瑞典专利SE1251007A1 Plate, plate tool and agricultural implements with such plate tool

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专利摘要:
12 SUMMARY This document discloses a plate (101) for tillage, comprising a disc having a peripheral substantially circular cutting edge (1017) and a central hub portion (1011) having means for mounting the plate in a tool holder to make the plate rotatable about a axis of rotation (Ar), one machining portion (1012), which is located radially outside, and connects to, the hub portion (1011). The machining portion (1012) has a plurality of radial waves which, with an inwardly decreasing axial extent, extend from the cutting edge (1017) towards the hub portion (1011). At the cutting edge (1017), the waves have an axial amplitude that is at least 5%, preferably at least 10% or at least 15%, of a radius (Rt) of the plate. Publication image: Fig 3 201 24391 o 914 mwæit- »orgafiißêlrmmv / xtcsaras1ø l:> - 1 / :: rei9c> f> jM2 ~ i -: if: s9fsæ5j , <> p |» caironiæxtuuoPN rim
公开号:SE1251007A1
申请号:SE1251007
申请日:2012-09-10
公开日:2014-03-11
发明作者:Crister Stark；Mikael Edvinsson
申请人:Vaederstad Verken Ab；
IPC主号:

专利说明:

The invention is defined by the appended independent claims.
Embodiments appear from the dependent claims, from the following description and from the drawings.
According to a first aspect, there is provided a plate of pre-ground working, comprising a disc having a peripheral cutting edge and a central hub portion, which has means for mounting the plate in a tool holder to make the plate rotatable about an axis of rotation, and a machining portion located radially outside , and connects to, the hub portion. The machining portion has a plurality of waves which, with an axially decreasing axial extent, extend from the cutting edge towards the hub portion. At the cutting edge, the waves have an axial amplitude which is at least 5%, preferably at least 10% or at least 15%, of a radius of the plate.
By "central hub portion" is meant a portion which is not necessarily located exactly centrally, but which is central enough for the plate to be able to rotate about it.
The axial amplitude of the working portion provides a plate which is securely driven to rotate as it is pulled through the ground.
With an increased amplitude, an increased contact length is achieved between the plate and the ground in view of a given movement of an agricultural implement that supports the plate.
The cutting edge may have at least one recess extending radially inwardly from the cutting edge.
The waves may have a wavelength, when rotating about the axis of rotation of the plate, corresponding to about 18 ° - 90 °, preferably 35 ° - 90 °, or about 36 ° - 45 °.
With a reduced wavelength, an increased contact length between plate and ground is achieved in terms of a given movement of an agricultural implement that supports the plate.
A plane perpendicular to the axis of rotation can be defined by a transition portion, where the radially outer portion of the hub portion meets the radially inner portion of the machining portion, the machining portion being located in its entirety on one axial side of said plane.
A distance between the cutting edge and the transition portion can be substantially constant.
ZOl 2 (iQ-fl O 9.14 ViLNOOrgaFliášsåliOrN / ÄDElQÉšålAlDÅ / iÉíRK N Al- "í l- ~ ï“, <' ”l" liii lT _, _ hl0lïarrli |} / SÉ 2' l O. *} 95íš5 2C) 12O9O5Mí2'l Oíåšlßfšfüm / Äjit) líczltioltiOl ° hl_ciOC 10 15 20 25 30 The waves can, at a first axial extreme position, be delimited by a first imaginary surface, which has an angle of less than 90 ° relative to the axis of rotation; and the waves at a second axial extreme position are delimited by a second imaginary conical surface, which has an angle greater than 60 ° relative to the axis of rotation.
The waves can at the first and / or at the second axial extreme position touch the conical surface associated with the respective extreme position.
The waves may have radially extending line contacts on at least one of the first and second conical surfaces, respectively.
