CN108934413B - A chopper subassembly and combine for combine - Google Patents

A chopper subassembly and combine for combine Download PDF

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Publication number
CN108934413B
CN108934413B CN201710357040.5A CN201710357040A CN108934413B CN 108934413 B CN108934413 B CN 108934413B CN 201710357040 A CN201710357040 A CN 201710357040A CN 108934413 B CN108934413 B CN 108934413B
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China
Prior art keywords
chopper
plate
roller
assembly
axis
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CN108934413A (en
Inventor
付宝松
李军榜
王国强
林政伟
肖西蒙
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John Deere Tianjin Co Ltd
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John Deere Tianjin Co Ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D43/00—Mowers combined with apparatus performing additional operations while mowing
    • A01D43/06—Mowers combined with apparatus performing additional operations while mowing with means for collecting, gathering or loading mown material
    • A01D43/077—Mowers combined with apparatus performing additional operations while mowing with means for collecting, gathering or loading mown material with auxiliary means, e.g. fans, for transporting the mown crop
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D43/00—Mowers combined with apparatus performing additional operations while mowing
    • A01D43/08—Mowers combined with apparatus performing additional operations while mowing with means for cutting up the mown crop, e.g. forage harvesters

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Outside Dividers And Delivering Mechanisms For Harvesters (AREA)

Abstract

The invention discloses a chopper assembly for a combine harvester and the combine harvester, wherein the chopper assembly comprises: a straw discharging roller rotatable about a first axis, the straw discharging roller receiving crop stalks threshed by the combine and throwing the crop stalks rearward of the harvester; a chopper, the chopper comprising: a left side wall and a right side wall, a shredder roller disposed between the left side wall and the right side wall, and a plurality of shredding blades disposed on the shredder roller; the chopper roller is rotatable about a second axis parallel to and rearwardly below the first axis; an upper receiving plate capable of guiding at least a portion of the crop stalks thrown by the grass discharge roller to the chopper to be cut by the chopping blade. The chopper assembly for the combine harvester and the combine harvester have more uniform material throwing.

