• 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:
    drive roller for the draper conveyor belt of a harvest head. a harvester head with a cutter bar and a draper assembly has a drive roller driven conveyor draper conveyor with a cylindrical roller body having an outer surface surrounding a roller rotation axis to engage an inner drive surface of a conveyor belt wrapped around it. The roller has a plurality of ribs arranged on the outer surface of the roller body extending along a body part in an axial direction and angularly spaced around the outer surface. the ribs have a height of less than 6 mm and a width of less than 6 mm arranged such that the ribs do not engage any recesses in the drive surface of the conveyor belt.
    公开号:BR102012013988B1
    申请号:R102012013988-0
    申请日:2012-03-16
    公开日:2019-01-29
    发明作者:Daniel Cormier；Francois R. Talbot；Keith A. Johnson；Neal J. Stoffel
    申请人:Macdon Industries Ltd.；Kondex Corporation；
    IPC主号:
    专利说明:

    This invention relates to a conveyor roller for a conveyor arranged to carry harvesting material.
    BACKGROUND OF THE INVENTION
    Draper harvesting heads generally include a harvesting head frame, an elongated cutter bar along a front edge of the frame including a cutter beam that carries a plurality of knife guards to guide reciprocating movement of a knife. through a front edge of the cutter bar. A draper assembly is also installed on the harvesting head including a first and second draper guide roller, each arranged at a respective end of the draper assembly, spaced side by side along the cutter bar with a geometric axis of each roller extending. substantially at right angles to the cutterbar, a draper conveyor belt forming a continuous loop of flexible material wrapped around the rollers to define a front edge of the conveyor belt adjacent the cutterbar, a rear edge of the conveyor belt spaced at the rear of the cutterbar. cutter bar, an upper portion of the conveyor belt on top of the roller and a lower portion of the conveyor belt under the rollers. The cut crop thus falls back over the upper section of the conveyor belt and is carried longitudinally to the harvesting head. Generally, between the draper rollers is provided a support plate assembly for the upper stretch of the draper conveyor belt to prevent bending. The harvesting head of this type may simply be used to form a cut row in which case the material is transported to a harvesting head discharge opening and discharged from it onto the ground. Harvest heads of this type may also be used to feed a combined harvester, so that materials are transported to an adapter element positioned in the discharge head discharge opening to transport the discharge opening materials into the feeder housing of the harvesting head. Combine harvester. Also in addition, harvest heads of this type may be used for forage conditioners in which material from the discharge opening is conveyed to milling cylinders. It will be appreciated, therefore, that the use of the harvesting head is not limited to particular types of agricultural machines, but can be used with any such machine in which it is necessary to cut a standing crop and to transport that crop cut longitudinally to the crop head. harvest for its operation. The draper conveyor belt usually comprises a fabric which is coated with a rubber material which is then vulcanized after conformation of the fabric to the required shape and after attachment of transverse battens thereto. The arrangement shown in US Patent 5,459,986 (Talbot) issued October 24, 1995 and assigned to the present applicants has achieved significant success and has been used for many years. It provides a seal between a lower surface of an element extending at the rear of the cutter bar and a leading edge portion of the upper surface of the conveyor belt. Not shown in the patent indicated above is the conventional guiding arrangement to prevent misalignment of the draper conveyor belt over the rollers and this is provided by means of a drawstring located on the underside of the conveyor belt that extends into a groove in the roller.
    An alternative arrangement is shown in US Patent 7,472,533 (Talbot et al.) Issued January 6, 2009 also to the present applicants and originally published April 24, 2008. This provides a harvesting head with a cutter bar and a conveyor belt. draper carrier with a plurality of transverse battens and an elastic band across a front edge of the outer surface in front of the front end of the battens to cooperate with a rearward projecting member of the cutter bar extending over the upper portion of the draper carrier mat to engage with the upper surface of said strip to form a seal to inhibit entry between the cutter bar and the draper conveyor belt of materials carried by the cut crop. A lanyard is also provided on the conveyor belt on the surface opposite the strip within the width of the strip. The arrangement may be symmetrical with a strip at each of the front and rear edges tied by the battens extending between them, with cords at each edge opposite the front and rear strips respectively.
