• 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:
    it is an improved cutter assembly for use with a harvester header. an assembly includes a pair of opposing knife blades or cutter bars and a central knife drive. a crankshaft drives both razor blades on linear reciprocating paths without anterior and posterior movement. as a consequence, the harmful anterior and posterior vibration is eliminated. assembly is simple and durable in design, less susceptible to vibration-induced wear and tear and comparatively simple to manufacture and repair.
    公开号:BR102014031387B1
    申请号:R102014031387-7
    申请日:2014-12-15
    公开日:2020-07-14
    发明作者:Seth Michael Bich
    申请人:Cnh Industrial America Llc；
    IPC主号:
    专利说明:

    BACKGROUND
    [001] The present application generally concerns platforms for agricultural harvesters. In particular, the present application relates to a platform that includes an improved harvester cutter assembly to drive reciprocating or oscillating linearly driven knife blades.
    [002] Agricultural harvesters such as combine harvesters are well-known devices for harvesting grain crops. An agricultural harvester is typically a self-propelled vehicle that includes a feeder and mechanisms downstream of the feeder to separate the grain from other crop material. A platform is attached to the front of the harvester and includes mechanisms to cut the crop, harvest the crop and deliver the crop to the harvester feeder. A typical crop cutter includes a stationary knife and a movable knife that together act as pruners that cut the crop close to the ground. After cutting, the harvest is harvested, for example, by a harvesting reel that feeds the harvested crop to a conductive system that transports the cut sa-fra to the harvester feeder.
    [003] Typical agricultural harvester cutter assemblies include a pair of opposing knife blades, each of which is formed of a plurality of sickle sections that are attached to a knife back. Each rear part of the knife, in turn, is connected to a knife drive. In conventional cutter assemblies, the knife blades are pivotally connected to the knife drives through which the knife drives propel the knife blades through a trajectory similar to a non-linear motion arc. When crossing the arc, the knife blades move not only from side to side (that is, transversal to the direction of movement of the harvester), but also forward and backward (that is, in the direction of movement of the harvester). The anterior and posterior motion of the knife blades results in the introduction of front and rear vibration in the cutter assemblies which adds additional stresses to the knife blades and adversely affects the life of the knife drives.
    [004] In addition, the sickle knife drives of today's agricultural harvesters are complex in construction with many moving parts that include multiple crankshafts and gears. In a typical arrangement, at least one crankshaft and a gear are required to drive each knife blade and the interaction of these components needs to be carefully coordinated in order to move the knife blades in sync. The complexity of such knife drives makes manufacturing and repairing them difficult and costly while increasing their susceptibility to failure, which can adversely impact harvesting productivity. BRIEF SUMMARY
    [005] According to a first aspect, the present application provides a cutter assembly for an agricultural harvester platform. The cutter assembly addresses the problems of vibration and undue design complexity due to its robust yet simple construction. The present order is directed to a cutter assembly that has a scythe knife drive that uses a single crankshaft and flywheel to reciprocate or linearly oscillate a pair of sickle blades or cutting bars in simple harmonic movements. The knife blades or cutting bars are coaxially arranged and opposite each other, and their linear reciprocity in a side-by-side direction eliminates the anterior and posterior motion and the corresponding anterior and posterior vibration that can be detrimental to knife drives. Since the motion of the knife blades or cutting bars is strictly linear and in opposite directions along a geometric axis of common reciprocity that is transversal to a direction of travel of the harvester, the vibration forces are minimized.
    [006] According to a second aspect, the present application provides a cutter assembly for an agricultural harvester platform that includes a knife drive, and in which the first and second cut bars are connected to the knife drive in side by side relationship. The knife drive includes a crankshaft that has a first cylindrical portion and a second cylindrical portion radially displaced with respect to the first cylindrical portion. A first eccentric pulley is mounted on the first cylindrical portion and a first eccentric rod extends from the first eccentric pulley. Likewise, a second eccentric pulley is mounted on the second cylindrical portion and a second eccentric rod extends from the second eccentric pulley. The first cutting bar is attached to a distal end of the first eccentric shank and the second cutting bar is attached to a distal end of the second eccentric shank. Crankshaft rotation provides linear oscillation of the first and second cutter bars.