Description

A chopper subassembly and combine for combine
Technical Field
The invention relates to the field of agricultural machinery, in particular to a chopper assembly for a combine harvester and the combine harvester.
Background
Currently, under the requirements of national policy and regulation, combine harvesters should be equipped with stalk choppers to meet the requirement of returning stalks to the field. Typically, a stalk chopper is located behind a threshing unit of the combine harvester and receives and chops threshed crop stalks.
Existing stalk shredders, after shredding crop stalks, may choose to either directly shred the crop stalks before being thrown into the field or push them to a rear spreader depending on the type of crop stalk.
Disclosure of Invention
In the using process, the existing combine harvester is poor in the scattering uniformity degree, and poor in crop stem crushing degree; through years of research, the inventor finds that the existing chopper is directly arranged behind the separating roller and is used for simultaneously chopping materials (crop stalks) and pushing the materials backwards. Due to the structural limitation of the chopper, the distance for throwing the materials backwards is limited, so that the retention time of the materials in the air is short, the corresponding landing range of the materials is limited, and the uniform throwing degree of the stalks is poor.
Simultaneously, because the transmission structure itself and the restriction of installation space of current chopper can't set up and can provide high rotational speed acceleration mechanism by the chopper, lead to the rotational speed of chopper lower, cause the not ideal enough of stalk crushing degree.
In view of the above-mentioned shortcomings, it is desirable to provide a shredder assembly for a combine harvester and a combine harvester to solve at least one of the above problems.
The shredder assembly of the present invention comprises: a straw discharging roller rotatable about a first axis, the straw discharging roller receiving crop stalks threshed by the combine and throwing the crop stalks rearward of the harvester;
a chopper, the chopper comprising: a left side wall and a right side wall, a shredder roller disposed between the left side wall and the right side wall, and a plurality of shredding blades disposed on the shredder roller; the chopper roller is rotatable about a second axis parallel to and rearwardly below the first axis;
an upper receiving plate capable of guiding at least a portion of the crop stalks thrown by the grass discharge roller to the chopper to be cut by the chopping blade.
In a preferred embodiment, the upper material receiving plate has a front side edge, a rear side edge, and a left side edge and a right side edge, wherein the front side edge is parallel to and above the first axis.
As a preferred embodiment, the horizontal distance of the front side edge from the first axis is smaller than or equal to the diameter of the grass-discharging roller.
As a preferred embodiment, the vertical distance of the front side edge from the first axis is greater than or equal to the radius of the grass-discharging roller.
As a preferred embodiment, the upper material receiving plate comprises a front side part, a middle part and a rear side part; the front side part and the rear side part are of flat plate structures, and the middle part is of a bent plate structure.
In a preferred embodiment, the rear side edge is parallel to and above and forward of the second axis.
In a preferred embodiment, the rear side edge has a horizontal distance from the second axis which is greater than or equal to one third of the radius of the chopper, and the rear side edge has a vertical distance from the second axis which is greater than or equal to the radius of the chopper.
As a preferred embodiment, the method further comprises:
connect the flitch down, connect the flitch can accept to come from the crop stem stalk of arranging the grass roller, and will the crop stem stalk guides to the chopper.
As a preferred embodiment, the lower material receiving plate has a front end curled to be at least partially cylindrical, and a main body portion located behind the front end; the main body part is of a flat plate structure; the axis of the at least partial cylinder is parallel to and above and forward of the second axis.
As a preferred embodiment, the at least partial cylinder has a radius of at least 10 mm.
As a preferred embodiment, the at least partial cylinder has a radius of at least 20 mm.
In a preferred embodiment, the main body part is inclined with respect to a horizontal plane, and an included angle between the main body part and the horizontal plane is greater than or equal to 20 degrees.
As a preferred embodiment, the horizontal distance of the axis of the at least partial cylinder from the second axis is greater than the radius of the chopper.
As a preferred embodiment, the vertical distance of the axis of the at least part of the cylinder from the second axis is smaller than the diameter of the shredder.
In a preferred embodiment, the distance between the axis of the at least partial cylinder and the rear end of the upper material receiving plate is greater than or equal to the radius of the chopper.
As a preferred embodiment, a grass roller concave plate is arranged below the grass roller, and the grass roller concave plate has a grid structure to allow the crop seeds to fall.
As a preferred embodiment, a conveying belt is further arranged between the concave plate of the grass discharging roller and the lower material receiving plate; the conveyor belt can convey part of the crop stalks thrown out by the grass discharging roller to the chopper through rotation.
As a preferred embodiment, a concave plate extension plate connected with the rear end of the concave plate of the grass discharging roller is further arranged; the deck extension panel has a leading edge and a trailing edge, and the trailing edge is located above and behind the leading edge; the concave plate extension plate has a smooth upper surface, and the angle between the upper surface and the horizontal plane is 10-20 degrees.
In a preferred embodiment, the rear edge of the concave extension plate is parallel to the first axis and the horizontal distance between the rear edge and the first axis is larger than the radius of the grass discharging roller.
In a preferred embodiment, the rear edge of the concave extension plate is at a horizontal distance from the first axis that is greater than the diameter of the weed-discharging roller.
