• 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 invention relates to a feed roller for a harvester assembly, which feed roller comprises a fastening center (1; 11) and a surrounding roller part (2; 12) which has a circular cross-section and which comprises on its outer surface holding means (3; 14) for effecting the adhesion between the outer surface of the exchange part (2; 12) and the tree trunk which touches it. In the feed roller according to the invention at least one edge of the roller part (2; 12) is provided with a tooth (4; 15) for mechanically connecting two adjacent feed rollers. Fig. 2
    公开号:SE534030C2
    申请号:SE0901083
    申请日:2009-08-14
    公开日:2011-04-05
    发明作者:Timo Neuvonen
    申请人:Waratah Om Oy；
    IPC主号:
    专利说明:

    534 030 extends to the side of the outside of the feed roller, which feed roller abuts the surface of the tree trunk. Such feed rollers can be mounted next to each other on the harvester assembly so that their teeth engage each other. In this case, the feed rollers can rotate only simultaneously and at the same rotational speed and in the same direction, whereby with the above-described connection of hydraulic fluid circuits between hydraulic motors which rotate these feed rollers and also other feed rollers belonging to the harvester unit, said function of the feed rollers is achieved. which is prevented i.a. partial slip of the feed rollers.
    The disadvantage of the now known, mechanically interconnected feed rollers is that one has to manufacture a cog separate from the other parts of the feed roller to mechanically connect the feed rollers. This means that the manufacture of the known, mechanically interconnected feed rollers is more complicated and more expensive than the manufacture of the conventional feed rollers which are not mechanically connected.
    In addition, the known, mechanically interconnected feed rollers are heavy due to the separate cogging. In the known, mechanically interconnected feed rollers, the cogging is usually placed between the roller part and the fastening center. From the point of view of forces directed towards the teeth of the tooth, these teeth here are in an unfavorable manner closer to the axis of rotation of the feed roller than the outside of the roller part.
    In addition, in such a feed roller, an empty space is formed between the adjacent feed rollers, in which twigs and other parts detached from the tree trunk can staple and get stuck during use of the harvester assembly.
    The object of the invention is to eliminate problems associated with the now known feed rollers and to present a new construction for a feed roller which is mechanically connected.
    In particular, the purpose of the invention is to present a feed roller which is mechanically connected and whose manufacture is simpler and cheaper than before and in whose use an empty space is formed between the adjacent feed rollers, in which twigs and other parts detached from the tree trunk can get stuck. Furthermore, the object of the invention is to present a feed roller, in the use of which forces which are directed at teeth used in the mechanical coupling between the feed rollers and caused by the force transmission between the feed rollers are less than in the known solutions. Furthermore, the purpose of the invention is to present a method for manufacturing the invention roll according to the invention.
    The object of the invention is achieved with a feed roller which is characterized by what is presented in claim 1, and with a method which is characterized by what is presented in claim 4. In the inventive feed roller, at least the edge of a roller part is provided with a tooth for coupling the two adjacent feed rollers mechanically together. This toothing is substantially at the same height as the outside of the roller part, the distance between the outside of the toothing and the axis of rotation of the feed roller being substantially the same as the distance between the outside of the roller part and the axis of rotation of the feed roller.
    The advantage of the feed roller according to the invention is that it is not necessary to manufacture the separate gear-like gearing between the fastening center and the roller part. Thanks to this, the construction of the feed roller becomes simpler, easier and cheaper to manufacture than in the known solutions.
    Furthermore, the advantage of the inventive feed roller is that no empty spaces are formed between the mechanically interconnected feed rollers, whereby, compared with the solutions now known, it is more unlikely that twigs and other parts detaching from the tree get stuck between the feed rollers.