According to a second aspect, there is provided a method of prefabricating a plate as described above, comprising providing a substantially circular and preferably planar plate blank, and press-forming the plate blank to form the plate.
According to a third aspect, there is provided a tool for tillage, comprising a holder having a first fastening device for fastening to a tool carrier of an agricultural implement and a second fastening device for rotatably fastening a plate as described above.
The tool may comprise suspension means for suspending the disc relative to a frame of an agricultural implement supporting the tool.
According to a fourth aspect, an agricultural implement for tillage is provided, comprising at least one tool as described above.
The agricultural implement may have at least two rows of tools, which have substantially parallel axes of rotation.
The agricultural implement may further comprise at least one support device for controlling a working depth of said tool.
In the case of the agricultural implement, at least one of the plates may be set so that the axis of rotation of the plate forms an acute angle with the transverse direction of the agricultural implement.
At least one of the plates can have an individually adjustable cutting angle in at least one dimension. 201 ÉZ-ÜQ »l 0 9. 'I 4 Vïl-. Fi uhloOrganlsatlf) HWÄDEÉl'åïš" läf lJ ~~ / åšfål <íï l l, l B l'ï * / ~ YI "E; ' i ' l ”l' ___ i .l (1l * 'arrl i l _ / 5; Ûš'L ~ Ã' 2 'I (kiíåööíå ﬁ äf)' l ëOíštflfån 05958“ App i icëšlílräfl textwn ﬁ ö i ”l BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic perspective view of an agricultural implement in the form of a disc implement.
Fig. 2 is a schematic exploded view of a tool holder for using a disc tool.
Fig. 3 is a schematic perspective view of the tool holder in assembled condition.
Fig. 4 is a sectional view of a plate.
Description of embodiments Fig. 1 shows an agricultural implement 1 in the form of a disc implement having disc tools and steel roller, which is designed to be towed after a towing vehicle (not shown), such as a tractor. The agricultural implement comprises a frame 11, a roller 4, wheels 14 for transport, tillage tools, here in the form of disc tools 10. The frame 11 may comprise a left section 11aL and a right section 11aR. Furthermore, the frame 11 may comprise respective well frame sections 11bL and 11bR, respectively. By dividing the frame 11 into left sections 11aL, 11bL and right sections 11aR, 11bR, it is possible to fold the implement from a working position (Fig. 1) to a transport position (not shown), where the width of the implement can be significantly smaller than in the working position.
It will be appreciated that the agricultural implement may comprise a single complete frame; a split frame with one, two, three, or more folding sections. In all cases, tillage tools 10, 13 may be attached directly to the frame, or to an auxiliary frame, as is the case with the roller frame shown in Fig. 1.
It will also be appreciated that the agricultural implement may include additional tools, such as harrow tines, leveling tools, etc.
Fig. 2 shows an exploded view of a plate tool 10, comprising a plate 101, an arm 102, which has an upper portion 102a and a lower portion 102d, and a holding body extending therebetween, which may be straight or slightly curved. In the example shown, the holder body has an upper substantially straight portion 102a and a lower substantially straight portion 102c. The upper and lower portions 102a, 102c meet at a curved portion 102b. With such holders, 201 2-09 io 'i 4 v: vtioorganisatiørnv / totäi <: =; i; f tLnM / i : Rakan, f « z, -s ra« ":" ff: trnmtior-arlaaiywsiëawi ofaefszzfswofi 2o9oæ ___ 21oss>: sssf¿ __. f ppiißa ~ ti <> fit ﬁ f> PN om; Each plate 101 may be individually suspended relative to the frame 12. Alternatively, two plates may be suspended on the same holder.
