• 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:

    公开号:NL2005585A
    申请号:NL2005585
    申请日:2010-10-27
    公开日:2011-05-02
    发明作者:Ludwig Legl；Franz Hoeftberger
    申请人:Alois Poettinger Maschinenfabrik Gmbh；
    IPC主号:
    专利说明:

    Machine for hay extraction
    The invention relates to a machine for extracting hay, in particular in the form of a turning machine, with at least one circular rake which comprises rake teeth which rotate about an upright axis of rotation and which are mounted on tooth-carrying arms which extend to the outside of the stand out.
    Haymaking machines in the form of rotating turning machines that serve to turn hay resp. stem and leaf material, work regularly with rapidly rotating circular rakes, the rake teeth of which pick up the crop from the soil and throw it scattering. For this purpose, the circular rakes run in the usual manner about upright rotational axes which are tilted slightly forwards towards the direction of travel, so that the rake teeth in a front sector of the orbit run over the bottom and come backwards away from the bottom towards the discharge area.
    In order to process large surfaces at high driving speeds, but also to achieve a good result with regard to spreading and mixing the crop and to be able to strike lightly against the stalk structure in order to accelerate the drying process, it is desirable to use the circular rakes with high turnover speeds. of the rake teeth. It sometimes happens, however, that the swirling harvested goods get stuck in the rake's carrying arms, where under certain circumstances such as drought, length, leaf and stalk, protein and sugar content, despite the high turnover rates, it is not possible to get rid of it. sliding because the harvested material winds around the rake arm of the rake in a U-shape and lingers on the rake teeth arranged at the free end of the respective rake arm. This further adversely affects the further spreading process. Blockages may possibly arise which can often only be lifted again when the machine and the rotational drive of the circular hook are stopped, whereby the driver of the tractor often has to dismount.
    Hay extraction machines of the aforementioned type are known, for example, from EP 19 29 857 A2 or WO 2007/048970 A2.
    Starting from this, the present invention aims to provide an improved hay-making machine of the above-mentioned type, which avoids disadvantages of the prior art and further develops it advantageously. Preferably, improved circular rakes must be provided which, with a construction which is easy to manufacture and which guarantees sufficient rigidity and sturdiness, prevents crop material from becoming stuck or resp. gets tangled on the dental arms.
    According to the invention this object is achieved by a hay-making machine according to claim 1. Preferred embodiments of the invention are the subject of the subclaims.
    It is therefore proposed that the tooth carrier arms are no longer star-shaped, respectively. to radiate radially, but to bend backwards relative to their orbit so that harvested crop thereby slides sideways / outwards. By bending the tine carrier arms in an approximately tangential direction, the crop grasping the tine carrier arms slides outwards, just like on an inclined surface. According to the invention, the tine carrier arms, viewed in the direction of the axis of rotation, are arranged obliquely backwards with respect to a radial straight line on the axis of rotation against the direction of rotation of the circular rakes. As a result, it is possible to work at high turnover speeds, without harvesting goods getting stuck to the tine arms for a long time. On the contrary, a high turnover rate supports the release of the stuck bunches of crop from the tine arms, because high circulation rates exert high centrifugal forces on the crop. As a result, with a construction which is simple to carry out in terms of construction, the problem of catching crop material on the tine arms can be effectively combated.
    In a further development of the invention, the inclined position of the tooth carrier arms with respect to the radial direction - viewed in the direction of the axis of rotation - can be of different nature. For example, the tooth carrier arms may have a substantially straight course extending over the entire projecting length thereof and having an inclined position at a constant angle with respect to said radial line. At the inner end portions thereof, the tooth carrier arms may have a perpendicularly bent area, in which they may extend radially for easier attachment, said perpendicularly bent attachment portion being provided with a generally shaped dish-shaped carrier arm holder to which the tooth carrier arms are attached. In order to prevent the crop material from sticking to the tinear arms, the tine carrier arms are at least over the outer 80% of their projecting length sloping backwards in the aforementioned manner, wherein in an advantageous manner all of the dish-shaped bearing arm holders, respectively. the toothed arms protruding in circles have an inclined position.
    According to a particularly advantageous embodiment of the invention, the tooth carrier arms may have an inclined position with respect to the radial direction varying along their length, wherein in particular it is provided that the inclined position increases outwards relative to the radial direction , ie the outer free end portions of the tine arms, to which the rake teeth are attached, are more tangential, resp. with respect to the radial direction, it is bent more strongly than the parts of the tooth carrier arms that lie further inwards and which run towards the hub-shaped carrier arm holders. This varying inclination with respect to the radial direction can be realized by different courses of the tooth carrier arms, for example, a respective tooth carrier arm can have a bent course which, in the manner of a polygon, runs increasingly obliquely backwards. In a preferred further development of the invention, however, the tooth carrier arms, seen in the direction of the axis of rotation, have an arcuate curved course that curves more and more backwards towards the free ends of the tooth carrier arms. increasingly converges with a tangential line on the orbit.
