• 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:
    An apparatus for mowing crop comprises a series of mowing units disposed side by side and each having a knife holder (6a, 6b) with at least one knife-carrying portion (12) for a mower blade (7, 307) and a drive mechanism for the knife holder each with one first drive member (20, 40) and a second drive member (30) for rotationally driving the blade holder (6a, 6b) about a vertical centerline (R1). The drive mechanism includes a rotatably driven drive shaft (310) for the mowing blades (307) which extends substantially in the direction of the row through interconnected housings (308, 309) of the mower units. The mower blade (307) is rotatably mounted about a blade centerline (R2) near the edge of the blade holder (306) in the area of the blade (307) bearing portion about the blade centerline (R2), the radial distance between the blade centerline (R2) and the radially outer surface of the relevant housing (308) is greater than the distance between the knife center line (R2) and the knife end (307a).
    公开号:AT13639U1
    申请号:TGM96/2013U
    申请日:2008-11-12
    公开日:2014-05-15
    发明作者:Der Ent Willem Arie Van；Maarten Koorn；Jelle Fredo Oudemans；Shane A Bollinger
    申请人:Lely Patent Nv；
    IPC主号:
    专利说明:

    Austrian Patent Office AT 13 639 Ul 2014-05-15
    description
    MOWING DEVICE FOR HARVEST
    The invention relates to a mowing device for crops such as grass of the type specified in the preamble of claim 1.
    An example of such a mowing device is disclosed in EP-A-0 126 518. In this case, the drive mechanism comprises a drive shaft which extends in the direction of the rows of knife holders. For the transmission from the drive shaft to the knife holder, a housing is used each time, which is arranged at one end with a conical gear and secured to the drive shaft. Another conical gear is engaged with the first gear and has a vertical axis of rotation. The other gear together with a hub forms a rotatable unit, which is supported in a housing and which carries and rotates the knife holder. In the known device, the knife holder and the hub are connected to each other by means of a scoop and a single central nut connection.
    The invention has for its object to provide a generic mowing device, which is improved in maintaining the effective length of the mowing blades.
    This object is achieved by a mowing device for crop with the features of claim 1.
    In this mowing device, a significant advantage is the fact that in the case of an impact of a knife on an object the possibility for the knife is given to be pivoted in any position of the rotation angle inwards and thus the arrangement can continue to rotate freely without colliding with fixed components of the mowing device.
    The device for mowing crop comprises a number of mower units, which are arranged side by side with intermediate distances. The mowing units each comprise a knife holder with at least one knife-carrying portion for a mowing blade and a drive mechanism for the knife holder. In this case, the drive mechanism for each knife holder comprises a first drive element, which has a hub portion carrying the knife holder. This is drivingly engaged with a second drive member of the drive mechanism to rotationally drive the knife holder about a vertical centerline. The first drive element comprises a first gear, which forms a rotatable unit with the hub portion. The drive mechanism further includes a rotatably driven drive shaft for the mowing blades in common, which extends substantially in the direction of the row through interconnected housings of the mowing units and is supported therein bearing. The drive shaft can be coupled to an external drive device, such as a PTO shaft of a tractor. The second drive element comprises a second gear, which forms a rotatable unit with the drive shaft and together with the first drive element forms a transmission, which is arranged bearing-supported in the corresponding housing. The gearbox drives the hub body. The mowing blade is mounted about a knife edge line, which is at least substantially parallel to the rotation center line, near the edge of the knife holder in the region of the knife-carrying portion in a manner in which it is rotatable about the knife center line, wherein, viewed in the rotation plane of the mowing blade Radial distance between the knife center line and the radially outer surface of the housing is greater over the entire rotation than the distance between the knife center line and the knife end.
    According to a preferred embodiment of the invention it is provided that the hub portion comprises a hub flange which carries the knife holder and which is coaxial with the first gear, wherein the hub flange and the first gear are rotatably connected to each other and the first drive element between the first Gear and the hub flange forms an axial body, which is integrally formed with the Nebenabschnitt 1/11 Austrian Patent Office AT 13 639 U1 2014-05-15. The axial body is disposed in a cylindrical wall-forming member with bearings provided between this wall and the axial body. It is also expedient that the axial body is at least partially formed on the hub flange.