At the upper part 102a a frame fastening is arranged. This device may, as illustrated, comprise a pair of substantially L-shaped profiles 103, 104, which are joined by a releasable joint, here in the form of a screw 109 and bolt 108, which engage holes in flanges projecting from the respective L-profile. The L-profile 103 can be joined to the upper part 102a by means of welding, alternatively the parts can be formed in one piece. The L-profiles can be designed in relation to the beam 12 from which the plate tool is to be supported, that a resilient attachment relative to the beam 12 can be provided. In the example shown, such a resilient attachment comprises four cylindrical rubber bodies 111, the L-profiles 103, 104 being arranged to enclose the square profile of the beam 12 with an displacement of about 45 ° in a plane perpendicular to the longitudinal direction of the beam 12, the rubber bodies 111 being arranged in the triangular spaces formed between the outer surface of the beam 12 and the inner surface of the L-profiles 103, 104.
At the lower part 102d a plate holder is arranged. This plate holder may comprise a shaft 105, which is releasably fixed in a recess at the lower portion 102d of the arm 102. In the embodiment shown, the shaft 105 is fixed by means of a locking pin 110a, which is inserted into the corresponding pin hole 110b in the lower portion and into a pin hole 105a in the shaft.
In the embodiment shown, the shaft has two portions: a portion which is insertable into a recess 110c in the lower portion 102d of the arm 102 and a portion which is insertable into a bearing unit 106. The two portions meet at an angle which may be less than 180 ° and greater than 135 °, preferably greater than 150 °, greater than 160 ° or greater than 170 °.
As shown in Fig. 2, the lower portion of the arm 102 has three pin holes 110b, which extend at different angles relative to the axial direction of the recess 110c.
By turning the shaft 105 inserted in the recess 110c so that its pin hole 105a is aligned with one of the three pin holes 110b, the shaft can be set in three different angular positions. Through the angled portion of the shaft 105, the axis of rotation Ar of the plate 101 will be moved relative to the angular position of the shaft 105. 2201 2--091-11 o 9.1 4 vrvrlocxt; nis; al: i <> lrl \ / Aií> r1st ", r r;> ~ / f :: Rkri N Awr ﬂ lafyrrfi rrrvtvoifaffialyxsrzxz i cißosfsfnïzot: zososswuz 'i of The bearing unit 106 is mounted at the free end of the shaft 105. The bearing unit 106 may comprise a bearing, for example in the form of a rolling bearing or a sliding bearing, and a hub plate, which may have means In the example shown, the hub plate has threaded holes, for bolts or screws 107, which are passed through corresponding holes in the plate 101 and mounted in the threaded holes of the hub plate.
Fig. 3 shows the disc tool 10 in assembled condition. The frame attachment is mounted, but without a beam 12. The axis of rotation of the plate is indicated by the line Ar.
As shown in Fig. 3, the axis of rotation Ar of the plate is not parallel to the beam 12. The axis of rotation Ar may have an acute angle relative to an axis parallel to the beam 12. Such an acute angle may be seen in a vertical plane and / or in a horizontal plane. .
Fig. 4 shows a sectional view of a plate 101. The plate 101 may be formed of a substantially flat piece of metal, for example steel. The plate may comprise a hub portion 1011, which may be substantially rotationally symmetrical about the axis of rotation Ar of the plate (with the exception of the presence of, for example, mounting means, here exemplified by holes for mounting screws or bolts 107).
The hub portion 1011 may have an outer portion which forms a transition portion 1016 at which the rotational symmetry ceases, seen in the radial direction. A machining portion 1012, which is located outside the hub portion 1011, seen in the radial direction, is thus not rotationally symmetrical about the axis Ar.
In the embodiment shown, the transition portion 1016 constitutes one axial end portion of the plate. For example, a plane P1 perpendicular to the axis of rotation Ar may be defined by a transition portion 1016 formed where the radially outer portion of the hub portion 1011 meets the radially inner portion of the machining portion 1012. The machining portion 1012 may then be located in its entirety on one axial side of said plane P1.
