• 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:
    Sieve arrangement for a combine harvester The invention relates to a sieve arrangement (48) for a combine harvester (10) with at least one sieve (50, 52) equipped with openings and a drive (70) in drive connection with the sieve (50, 52), with which the sieve can be set in an oscillating motion. It is proposed that the drive (70) comprises a mass oscillator, in particular in the form of a mass (74) attached eccentrically to a rotationally driven shaft (72), which converts the rotary movement of the shaft (72) into an oscillating movement, and that the oscillation of the mass oscillator is adjustable in its position about the vertical axis and / or in its rotational speed.
    公开号:BE1021204B1
    申请号:E2010/0055
    申请日:2010-02-03
    公开日:2015-08-04
    发明作者:Thomas Weizel；Volker Fuchs
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    Siebanordnunq for a combine Description
    The invention relates to a sieve arrangement for a combine harvester with at least one sieve equipped with openings and a drive which is in driving connection with the sieve and with which the sieve can be set in a swinging motion.
    State of the art
    Agricultural combines are large machines that carry crop, harvest, thresh, separate and clean agriculturally grown crops that carry grain. The resulting clean grain is stored in a grain tank on the combine harvester. The threshing of the threshed grain is carried out by means of a sieve box, which usually contains two superposed sieves with permeable openings for grains and is acted upon by a fan with an air flow. The sieves are usually equipped with movable slats, which allow adjustment of the opening sizes of the sieves. Below the sieves conveyor trays are mounted, wherein a conveyor bottom below the lower sieve promotes the clean Kom to a cross auger, which passes it to a grain elevator, which eventually feeds it to the grain tank. A conveyor bottom below the rear portion of the top wire feeds grain mixed with grain to another cross auger which transfers it to a tailings conveyor which returns it to the threshing device or to a separate sweeper.
    The sieve box or sieves are usually vibrated with an eccentric drive that converts a rotary motion provided by an internal combustion engine into a horizontal and vertical oscillatory movement of the sieves extending in the forward direction of the combine so that each point of the sieve moves in a circular path emotional. Normally, the oscillation frequency is fixedly coupled to the speed of the internal combustion engine while the oscillation amplitude is fixed. Reference should be made to the state of the art according to DE 33 32 763 A1. However, the fixed oscillation amplitude and the likewise almost constant oscillation frequency do not prove to be optimal for all crop types and throughputs.
    It has also been proposed to control the oscillation frequency, the oscillation amplitude and / or the direction of oscillation of the sieves and the sieve opening and the sieve inclination depending on the throughput measured on the basis of the air pressure prevailing between the fan outlet and the plane of the sieve (DE 27 53 505 A1). The manner in which the mentioned adjustments are carried out is not disclosed.
    Another problem with the screens moving only in the forward and vertical directions is that when driving on side slopes, crops accumulate on the downhill side of the screens if the combine's frame is not equipped with adjustable wheels supporting the frame and with it also keep the screens horizontal on side slopes. As a result of the uneven loading of the screen, only an insufficient proportion of the grain is screened out on the slope, which leads to high losses and excessive load on the tailings. To solve this problem, it has been proposed to make the upper sieve movable relative to the frame and to orientate it horizontally (DE 33 32 763 A1). Later, it was proposed to additionally excite the screens in the lateral direction, wherein the drive for the lateral movement is mechanically derived from the drive used for the oscillating movement of the screens (DE 199 08 696 C1, EP 1 595 435 A1, EP 1 609 352 A1). , or is provided by means of its own linear drive (EP 1 712 122 A1).
    Object of the invention
    The object underlying the invention is seen to provide a comparison with the prior art improved screen assembly for a combine harvester, which allows an unproblematic adjustment of the Siebschwingung to different working conditions or side slopes. 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 sieve assembly comprises one or more sieves which are or are provided with apertures for passing the grain and which are or are usually impinged by a fan with an air flow. Preferably, the sieve or sieves are mounted in a sieve box. According to the invention, the sieve or the sieves are set in a swinging motion by means of a linearly movable or rotating mass oscillator. Such mass oscillators include a
    Mass that is translationally or rotationally set in motion and converts the movement due to their inertia in a swinging motion. With regard to a translatory mass oscillator, reference is made to the prior art according to DE 1 993 476 U1, the disclosure of which is incorporated by reference into the available documents.