    The expert disclosures indicated above are incorporated herein by reference or may be referred to for constructional details not provided herein.
    SUMMARY OF THE INVENTION It is an object of the invention to provide an improved drive roller arrangement to provide improved drive for the draper conveyor.
    According to the invention there is provided a drive roller for a conveyor arranged to carry harvesting material, comprising: a metal cylindrical roller body having an outer metal cylindrical surface surrounding a rotational axis of the roller to engage with a roller surface. driving a conveyor belt wrapped around it; wherein a plurality of wear-resistant hard elements on the outer metal surface of the roller body to be elevated at a height from the metal surface; the raised elements being arranged in a pattern on the metal surface to leave areas of the metal surface between the raised elements that are free of the raised elements; elements having a height from the metal surface that is less than 6 mm; wherein the raised elements comprise a material which is, relative to the cylindrical outer metal surface, a wear-resistant hard material; and wherein the material comprising the raised elements is placed as an additional material on the cylindrical metal outer surface of the roller. The arrangement here provides the advantage of improved drive roller drive to a track.
    Preferably, the raised elements are elongated in the form of ribs, ridges or teeth applied to the surface of the roller. The term "ribs" is used below to identify these elements, but is not intended to indicate any particular shape or orientation of the elements.
    Preferably, the ribs extend along the roller where they are not completely in a radial plane of the roller, so that each extending rib has a component extending along the draper conveyor belt to frictionally engage with it. . Typically the ribs are parallel to the geometry axis, but they may be helical or may have more complex shapes including steps or waveforms. Also a diamond or cross pattern can be used.
    The ribs extending along the roller are preferably spaced angularly around the roller.
    Preferably, the ribs are arranged only at the ends of the rollers such that each end of the roller includes a respective rib section extending from the end of the roller to a spaced position of the rib section at the other end.
    Preferably, the ribs have a height of less than 6 mm and more preferably in the range of 1 mm to 3 mm. Preferably, the ribs have a width of less than 6 mm and more preferably in the range of 1 mm to 3 mm.
    Preferably, the ribs have an angular spacing around the roller greater than 10 degrees and more preferably in the range of 10 degrees to 45 degrees.
    Preferably, the outer surface is formed of steel and the ribs are formed of a material placed on the steel such as by laser coating using a coating material that creates a carbide content of greater than 30% and more preferably greater than 50%. %. The upper limit in practice for carbide concentration is approximately 70%. Once this threshold is exceeded, the amount of binder is not sufficient to create the matrix needed to bond the elements together.
    Also, other hard materials can be used as a substitute for tungsten carbide to create raised ribs or elements.
    Other technologies that can be used to obtain the raised elements include welding (tig or mig), thermal spraying, brazing, machining, boring or stamping. The invention also includes combining the roller with a conveyor belt to form a draper assembly having a continuous belt of a fabric material having an inner surface to engage with a plurality of rollers and an outer surface to engage with a material to be carried on. the same; and a drive roller as defined above wherein the ribs having a height and width arranged such that the ribs do not engage corresponding recesses in the inner surface of the belt whose surface is free of recesses shaped and arranged to receive the ribs. The invention also includes a harvesting head for cutting and transporting a standing crop comprising: a harvesting head frame; an elongate cutter bar arranged along a front edge of the frame; a knife mounted on the cutterbar to mow the standing crop; a draper assembly mounted to the harvesting head frame at the rear of the cutter bar such that the crop cut falls onto the draper assembly for transportation longitudinally to the harvesting head; the draper assembly including a first and second draper guide roller, each arranged at a respective end of the draper assembly, spaced side by side along the cutter bar with a geometric axis of each guide roller arranged substantially at right angles to the bar. cutter; the draper assembly including a draper conveyor belt forming a continuous loop of flexible material wrapped around the rollers to define an upper portion of the draper conveyor belt over the rollers and a lower portion of the draper conveyor belt underneath the rollers and to define an outer surface of the draper conveyor that faces out of the loop where the outer surface forms the upper surface of the upper portion and the lower surface of the lower portion and an opposite inner surface of the draper conveyor that faces the inside of the loop ; the draper conveyor belt comprising a continuous conveyor belt of a fabric material having an inner surface for engaging with a plurality of guide rollers and an outer surface for engaging with a material to be conveyed thereon; where the draper conveyor belt is as defined above.
