• 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:BE1020777A3
    申请号:E201000332
    申请日:2010-06-02
    公开日:2014-05-06
    发明作者:Volker Fuchs
    申请人:Deere & Co；
    IPC主号:
    专利说明:

    description
    Straw shaker arrangement for a combine harvester
    The invention relates to a straw shaker assembly for a combine harvester, comprising a straw shaker, a crankshaft with which the straw shaker can be set in motion, and a drive with which the crankshaft can be set in rotation about its axis.
    PRIOR ART 1 r combines are used for harvesting grain crops. The Emtegut is by means of a Emtevorsatzes, z. B. a Schrieidwerks or corn picker, taken from the field and threshed in a threshing. The threshed Emtegut is then fed to a separator in which after the threshing still remaining grain in the Emtegut is dissolved out. The incoming from the threshing and separating Kom is then separated in a cleaning device of chaff and Kurzstrohanteilen. As a separator usually either in a swinging motion offset straw walkers or in a housing equipped with permeable grids rotors are used, which are combined in Axialmähdremem with the threshing in a single component. The straw walkers are usually driven by two spaced crankshafts and move on a circular path whose radius is determined by the Kurbelwellekröpfurig. The cleaning device usually comprises permeable upper and lower screens, which are set in a swinging motion and acted upon from below by a fan with an air flow.
    On the reciprocating straw walkers and cleaning equipment, the Emtegut moves gradually counter to the direction of travel to the rear. At the rear end of the straw shakers, the straw is placed in a swath in the field or fed to a straw chopper and distributed over the working width of the Emtevorsatzes. It is therefore desirable to achieve on the vibrating straw walkers as complete as possible separation between Kom and Emtegutresten, since at the end of the straw shaker Kom given as a loss goes to the Emteprozess and leads to unwanted seed emergence on the field
    The acceleration of the Emteguts on the straw shaker and its conveying speed over the straw shaker (and thus its residence time on it) depend on the speed of the
    Crankshaft off. If the speed is increased, the separation increases while increasing the conveying speed. An increased conveying speed reduces the residence time on the straw walkers and thus also the separation performance. Therefore, when designing the combine for most of the mechanical sizes of the straw walker (e.g., vibration frequency and stroke), it is common practice to set a fixed value that will produce reasonable results for most crop conditions.
    To adapt the straw shaker to different harvesting conditions, a change in the oscillation frequency has been proposed (DE 10 2005 050 751 A1), which can be based on recording the speed of the crop on the straw shaker. As a result, it is achieved that the passage or residence time of the crop on the straw walkers corresponds to a suitable setpoint in a large number of conditions.
    It has also been proposed to move the straw shaker on a non-circular path. According to DE 953 479 B a crank rod is hinged to the front end of the straw walker, the other end is eccentrically mounted on a drive shaft A support arm is mounted on the connecting rod between its front end and the drive shaft and further supported on the frame of the combine. This achieves that the front end of the straw walker moves on an approximately elliptical path whose horizontal amplitude is greater than the vertical amplitude. As a result, a large forward feed movement of the straw is achieved, but a relatively small vertical movement, which is to prevent parts of the straw are raised too high up and carried by the existing air flow too fast with backwards.
    EP 1 584 225 A1 describes another combine harvester whose straw shaker is moved by a crankshaft which is rotated by means of a first drive. The actual crankshaft is movable relative to the frame of the combine harvester and is moved at a variable speed relative to the frame of the combine by means of a second drive, which is also designed as a crank drive.
    EP 1 817 951 A1 describes another combine harvester whose straw shaker is fastened to the frame of the combine harvester via at least three variable-length actuators. As a result, different trajectories of the straw walker can be achieved, which depend, in particular, on the slope of the side slope or crop parame- ters.
    Object of the invention
    The object underlying the invention is seen to improve a combine harvester with a straw shaker so that an improved separation of the Kom on the straw walker is made possible without much effort.
    solution
    This object is achieved by the teaching of claim 1, wherein in the other claims features are listed, which further develop the solution in an advantageous manner.