    In a rotary mass oscillator, the drive comprises an eccentrically mounted on a shaft rotatably driven mass, which converts the rotational movement of the shaft due to their inertia in a swinging motion.
    The shaft - or, in the case of a translatory mass oscillator, a reciprocating piston - is rigidly coupled to the screen or sieves by being indirectly or indirectly connected to it by or through the screen box. The sieve or screens or sieve box are pendulum or spring suspended on the frame of the combine harvester so that they can follow the swinging motion.
    The rotational position of the mass oscillator about the vertical axis is adjustable in order to adjust the direction of the swinging motion on a side slope can. Alternatively or additionally, the oscillation frequency is adjustable in order to adapt it and the oscillation amplitude to different crop throughputs or crop properties.
    In this way one achieves without great effort an adjustability of the direction and / or frequency and amplitude of the vibration of the screen.
    Working Example
    With reference to the figures, an embodiment of the invention will be explained. It shows:
    1 is a partially sectioned side view of a combine with a sieve assembly,
    Figure 2 is an enlarged side view of the screen assembly and its drive, and Fig. 3 is a plan view of the lower screen and the drive.
    FIG. 1 shows an agricultural combine harvester 10 having a frame 12 with ground engaging wheels 14 attached to the frame 12 for propelling the combine 10 in a forward direction that is leftward in FIG. The operation of the combine harvester 10 is controlled from an operator's cab 16. A cutter 18 is used to harvest grain containing grain and feed it to a feeder 20.
    The harvested crop is fed by the feeder 20 to a beater 22. The guide drum 22 passes the crop through an inlet transition section 24 to an axial crop processor 26. Hereinafter, directional indications, such as from the rear and the rear, refer to the forward direction of the combine 10, which extends to the left in FIG.
    The crop processing device 26 comprises a rotor housing 34 and a rotor 36 arranged therein. The rotor 36 comprises a hollow drum 38 to which crop processing elements for a loading section 40, a threshing section 42 and a separating section 44 are fastened. The loading section 40 is located at the front of the axial harvesting processing unit 26. The threshing section 42 and the separating section 44 lie longitudinally downstream and rearwardly of the loading section 40. Threshed straw leaving the separating section 44 is ejected from the crop processing device 26 through an outlet 60 and fed to an ejection drum 62. The ejector drum 62 cooperating with an underlying floor ejects the straw to the rear so that it can be deposited directly on the field or chopped by a straw chopper (not shown) and distributed over the field. Instead of an axial crop processing unit 26, it is also possible to use a tangential threshing drum and its following straw shaker or an axial separating device following it.
    Grain and chaff falling through a concave associated with the threshing section 42 and a separating grate associated with the separating section 44 are fed to a cleaning system 28 having a fan 46 and a screen assembly 48 having screens 50,52 displaceable in a swinging motion and equipped with adjustable louvers. The cleaning system 28 removes the chaff and feeds the clean grain via a conveyor bottom 64 located below the lower screen 52 and a screw conveyor 54 to a clean grain elevator 56. The clean grain elevator 56 deposits the clean grain in a comm tank 30. The clean grain in the comm tank 30 may be unloaded by a discharge auger 32 onto a van, trailer or truck. Emmental material remaining at the rear end of the lower lamellar screen 50 is returned to the crop processing device 26 by means of a conveying floor 66 arranged there, a screw conveyor 58 and a return conveyor (not shown). The screens 50, 52 and the trays 64, 66 are mounted within a screen box 68. The embryo remnants discharged at the rear end of the upper fin screen 50, which consist essentially of cattle (chaff) and small straw particles, are distributed over the field by a gritter (not shown) or rearwardly into an inlet of a flotation tray conveyor (not shown) Straw chopper (not shown) promoted.