    In an advantageous embodiment of the invention, the drive shaft between successive mowing units is received in bores of intermediate housings, which connect the drive housing of the mowing units together, wherein the ends of the intermediate housing are formed so that they have a structural end edge, wherein an axial projection of the end edge fits snugly in an opening of the drive housing and a radial portion rests against an edge of the drive housing. It is further advantageous to provide the second gear at one end of the drive housing, which is adapted in a rotationally fixed manner to the drive shaft, wherein the end edge of the intermediate housing forms an axially aligned end edge, which extends close to the shaft bearing. It is particularly expedient if shaft bearings are arranged at both ends of the drive housing. It has proven to be advantageous that the distance between the knife center line and the knife end is about 1 dm or more.
    The invention is explained in more detail for example with reference to the drawing figures. In the drawing shows:
    Fig. 2 Fig. 4C is a schematic plan view of an exemplary embodiment of a mowing device according to the invention attached to Figs a tractor is coupled; an isometric and partially cutaway view of a portion of a mowing unit of the mowing apparatus of Figure 1 in a first embodiment. an oblique view of a break plate of a mowing unit of the embodiment of Fig. 2; an isometric and partially cutaway view of a portion of a mowing unit of another embodiment of a mowing device according to the invention; B is a longitudinal sectional view and a cross-sectional view of a mowing unit for the mowing apparatus of Fig. 3; the detail IV in Fig. 4A.
    Figure 1 shows a tractor 1, which has a three-point suspension 2 and a PTO shaft 3. A cutter support 4 is fixed to the three-point hitch 2, the power take-off shaft 3 is connected to the drive mechanism 51 via the drive member 50. The cutter 5 is fixed to the drive mechanism 51 and to the cutter support 4. The cutting unit 5 carries a series of oval mowing discs or knife holders 6a, 6b, which are arranged successively so as to be rotated through 90 °, and comprise a cap 13 (Figure 2), which at its edge meter-carrying portions 12 for two opposite each other arranged knife 7 has. During operation, the tractor 1 moves in the direction A. The knife holders 6a, 6b can be rotated in the directions B and C, for example.
    Figure 2 shows that the cutting unit 5 is composed of modules, in this example of drive housings 8 and arranged between these intermediate housings. The housings 8 and 9 are tightened together by means of a pull rod which is not shown and extends in a longitudinal direction. A drive shaft also extends through the housings 8, 9, the drive shaft being drivingly engaged with a conical gear at the position of each drive housing 8.
    A first drive element comprises a conical gear 20 and a hub portion 40. The gear 20 is fixed to a journal or shaft of the hub portion 40 in a substantially axially fixed and rotationally fixed manner. The shaft is equipped with a hole with a maximum screw thread. The toothed wheel 20 of the first drive element is drivingly engaged by means of a toothing with the conical gear 30, which forms a second drive element.
    The first drive member of the hub portion 40 / gear 20 is rotatably supported in the hollow shaft or construction 70, which is secured to the drive housing 8 by means of a flange. By means of a central screw 14, which is screwed into the bore, and a pressure cap 15, the knife holder 6a, 6b is fixed together with the cap 13 in an axial direction on the flange of the hub portion 40 and is in this housing by means of the central plate or a Cap portion held on the upper surface of the flange. In the central plate portion, there is provided a passage 18a having radial recesses 19a in the circular edge 66a. The thickness of the cap portion corresponds to the height of a projecting portion of the flange.
    In this case, the interruptible connection is formed by a crushing plate or crushing ring 60a shown in Fig. 2A, which forms a ring 61a with a hole 64a and which projects radially outward projections 62a projecting from the circular edge 67a , and is provided with radially inwardly projecting projections 63 a, which project from the circular edge 68 a. The extensions 62a and / or 63a are connected to the rest of the ring 61a via predetermined breaking points and then form interruption elements. The ring 61a fits snugly into the passage 18a in the cap 13 and the projections 62a fit into congruent depressions 19a. The projections 63a fit into congruent radial recesses formed in the protruding portion of the flange, the protruding portion having a circular edge 69a. In this case, the hole fits the protruding portion and functions as a centering member for the cap 13 relative to the rotational centerline of the hub portion 40. The edges 66a, 67a, 68a and 69a are concentric with each other.