    [007] According to a third aspect, the present application provides a sickle knife drive for an agricultural harvester platform. The sickle knife drive includes a housing, a crankshaft that has first and second meats swiveled by the housing, first and second connecting members and first and second pistons. The first and second connecting members have first and second ends. The first end of the first connecting member has a first cam follower to engage the first cam and the first end of the second connecting member has a second cam follower to engage the second cam. The first and second pistons have first and second ends. The first plunger is supported for linear movement at a first end of the housing and the second plunger is supported for linear movement at a second end of the housing opposite the first end. The first plunger is connected at the first end thereof to the second end of the first connecting member and the second end thereof to a first sickle knife assembly. The second plunger is connected at the first end thereof to the second end of the second connecting member and the second end thereof to a second sickle knife assembly. With the sickle knife drive being constructed in this way, the crankshaft rotation causes the first and second meat to rotate against the first and second meat followers and the linear reciprocating movement of the first and second pistons in opposite directions.
    [008] In accordance with a fourth aspect, the present application provides a drive mechanism for centralizing the knife drive of an agricultural harvester platform. The drive mechanism includes a crankshaft that has a first end and a second end opposite the first end, a flywheel gear, and the first and second eccentric jaws have external cam surfaces. The first eccentric pin is eccentrically arranged in relation to a rotational geometric axis of the crankshaft and adjacent to the first end of the crankshaft. The second eccentric journal is eccentrically arranged in relation to the rotational geometric axis of the crankshaft and adjacent to the first eccentric journal. The flywheel gear is coaxial with the rotational geometric axis of the crankshaft and adjacent to the second eccentric journal to functionally engage a driven input gear. The external meat surfaces of the first and second eccentric beams furthest from the crankshaft's rotational geometric axis are angularly displaced.
    [009] According to a fifth aspect, the present application provides a drive mechanism to centralize the knife drive of an agricultural harvester platform. The drive mechanism includes a first connection member and a second connection member. The first connecting member has a first end adapted to receive a first eccentric rod loaded by a rotatable crankshaft and a second end functionally connected to a first plunger. The second connecting member has a first end adapted to receive a second eccentric journal loaded by the rotating crankshaft and a second end functionally connected to a second piston. The first and the second plungers are coaxial and configured to reciprocate in opposite directions when triggered by the rotation of the saw. BRIEF DESCRIPTION OF THE DRAWINGS
    [010] The foregoing summary, as well as the following detailed description of various aspects of this application, will be better understood when read in conjunction with the accompanying drawings. For the purpose of illustrating the present application, various aspects are shown in the drawings, but it should be understood that the present application is not limited to the precise provisions and means shown.
    [011] In the drawings:
    [012] Figure 1 is a front elevation view of a conventional agricultural harvester that includes a platform;
    [013] Figure 2 is a schematic top plan view of a conventional knife drive applicable to the platform of Figure 1;
    [014] Figure 3 is a top plan view of a knife drive of a cutter assembly according to an aspect of the present application in a fully extended position;
    [015] Figure 4 is a top plan view of the knife drive of Figure 3 in a completely retracted position;
    [016] Figure 5 is an exploded perspective view of the knife drive of Figure 3;
    [017] Figure 6 is a view similar to Figure 3 with certain elements of the knife drive omitted for clarity of illustration;
    [018] Figure 7 is another top plan view of a cutter assembly according to an aspect of the present application in a fully extended position;
    [019] Figure 8 is an enlarged partial view of Detail A of Figure 7;
    [020] Figure 9 is a partial enlarged view of Detail C of Figure 8; and
    [021] Figure 10 is an enlarged partial view of Detail B in Figure 7. DETAILED DESCRIPTION
    [022] Reference will now be made in detail to the various aspects of this application illustrated in the attached drawings. Where possible, the same or similar reference numbers will be used by all drawings to refer to the same or similar characteristics. It should be noted that the drawings are in a simplified form and are not drawn on a precise scale. In reference to the disclosure in this document, for purposes of convenience and clarity only, directional terms such as top, bottom, left, right, above, below and diagonal are used in connection with the accompanying drawings. Such additional terms used in conjunction with the following description of the drawings should not be construed as limiting the scope of the present application in any way or explicitly presented. In addition, the term “one”, as used in the specification, means “at least one”. The terminology includes the words specifically mentioned above, derived from them and similar words.
    [023] Referring now to the drawings, in which aspects of the present application are shown, Figure 1 illustrates a conventional combine harvester 10 such as a combination. Harvester 10 includes a platform 12 which is attached to a front end 14 of the harvester and which is configured to cut crops and induce cut crops in a feeder 16 as harvester 10 moves forward over a crop field.