    Furthermore, since the tooth is formed on the edge of the roller part, mainly at the height of the outside of the roller part, it is as far away as possible from the axis of rotation of the feed roller. In this case, the distance between the outside of the roller part and the gearing, ie. the difference corresponding to the length difference between the torque arm of the gear and the outside of the roller part, as small as possible. Due to this, the tangential forces directed at the teeth of the tooth are approximately equal to the tangential forces that the tree trunk causes on the roller part, ie. the forces directed towards the teeth of the gearing become smaller than in the known feed rollers, in which the length difference between said torque arms is noticeably larger due to the gearing which is placed between the fastening center and the roller part. Thanks to this, the teeth of the feed roller can be dimensioned, if necessary, to be lighter in the construction than before and the friction between them and with this associated wear becomes less. This reduces the manufacturing and use costs of the inventive feed roller even more compared to the known feed rollers.
    In an application of the inventive feed roller, the tooth is formed on the edge of a surface piece which belongs to the roller part and has a round cross-section. From the point of view of manufacture, such a denture is very advantageous, since the dentition can be formed on the edge of the surface piece in a very simple and advantageous manner e.g. by forming the surface piece with a tube having a round cross-section and on the edge of which the cogging is processed, or with a sheet metal piece, the edge of which is processed e.g. by cutting or machining in the shape of the tooth before the surface plate is bent or formed in the circular shape. In such a feed roller, additional holding means, which are located on the surface of the roller part, can also be placed on the outside of the teeth, whereby there are holding means in a wider area than in the known feed rollers. In another application of the inventive feed roller, the tooth is formed with a separate tooth ring attached to the edge of the roller member. The advantage of such an application is that the construction of the roller part does not limit the construction of the gear ring particularly much, or vice versa. Furthermore, the separate toothed ring can be attached to the edge of the roller part in a fixed or removable manner. The advantage of the detachable construction is that then the toothed ring and the feed roller can be exchanged independently of each other, ie. if one of these parts is damaged, it is not necessary to replace both parts.
    In the following, the invention will be described in more detail with reference to the accompanying drawings, where Fig. 1 shows from the front a feed roll pair formed by the inventive feed rollers Fig. 2 shows obliquely from the side an individual feed roll pair according to Fig. 1, and 10 15 20 25 30 35 534 030 Fig. 3 shows obliquely from the front another pair of feed rollers suitable for heating.
    The application of the inventive feed roller presented in Figures 1 and 2 is made of separate parts. It comprises a fastening center 1 and a roller part 2 fastened around it, on the outside of which holding means 3 have been formed.
    Furthermore, the feed roller application according to Figures 1 and 2 comprises a tooth 4 on the edge of the roller part 2 for mechanically coupling the feed roller to the adjacent feed roller. As can be seen in Figure 1, the feed roller pair, which has been formed by two feed rollers which are mechanically connected, is mounted on the harvester assembly, usually so that axes of rotation of the adjacent feed rollers together form an obtuse angle. The magnitude of this angle is affected by the curvature of the outside of the tree trunks to be treated and by the fact that it is desired that the point of contact between the feed rollers and the tree be formed. Of course, this angle must also be formed so that teeth of the adjacent feed rollers are engaged with each other in a functional manner.
    The fastening center 1 of the feed roller presented in Figures 1 and 2 is in this case formed by two cylindrical middle pieces 5, on the outside of which two spaced apart pieces 6 are fixed. In the middle of the center piece of the fastening center, a fastening hole 7 has been formed for fastening the feed roller to the shaft of the motor which rotates the feed roller. The attachment and locking of the shaft in the attachment hole 7 can take place e.g. by means of a fitting, a groove shaft, a shaft journal or the like or in another manner known per se. In this case, the roller part 2 is formed by a surface piece 8 formed of finished pipe blank, on the edge of which the cog 4 is machined e.g. using laser. The teeth 9 of the teeth 4 formed in this way are parallel to the axis of rotation of the feed roller and thus form a circle with the same diameter as the roller part, i.e. their distance to the axis of rotation of the feed roller is the same as the distance of the roller member to the axis of rotation. Furthermore, the teeth 9 of the teeth 4 are formed in a manner known per se so that the feed rollers can be mounted next to each other in the manner presented in Figure 1 so that the teeth 9 of the teeth 4 engage with each other as the teeth of the gear. Holding means 3, which roll part 2 comprises, are in this case formed by machining / forming pointed peaks 10 at regular intervals on the surface of the pipe blank forming the surface piece 8. In this application the holding means 3 thus extend in the transverse direction of the roller part also to the gearing 4, i.e. it has been possible to place the holding means on a wider area than in the known feed rollers which are mechanically connected. In such an application, the adhesion between the feed rollers and the tree trunk is further preserved, even if the point of contact between the tree trunk and the outside of the roller part 2 ends up only at the toothing 4.