    When a knife 7 hits an obstacle, overloading of central and more remote parts of the drive mechanism by breaking the extensions 62a and / or 63a is prevented. Mutual engagement by edges 66a and 67a or edges 68a and 69a ensures that the knife holder remains centered. The axial separation of the knife holder 6 and the hub portion 40 is prevented by the cap 15. After breaking, the cap 15 can be removed and the ring 61a replaced.
    Alternatively, the extensions may be provided on the knife holder cap 13 and / or the projection 45 of the hub portion 40, in which case the ring 61a is provided with mating recesses. In this case, these extensions are connected to the cap 13 / hub portion 40 in a manner in which they can be broken off. In this case, however, the knife holder cap 13 and / or the hub portion 40 must be exchanged. In another alternative, the ring 61a is missing and the knife holder 13 and the hub portion 40 are fitted with mating radial extensions and recesses and interdigitated concentric edge portions. Also, in this case, the knife holder cap 13 or the hub portion 40 must be replaced. Said ring 61a forms an additional component, but increases the chance that the knife holder cap 13 and the hub portion 40 need not be replaced.
    The knife holder 306a is fixed together with the knife holder cap 313 on the hub 340, in particular the flange 342 thereof by means of screws 316, which extends through the screw holes 317th extend. The screw heads may be covered by small caps 314 which are fastened with a small screw 315.
    Referring to Figs. 4A and 4B, the knife holder cap 313 is rotatable about R1 along with the hub 340, see Fig. 4A. The second conical gear 320 is mounted for rotation with the hub 340 by engaging an external screw thread at the end 344 of an axle 341 of the hub 340 in an internal screw thread in the bore 323 of the gear 320. The knife holder cap 313 is oval, the knives 307 are attached at their longitudinal ends in the area of the knife 307 carrying portions 312 by means of pins 380, the blades 307 rotating about the pins 380 are (R2, see Figure 4A). The knives have a free end 307a and an inner end 307b where the pin 380 is located. The assembly hub 340 / gear 320 is rotatably supported within the hollow axle or member 370, which is fixedly connected to the drive housing 308 by means of a flange.
    Angular bearing 360 are disposed and biased between the housing 372 of the device 370 and a pin 341 of the hub 340. Due to the simple manner in which the second gear 320 is connected to the hub 340, only one axial body in the shape of the pin 341, which has a radial outer dimension D1, is present in the bearings 360. Therefore, the radial outer dimension of the bearings 360 can be kept limited and hence the radial outer dimension of the component 370 and the flange 371 and thus the radial outer dimension D2 of the upright wall 391 of the drive housing 308, at the upper edge 390 of the structure 370 is attached ,
    In the assembled state shown in Figs. 4A and 4B, the drive shaft 310 extends through a drive gear 330 provided as a second gear, the internally toothed bore of the drive gear 330 projecting in a splined manner (wedge) with external teeth the drive shaft 310 is located so that the drive wheel 330 rotates together with the drive shaft 310. In this case, the drive wheel 330 is bearing-supported in a drive housing 308 by means of the bearings 336. At one end, the drive wheel 330 is provided on its outside with a first conical tooth arrangement 333, which has a toothing 334. The toothing 334 is engaged with the toothing 322 of the second conical gear 320.
    The bearings 336 are held axially outwardly by the axially directed top edge surface 394 of the end edge 393 of the intermediate housing 309, see also the detail of FIG. 4C. Radially outward of the top edge surface 394, the end edge 393 is stepped, having an axial edge portion (collar) 395 and a shoulder 396. The intermediate housing 309 fits by means of the shoulder 396 against the end edge 397 of the drive housing 308, wherein the axial edge portion 395 fits closely to the opening 398 (see also Figure 3) of the housing 308. By means of this connection between the two housings 308 and 309, it is possible to keep the axial length of the drive housing 308 within limits. A mounting ring and possibly also a bearing retaining ring are dispensable.
