controlled. The stop pieces are arranged so that the crop can not flow unhindered between the stop pieces, but must inevitably impact the stop pieces, thus providing the desired effect of impacting the crop, e.g. the corn kernels, arises. However, between the stop pieces are clearances that allow the crop to flow after the attacks. Due to the interrupted arrangement of the stop pieces, it is not possible for the crop to be deposited over a large area, since resulting deposits are immediately removed again by the flow of material. The wear-resistant design, the edges of the stop pieces are not rounded so quickly by the impact of the crop, resulting in a longer life of the friction. Due to the possibility of the crop to flow after the arrival or impact on the stop pieces through the interstices, the power requirement of the knife drum is reduced, since the crop does not have to flow over the friction, or must be squeezed between knives and friction, which results in a lower frictional resistance.
    EXEMPLARY EMBODIMENT Further details of the invention can be taken from the following figure representations and their descriptions.
    Show it:
    1 shows a chopping unit in a sectional view with a friction base.
    Fig. 2 detail X of the friction floor in an enlarged view;
    FIG. 3 shows the friction floor according to FIG. 1, detached from the chopper housing, in a perspective representation; FIG.
    4 shows a section IV-IV through the friction floor according to Figure 3;
    Fig. 5 detail Y as an enlarged detail of Figure 4.
    In Fig. 1, a chopping unit 1 of a forage harvester with a friction bottom 7 is shown as part of the housing bottom 6 in section. FIG. 2 shows the detail X of the friction floor 7 in an enlarged view and FIG. 3 shows the friction floor 7 according to FIG. 1, detached from the chopper unit 1, in a perspective view.
    The chopping unit 1 shown in simplified form essentially comprises a chopper housing 2, a chopper drum 3 occupied with chopping knives 4 which can be driven circumferentially about the rotation axis 5 with the direction of rotation R and a counterblade 13 fixed to the housing. The pre-press and feed rollers 12 are in front of the chopper housing 2 Pull in the shredded material and press it into a food cushion. The chopper drum 3 is mounted in the side walls of the chopper housing 2, not shown. The rotating chopping blades 4 of the chopper drum 3 interact cuttingly and shear-off with the counter-blade 13 and convey the shredded shredded material over the friction floor 7 in the flow direction A and thus in the direction of a chute of the forage harvester, not shown, for transfer to a support vehicle.
    In the proposed friction bottom 7 7 stop pieces 8 are arranged in one or more rows 18 in succession or offset on the bottom plate 14 of the friction plate, as shown in Fig. 3. The bottom plate 14 itself is increased by the height of the stop pieces 8 in the drum radius T relative to the axis of rotation 5 of the cutterhead 3, so that the upper edge 15 of the stop pieces 8, the height and a proposed gap 17 of about 0.5 to 1 mm , Define the distance 16 to the drum radius T, as shown in Fig. 4. The stop pieces 8 are welded in this embodiment with the bottom plate 14. The stop pieces 8 are made of different materials, namely a carrier element 10 made of weldable steel and a wear element 9, executed. The illustrated embodiment shows so-called "TungStuds" as they are used for example on drilling tools of tunnel boring machines as wearing parts. These are placed in the representation with the connection technique of stud welding and welded to the bottom plate 14. This includes the advantage that worn stop pieces 8 easily separated and with this
    Connection technology can be easily and quickly replaced on site again by new stop pieces 8.
    Fig. 3 shows the friction bottom 7 of FIG. 1, detached from the Flächerlergehäuse 2 in a perspective view, Fig. 4 shows the section IV-IV through the friction base 7 according to the section in Fig. 3 and Fig. 5, the detail Y as enlarged The bottom of the floor 7 and the side walls 19 represent the continuation of the housing wall of the Flächerlergehäuses 2. The flange feet 20 are used to the interchangeable friction bottom. 7 with a the Fläckslergehäuse 2 and the friction bottom 7 common, but not shown, console to screw. On the inside of the friction floor 7, the spaced stop pieces 8 are arranged in different rows 18 and welded to the bottom plate 14. Both between the rows 18, as well as spaced in these rows stop pieces 8, thus creating seamless spaces 11. With respect to the crop flow direction A, the stop pieces 8 of row 18 to each adjacent row 18 are arranged transversely to Gutgutrichtung offset from one another.