As a preferred embodiment, the shredding blade is rotatably mounted on the shredder roller.
As a preferred embodiment, the shredder further comprises a fixed cutter bar disposed in front of and below the shredder roller, the length direction of the fixed cutter bar being parallel to the second axis, and a plurality of fixed cutter blades being disposed on the fixed cutter bar at equal intervals; when the chopper roller is driven to rotate, the chopper roller drives the chopper blade to rotate through the gap between the stationary cutter blades.
As a preferred embodiment, the chopper assembly further includes a fixed knife bar adjusting device, which includes a rotating shaft and a mounting frame, and the fixed knife bar is mounted on the mounting frame and can rotate around the rotating shaft under the driving of the mounting frame, so as to adjust the relative position between the fixed knife bar and the second axis.
In a preferred embodiment, the shredder further comprises an upper cover plate, the upper cover plate is located between the left side wall and the right side wall, and the front end of the upper cover plate is connected with the upper receiving plate.
In a preferred embodiment, the upper cover plate is formed with first projections projecting toward the chopper roller, the first projections extending in a direction parallel to the second axis.
In a preferred embodiment, the shredder further comprises a lower cover plate which is located between the left and right side walls and a front end of which is connected to the lower material plate.
In a preferred embodiment, the lower cover plate is formed with second projections projecting toward the chopper roller, the second projections extending in a direction parallel to the second axis.
As a preferred embodiment, the chopper assembly further includes a slinger located behind the chopper, the slinger having a left side plate, a right side plate, and an upper guide plate connecting the left and right side plates, the upper guide plate having a plurality of guide vanes mounted thereon for guiding chopped crop stalks to be thrown rearwardly.
As a preferred embodiment, a left connecting plate having a first long hole is fixedly installed at the rear end of the left sidewall of the shredder;
a left side plate of the spreader is provided with a left pin shaft which is inserted into the first long hole; the left side wall is rotatably provided with a left limiting piece, the left limiting piece is provided with a first notch, and the first notch is used for accommodating the left pin shaft;
the rear end of the right side wall of the chopper is fixedly provided with a right connecting plate, and the right connecting plate is provided with a second long hole;
the right side plate of the spreader is provided with a right pin shaft which is coaxially arranged with the left pin shaft, and the right pin shaft is inserted into the second long hole; the right side wall is rotatably provided with a right limiting part, the right limiting part is provided with a second notch, and the second notch is used for accommodating the right pin shaft.
As a preferred embodiment, a spreader position adjusting structure is further provided, the spreader position adjusting structure including,
long grooves respectively arranged on the left side plate and the right side plate of the spreader;
adjusting bolts respectively arranged on the left side wall and the right side wall of the chopper; and
the adjusting nut is matched with the adjusting bolt; the adjusting bolt is received in the elongated slot and guides the spreader to rotate about the left and right pins.
A combine harvester, wherein the combine harvester comprises:
a walking assembly for walking the combine harvester;
a harvesting assembly for harvesting a crop;
a conveying assembly for conveying the harvested crop backward;
a threshing and cleaning assembly for receiving the crop from the conveying assembly and performing a threshing and cleaning process; and
the shredder assembly according to any of the preceding embodiments.
As a preferred embodiment, the threshing and cleaning assembly includes a tailscreen, the rear end of which is located horizontally between the first and second axes.
In a preferred embodiment, the front end of the lower feed plate of the shredder assembly extends below the tailscreen and is adjacent to the lower surface of the tailscreen.
In a preferred embodiment, the rear end of the tail screen is spaced from the front end of the lower material plate of the shredder assembly by a distance greater than 200mm in the horizontal direction.
In a preferred embodiment, the rear end of the tail screen is higher than the front end of the lower material plate of the shredder assembly.
In a preferred embodiment, the tail screen extends obliquely from the front lower side to the rear upper side, and the extension line of the tail screen is higher than the front end of the lower material plate of the shredder assembly.
In a preferred embodiment, the combine has a left body side wall to which the left side wall of the shredder is mounted by a first chute bracket and a right body side wall to which the right side wall is mounted by a second chute bracket to allow the shredder to slide.
In a preferred embodiment, the second chute bracket is arranged in bilateral symmetry with the first chute bracket; and the number of the first and second electrodes,
the first runner bracket includes:
a left body side bracket mounted on the left body side wall;
a left chopper side bracket mounted on the chopper left side wall;
the second chute bracket comprises:
a right body side bracket mounted on the right body side wall;
a right chopper side bracket mounted on the chopper right side wall.
As a preferred embodiment, the left body side bracket has a first bent portion bent toward one side of the body, the left shredder side bracket has a second bent portion bent toward the other side of the body, and the second bent portion is located above and supported by the first bent portion when the shredder is in the mounted position;
the right side machine body side bracket is provided with a third bending part bending towards one side of the machine body, the right side chopper side bracket is provided with a fourth bending part bending towards the other side of the machine body, and when the chopper is positioned at the installation position, the fourth bending part is positioned above the third bending part and supported by the third bending part.
As a preferred embodiment, the first bent part and the second bent part respectively have a plurality of bolt holes to allow bolts to pass through and be fixed;