The machining portion 1012 has a plurality of radially extending waves, which at different angular positions about the axis of rotation Ar have axial maxima 1013 and axial minima 1014. The waves may extend from the transition portion 1016 to a cutting edge 1017. The cutting edge 1017 may be 201 09-- '0 0 9 . 'l 4 /: “imNcuOiganiszraiiornvlål ﬁ šlíiïäíêš fí /' ~ lf.D- ~ / EÉ-1l% l, < ii2« : vf1 'i "l ~: Niyriowii-miyxsstëilz-1 ofszirssivzfi , 2 * i ossi ﬁ si; Appu <> aii <> ntaxrmoi ﬂ iidot; 10 15 20 25 30 tapered in radial direction outwards starting at a thickness corresponding to the wall thickness of the plate.
In addition to extending radially, the waves also have an axial | amplitude, which may be greatest at the cutting edge 1017 and at least, i.e. substantially zero, at the transition portion 1016. The waves have, at the cutting edge 1017, an axial amplitude L which is at least 5%, preferably at least 10% or at least 15%, of a radius Rt at the plate. The amplitude L is increasing radially outwards from the transition portion 1016 to the cutting edge 1017, seen in a cross section containing the axis of rotation Ar. This increase may be substantially linear (as in Fig. 4) or curved. For example, the increase may follow a circular curve, an elliptical curve, a hyperbola or a parabola.
The waves may have a wavelength Å, when rotating about the axis of rotation Ar of the plate, which corresponds to about 65 ° - 90 °, preferably about 36 ° - 45 °. At a wavelength corresponding to about 36 ° the plate thus has 10 maxima 1013 and minima 1014. At 45 ° wavelength the plate has 8 maxima 1013 and minima 1014, at 72 ° wavelength the plate has 5 maxima 1013 and minima 1014 and at 90 ° wavelength the plate has 4 maxima 1013 and minima 1014.
The waves can be continuous, seen in rotation around the axis of rotation Ar, whereby they follow, for example, a sine function, or discontinuous and have a shape similar to a sawtooth curve, triangular wave or square wave.
As shown in Fig. 4, the entire amplitude L of the waves can be present only on one axial side of the transition portion 1016. A plane P1 which is perpendicular to the axis of rotation Ar is defined by one axial extreme of the transition portion 1016.
Seen in the radial direction outwards, at least the maxima 1013 of the machining portion 1012 extend away from the plane P1. The minima 1014 of the machining portion can also extend away from the plane P1, but to a lesser axial extent than said maxima 1013, seen at a given radius. In the example shown in the figures, the machining portion is delimited by two conical surfaces: minimum 1014 is defined by a first imaginary conical surface C1 with an angle V1 relative to the axis of rotation Ar and maximum 1013 is defined by a second imaginary conical surface C2 with an angle V2 relative to the axis of rotation Ar. At the first and / or at the second axial minimum / maximum 1014, 1013, 201: z ﬂ os - i o 9.14 / r , ___: lo <> rg; s -: «. lti <>. ~ l v, 1s i:> i; -j¿r-: stziua» vizaraktiN / i¿x : 1>, < ”i" r, -: N 'rmiwarniiyxssi: in waofafjsraxzrn zosaosjjnzr riffssieszsßn / xjgpimarioni; @> 10 waves tangent to the imaginary surface C1, C2 associated with the respective minimum / maximum.
The first angle V1 may be less than 90 ° relative to the axis of rotation Ar and the second angle V2 may be less than the first angle V1 but greater than 60 ° relative to the axis of rotation Ar.
A plate 101 as shown herein can be made by compression molding a substantially circular disc blank into a tool adapted to the tool. The cutting edge 1017 and mounting holes may be formed before or after such compression molding.
It will be appreciated that the waves may extend radially or obliquely inwardly, i.e. seen in a plane perpendicular to the axis of rotation Ar having an angle between the radius of the plate and the extent of the wave. Such angles can be in the order of 0.5 ° - 30 °. 20 'l 2 - O9 ~' l O 'l 4 / 1 > ___ l lrJ () a ri lsäti <> rl \ // A Dlitï {So “lÄfÄIÅJ - V RKE i l /« lÉfš lïï ”/ ' l"' ¿{i l 'l' _ "__ l | 0Ffarïlilyßšåfïål O59585 20l 209 () 5 ____ 2'l OägötšömApplicïaticrTteXtm_ÅCDl ° l l.rllolz