    [024] Platform 12 includes a floor 18 that is supported in desired proximity to the surface of a crop field and an elongated scythe assembly 20 that extends transversely along a front edge of the floor 18, that is, in a direction towards the width of the harvester. The scythe assembly 20 is configured to cut crops in preparation for induction in the feeder 16. Additionally, the platform 12 includes an elongate mowing coil that extends transversely 22 arranged above the scythe 20. The mowing coil 22 is rotatable in one direction suitable to facilitate the induction of cut crops in the feeder 16. The platform 12 additionally includes an elongated rotatable auger 24 which extends in proximity to a top surface 26 of floor 18. Auger 24 is configured to cooperate with the harvesting coil 22 when driving cut crops to feeder 16, which is configured to drive cut crops to harvester 10 for trail and cleaning. Although the aforementioned aspect of this application is being described in relation to a platform for the textile industry, the cutter assembly of this application can be applied to any other platform that has use for a knife assembly or sickle section.
    [025] The sickle mount 20 extends along a front edge 28 of the floor 18 and is generally bounded by a first side edge 30 and a second side edge 32 of the floor 18. The sickle mount 20 can be configured to include a first movable knife assembly 34 and a second movable knife assembly 36 (together with a stationary knife not shown). The mechanisms of such knife assemblies are known in the art and a typical mechanism is disclosed in US Patent No. 8,151,547, the full disclosure of which is incorporated by reference in this document.
    [026] Referring to Figure 2, a conventional sickle knife drive 38 is schematically revealed which reveals the motion path imposed by the knife firing on a pair of moving knives or oppositely directed cutting bars. For simplicity and clarity of illustration, crankshafts and sickle 38 drive gears are omitted. As is known with such knife drives, at least one crankshaft is associated with each knife blade or movable cutting bar. That is, each knife or cutting bar has its own crankshaft in which at least two separate crankshafts are required to move the pair of knives. The knife drive 38 includes a housing 40 in which the first and second members 42 are supported to pivot the motion at pivot points 44. A first end of each member 42 is operated in a functional manner by a non-illustrated crankshaft and a second ex-tremor of each member 42 is connected to a movable knife 46 (only one is shown in Figure 2). As each pivot member 42, this oscillates its respective movable knife 46 through an arcuate trajectory 48. Through this, the knives travel not only from side to side (that is, transversal to the direction of movement of the collector), but also forward and backward (that is, in the direction of movement of the harvester). The distance that the mobile knives travel in the anterior and posterior direction is indicated by reference “X”. Through the path in the anterior and posterior direction as well as in the side to side directions, the mobile knives 46 introduce the anterior and posterior vibration into the system. Such vibration not only stresses the knives themselves, but also exerts damaging forces on the moving parts of the knife drive assembly, for example, crankshafts and gears. As will be appreciated, the anterior and posterior vibration created by the pivoting knives eventually leads to the accelerated failure of the knife drive over time.
    [027] Referring to Figures 3 to 5, several views of a "central" or centrally located knife drive 50 are shown for an agricultural platform cutter assembly related to an aspect of the present application. The knife drive includes a housing 52 which includes first and second opposite ends 54, 56 and an opening 58 for receiving a geared input shaft which will be described in greater detail in conjunction with Figures 8 and 9. The drive knife blade 50 also includes a knife blade or cutting bar drive mechanism 59 for moving the cutting bars or knife blades in simple harmonic movements.
    [028] As best shown in Figure 5, the drive mechanism 59 includes a crankshaft 60 which has opposite first and second ends 62, 64. Crankshaft 60 additionally includes first and second grips 66, 68 which are eccentric with respect to a geometric axis of rotation of crankshaft 70 (i.e., an eccentric journal) and angularly displaced in the manner described in conjunction with Figure 6. The first and second journal act as meat as described in detail hereinafter. The first gripper can be configured as a cylindrical portion 66 located adjacent to the first end 62 of the crankshaft 60 and the second grinder can be configured as a cylindrical portion 68 located adjacent to the first cylindrical portion 66. Thus, the first and the second cylindrical portions they are angularly displaced between each other by about 90 to 180 degrees. However, the angular displacement can be greater or less than 90 to 180 degrees, such as 70, 80, 100, 110, 120, 130, 140, 160, 170, 190 and 200 degrees. Referring to Figure 5, the crankshaft additionally includes a flywheel 72 located adjacent to the second groove 68 and coaxial with the crankshaft rotation axis 70 to functionally engage a driven input gear, as shown in Figures 7 to 9. external meat surfaces of the first and second grinding portions 66, 68 furthest from the rotational axis 70 of the crankshaft 60 are angularly displaced from each other, and preferably angularly displaced by about 90 to 180 degrees, but may alternatively be angularly displaced by more than 180 or less than 90, such as 100 to 170 degrees or 80 to 190 degrees.