    The angle of inclination with respect to the radial direction can herein vary from approximately 20 ° to approximately 90 °, wherein an oblique position of 90 ° with respect to the radial corresponds to a complete tangential part, such as this can, for example, be entirely at the end of the tooth carrier arm. are provided. According to an advantageous embodiment of the invention, the angle of inclination with respect to the radial can vary between 30 ° and 60 °, wherein in the above-mentioned manner the inclined position preferably increases towards the outer, free end of the tooth-carrying arms.
    In an advantageous further development of the invention, the tine carrier arms are designed not only with regard to the course of their longitudinal extension, but also with regard to the formation of their cross-section and the course thereof, such that the cross-section suppresses the jamming of hay, resp. supports the shedding of harvested goods that come into engagement with the tine arm.
    In this case, it is advantageous if the tooth carrier arms have round fronts, viewed in cross-section, which can preferably have an arc-shaped, oval or drop-shaped contour. As a result, the crop is less easily attached to the tine arms.
    In order to achieve a slender tooth carrier arm and a tooth carrier arm with sufficient resistance at the same time despite a round contour of the front edges, in an advantageous further development of the invention, the tooth carrier arms have a cross-section, the contour of which deviates from the circular shape, but also deviates from the rectangular shape to avoid the usual curves of flat irons, from which the hay easily sticks. In a further development of the invention, the tooth carrier arms have a flattened cross-section which has a longer main axis, which direction is parallel to the orbit of the tooth carrier arms and has a shorter main axis directed transversely thereto, ie a longer horizontal main axis and a shorter upright main axis. The cross-sectional shape may advantageously have, for example, an oval or drop-shaped contour or have a contour in the form of the bearing surface profile of an aircraft. Compared to the conventional tine arm holders dental brackets with a cross-section constructed in such a way, there is a lower tendency to support the harvesting of harvested goods, while compared to traditional dental arm holders consisting of tubes with a circular cross-section, a simpler manufacture is achieved. can be, which [on the one hand] requires no complicated bending of the tubes and on the other hand stuck crop is more easily broken down by the thinner cross-section, because it is divided into pieces.
    In an advantageous further development of the invention, the tooth carrier arms have a cross-section that changes in their longitudinal direction over their entire extent. In particular, in a further development of the invention, the cross-sectional area towards the protruding free end of the tine-bearing arms can be reduced in surface area. If the tooth carrier arms are provided with a flattened profile in the above-mentioned manner, they can become thinner and / or narrower towards the free end. This not only reduces the engagement surface of the carrying arms, from which the crop can remain stuck, but this also leads to an optimized utilization of the material. Towards the inner ends, the moment of inertia of the surface of the cross-sections of the tooth carrier arm increases and thus also their resistance to bending, which corresponds to an adaptation to the occurring torque curve. Moreover, the moved masses decrease where high circulation speeds occur, namely in the outer peripheral areas of the circular rake, whereby a greater walking rest and a lower vibration tendency can be achieved.
    The tooth carrier arms can in principle be manufactured from different materials. The tine arms can advantageously be designed as forgings and / or have a body of solid material.
    The invention is explained in more detail below with reference to a preferred exemplary embodiment and associated drawings. In the drawings: Fig. 1 shows a schematic side view of a hay extraction machine in the form of a turning machine according to an advantageous embodiment of the invention, Fig. 2 shows a schematic top view of the turning machine of Fig. 1, in which it is shown how a plurality of circular rakes arranged side by side, fig. 3 is a partial perspective view of a circular rake with bent rake-carrying arms from the preceding figures, and fig. 4 a top view of the circular rake from fig. 3.
    The hay extraction machine 1 shown in the figures is in the form of a turning machine which can be attached to a tractor 2 and is pulled over it by the tractor.
    As Fig. 2 shows, the turning machine comprises a drawbar-shaped extension rod 3, which can be hingedly attached to the attachment device 4 of the tractor 2 and is connected to a machine frame 5 in the form of a beam or a carrier extending transversely to the direction of travel, on which several circular rakes 6 are suspended side by side transversely of the direction of travel. In a manner known per se, the said machine frame 5 can be designed to be pivotable and collapsible in order to collapse and / or collapse for transport by road. be able to be pivoted.
    The circular rakes 6 are each supported against the ground by means of a feeler wheel chassis 7, compare fig. 3.