    On the upper side, axially a short distance behind the end edge 393, the intermediate housing 309 is stepped (399), so that a space for a knife end 307a in the inwardly rotated position (shown by the dashed lines) of the blade 307 ' is available. The dimension S1 of the outer surface of the step 399 to the pin 380 is greater than the distance S2 (1 dm or more) from the pin 380 to the blade end 307a. Since the step 399 is located slightly outside the wall 391, the knife end 307a, also in the cutting plane of FIG. 12b, hits the drive housing 308 and the intermediate housing 309, so that the knife ends 307a are capable of the entire rotation of the knife holder cap 313, to rotate inward without hitting the housing 308. 4.11
    权利要求:
    Claims (8)
    [1]
    Austrian Patent Office AT13 639 U1 2014-05-15 Claims 1. A device for mowing crops, comprising a series of mowing units arranged side by side with intermediate spaces, the mowing units each carrying a knife holder (6a, 6b) with at least one knife Section (12) for a mowing blade (7) and a drive mechanism for the knife holder, wherein the drive mechanism for each knife holder (6a, 6b) comprises a first drive element (20, 40) which has a hub holder (40, 340) supporting the knife holder and which is drivingly engaged with a second drive member (30) of the drive mechanism for rotationally driving the knife holder (6a, 6b) about a vertical centerline (R1), characterized in that the first drive member comprises a first gear (20, 320), which forms a rotatable unit with the hub portion (40, 340), wherein the drive mechanism further comprises a dre Hend driven drive shaft (310) for the mowing blades (307) in common, which extends substantially in the direction of the series through interconnected housings (308, 309) of the mowing units and is supported therein and can be coupled to an external drive device such as a A PTO of a tractor, wherein the second drive element comprises a second gear (330) which forms a rotatable unit with the drive shaft (310) and together with the first drive element (320) forms a transmission which is bearing-mounted in a drive housing (308) to drive the hub portion (340), the mowing blade (307) supporting about a knife edge line (R2) at least substantially parallel to the rotation center line (R1) near the edge of the knife holder (306) in the area of the knife (307) Section is mounted in a manner in which it is rotatable about the knife edge line (R2), wherein, in the plane of rotation of the M considered hmessers (307), the radial distance between the blade center line (R2) and the radially outer surface of the relevant housing (308) is greater than the distance between the blade center line (R2) and the blade end (307 a).
    [2]
    The apparatus of claim 1, wherein the hub portion (340) includes a hub flange (342) supporting the knife holder (306) and which is coaxial with the first gear (320), the hub flange (342) and the first gear (320 ) are rotationally fixed to one another and the first drive element between the first gear (320) and the hub flange (342) forms an axial body (341) formed integrally with the hub portion (320).
    [3]
    The apparatus of claim 2, wherein the axial body (341) is at least partially formed on the hub flange (342).
    [4]
    The apparatus according to claim 2, characterized in that the axial body (341) is disposed in a cylindrical wall forming member, bearings (360) being provided between said wall and the axial body (341).
    [5]
    5. Device according to one of claims 1 to 4, wherein the drive shaft (310) between successive mowing units in bores of intermediate housings (309) is received, which connect the drive housings (308) of the mowing units together, wherein the intermediate housings are formed so that they a stepped end edge (393), wherein an axial projection of the end edge (393) fits tightly into an opening of the drive housing (308) and a radial portion (396) abuts an edge (397) of the drive housing (308). 5/11 Austrian Patent Office AT 13 639 U1 2014-05-15
    [6]
    6. The apparatus of claim 5, wherein the second gear (330) is provided near one end of the drive housing (308) which is adapted in a rotationally fixed manner to the drive shaft (310), wherein an end edge of the intermediate housing (309) an axial aligned end edge forms, which extends near the shaft bearing.