    A straw walker arrangement comprises a straw walker, a crankshaft and a drive. During operation, the drive sets the crankshaft about its axis in a rotational movement, which does not, however, as is usual in the prior art, with a constant rotational speed, but increased and decreased during a revolution of the crankshaft about its axis. The rotational speed of the crankshaft thus changes gradually during operation. The crankshaft drives the straw walker, which moves on a circular path, but is continuously accelerated and decelerated due to the successively changing rotational speed of the crankshaft, and more so than the usual in the prior art, only due to the orbit acceleration. In this way, the separation performance of the straw shaker without deterioration of straw quality and the same space of the straw walker is improved because the Emtegutauf the straw shaker accelerated more than previously in the vertical direction and thrown up, resulting in an improved loosening of Emtegutmatte and the separation of Kom from the straw, while the residence time of Emteguts on the straw shaker due to the Drehfirequenz the crankshaft, which may correspond to the prior art, not necessarily changes.
    The straw walker usually includes several hordes, which are driven out of phase by different, angularly offset portions of the crankshaft. In order to achieve that each of the hurdles is accelerated at least once in a vertical direction during a rotation of the crankshaft in order to raise the crop upwards and remove grain therefrom, it is advisable to successively repeat the rotational speed of the crankshaft during one revolution around the axis to reduce and enlarge.
    To realize the temporally varying rotational speed of the crankshaft providing drive exist within the scope of the inventive idea different possibilities. Thus, it would be conceivable to use a power-operated motor, for example a hydraulic or electric motor, for driving the crankshaft and to control such that one obtains successively changing rotational speed.
    Mechanical solutions are also possible which generate the desired time-varying rotational speed of the crankshaft from a rotational movement with a constant rotational speed, which is provided in particular by an internal combustion engine. For this purpose, so-called non-circular gear can be used, for example, comprise non-circular gears or pulleys, which mesh directly with each other or by a traction means (for example, chain or belt) are interconnected. Another mechanical solution comprises a planetary gear with a component which is displaceable in a movement with time varying speed, for example via a crank mechanism.
    In the context of the inventive concept, the period of the speed variation, d. H. The difference between the angles of rotation of the crankshaft, where it reaches the maximum or minimum rotational speed, arbitrary. It would be conceivable to choose this period to be 360 ° divided by the number of hordes of the straw shaker. In another embodiment, it is chosen such that 360 ° divided by the period is not an integer, and corresponds, for example, to a value lying between the periods corresponding to 360 ° divided by two possible numbers of hordes of the straw shaker on the combine harvester usually used. Such a value would be 66 °. At this period, the hurdles of the straw walker go through every 66 degrees of minimum or maximum rotation speed. Thus, this transmission could be used on combines with 5 hordes (72 degrees crank offset between the hordes of the straw walker) and combines with 6 hordes (60 degrees crank offset between the hordes of the straw shaker). Because 360 ° can not be divided by 66 °, it is ensured that the throwing points and throwing speeds of the individual hordes of the straw shaker constantly change. Looking at the straw shaker at any one time, for example, a horde of straw shaker throws the material almost exclusively vertically upward, while a neighboring horde of straw shaker promotes the material maximum backwards. By this effect, a better loosening of the straw mat is achieved. This additionally improves the separation efficiency.
    Ausfühmnqsbeispiele
    In the drawings, two Ausfueührungsbeispiele invention described in more detail below are shown. It shows
    1 is a schematic side view of a combine with a straw shaker,
    2 shows a schematic plan view of a first embodiment of a drive of the crankshaft of the straw shaker of the combine harvester of FIG. 1,
    3 is a side view of the drive of Figure 2,
    4 is a diagram showing the acceleration acting on the straw shaker,
    Fig. 5 is a schematic plan view of a second embodiment of a drive of the crankshaft for the combine harvester of Figure 1, and
    6 is a side view of the non-round gear of the drive along the line 6-6 of Figure 5.