权利要求:
Claims (16)
[1]
A plate (101) for grounding, comprising a disc having: a peripheral cutting edge (1017) and a central hub portion (1011), having means for mounting the plate in a tool holder to make the plate rotatable about an axis of rotation (Ar), and a machining portion (1012), which is located radially outside, and connects to, the hub portion (1011), characterized in that the machining portion (1012) has a plurality of waves extending inwardly decreasing axial extent from the cutting edge (1017) towards the hub portion (1011). ), and that the waves, at the cutting edge (1017), have an axial amplitude which is at least 5%, preferably at least 10% or at least 15%, of a radius (Rt) of the plate.
[2]
The plate of claim 1, wherein the cutting edge (1017) has at least one recess extending radially inwardly from the cutting edge (1017).
[3]
A plate according to claim 1 or 2, wherein the waves have a wavelength (Å), when rotating about the axis of rotation (Ar) of the plate, corresponding to about 18 ° - 90 °, preferably 35 ° - 90 °, or about 36 ° - 45 °.
[4]
A plate according to any one of the preceding claims, wherein a plane (P) perpendicular to the axis of rotation (Ar) is defined by a transition portion (1016), the radially outer portion of the hub portion (1011) meeting the radially inner portion of the machining portion (1012), and the machining portion (1012) being located in its entirety on one axial side of said plane (P).
[5]
The plate of claim 4, wherein a distance between the cutting edge (1017) and the transition portion (1016) is substantially constant.
[6]
A plate according to any one of the preceding claims, wherein the waves, at a first axial extreme position (1014), are delimited by a first imaginary surface (C1), 201 2 ~ ll9 ~ l O 9.14 /. A__NOOrgarl1391ïiönWÄlDEiRÃSTDALT-VEÉRiíEÉN if l. šl.l-> ß 'l'í ~'. i l'l ', Ml l0FamilyßFÄQ1O595íš5 2 () 12 () É3O5 ____ V2 "l059585 ~ App | 1cätlörli1f2> 10 15 20 25 30 10 which has an angle (V1) which is less than 90 ° relative to the axis of rotation (Ar) and wherein the waves at a second axial extreme position (1014) are delimited by a second imaginary conical surface (C2), which has an angle (V2) which is greater than 60 ° relative to the axis of rotation (Ar).
[7]
A plate according to claim 6, wherein the waves at the first and / or at the second axial extreme position (1014, 1013) touch the conical surface (C1, C2) associated with the respective extreme position.
[8]
A plate according to any one of claims 6 or 7, wherein the waves have radially extending line contacts at least one of the first and second conical surfaces (C1, C2), respectively.
[9]
A method of manufacturing a plate according to any one of the preceding claims, comprising: providing a substantially circular and preferably planar plate blank, and press-forming the plate blank to form the plate (101).
[10]
A tool (10) for soil tillage, comprising: a holder (102) having: a first fastening device (103, 104) for attachment to a tool carrier (12) of an agricultural implement (1) and a second fastening device (10, 106) for rotatable attachment of a plate (101) according to any one of claims 1-8.
[11]
A tool according to claim 10, further comprising suspension means (111) for suspending the plate (101) relative to a frame (11, 12) of an agricultural implement (1) carrying the tool (10).
[12]
Agricultural implements (1) for tillage, comprising at least one tool (10) according to claim 10 or 11. '20 'l 7. »09--' l 0 9.14 /; Mi lOO rgjalï lsejltllörllèff-'VÄJ lfí l All-Väl F i A EÄPA TE pil) “Nc ﬂ ïåarní l _ / S 'l 059ši85 20' l 20 9 0 LLQ 1 05958E5 ____ / ;.) plirl ﬂ tioril1e> 10 15 11
[13]
Agricultural implement according to claim 12, wherein the agricultural implement (1) has at least two rows of tools (10), which have substantially parallel axes of rotation.
[14]
An agricultural implement according to claim 12 or 13, further comprising at least one support device (13, 14) for controlling a working depth of said tool (10).
[15]
An agricultural implement according to any one of claims 12-14, wherein at least one of the plates (101) is set so that the axis of rotation (Ar) of the plate forms an acute angle with the transverse direction of the agricultural implement.
[16]
An agricultural implement according to any one of claims 12-15, wherein at least one of the plates (101) has a cutting angle individually adjustable in at least one dimension. 20l2 ~~ 09- * l0 9-14 Viisllloorgarnsatiøfliv / xniiafßrß r> ~ / §if, f a i ==. « * Rr; -; rrr ' _ ﬂ__ noi =' arrfliiyilslïxz1 oaossfsizcifi2090531 of; s-> s:, ni @; r lu0 <:

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同族专利:

公开号 | 公开日

SE536761C2|2014-07-22|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

法律状态:
2016-05-03| NUG| Patent has lapsed|

优先权:

申请号 | 申请日 | 专利标题

SE1251007A|SE536761C2|2012-09-10|2012-09-10|Plate, plate tool and agricultural implements with such plate tool|SE1251007A| SE536761C2|2012-09-10|2012-09-10|Plate, plate tool and agricultural implements with such plate tool|

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