    [7]
    7. Apparatus according to claim 6, wherein at both ends of the drive housing (308) shaft bearings (336) are arranged.
    [8]
    The apparatus according to any one of claims 1 to 7, wherein the distance between the knife center line (R2) and the knife end (307a) is about 1 dm or more. For this 5 sheets drawings 6/11
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0774202B1|2000-07-05|Tool carrier
    DE2722554C2|1990-07-12|Mower with a rotary mower
    AT13639U1|2014-05-15|Mowing device for crop
    EP1570719B1|2007-01-10|Cutting apparatus, especially lawnmower
    DE1299157B|1969-07-10|Mower
    EP0460491A1|1991-12-11|Work tool, especially a cutter bar, with several modules and a method of assembly of a work tool
    DE3102598C2|1991-04-18|
    EP1319331A1|2003-06-18|Fastening mechanism to fasten a knife to the rotor of a straw chopper
    EP0765595B1|1999-03-31|Mowing apparatus
    DE2806170C2|1983-12-15|mower
    DE3017856C2|1989-08-10|
    EP0355365B1|1994-01-12|Lawn mower
    DE102007007242B4|2010-04-22|mower
    DE102004028550A1|2006-01-19|Reel for a Erntegutbergungseinrichtung
    DE3439226C2|1986-09-18|Mower
    EP2929992B1|2017-07-19|Blade holder for a cutting machine
    EP1353544B1|2006-09-13|Cutting and transport device for a line-independent cutting tool
    DE2445178A1|1975-04-03|MOWER
    DE2703301A1|1978-08-03|MOWER
    DE102016213919A1|2018-02-01|Suspension of a knife of a stalk chopper for a maize harvester
    EP0878120B1|2001-08-16|Mowing machine
    EP3360405B1|2021-04-14|Cutting head for a motor strimmer
    DE19522056C2|1999-06-24|Chopper drum
    DE102020114978A1|2021-12-09|Dosing device for dosing the material to be dosed
    DE102017223793A1|2019-06-27|cutting disc
    同族专利:
    公开号 | 公开日
    DE202008018379U1|2013-05-21|
    DE202008018380U1|2013-05-21|
    US8327612B2|2012-12-11|
    EP2209361B1|2012-10-03|
    WO2009064173A2|2009-05-22|
    EP2209361A2|2010-07-28|
    AT13660U1|2014-05-15|
    US20110011049A1|2011-01-20|
    WO2009064173A3|2009-07-02|
    引用文献:
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    DE19720956C2|1997-05-17|2002-08-22|Krone Bernhard Gmbh Maschf|mower|
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    US7988380B2|2007-09-28|2011-08-02|Cnh America Llc|Seal hub for protection of seal and bearing from metal fragments due to shearing of a shock device|
    US7942748B2|2007-09-28|2011-05-17|Cnh America Llc|Annular groove in a shock protection device|CN102301862B|2011-07-07|2014-07-16|宁波大叶园林设备有限公司|Improved grass cutter with self-clutched blade|
    US10453561B2|2012-12-28|2019-10-22|Volcano Corporation|Multi-modality case explorer system and method|
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    法律状态:
    2019-01-15| MK07| Expiry|Effective date: 20181130 |
    优先权:
    申请号 | 申请日 | 专利标题
    US98762307P| true| 2007-11-13|2007-11-13|
    NL1034693A|NL1034693C2|2007-11-14|2007-11-14|Mowing device for, e.g. grass, includes hub portion and knife holder which are combined forming a rotatable assembly provided with break connection between knife carrying portion and hub portion along radial direction|
    NL1034690A|NL1034690C2|2007-11-14|2007-11-14|Mowing device for, e.g. grass, includes hub portion and knife holder which are combined forming a rotatable assembly provided with break connection between knife carrying portion and hub portion along radial direction|
    NL1034691A|NL1034691C2|2007-11-14|2007-11-14|Mowing device for, e.g. grass, includes hub portion and knife holder which are combined forming a rotatable assembly provided with break connection between knife carrying portion and hub portion along radial direction|
    NL1034692A|NL1034692C2|2007-11-14|2007-11-14|Mowing device for, e.g. grass, includes hub portion and knife holder which are combined forming a rotatable assembly provided with break connection between knife carrying portion and hub portion along radial direction|
    NL1035847A|NL1035847C2|2007-11-14|2008-08-19|Cutting device with impact protection.|
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