    1 shows a self-propelled combine harvester 10 with a frame 12 which is supported on the ground via driven front wheels 14 and steerable rear wheels 16 and is moved away from them. The wheels 14 are rotated by means not shown drive means in rotation to the combine 10 z. B. to move over a abzuemtendes field. In the following, directional details, such as from the rear and the rear, relate to the direction of travel V of the combine harvester 10 in picking mode.
    At the front end portion of the combine harvester 10, a harvesting device (not shown) is mounted for harvesting crops in the form of grain or other threshable culottes from the field during harvesting and feeding it up and back through a feeder 20 to a tangential threshing unit 22 a cooperating with a concave 28 threshing cylinder 24 and a beater 26 includes. Downstream of the turning drum 26 there is a straw shaker 28, which is composed of several (eg 5 or 6) individual, laterally juxtaposed hurdles, each of which displaces phase-shifted portions of a crankshaft 30 and drive rods 52 coupled thereto into a swinging motion become. In its rear region, the straw shaker 28 is suspended from rockers 54, which however could also be driven by a second crankshaft 30 arranged below the straw shaker 28, analogously to the driving rods 52.
    Below the Tangentialdreschwerks 22 is a front conveyor floor 32 which performs an alternately directed by the back and forth swinging motion during operation. A rear conveyor floor (not shown) is disposed below the straw walker 28 and performs in operation also alternately backwards and from the directed swinging motion. The front conveyor floor 32 transports through the concave 28 down passing through mixture of grain, short straw and chaff to the rear, while the rear conveyor floor transported through the straw shaker 28 through mixture of Kom, short straw and chaff to transported from. The mixture then passes into a cleaning device 34, which separates it by means of movable in oscillatory movements, from a fan 36 originating air traversed sieves 38 in cereals and Emtegutreste.
    Grain cleaned by the cleaning device 34 is supplied to an elevator, not shown, by means of a gripper screw 40, which conveys it into a grain tank 42. A cross auger 44 returns unmanaged ear parts through another elevator, not shown, back into the threshing process. The chaff may be ejected at the rear of the screen by a rotating chaff spreader, or it may be discharged through a straw chopper (not shown) disposed downstream of the straw walker 28. The . Cleaned grain from the comm tank 42 may be unloaded by an unloading system with cross augers and a discharge conveyor 46.
    The systems mentioned are driven by means of an internal combustion engine 48 and controlled and controlled by an operator from a driver's cab 50. The various devices for threshing, conveying, cleaning and separating are located within the frame 12. Outside the frame 12 is an outer shell, which is largely hinged.
    2 shows a schematic plan view of the drive 56 of Kurbelwetle 28. The drive 56 is driven by a connected to the internal combustion engine 48 Getriebeè (not shown) via a drive belt and a first pulley 58 which drives an input shaft 60. The input shaft 60 is above a second pulley 62 and a
    Drive belt 66 with a third pulley 64 in drive connection, which drives a crank 68. In addition, the input shaft 60 drives a first sun gear 70 of a first planetary gear 72 that meshes with a plurality of first planetary gears 74 that are secured to associated first planetary gear carriers 76. Of the first planetary gears 74 and the first Planetenradträgem 76 only one or one are drawn, but generally distributed around the circumference of the first sun gear 70 three. The first planet carrier 76 are each mounted in a housing 78 and also connected to the housing 78 rotatably supported Planetenradträgem second planetary gears 84 of a second planetary gear 82 whose second sun gear 86 drives an output shaft 88, which in turn drives the frame 12 supported on the squash shaft 28. The crank 68 is connected via a drive rod 90 to the housing 78 in drive connection.
    The drive 56 generates a superposition of a rotational movement at a constant speed with the 68 caused by the crank reciprocation of the housing 78, so that the crankshaft 30 is not driven at a constant rotational speed, but with a successively increasing and decreasing speed. This results in a continuously changing speed of the straw walker 28 in the vertical direction, the time derivative, d. H. the acceleration, in the figure 4 is shown. The sine curve 92 corresponds to a conventional crankshaft drive with a constant rotational speed. The distorted curve 94 caused by the drive 56 includes peaks of greater accelerations that result in upward ejection of the crop and improved crop detachment.