    In FIG. 2, the sieve box 68 with the sieve arrangement 48 with the sieves 50, 52 and its drive 70 is shown enlarged. The drive 70 is composed of a shaft 72 which can be set in rotation about a horizontal axis of rotation, and a mass 74 mounted eccentrically on the shaft 72 via a coupling rod 76. The shaft 72 is mounted on bearings 78 (see Figure 3), which is rigidly connected by struts 80 to the screen box 68 and a frame of the lower screen 52. The screen box 68 is freely pendulum suspended on the frame 12 via front and rear pendulum bearings 82 and is mounted in support bearing 84 freely slidably on the frame 12 so that it in all three directions (horizontally in the forward direction, in the lateral direction and in the vertical direction) within can move freely given limits. The pendulum bearings 82 and the support bearings 84 could also be replaced by springs. The shaft 72 is rotated by a flexible shaft (not shown) from the internal combustion engine of the combine harvester 10 or an electric or hydraulic motor 86, which is powered by flexible lines 88 with drive energy. The inertia of the mass 74 mounted eccentrically on the shaft 72 causes the screen assembly 48 is placed in a swinging movement, which is transverse to the longitudinal axis of the shaft 72. For example, if the shaft 72 is oriented horizontally and transversely to the forward direction, the oscillating movement of the screen assembly 48 is in the forward direction and in the vertical direction.
    In order to change the orientation of the shaft 72, the drive 70 is fixed to a turntable 90 which is rotatable about the vertical axis by means of an actuator 92 in the form of an electric or hydraulic motor with respect to the screen box 68 and the frame of the lower screen 52 , The actuator 92 is connected to a controller 94 (see Figure 1), which in turn is connected to a sensor 96 for detecting the slope of the side slope and / or a sensor 98 for detecting the transverse distribution of the crop on the upper sieve 50. The sensor 96 includes a gyro or pendulum whose position is detected. The sensor 98 includes a camera and an image processing system. The sensor 98 could alternatively or additionally include baffle sensors distributed across the width of the screen 50 and / or the screen 52 across its width, which detect impinging grains. Accordingly, the controller 94 has data on the side slope of the combine 10 and / or the transverse distribution of the crop on the wire 50 and 52, respectively. To prevent accumulation of crop on side slopes of the screen assembly 48 during cropping, the controller 94 controls the actuator 92 during picking operation such that the screen assembly 48 increasingly swings toward the downhill side to augment the crop to promote to this side and distribute evenly on the sieve 50,52.
    The controller 94 may also be supplied with data regarding the respective crop throughput provided, for example, by the sensor 98 or a sensor for detecting the drive torque of the electric or hydraulic motor 86 of the drive 70. Based on these data, the controller 94, the speed of the electric or hydraulic motor 86 vary in order to adjust the oscillation frequency and the amplitude dependent thereon to the respective Emtegutdurchsatz can. It would also be possible to vary the length of the rod 76 by means of an actuator (not shown) in order to be able to vary the amplitude of the oscillatory movement independently of the frequency.
    权利要求:
    Claims (8)
    [1]
    claims
    A screen assembly (48) for a combine harvester (10) having at least one perforated screen (50, 52) and a drive (70) in drive connection with the screen (50, 52) to which the screen (50, 52 ) is displaceable in a swinging motion, characterized in that the drive (70) comprises a rigidly coupled to the sieve (50,52) mass oscillator, and that the direction of vibration of the mass oscillator is adjustable about the vertical axis.
    [2]
    2. sieve arrangement (48) according to claim 1, characterized in that the frequency of the mass oscillator is adjustable
    [3]
    3. sieve arrangement (48) according to claim 1 or 2, characterized in that the mass oscillator comprises an eccentrically mounted on a rotatably driven shaft (72) mass (74) which converts the rotational movement of the shaft (72) in a swinging motion and that the Shaft (72) in its position about the vertical axis and / or in its rotational speed is adjustable.