    [029] Referring to Figure 3, as will be seen, the drive mechanism 59 additionally includes first and second eccentric pulleys 74, 76 respectively mounted on the first and second grips 66, 68 with ex-center rods or members connector 78, 80 respectively extending in first and second opposite directions from the first and second eccentric pulleys 74, 76. A first end or proximal end 78a of the first connection member is mounted on or otherwise, engaged on the first rod 66 and a first end or proximal end 80a of the second connecting member is mounted on or otherwise engaged on the second rod 68. The second or distal ends 78b, 80b of the first and second members connecting rods 78, 80 extend in first and second opposite directions towards the first and second opposite ends 54, 56 of housing 52. That is, the first connecting member 78 is engaged in the first grinder 66 and extends in a first direction, and the second connecting member 80 engages in the second grinder 68 and extends in a second direction opposite to the first direction such that the rotation of the crankshaft 70 produces the reciprocal movement line from the ends of the first and second connecting members. As shown in Figures 3 to 6, the linear reciprocating movement of the end of the first connecting member 78 is in a direction opposite to the linear reciprocating movement of the end of the first connecting member 80.
    [030] Figures 3 and 4 show a pair of pistons 82, 84 pivotally connected at first ends 86, 88 of the same, for example, through pivots 90, 92 at the second ends 78b, 80b of the eccentric rods or members of connection 78, 80. That is, the first plunger 82 is pivotally connected to the first connecting member 78 and the second plunger 84 is pivotally connected to the second connecting member 80. The second ends 94, 96 of the plungers 82, 84 are connected to the first and second sickle knife assemblies. More particularly, the second ends of the plungers can be joined such as by gripping or similar to the scythe bar coupling members 98, 100 which are respectively attached to the first and second cutting bars or sickle blades 102, 104 (Figures 7 and 10). As seen in Figures 3 to 5, the first and second eccentric rods or the first and second connecting members 78, 80 can be arched or curved in shape to more effectively convert the rotational motion of crankshaft 60 into motion reciprocating or oscillating linear piston 82, 84. The pistons 82, 84 are coaxially arranged with each other and are mounted for reciprocating or oscillating linear motion within the first and second opposite ends 54, 56 of housing 52. To facilitate the slide of the pistons 82 .84 inside the first and second opposite ends of the housing, non-illustrated bearings or bushings that surround the pistons can be provided as well as seals to keep the oil inside the housing.
    [031] With reference to Figure 5, it will be seen that the first ends 78a, 80a of the first and second eccentric rods or connecting members 78, 80 include first grip portions 78c, 80c and second grip portions 78d, 80d. The first gripping portions 78c, 80c engage cooperatively with the second gripping portions 78d, 80d for example, through threaded members 78e, 80e and nuts 78f, 80f (Figure 3) in order to form the complete eccentric pulleys 74, 76 shown in Figures 3 and 4. As will be appreciated, the second gripping portions 78d, 80d are moved from a first non-gripping position during the installation of connecting members 78, 80 to a second gripping position. grasp on mills 66, 68 upon completion of installation. That is, the second gripping portions 78d, 80d are movable in relation to the first gripping portions 78c, 80d between the first and second positions to hold the respective first and second grips 66, 68. In addition, as shown in Figure 5, in order to promote longer service life of the knife drive 50, the bearings 106 can be mounted within each of the first ends 78a, 80a of the first and second connecting members or eccentric rods 78, 80 between the first portions hold 78c, 80c and the second hold portions 78d, 80d.
    [032] As mentioned above, according to the present application, the rotational motion of crankshaft 60 is converted into a reciprocating or oscillating linear motion of the pistons 82, 84. This is achieved by the radial and angular displacement of the first and second bearings 66, 68 located on crankshaft 60 and its cooperation with the first and second eccentric rods 78, 80. Turning to Figure 6, where eccentric rods 78, 80 are omitted for clarity of illustration, the angular and radial displacement of the first and second cylindrical portions or grinders 66, 68 can be clearly seen. In particular, Figure 6 shows that the first and second rollers are radially displaced with respect to the crankshaft rotation axis 70 in order to establish the first and the second meat that cooperatively engage the meat followers defined by the first and second pulleys eccentric 74, 76 shown in Figures 3 and 4. The first and second meats are thus eccentrically arranged in relation to the crankshaft.