    REFERENCE SIGNS LIST 1 chopper unit 2 chopper housing 3 chopper drum 4 chopper blade 5 axis of rotation 6 caseback 7 friction base 8 stop pieces 9 wear element 10 support element 11 spaces 12 pre-press and feed rollers 13 counter-blade 14 bottom plate 15 top edge 16 distance 17 gap 18 row 19 side wall 20 flanged base A crop flow direction R direction of rotation T drum radius
    权利要求:
    Claims (10)
    [1]
    Forage harvester with friction soil claims
    1. forage harvester with a chopper blades (4) occupied chopper drum (3), which in a chopper housing (2) with a housing-fixed counter-blade (13) and a friction base (7) with stop pieces (8) mounted rotatably driven, wherein at least one stop piece (8) of the friction base (7) consists of a composite material, which is composed of at least a first and a second material, wherein the at least first material on a hardness scale softer support member (10) for at least a second harder on a hardness scale Material existing wear element (9) forms, characterized in that the stop pieces are round and that a plurality of stop pieces (8) of two adjacent rows (18), transversely to the crop flow direction (A) offset from one another, form free spaces (11), wherein the through two rows (18) and their stop pieces (8) within the two rows (18,18) defined free spaces (11) from one row (18) to the next following row (18) transversely to Gutflußrichtung (A) offset from each other.
    [2]
    2. Forage harvester according to claim 1, characterized in that the at least first material as a carrier element (10) is a weldable material.
    [3]
    3. Forage harvester according to claim 1, characterized in that the at least second material as the material of the wear element (9) is a hard metal.
    [4]
    4. forage harvester according to claim 1, characterized in that the at least second material as the material of the wear element (9) consists predominantly of a bonding matrix with embedded non-oxide ceramic materials.
    [5]
    5. forage harvester according to claim 1, characterized in that the at least second material as a material of the wear element (9) is a mixture of carbides or oxides or nitrides of the base materials tungsten, aluminum, silicon, zirconium, or boron or a mixture or parts thereof ,
    [6]
    6. forage harvester according to claim 1, characterized in that the at least second material of the wear element (9) consists predominantly of embedded in a nickel alloy matrix tungsten carbides.
    [7]
    7. forage harvester according to claim 1, characterized in that the at least second material as a material of the wear element (9) is a sintered metal.
    [8]
    8. forage harvester according to claim 1, characterized in that the at least one stop piece (8) with the friction bottom (7) is welded.
    [9]
    9. forage harvester according to claim 1 and 8, characterized in that a plurality of stop pieces (8) on the bottom plate (14) of the Reibbodens (7) in at least two approximately perpendicular to the crop flow direction (A) extending and spaced rows (18) are arranged and the form free spaces (11).
    [10]
    10. forage harvester according to claim 1, characterized in that the friction bottom (7) as a replaceable component with the chopper housing (2) enters into a detachable connection.
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    同族专利:
    公开号 | 公开日
    DE102012102551A1|2013-09-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2640334A1|1976-03-25|1978-03-16|Mengele & Soehne Masch Karl|Chopper harvester drum with discs and blades - has ejector scoops fixed by brackets with edges rotating close to housing floor|
    DE8703479U1|1986-12-08|1987-07-23|Veltmann, Bernhard, 4530 Ibbenbueren, De|
    EP0538599A2|1991-10-24|1993-04-28|Biso B.V.|Chopper|
    DE20000454U1|2000-01-12|2000-03-02|Rutz Georg|Forage harvester with a friction floor|
    US6327970B1|2000-03-06|2001-12-11|John C. Kooima|Grain husk cracking plate|
    DE102005053049A1|2005-11-04|2007-05-16|Kurz Tribotechnik|Comminution roller for post comminution of grain produce passing through ejection channel of harvester e.g. field straw cutter has base body whereby punch marks and cutting edges are provided for conveying and comminution of harvested crop|
    DE202009000431U1|2009-01-12|2009-03-26|Kurz Tribotechnik Gmbh & Co. Kg|Crushing disc, crushing roller and shredder for harvesters|
    DE102020121503A1|2020-08-17|2022-02-17|Kurz Tribotechnik Gmbh & Co. Kg|Cutting floor for a harvesting machine, in particular a forage harvester, crushing device with such a cutting floor and method for producing the same|
    法律状态:
    2020-12-23| MM| Lapsed because of non-payment of the annual fee|Effective date: 20200331 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE201210102551|DE102012102551A1|2012-03-26|2012-03-26|Chuff-cutter has support element that is made up of primary material while wear element is made up of secondary material|
    DE102012102|2012-03-26|
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