    BRIEF DESCRIPTION OF DRAWINGS
    An embodiment of the invention will now be described in conjunction with the accompanying drawings in which figures 1 to 5 are taken from the above-cited prior art patent 7,472,533 and are included for full coverage only: Figure 1 is a top plan view of the part of a prior art harvesting head. Figure 2 is a cross-sectional view along lines 2-2 of Figure 1 showing the front of the harvesting head and draper conveyor belt. Figure 3 is a cross-sectional view along lines 2-2 of Figure 1 showing the rear of the harvesting head and draper conveyor and the cooperation of the rear guide cord with a groove in the roller. Figure 4 is a cross-sectional view through an edge of the conveyor belt made only at the location where there is no transverse batten. Figure 5 is a cross-sectional view through an edge of the conveyor belt made in a transverse batten only. Figure 6 is a side elevation view of a roller according to the present invention for use in the harvesting head described above. Figure 7 is a cross-sectional view through the roller of Figure 6. Figure 8 is a cross-sectional view through the roller of Figure 6 on an enlarged scale showing the shape of one of the ribs.
    In the drawings, like reference numerals indicate corresponding parts in the different figures.
    DETAILED DESCRIPTION The following description is made from the prior art patent indicated above. Only those parts of the harvesting head that are of importance to the present invention are shown in the figures indicated above and the remaining parts of the harvesting head including frame structure, drives, ground wheels and the like are omitted as These are well known to those skilled in the art. The harvesting head therefore comprises a frame, an element of which is indicated by 10 in the form of a beam extending horizontally and forwards from a rear support frame structure (not shown) to a cutter bar assembly. generally indicated 11 to support this cutterbar assembly. The beam 10 forms one of a plurality of such beams arranged at spaced positions along the length of the harvesting head frame to support the cutter bar assembly 11 as an elongate structure across the front edge of the harvesting head. The cutter bar comprises a generally C 12 beam providing structural support for the cutter bar with the C shape beam being welded to the front ends of the forward extending beams 10. The C 12 shape beam includes an upper plate portion 13, a lower plate portion 14 and a front plate portion 15 which converges from the upper and lower plate portions toward a front apex 16 forming a point further from the beam 12. At apex 16 a longitudinally extending bar 17 is welded forming a support for a plurality of knife guards 18, of which only a few are shown in Figure 1 for convenience of illustration. Knife guards are certainly of well known construction and their shape is shown only schematically. The knife guards carry with them a sickle knife assembly 20 having a longitudinally alternating bar 21 driving a plurality of triangular knife blades 22 that seat on the knife guards and toggle back and forth through the knife guards in one action. cutting Again this construction is well known and therefore detailing is not required. The cutterbar support beam 12 also carries an elongated gusset 23 which is welded to the upper plate portion 13 on the underside of it at the front edge thereof, with the gusset extending downwardly and then forming a support plate 24 extending forward of it toward the apex 16. The draper assembly generally indicated by DA includes a first draper support roller 30 and a second draper support roller (not shown). One of these rollers is driven by a drive motor (not shown) to perform draper rotation in conventional mode. The draper assembly additionally includes a draper conveyor belt 32 in the form of a loop or continuous web of fabric which is wound around the rollers at respective ends to form an upper portion 33 of the draper conveyor belt over the rollers and a lower portion 34 of the conveyor belt under the rollers. The rollers are thus spaced longitudinally to the cutter bar and arranged with their axis of rotation parallel and at right angles to the cutter bar. The draper conveyor 32 has an inner drive surface 304 engaging with an outer surface of roller 30. The draper conveyor thus includes a front edge 35 of the upper portion which is adjacent to the cutter bar and a rear edge 36 of the upper portion 33 which it is distant from the cutter bar and spaced behind it, thereby defining between them a flat surface of the upper section for transporting the crop longitudinally to the harvesting head. Bottom leg 34 also includes a front edge 37 and a rear edge. The draper conveyor belt includes a plurality of conventional transverse battens 39 which help to carry the crop along the draper conveyor belt. Each edge of the draper conveyor may include a conventional folded joint to define a portion of the conveyor material that is folded back as indicated by 40, with that folded back being folded back over the fabric layer. and attached to the conveyor belt by the vulcanization effect on conveyor belt manufacture. The upper stretch of the draper conveyor belt is supported by a support plate assembly 45 that includes a front plate and includes a center plate and rear plates that are not shown for illustration convenience. The front plate includes a horizontal top plate portion 46, shown with dashed lines in Figure 1, which lies below the upper portion of the draper conveyor belt adjacent the front edge to support that sliding moving front edge over the upper surface of that plate. Support plate 46 further includes a vertical plate portion which extends downwardly from a leading edge of the upper plate portion (not shown in the figures). At a lower edge of the vertical plate part is provided a smaller horizontal plate part, thereby forming the generally C-shaped front support plate to provide structural strength, so that the support plate is essentially self-supporting mounted. on mounting brackets (also not shown).