    The roller part 2 of the feed roller according to Figures 1 and 2 and the cylindrical intermediate piece of the fastening center 1 and the end pieces 6 are connected to each other by welding. In this case the end pieces 6 are formed of sheet-like sheet metal pieces, the outer diameter of which corresponds to the inner diameter of the roller part 2 and in whose center a round opening has been formed whose size corresponds to the outer diameter of the intermediate piece, so that they are around the intermediate piece 5 between the roller part 2 inside and the outer piece 5. The distance between the end pieces 6 is approximately half of the width of the roller part 2 and the flange pieces 6 are placed symmetrically relative to the center of the roll part 2. This makes it possible for loads caused by the tree trunk on the roller part 2 to be distributed as evenly as possible on both end pieces 6 and on the surface piece 8 of the roller part 4.
    The feed rollers presented in Figure 2 can be connected e.g. in the manner presented in Figure 1 so that axes of rotation of the adjacent feed rollers are in an oblique position relative to the direction of the tree trunk, ie. the axes of rotation together form an obtuse angle in the manner previously presented. In this case, the gripping area of their teeth is approximately at the point of contact of the tree trunk and the feed rollers. So, due to the engagement of the teeth 4, the feed rollers can rotate only simultaneously and in the same direction (since relative to the axis of rotation, the engagement area is on the same edge of both feed rollers). The teeth 4 of the feed rollers 4 according to fi gures 1 and 2 allow the use of different position angles. In principle, the feed rollers can be mounted parallel to each other or at an almost straight angle to each other. In practice, however, it is not necessary to use very large angles. On the other hand, they can be mounted parallel or almost parallel to each other, if it is desired that the point of contact between the feed rollers and the tree trunk is e.g. as close to the center line of the tree trunk as possible.
    Since there are also holding means for the teeth, with the feed roller construction according to Figures 1 and 2 a good adhesion is obtained even when using very small position angles.
    In the second application of the inventive feed roller presented in Figure 3, the attachment center 11 is similar to the application according to Figures 1 and 2, but the roller part 12 is realized in a manner not corresponding to the application according to Figures 1 and 2. In the application according to Figure 3, the roller part 12 formed by a surface piece 13 with straight edges, on the other surface of which uts your projection-like holding members 14 with pointedly shaped ends are attached. In this case, the tooth belonging to the second edge of the roller part is made of a separate tooth ring 16, on which a tooth 15 similar to the tooth in the previous application has been machined and which is welded to the edge of the roller part 12. Alternatively, the roller part 12 of the feed roller can be realized according to fi gur 3 e.g. so as to work threads on the lower surface of the second edge of the surface piece 13 and on the joint part formed on the second edge of the toothed ring 13 and whose diameter corresponds to the inner diameter of the surface piece 13, by means of which threads the toothed ring can be attached to the edge of the surface piece edge) in a removable manner. The advantage of such a construction is that you can replace the toothed ring 16 if it becomes worn or damaged so that you do not have to replace the other parts of the feed rollers.
    Furthermore, the inventive feed roller for the harvester head can also be realized in a way that does not occur in the previously presented example applications. The inventive feed roller can e.g. is made of a casting, on the center of which a fortress hole is machined and on the edge of the roller part a tooth of the type described above.