    The circular rakes 6 each comprise a large number of tooth carrier arms 8, which are attached with their inner ends to a central, plate-shaped, respectively. hub-shaped support arm holder 9. The said support arm holder 9 and thus the tooth support arms 8 can be rotated rotatably about an upright axis of rotation 10, wherein the drive movement can be derived from the tractor 2 via a draw-off shaft 2 and can be transferred via individual distributor drives and drive shafts to the individual circular rakes. 6.
    As Fig. 1 shows, the pivot shafts 10 are tilted slightly forward in the direction of travel, so that the rake teeth 11 attached to the free ends of the tine carrier arms 8 rotate above the bottom in the front sectors of the orbit of the circular rakes 6 and in the rear sectors from the bottom, compare fig. 1. As a result, crop located on the bottom is picked up by the rotating rake teeth 11, rake away from the path of the feeler wheel supports 11 and scattered backwards. Said rake teeth 11 can be formed in a manner known per se by spring teeth in the form of, for example, double teeth, which depend downwardly on the free ends of the tooth carrier arms 8.
    As shown in FIGS. 3 and 4, viewed in the direction of the axis of rotation 10, the tooth carrier arms 8 have an arcuate curved course, compare FIG. 4, wherein the arcuate curvature is such that the tooth carrier arms 8 are radially straight line 12 on the rotating shaft 10 are bent backwards against the direction of rotation of the tooth carrier arms 8. As Fig. 4 shows, the angle of inclination α which encloses the curved longitudinal axis of the tooth carrier arms 8 with respect to said radial straight line 12 increases with an increasing distance with respect to the respective axis of rotation 10, that is, towards the free ends the tooth carrier arms 8 have a greater inclination than towards the inner fixing portions.
    The said angle of inclination α, which can be seen parallel to the axis of rotation 10 in the direction of the drawing, is here in the region of the inner end portion, resp. relatively small in the transition area to the said dish-shaped support arm holder 9. Directly projecting from the support arm holder 9, the angle of inclination is approximately 1 ° to 10 °. In contrast, the angle of inclination with respect to said radial straight line 12 in the area of the free ends is relatively large, while the angle of inclination α directly at the free ends to which the rake teeth 11 are attached can be 90 °, as this becomes shown in Fig. 4. Advantageously, the said angle of inclination α does not increase linearly over the projecting length of the tine arm carrier 8, but it only increases relatively slightly in the inner half of the tine carrier arms 8, while the angle of inclination α then increases the outer 50% of the support arm holders 9 increases relatively strongly. In other words, the tooth carrier arms 8 are only slightly curved towards the inner end, while the curvature towards the free ends increases more and more, comparatively. 4.
    In the embodiment shown, the cross section of the tooth carrier arms 8 also varies along the length of said tooth carrier arms 8. In particular, the cross-sectional area of the tooth carrier arms 8 decreases towards their free ends, in particular the width of the tooth carrier arms 8 being shown decreases towards the free ends in FIG. Alternatively or additionally, however, the thickness of the tooth carrier arms 8 can also decrease towards the free ends, the said thickness being substantially in the upright direction, respectively. - because the tooth carrier arms 8 are not aligned exactly horizontally, but hang downwards with a slightly tilted forward axis - slightly tilted is measured with respect to the vertical line.
    The narrowing towards the free ends can here be of different strengths. In the embodiment shown in Fig. 4, the cross-sectional area in the region of the free ends of the tooth carrier arms 8 can be about 50% to 85%, preferably about 60 to 75% of the cross-sectional area of the tooth carrier arms 8 at the inner end portions thereof, with which the tooth carrier arms 8 project from the carrier arm holder 9.
    The cross-sectional shape of the tooth carrier arms 8 is advantageously neither circular, as is the case with tubes, nor rectangular, as would be the case with flat band irons, but pressed flat with a circular front portion, with the front portion having the Direction of rotation 13 of the rotary rake 6 is intended as a front-bearing arm side. For example, the tooth carrier arms 8 may have an oval, drop-shaped, ellipsoidal cross-section, or a cross-section in the form of the bearing surface profile of an aircraft.
    权利要求:
    Claims (9)
    [1]
    Haymaking machine, in particular in the form of a turning machine, with at least one circular rake (6), comprising rake teeth (10), which rotate about an upright axis of rotation (10) and which are mounted on tooth-carrying arms (8) , which project with respect to the outside of the circular rake, characterized in that the tine carrier arms (8), viewed in the direction of the axis of rotation (10), are directed relative to a radial straight line (12) on the axis of rotation (10) against the The direction of rotation of the circular rakes (6) are in sloping backwards.
    [2]
    Haymaking machine according to the preceding claim, wherein the tooth-carrying arms (8), viewed in the direction of the axis of rotation (10), have a straight course substantially over the entire projecting length thereof and are sloping at the same angle.