    The rollers 30 are supported by the support plate 46. Further details of the clamps and support elements are described in the Talbot patent indicated above. The length of the support 25 is arranged such that the front edge 49 of the support plate is spaced behind the front edge 35 of the upper portion of the draper conveyor belt. Further, the front end of the rollers 30 is spaced behind the front edge 35 of the upper conveyor belt portion. This indentation of the front edges of the support plate element and rollers enables a portion 70 of the front edge of the draper conveyor to swing out beyond the support provided by the elements. The beam 12 of the cutter bar is shaped so that the upper plate portion 13 extends backward to a rear edge 71 overlapping part 70. The rear edge 71 is therefore located in a position behind the front edge 35 of the conveyor and in a position in front of the front edge 49 of the support plate and the front ends 65 of the draper rollers. This draper conveyor portion, therefore, which engages with the lower face 72 of the upper plate portion 13 is not supported on its lower face and is therefore free to bend downward if it is pressed down by the presence of accumulating material. on the lower surface 72. The upper plate portion 13 of the beam 12 is substantially horizontal, which is parallel to the generally horizontal surface of the upper portion. The cooperation, therefore, between the surface 72 of the upper plate portion 13 and the upper surface of the draper conveyor belt in part 70 provides a seal that inhibits the tendency of materials to pass between the draper conveyor belt and the cutter bar. This seal therefore inhibits the development of materials within the C-shape of the cutter bar and between the upper and lower sections of the draper conveyor belt and around the draper rollers which can certainly cause damage.
    At the rear edge 36, the draper conveyor belt is guided over the draper roller by a V-groove 30A in the roller 30 into which a V 75-shaped guide rib extending through the rear of the conveyor belt projects from the rear of the conveyor belt. inner surface of the conveyor belt along its full length. The construction of the draper of the present invention is shown in figures 4 and 5. Thus the draper of the present invention is symmetrical in that the draper can be inverted by rotating the draper so that the front edge is rotated to become the rear edge and vice versa. -verse. Thus, only the front edge is shown in figures 1, 4 and 5 and with this it is understood that the rear edge is exactly symmetrical. Thus, in Figure 4, there is shown a part of the draper conveyor belt which includes a base layer or blade 80 which is formed of a fabric blade 81 which is folded at its edge 82 to form a part 83 which is folded back inward. above layer 81 to form an end edge 84 of folded back 83 that lies above the fabric of layer 81 spaced apart from edge 82. The conveyor belt carries a rubberized coating layer or infused in a conventional manner. At edge 82 is provided a strip 86 of an elastic material. The elastic material is preferably of the same construction as the rubberized liner so that it can be vulcanized with the conveyor belt structure and molded in place as part of the manufacturing process. The strip 86 has a leading edge 87 which lies on or immediately adjacent the edge 82 of the conveyor belt base layer. In the embodiment shown the front edge 87 of the strip exactly coincides with the edge 82. The strip includes a rear edge 88 spaced away from the edge 87 into the conveyor body. The strip has an upper surface 89 which is flat and smooth. Thus, the strip is rectangular with the side edges 87 and 88 being vertical and the upper surface 89 being horizontal. However, the strip may be shaped with the side edges 87 and 88 slanted or tapered.