    [033] According to one aspect of the present application, the first and second meat can be correspondingly received within the cam followers in order to minimize vibration and ensure the smooth transition from rotational crankshaft motion to linear piston motion. As noted, the first and second meat are angularly displaced around each other around the geometric axis of rotation of the crankshaft. This angular or circumferential displacement is indicated by the angle “a” in Figure 6. As seen in Figure 6, the first and second coaxially arranged pistons 82, 84 define a common reciprocal geometric axis 108 that is perpendicular to and separate from the geometric axis of rotation crankshaft 70 over distance “D”. The angle a is in the range of about 90 to 180 degrees. That is, the meat surfaces of the first and second meat (that is, the first and the second eccentric rods 66, 68) that are further from the rotational geometric axis of the crankshaft can be angled or circumferentially separated by about 90 to 180 degrees, but can be more or less than 90 or 180 degrees, such as 70, 80, 100, 100, 110, 120, 130, 140, 150, 160, 170, 190 and 200 degrees.
    [034] Referring to Figure 7, a cutter assembly 110 shown in accordance with an aspect of the present application is shown. The cutter assembly 110 includes the central knife drive 50 to which is attached a pair of sickle bar coupling members 98, 100 which, in turn, are connected to a pair of cutting bars or knife blades 102, 104 An enlarged view of the connection between the scythe bar coupling member 100 and the cutting bar 104 is shown in Figure 10. The cutting bars 02, 104 extend in opposite directions and are arranged in a side-to-side relationship. As will be described below, cutter bars 02, 104 are coaxial and move in opposite directions in a reciprocating or oscillating linear motion path, for example, the linear oscillation of the first and second cutters is simple harmonic movement.
    [035] Figure 8 shows an enlarged view of a knife drive portion 50, in particular the drive connection between the handwheel 72 and a rotatable input shaft 112 that extends through the housing opening 58 (Figures 3 to 5). The input shaft 112 can be driven by a hydraulic motor or PTO not shown in the manner known in the art. At its inner end, the input shaft 112 carries a gear 114 which engages a corresponding gear 116 on the flywheel 72. In this way, the flywheel 72 functionally engages the driven gear 114 of the input shaft 112 to rotate the crankshaft. As most clearly seen in Figure 9, gears 114, 116 can be cooperative chamfer gears. As seen in Figures 7 and 8, chamfer gear 116 on the face of the flywheel is coaxial with the rotational geometric axis of crankshaft 70. Although revealed as a defined chamfer gear, it will be understood that other gear arrangements, such as gears worm or pinion gears, may be suitable to achieve a drive connection between input shaft 112 and flywheel 72. In addition, although not shown, it is also contemplated that crankshaft 60 and therefore flywheel 72 , can be directly driven by the output shaft of a drive motor, that is, without the need for a geared connection.
    [036] Referring again to Figures 3 and 4, the operation of the sickle knife drive of the present order is shown with the pistons 82, 84 in the fully extended position (Figure 3) and in the fully retracted position (Figure 4). The plungers 82, 84 move between their end positions due to the rotation of the crankshaft. As noted above, crankshaft rotation can be achieved by a drive connection between the input shaft 112 (Figure 8) and the flywheel 72. As the crankshaft rotates around the geometry axis 70, the flywheel 72 and the first and the according to cylindrical members or grips 66, 68 they are designed to rotate in the same way. During such a rotation, the ex-eccentric meat surfaces of the first and second wheels travel the interior and exert a driving force, that is, meat against the first and second surfaces of the meat follower defined by the eccentric pulleys 74, 76. This force, in turn, incites the first ends of the first and second eccentric rods or connecting members 78, 80 to orbit in harmony around the geometric axis of rotation of crankshaft 70. During the course of such orbital motion, the first and second eccentric rods 78, 80 are reciprocally pulled towards each other (Figure 4) and pushed against each other (Figure 3) in equal and opposite directions in a simple harmonic motion. These pushing and pulling forces are transmitted to the pistons 82, 84 and finally to the cutting bars attached to the knife drive. By restricting only the reciprocating or oscillating linear motion, the pistons transmit such linear motion to the cutting bars in such a way that the anterior and posterior motion of the cutting bar and the corresponding anterior and posterior vibrations are essentially eliminated. In addition, due to the second ends of the first and second connection members that move in equal and opposite directions, lateral vibration is minimized, thereby resulting in a cutter assembly essentially free from vibration.