    The advantage of such an application is that it does not comprise separate parts to be connected to each other and joints between them. Many materials can be used as materials, the jointing ability of which is inferior to that of metallic materials. The roller part of the feed roll which is manufactured from separate parts can further be manufactured e.g. so that it is formed by a sheet metal piece of suitable thickness, on the other edge of which a tooth is machined before the cross section of the sheet metal piece is designed to be circular. 534 030 8 The invention is not limited only to the applications presented above, but it can be modified within the scope of the appended claims.
    权利要求:
    Claims (9)
    [1] 1. A feed roll for a harvester head, comprising: - a fastening hub (1; 11), - a roll part (2; 12) having a primarily circular cross section andsurrounding the fastening hub, - holding elements (3; 14) on the outer surface of the roll part toprovide the necessary hold between the outer surface of the roll part(2; 12) and the tree trunk touching the same, - a cogging (4; 15) formed on at the least one rim of the roll part(2; 12) to couple two adjacent feed rolls mechanically to each other, characterized in that further: - the cogging (4; 15) is primarily at the level of the outer surfaceof the roll part (2; 12), wherein the distance of the outer surface of thecogging from the rotation axis of the feed roll is primarily equal to thedistance of the outer surface of the roll part from the rotation axis of thefeed roll.
    [2] 2. The feed roll according to claim 1, characterized in that holdingelements (3) are also provided on the outer surface of the cogging (4).
    [3] 3. The feed roll according to claim 1 or 2, characterized in that thecogging (15) is formed of a separate gear ring (16) fixed to the rim ofthe roll part (12) either permanently or in a detachable manner.
    [4] 4. A method for manufacturing a feed roll for a harvester head, com-prising: - providing the feed roll with a fastening hub (1; 11), - providing the feed roll with a roll part (2; 12) having a primarilycircular cross section and surrounding the fastening hub, - providing the outer surface of the roll part with holding ele-ments (3; 14) to produce friction between the outer surface of the rollpart and the tree trunk touching the same, - providing a cogging (4; 15) on at the least one rim of the rollpart (2; 12) to couple two adjacent feed rolls mechanically to eachother characterized in that the method also comprises: - providing the cogging (4; 15) primarily at the level of the outersurface of the roll part (2; 12), wherein the distance of the outer surfaceof the cogging from the rotation axis of the feed roll is primarily equal tothe distance of the outer surface of the roll part from the rotation axis ofthe feed roll.
    [5] 5. The method according to claim 4, characterized in manufacturingthe roll part (2; 12) primarily of a circular surface piece (8; 13) whoserim is provided with a cogging (4; 15).
    [6] 6. The method according to claim 5, characterized in that the surfacepiece (8; 13) is formed of a semi-finished tube with a primarily circularcross section.
    [7] 7. The method according to any of the claims 4 to 6, characterized inthat a separate gear ring (16) is attached onto the rim of the roll part(12).
    [8] 8. The method according to claim 7, characterized in that the gear ring(16) is attached to the rim of the roll part (12) in a detachable manner.
    [9] 9. The method according to claim 4, characterized in that the feed rollis made of a single moulded piece, a cogging (4; 15) being machinedon the rim of the roll part (2; 12).
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    同族专利:
    公开号 | 公开日
    SE0901083L|2010-02-26|
    AU2009208111B2|2014-01-16|
    FI121053B|2010-06-30|
    FI20085792A0|2008-08-25|
    FI20085792A|2010-02-26|
    AU2009208111A1|2010-03-11|
    SE0901083A|2010-02-26|
    NZ579004A|2010-12-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FI20165079A|2016-02-04|2017-08-05|Waratah Om Oy|Feed wheels and harvester units|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI20085792A|FI121053B|2008-08-25|2008-08-25|Feed roller for a harvester head and method for manufacturing a feed roller|
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