    In the example shown the strip has a width of the order of 1 ”(25 mm) and a height of the order of 1/6” (4.0 mm). The strip thus rises from the upper surface of the base layer of the draper conveyor belt which is the upper surface of the folded back 83.
    On the underside of the draper conveyor belt is formed the cord 75 which is generally V-shaped, so that the sides are tapered down and inwardly to a lower surface 75A which is narrower than the base of the cord. The cord is located at a spaced position from edge 82, but underlies strip 86 so that the edge of the cord is spaced from edge 82 by a distance less than edge 88 of the strip.
    As shown in Figure 5 the conveyor belt also carries the battens 39 extending upwardly from the upper surface of the conveyor belt to an upper edge 39A which is significantly higher than the height of the strip 86. Each batten extends transversely across the draper conveyor belt to a position closely adjacent to the strip at respective side edges of the conveyor belt. Thus, each batten extends to an end edge 39B which is spaced from the side edge 82 by a distance greater than the spacing of the strip edge 88, so that the batten edge 39B is spaced from the strip edge 88. The battens 39 are integrally molded with the strip 86 by providing the portions 90 extending from the batten edge 39B to the edge 88 of the strip 86. These parts, as best shown in Figure 1, have a width equal to the width of the batten. batten 39 to which they are attached and a height (as shown in figure 5) equal to the height of the strip 86. These parts thus act to integrate the structure so that the battens connect to the strip to reduce the tendency of pullout battens away from the conveyor belt since the same elastic material forming the strip extends to the batten and thus is resistant to peeling or peeling from the base layer of the draper conveyor belt. In the example shown, lanyard 75 has a width at its base in the order of 1/2 ”(13 mm) and a height from the bottom surface of the conveyor belt in the order of 1/3” (8 mm). The center of the bead is spaced from edge 82 by a distance of the order of 2/3 ”(16 mm). This properly places the lanyard in a position on the conveyor belt to cooperate with the roller groove at the rear of the conveyor belt as best shown in Figure 3.
    Turning now to Figure 2, it will be noted that the side edge 88 of the strip is substantially coincident with the end edge 71 of plate 13, so that the total of strip 86 is below plate 13. The presence of strip 86 provides a improved sealing effect between strip surface 89 and surface 72 of plate 13 because of an increase in pressure between them. Moreover, the presence of the shoulder or edge 88 provides a raised surface standing above the conveyor belt surface to inhibit material penetration into the space between surfaces 89 and 72. Surface 89 is formed as a flat surface molded on top. of the elastic strap, so that the surface 89 may be shaped if required. Also, it is or may be smoother than the conveyor belt surface itself to provide an improved contact surface engaging with surface 72.
    It will be noted in Figure 2 that the front edge bead 75 is located in a spaced position ahead of the support plate edge 49 and in front of the roller end. Thus lanyard 75 on the front edge of the conveyor belt has no effect as it is not engaging with any roller or support plate components. However it will be noted that the lanyard 75 at the rear edge is fitted with a groove in the roller. In this way wear of the frame takes place in the strip 86 at the front edge and the cord 75 at the rear edge. These two components are worn in use so that the strip 86 at the rear edge and the lanyard 75 at the front edge remain not worn. Rotation of the conveyor belt when wear has become excessive thus allows the conveyor belt to continue in use while the rear edge strip 86 is offset for sealing at the front edge and the lanyard 75 is moved to the rear edge to provide guiding action.
    Turning now to the present invention as shown in Figures 6, 7 and 8 one or both rollers 30 and particularly the roller providing the drive inlet is shown and comprises a cylindrical roller body 301 having an outer drive surface of a generally cylindrical 302 surrounding a roller axis 303 of rotation to engage an inner drive surface 304 (shown in Figure 3) of the conveyor belt 32 wrapped around the roller. The drive surface 302 is modified by adding a plurality of ribs 305 arranged on the outer surface of the roller body, with the ribs 305 extending along at least a body part preferably generally in an axial direction. The ribs 305 extend from one end 306, 307 at the end of the roller effective drive surface to an intermediate position 308, 309. While the ribs may extend over the full length of the roller typically the ends 308 and 309 are spaced apart. from the other leaving a central section 310 of the roller which is devoid of ribs.