    [4]
    4. sieve arrangement (48) according to one of claims 1 to 3, characterized in that the sieve (50, 52) in horizontal and / or vertical and / or lateral Richteng pendulum or resiliently suspended.
    [5]
    5. sieve arrangement (48) according to one of claims 1 to 4, characterized in that the mass oscillator via a flexible drive shaft or an electric or hydraulic motor (86) is driven, whose output shaft is rigidly connected to the shaft (72) and the is powered by flexible lines (88).
    [6]
    6. sieve arrangement (48) according to one of claims 1 to 5, characterized in that the oscillation direction of the mass oscillator by means of an actuator (92) about the vertical axis is adjustable, and that the actuator (92) is connected to a controller (94), which can control the actuator (92) as a function of a side slope inclination detected by means of a sensor (96) and / or a transverse distribution of the emmental on the sieve (50, 52) detected by means of a sensor (98).
    [7]
    7. sieve arrangement (48) according to one of claims 1 to 6, characterized in that in a sieve box (68), a lower sieve (52) and an upper sieve (50) are mounted, and that the mass oscillator with the sieve box (68) connected is.
    [8]
    8. Combine harvester (10) with a sieve arrangement (48) according to one of claims 1 to 7.
    类似技术:
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    EP3072378B1|2018-01-24|Grain flow sensor assembly for a combine harvester
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    DE102008040128B4|2016-04-28|Erntegutrestehäcksel and -istribution arrangement for a combine harvester with a matched to the contour of the straw chopper throwing fan
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    同族专利:
    公开号 | 公开日
    DE102009000797A1|2010-08-19|
    DE102009000797B4|2017-05-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2200724A|1937-01-18|1940-05-14|Samuel D Robins|Means for producing gyratory motion|
    DE1283582B|1965-07-03|1968-11-21|Krupp Gmbh|Resonance vibration device|
    DE1993476U|1966-11-09|1968-09-05|Heinz Hoelter|MASS SWINGERS.|
    DE2753505A1|1977-12-01|1979-06-07|Georg Dr Ing Segler|Flow measuring system for combine harvester - has air pressure probes mounted in path between blower and sieves|
    US6412260B1|2000-10-25|2002-07-02|Case Corporation|Direct drive system with a flywheel for an agricultural combine|
    EP1712122A1|2005-04-12|2006-10-18|CLAAS Selbstfahrende Erntemaschinen GmbH|Drive system for an apparatus for conveying crop|
    DE3332763C2|1983-09-10|1987-10-01|Claas Ohg, 4834 Harsewinkel, De|
    DE19908696C1|1999-02-26|2000-10-26|Univ Dresden Tech|Corn thresher with a corn cleaning stage has an oscillating sieve box with coupled mechanisms to oscillate the sieve on two separate axes for effective separation of straw and chaff without clogging|
    EP1595435B1|2004-05-11|2011-07-27|CLAAS Selbstfahrende Erntemaschinen GmbH|Cleaning device for a combine|
    GB2415349A|2004-06-22|2005-12-28|Cnh Belgium Nv|Grain cleaning system for a combine harvester.|US8622791B2|2011-10-28|2014-01-07|Deere & Company|Cleaning shoe|
    BE1021870B1|2014-04-22|2016-01-22|Cnh Industrial Belgium Nv|DRIVE WITH A VARIABLE BATTLE FOR A CLEANING SYSTEM IN A HARVESTING MACHINE.|
    BE1022310B1|2014-04-22|2016-03-15|Cnh Industrial Belgium Nv|CUTTERS|
    DE102019122763A1|2019-08-23|2021-02-25|Claas Selbstfahrende Erntemaschinen Gmbh|Harvester|
    DE102019125489A1|2019-09-23|2021-03-25|Claas Selbstfahrende Erntemaschinen Gmbh|Pivoting device for the even distribution of goods on a conveying and cleaning element|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102009000797.0A|DE102009000797B4|2009-02-12|2009-02-12|Sieve arrangement for a combine harvester|
    DE102009000|2009-02-12|
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