    [3]
    Haymaking machine according to claim 1, wherein the tooth-carrying arms (8), viewed in the direction of the axis of rotation (10), have an arcuate curved course and / or a bent course, in particular a course in the manner of a polygon, such that the angle of inclination α of the longitudinal axis of the tine carrier arms (8) increases with respect to the radial straight line (12) towards the outside of the circular rakes (8).
    [4]
    Haymaking machine according to the preceding claim, wherein the angle of inclination α with respect to the free ends of the tooth carrier arms (8) has no linearly rising increase, in particular an increase which becomes increasingly stronger towards the free ends.
    [5]
    Haymaking machine according to one of the preceding claims, wherein the angle of inclination α is between 10 ° and 90 °, preferably about 20 ° to 80 °, and over a part of more than 50% of the protruding length of the tine carrier arms (8) approximately 30 ° to 60 °.
    [6]
    A haymaking machine according to any one of the preceding claims, wherein the tooth carrier arms (8), apart from the inner end portions that are bent over the hinged connection with an approximately dish-shaped carrier arm holder (9), over at least 80% of their protruding length have an inclined position with respect to the radial straight line (12).
    [7]
    Haymaking machine according to one of the preceding claims, wherein the tooth carrier arms (8) have round front flanks, viewed in cross-section, which advance in the direction of rotation (13) and which preferably comprise an arcuate, oval or drop-shaped rounded front.
    [8]
    Haymaking machine according to one of the preceding claims, wherein the cross-sectional area of the tooth carrier arms (8) deviates from the rectangular shape and the circular shape and has a flattened contour, the longer main axis of which points in the direction of the orbit and the shorter ones main axis is perpendicular to the direction of rotation (13) and perpendicular to the longitudinal axis of the tine arm.
    [9]
    Haymaking machine according to one of the preceding claims, wherein the tooth carrier arms (8) have a cross-section which is reduced in area towards the protruding free end of the tooth carrier arms (8).
    类似技术:
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    CN104285595B|2018-06-19|Modified form stalk harvester
    NL8400028A|1985-08-01|MOWER.
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    NL8800409A|1988-10-03|DEVICE FOR MOVING CROPS.
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    US3454100A|1969-07-08|Windrowing fork arrangement for peanut digger
    US4062173A|1977-12-13|Hay-making machines
    NL8304356A|1985-07-16|SOIL TILLER.
    US422167A|1890-02-25|Gang hay-rake
    CN206314239U|2017-07-11|Harvester
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    NL8800844A|1989-11-01|AGRICULTURAL MACHINE WITH DENTAL LOSS PROTECTION.
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    EP2526750A1|2012-11-28|Haymaking machine
    US260301A|1882-06-27|Combined hay rake and tedder
    同族专利:
    公开号 | 公开日
    DE202009014546U1|2011-03-17|
    ITUD20100194A1|2011-04-29|
    NL2005585C2|2012-03-06|
    IT1403171B1|2013-10-04|
    FR2951610A1|2011-04-29|
    FR2951610B1|2014-12-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1883612U|1963-10-02|1963-11-28|Fahr Ag Maschf|ZINK BASKET FOR HAYMAKING MACHINERY.|
    DE1582160B1|1967-12-21|1971-08-26|Bautz Gmbh Josef|Raking tool for rotary tedder|
    DE2240574A1|1972-08-18|1974-02-28|Weidtmann Rainer Dipl Ing Dipl|HAYMAKING MACHINE|
    GB2015859B|1978-03-14|1982-09-15|Patent Concern Nv|Haymaking machines|
    FR2719742B1|1994-05-13|1996-08-02|Kuhn Sa|Haymaking machine, in particular a rotor tedder fitted with fork arms with deflectors.|
    DE19929110A1|1999-06-25|2000-12-28|Claas Saulgau Gmbh|Haymaking machine|
    FR2892597B1|2005-10-28|2009-07-03|Kuhn Sa Sa|FANNING MACHINE WITH MEANS FOR POSITIONING FANING ROTORS AROUND THEIR CENTER AXIS WHEN FOLDING THE MACHINE IN TRANSPORT POSITION|
    DE102005061510A1|2005-12-22|2007-07-05|Martin Ziegler Gmbh & Co. Kg|Rake for a haymaking machine|
    FR2908957B1|2006-11-27|2011-03-18|Kuhn Sa|FASHION MACHINE WITH PROTECTIVE MEANS|DE102012022582B8|2012-11-20|2014-05-22|Franz Greisbach|Method for producing a spring tine and spring tines|
    法律状态:
    2020-06-03| MM| Lapsed because of non-payment of the annual fee|Effective date: 20191101 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202009014546U|DE202009014546U1|2009-10-28|2009-10-28|Hay-making machine|
    DE202009014546|2009-10-28|
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