    The ribs are spaced angularly around the outer surface at a spacing angle A. The ribs have a height H and a width W. H is less than 6 mm and typically is in the range of 1 to 3 mm. W is less than 6 mm and typically is in the range of 1 to 3 mm. A is less than 45 degrees and typically is in the range of 10 to 45 degrees. The outer surface is formed of a steel plate wrapped around the geometric axis and the ribs are formed of a material provided on the steel. This may preferably be done by laser coating. Other technologies that can be used to obtain the raised ribs or elements include welding (tig or mig), thermal spraying, brazing, machining, boring, or stamping.
    Laser coating is a process in which a laser heat source is used to deposit a desired metal on a surface. The deposited material may be transferred to the substrate by one of several methods including powder injection, pre-placed powder on the substrate or by wire feed. The powder may be a matrix of tungsten carbide and bonding materials which preferably contain 60% or more tungsten carbide. However a suitable product can be obtained with a lower level of 30-40% tungsten powder, for example. Powders other than tungsten carbide, such as tool steel and quick steel powders that are also available, may also exhibit reduced wear, but to date none have been found to be as effective as tungsten carbide. Some of the other laser coating processes that use wire instead of dust can be used. Additional systems that use a cold spray hybrid with a laser assist are also provided.
    This provides fixed ribs that remain in place despite the significant frictional forces involved in driving the track onto the roller and also results in reduced roller wear at the ends where primary forces are applied between the belt and roller. For this purpose, the ribs are formed of a material having a carbide content greater than 30% and preferably greater than 50%. A carbide content greater than 50% is desirable to reduce wear and it may preferably be greater than 60% or 70%. It will be appreciated that the ribs must last for many hours in order to keep the frictional drive to the treadmill at the level required for the life of the system. The draper conveyor belt typically has two layers of fabric at the side edges, so the draper conveyor belt is thicker in this area. Thus, the provision of the ribs only in this area can provide the required drive that is more aggressive at the edges. Certainly it is necessary not only to provide the required wear characteristics, but also to provide an acceptable level of drive friction, bearing in mind that a positive drive using internal locking elements is not acceptable. Formerly rubber rollers have been proposed and widely used since metal rollers have been found to also be slippery when wet. In the present arrangement, the high wear characteristics of the added ribs ensure that the material does not wear fast enough that the roller reverts to an unacceptable smooth metal roller that is known to provide insufficient traction. The shape of the ribs is such that the upper surface is convex or se-micrylindrical as best shown in Figure 8. This shape of the rib profile depends on a number of factors including the powder used and process parameters and is difficult to determine. to control. However, typically the ribs do not have sharp edges on the sides and rely on the additional frictional engagement with the track surface rather than any locking engagement therewith. However, sharp-edged ribs such as rectangular or square cross-section may be acceptable. The inner surface of the belt is free of recesses shaped and arranged to receive the ribs. That is, the arrangement is not one where the ribs are intended to fit into slots in the track surface to provide positive drive between the track and the roller, but instead the ribs have a height and width arranged to be small in such a way. so that the ribs do not fit into corresponding recesses in the belt. Thus, the belt is basically smooth and any roughness or projections are not designed to fit the ribs into a positive coupling action.
    Thus the harvest head of the present invention for cutting and transporting a standing crop comprises the harvest head frame shown partially by 10, the elongate cutter bar 17 arranged along a front edge of the frame and the mounted knife 20 on the mower to cut the standing crop. The DA draper assembly is installed on the harvesting head frame at the rear of the cutter bar such that the cut crop falls onto the draper assembly for transportation longitudinally to the harvesting head. The DA draper assembly includes the first and second draper guide roller 30, each arranged at a respective end of the draper assembly, spaced side by side along the cutter bar with a geometry axis of each guide roller arranged substantially at right angles to each other. the cutter bar. The DA draper assembly further includes a draper conveyor belt 32 forming a continuous loop of flexible material wrapped around rollers 30 to define an upper portion 33 of the draper conveyor belt on top of the rollers and a lower portion 34 of the draper conveyor belt underneath. rollers and in order to define an outer surface of the draper conveyor belt that faces out of the loop.