    , A second embodiment of a drive 56 is shown in Figures 5 and 6. There, the pulley 58 drives via the input shaft 60 to a so-called non-circular gear 96, which consists of two meshing, eccentric gears 100,102, in their place elliptical gears can be used. The non-circular gear 96 drives via an output shaft 104 and another gear 98 to adjust the speed and direction of rotation of the output shaft 98, which in turn drives the crankshaft 30. Here, too, a rotational speed of the crankshaft 30 varying over time is achieved, which analogously to the first embodiment contains a plurality of phase-offset acceleration peaks in the vertical direction over one revolution of the crankshaft 30 in order to raise the crop each on the individual trays.
    权利要求:
    Claims (12)
    [1]
    A straw walker arrangement for a combine harvester (10), comprising a straw shaker (28), a crankshaft (30) with which the straw shaker (28) can be set in motion, and a drive (56) with which the crankshaft (30) is rotatable about its axis, characterized in that the drive (56) is arranged to reduce and increase the rotational speed of the crankshaft (30) following each other.
    [2]
    2. Strohschüttleranordnung according to claim 1, characterized in that the s straw shaker (28) has a plurality of hordes, which are associated with different, angularly offset portions of the crankshaft (30), and that the drive (56) is arranged, the rotational speed of the crankshaft (30 ) during a revolution about the axis several times successively to reduce and enlarge.
    [3]
    3 · straw walker arrangement according to claim 1 or 2, characterized in that the drive (56) comprises a transmission (56) with an input shaft (60) which can be driven at a constant rotational speed, and that the transmission (56) with the crankshaft ( 30) has a drive-connected output shaft (88) which is connected by a non-circular gear (96) with the input shaft (60).
    [4]
    4. straw walker arrangement according to claim 1 or 2, characterized in that the drive (56) comprises a transmission with an input shaft (60) which is drivable at a constant rotational speed, and that the transmission (56) one with the crankshaft (30) drivingly connected A transmission shaft (88) which is connected by a planetary gear (72) to the input shaft (60), wherein a component of the planetary gear (72) is displaceable in a movement with a time-varying speed
    [5]
    5. straw walker arrangement according to claim 4, characterized in that the time-varying speed drivable.Beteilteil of the planetary gear (72) by a crank mechanism (68) is drivable
    [6]
    6. straw walker arrangement according to claim 4 or 5, characterized in that the time-varying speed drivable part of the planetary gear (72) whose planet carrier (76).
    [7]
    7. straw walker arrangement according to one of claims 4 to 6, characterized in that the drive (56) comprises two planetary gear (72,82) that the input shaft (60) with a sun gear (70) of the first planetary gear (72) is connected, in that the planet carrier (76) of the two planetary gears (72, 82) are interconnected and movable with time varying speed, and that the output shaft (88) is connected to the sun gear (86) of the second planetary gear (82).
    [8]
    8. straw walker arrangement according to one of the preceding claims, characterized in that the period of variation of the rotational speed of the crankshaft (30) corresponds to a value of 360 ° divided by the number of hordes of the straw shaker (28).
    [9]
    A straw walker arrangement according to any one of claims 1 to 7, characterized in that the period of variation of the rotational speed of the crankshaft (30) corresponds to a value such that 360e divided by the period is not an integer
    [10]
    A straw walker arrangement according to claim 7, characterized in that the period of variation of the rotational speed of the crankshaft (30) is between two periods each corresponding to a value of 360 "divided by two possible numbers of hordes of the straw walker (28).
    [11]
    11. straw walker arrangement according to one of claims 1 to 10, characterized in that the crankshaft (30) offset in an angular offset and the period of the variation of the rotational speed of the crankshaft (30) is dimensioned such that at any time a horde of the straw shaker ( 28) moves the Emtegut almost exclusively vertically upward, while an adjacent horde of straw shaker (28) promotes the Emtegut maximum backwards.