    [037] It will be appreciated by those skilled in the art that changes could be made in the aspects described above without departing from their broad inventive concept. It will be understood, therefore, that this application is not limited to the particular aspects disclosed, but is intended to cover modifications within the spirit and scope of this application as defined by the appended claims.
    权利要求:
    Claims (12)
    [0001]
    1. Assembly of cutter (110) for a platform (12) of an agricultural harvester (10) comprising: a knife drive (50) which includes: a housing (52), a crankshaft (60) which has a first portion cylindrical (66) and a second cylindrical portion (68) radially displaced with respect to the first cylindrical portion (66), a first eccentric pulley (74) mounted on the first cylindrical portion (66) and a first eccentric rod (78) which extends from the first eccentric pulley (74), and a second eccentric pulley (76) mounted on the second cylindrical portion (68) and a second eccentric rod (80) extending from the second eccentric pulley (76) ; a first cutting bar (102) attached to a distal end of the first eccentric rod (78); and a second cutting bar (104) attached to a distal end of the second eccentric rod (80), where the first and second cutting bars (102, 104) are in side-by-side relationship and in which the rotation of the crankshaft (60) provides linear oscillation of the first and second cutting bars (102, 104), FEATURED by the fact that the knife drive (50) additionally comprises: first and second pistons (82, 84) that have each first and second ends, wherein the first plunger (82) is supported for linear movement at a first end of the housing (52) and the second plunger (84) is supported for linear movement at a second end of the housing (52) opposite the first end, where the first plunger (82) is connected at the first end of the same to the second end of the first eccentric rod (78) and the second end of it being configured to connect to the first cutting bar (102), where the second plunger (84) is connected at the first end of it to the second end of the second eccentric rod (80) and the second end of it being configured to connect to the second cutter bar (104), and in which the crankshaft rotation (60) causes the rotation of the first and second cylindrical portions (66, 68) against the first and second eccentric pulleys (74, 76) and the linear reciprocating movement of the first and second pistons (82, 84) in opposite directions.
    [0002]
    2. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that the crankshaft (60) additionally comprises a flywheel (72) that operatively engages a gear (114) driven to rotate the crankshaft (60).
    [0003]
    3. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that the first and second eccentric rods (78, 80) are bent in shape.
    [0004]
    4. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that the first and second cylindrical portions (66, 68) are angularly displaced from each other.
    [0005]
    5. Cutter assembly (110) according to claim 4, CHARACTERIZED by the fact that the first cylindrical portion (66) is angularly displaced with respect to the second cylindrical portion (68) from 90 to 180 degrees.
    [0006]
    6. Cutter assembly (110), according to claim 1, CHARACTERIZED by the fact that the linear oscillation of the first and second cutting bars (102,104) is a simple harmonic movement.
    [0007]
    7. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that the second end of the first ex-centric rod (78) extends in a first direction and the second end of the second eccentric rod ( 80) extends in a second direction opposite to the first direction.
    [0008]
    8. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that the first and second pistons (82, 84) define a common reciprocity axis that is perpendicular to and separated from a rotation axis (70) of crankshaft (60).
    [0009]
    9. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that the first and second cylindrical portions (66, 68) are arranged eccentrically in relation to the crankshaft (60).
    [0010]
    10. Cutter assembly (110), according to claim 1, CHARACTERIZED by the fact that the first and second pistons (82, 84) are pivotally connected to the respective first and second eccentric rods (78, 80).
    [0011]
    11. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that each of the first ends of the first and second eccentric rods (78, 80) includes: a first gripping portion, and a second movable grip portion in relation to the first grip portion between first and second positions for gripping the respective first and second eccentric cylindrical portions (66, 68).
    [0012]
    12. Cutter assembly (110) according to claim 1, CHARACTERIZED by the fact that it additionally comprises a bearing mounted within each of the first ends of the first and second eccentric rods (78, 80).
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    同族专利:
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    法律状态:
    2017-07-25| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-02-27| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-05-05| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-07-14| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/12/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    2020-11-10| B16C| Correction of notification of the grant [chapter 16.3 patent gazette]|Free format text: REF. RPI 2584 DE 14/07/2020 QUANTO AO ENDERECO. |
    优先权:
    申请号 | 申请日 | 专利标题
    US14107397|2013-12-16|
    US14/107,397|US10721862B2|2013-12-16|2013-12-16|Cutter assembly for an agricultural harvester|
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