    Other variations that may be used may include where the ribs are full length, where the ribs are arranged in multiple segments along the roller and where the ribs are spiral shaped.
    Since various modifications may be made to the invention as described hereinbefore, and many apparently very different embodiments thereof may be made within the spirit and scope of the claims without departing from such spirit and scope, it is considered that all subject matter This descriptive report should be construed as illustrative only and not with a sense of limitation.
    权利要求:
    Claims (13)
    [1]
    1. Drive roller (30) for a conveyor belt (32) arranged to carry harvesting material, comprising: a cylindrical metal roller body (301) having an outer metal cylindrical surface (302) surrounding a rotational axis of the roller to engage with a drive surface (304) of a conveyor belt (32) wrapped thereon; CHARACTERIZED by the fact that a plurality of wear-resistant hard elements on the outer metal surface (302) of the roller body (301) to be raised to a height from the metal surface; the raised elements being arranged in a pattern on the metal surface to leave areas of the metal surface between the raised elements that are free of the raised elements; elements having a height from the metal surface (302) that is less than 6 mm; wherein the raised elements comprise a material which is, relative to the cylindrical outer metal surface (302), a wear-resistant hard material; and wherein the material comprising the raised elements is placed as an additional material on the cylindrical outer metal surface (302) of the roller (30).
    [2]
    Roller according to claim 1, characterized in that the rib-forming elements (305) extend along the roller.
    [3]
    Roller according to claim 2, characterized in that the ribs (305) are located at angularly spaced positions around the roller (30).
    [4]
    Roller according to claim 3, characterized in that the ribs (305) are arranged only at ends of the outer metal cylindrical surface of the roller such that each end (306, 307) of the roller (30) includes a respective rib section (305) extending from the end of the roller to a spaced position of the element section at the other end.
    [5]
    Roller according to any preceding claim 1 to 4, characterized in that the elements have a height in the range of 1 to 3 mm.
    [6]
    Roller according to any preceding claim 1 to 5, characterized in that the elements have a width of less than 6 mm.
    [7]
    Roller according to any preceding claim 1 to 6, characterized in that the elements have a width in the range of 1 to 3 mm.
    [8]
    Roller according to any preceding claim 1 to 7, characterized in that the elements have an angular spacing greater than 10 degrees.
    [9]
    Roller according to any preceding claim 1 to 8, characterized in that the elements have an angular spacing in the range of 10 to 45 degrees.
    [10]
    Roller according to any preceding claim 1 to 9, characterized in that the outer metal surface (302) of the roller (30) is formed of steel.
    [11]
    Roller according to any preceding claim 1 to 10, characterized in that the elements are formed of a wear-resistant hard material and a binder in which the hard material content is greater than 30%.
    [12]
    Roller according to any preceding claim 1 to 11, characterized in that the wear-resistant hard material is carbide.
    [13]
    Roller according to claim 12, characterized in that the elements are placed on the outer surface by laser coating.
    类似技术:
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    同族专利:
    公开号 | 公开日
    US8484938B2|2013-07-16|
    US20130240331A1|2013-09-19|
    CA2734475C|2012-10-09|
    EP2499896B1|2014-06-04|
    CA2734475A1|2012-05-10|
    AU2012201385B2|2014-07-17|
    US8662131B2|2014-03-04|
    AU2012201385A1|2012-10-04|
    AR085434A1|2013-10-02|
    BR102012013988A2|2015-08-18|
    EA022543B1|2016-01-29|
    US20130239535A1|2013-09-19|
    US20120233974A1|2012-09-20|
    EA201200317A2|2012-09-28|
    EA201200317A3|2013-01-30|
    EP2499896A1|2012-09-19|
    US8662132B2|2014-03-04|
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    法律状态:
    2015-08-18| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-07-17| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2018-12-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2019-01-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 16/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    CA2734475A|CA2734475C|2011-03-16|2011-03-16|Drive roller for the draper canvas of a crop header|
    CA2734475|2011-03-16|
    US13/049.526|2011-03-16|
    US13/049,526|US8484938B2|2011-03-16|2011-03-16|Drive roller with ribs for the draper canvas of a crop header|
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