    [12]
    12. Combine harvester (10) with a straw walker arrangement according to one of claims 1 to 11.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE2000553C3|1979-03-22|
    DE2835899C2|1984-05-03|Harvester
    DE2433948A1|1975-02-06|HARVESTING AND THRESHING MACHINE
    EP2789222A1|2014-10-15|Drive system in the form of a belt drive for a self-propelled combine harvester
    DE102005050751A1|2007-08-09|Thresher has sensor detecting measuring variable containing data on through flow of material passing over straw shaker downstream of threshing unit to change frequency and/or amplitude of vibrating movement accordingly
    DE102015205622B4|2018-08-09|Inclined conveyor assembly for a combine harvester
    BE1020777A3|2014-05-06|STRAWBERRANT ASSEMBLY FOR A COMBINE SHAFT.
    BE1021204B1|2015-08-04|SIEVE ARRANGEMENT FOR A COMBINE SHAFT
    DE102013226436B4|2022-03-03|Feederhouse for a combine harvester
    EP2382857B1|2014-06-18|Thresher device for a combine harvester
    BE1022956B1|2016-10-21|Method and control device for operating a harvester
    DE2503693A1|1976-08-05|GRAIN SEPARATION DEVICE FOR A COMBINE
    DE2413975C2|1982-08-19|Grain cutter, e.g. for combine harvesters
    EP2036425B2|2014-10-29|Concave assembly for a combine harvester
    BE1021334B1|2015-10-30|COMBINE WITH A NACHDRESCHEINRICHTUNG ARRANGED BETWEEN THE DRESCHEINRICHTUNG AND CLEANING
    EP0862850A1|1998-09-09|Combine
    EP3666060A1|2020-06-17|Straw walker structure for a combine harvester
    EP3269227B1|2019-07-31|Sieve drive for a combine harvester
    DE102012106338A1|2014-01-16|Dreschtrommel and equipped with such a threshing drum mobile threshing
    DE19709400A1|1998-09-10|Harvester
    DE3719858C1|1988-07-28|Threshing and separating drum for a combine harvester working on the axial-flow principle
    DE102018219864B3|2020-02-13|Combine harvester with a auger assembly
    DE2231511A1|1973-01-18|ROTOR DRIVE DEVICE FOR COMBINE OF THE AXIAL FLOW DESIGN
    BE1022970B1|2016-10-25|Adjustment arrangement for adjusting the working gap of a basket of a threshing and / or separating device
    EP1310151A1|2003-05-14|Conveying device for the filling of a grain tank of a combine and conveyor for the return of tailings
    同族专利:
    公开号 | 公开日
    DE102009026870A1|2010-12-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1148099B|1962-05-03|1963-05-02|John Deere Lanz Ag|Schuettler drive for threshing machines and combine harvesters|
    EP1584225A1|2004-04-06|2005-10-12|CLAAS Selbstfahrende Erntemaschinen GmbH|Combine|
    EP1817951A1|2006-02-14|2007-08-15|CLAAS Selbstfahrende Erntemaschinen GmbH|Combine harvester with straw walker|
    DE953479C|1954-09-18|1956-11-29|Westerasmaskiner Ab|Device on the straw shaker of a threshing machine|
    DE102005050751A1|2005-10-22|2007-08-09|Deere & Company, Moline|Thresher has sensor detecting measuring variable containing data on through flow of material passing over straw shaker downstream of threshing unit to change frequency and/or amplitude of vibrating movement accordingly|BE1021870B1|2014-04-22|2016-01-22|Cnh Industrial Belgium Nv|DRIVE WITH A VARIABLE BATTLE FOR A CLEANING SYSTEM IN A HARVESTING MACHINE.|
    DE102016212637A1|2016-07-12|2018-01-18|Deere & Company|Sieve drive for a combine harvester|
    US10426094B2|2016-10-14|2019-10-01|Deere & Company|Harvester reciprocating drive balancing system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE200910026870|DE102009026870A1|2009-06-09|2009-06-09|Straw walker arrangement for combine utilized for harvesting grain fruit, has drive provided for increasing or decreasing rotating speed of crankshaft following one on other, where drive rotates crankshaft about axis|
    DE102009026870|2009-06-09|
    [返回顶部]