the third bent part and the fourth bent part are respectively provided with a plurality of bolt holes so as to allow bolts to pass through and be fixed.
In a preferred embodiment, the combine harvester comprises a first pulley coaxially mounted with the grass discharging roller for driving the grass discharging roller to rotate.
As a preferred embodiment, a second pulley is further included, mounted coaxially with the chopper roller, for driving the chopper roller in rotation.
In a preferred embodiment, the diameter of the first pulley is larger than the diameter of the second pulley, and the first pulley drives the second pulley via a belt.
The crop stalks enter the chopper through the arrangement of the grass discharge roller separated from the chopper, and meanwhile, the crop stalks are thrown backwards through the grass discharge roller and then are thrown and returned to the field or conveyed to the rear throwing device after being chopped by the chopper.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of a part of a combine harvester according to an embodiment of the invention;
FIG. 2 is a schematic view of the shredder assembly of FIG. 1;
FIG. 3 is a schematic view of the shredder and spreader arrangement of FIG. 2;
FIG. 4 is a schematic view of the shredder of FIG. 1;
FIG. 5 is a schematic view of the shredder of FIG. 1 mounted thereon;
fig. 6 is a schematic view of the first runner bracket structure of fig. 5.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the present invention, a typical combine harvester has a traveling assembly for traveling the combine harvester, a harvesting assembly located at a front portion of the combine harvester for harvesting crops, a conveying assembly for conveying the harvested crops backward, a threshing and cleaning assembly for receiving the crops conveyed from the conveying assembly and performing a threshing and cleaning process, and a shredder assembly for shredding the threshed crop stalks. The shredder assembly of the present invention may be used on a combine harvester as described above.
It will be appreciated that the combine has a definite direction of travel and accordingly, as used herein, "front", "rear", "forward" and "rearward" are defined in terms of the direction of travel of the combine or the forward or rearward direction of a person standing in a position (such as in a cab) of the combine and oriented in the direction of travel of the combine. Meanwhile, "left", "right", "left" and "right" used in the present invention are also defined in terms of the left-right direction when a person is located at a position (e.g., in a cab) of the combine and stands toward the forward direction of the combine. In addition, the traveling direction of the combine in the reverse or reverse condition is opposite to the above-described forward direction, and the height relationship described in the present invention is derived with reference to the vertical direction (or gravity direction, plumb direction).
Referring to fig. 1 to 6, one embodiment of the present invention provides a shredder assembly for a combine harvester, including: a weed discharge roller 200, said weed discharge roller 200 being rotatable about a first axis, said weed discharge roller 200 receiving crop stalks threshed by the combine and throwing said crop stalks rearwardly of the harvester; a chopper 300, said chopper 300 comprising: a left side wall 320 and a right side wall, a shredder roller 301 disposed between the left side wall 320 and the right side wall (not shown), and a plurality of shredding blades 301 disposed on the shredder roller 301; the chopper roller 301 is rotatable about a second axis parallel to and rearwardly below the first axis; an upper receiving plate 400, the upper receiving plate 400 being capable of guiding at least a portion of the crop stalks thrown by the grass discharge roller 200 to the shredder 300 to be cut by the shredding blade 301.
When the chopper component is used, the chopper component can be arranged behind a threshing component of the combine harvester so as to receive the threshed crop stalks. When the combine harvester works, crop stalks after threshing are conveyed to the chopper assembly, the straw discharge roller 200 throws out the crop stalks, the crop stalks are thrown out and then enter the chopper 300 to be crushed, and then the chopper 300 throws the crushed crop stalks back to the field or conveys the crushed crop stalks to the rear thrower 500.
The chopper assembly in this embodiment is provided with the grass discharge roller 200 separated from the chopper 300, and meanwhile, the grass discharge roller 200 enables crop stalks to enter the chopper 300 by being thrown backwards, and then the crop stalks are thrown back to the field or conveyed to the rear spreader 500 after being chopped by the chopper 300.
In the present embodiment, the grass discharging roller 200 discharges the material backward, wherein a portion of the material may directly enter the shredder 300 without being guided by the upper receiving plate 400, and a portion of the material may contact or impact the upper receiving plate 400 and thus enter the shredder 300 under the guidance of the upper receiving plate 400, and the portion of the material may not enter the shredder 300 due to being discharged too far without the upper receiving plate 400.
As shown in fig. 1-3, the upper catcher plate 400 has a front edge 401, a rear edge 402, a left edge (not shown), and a right edge (not shown). Wherein the front edge 401, the rear edge 402, the left edge and the right edge form the overall contour of the upper catcher plate 400.
To facilitate more material being discharged by the grass-discharging roller 200 into the shredder 300, the leading edge 401 is parallel to and above the first axis. The front edge 401 is parallel to the first axis, so that the front edge 401 is a linear edge, so that the installation can be easily performed, and the installation difficulty is reduced. In the present embodiment, the front edge 401 of the upper receiving plate 400 may be located at the front upper part, the right upper part, or the rear upper part as shown in fig. 1 of the first axis, and in the present embodiment, it is only necessary that the front edge 401 of the upper receiving plate 400 is higher than the grass discharging roller 200 in the vertical height. Of course, it is preferred that the leading edge 401 of the upper catcher plate 400 be located rearwardly and upwardly of the first axis.
In a particular example, the horizontal distance (which may also be referred to as the horizontal distance) of the leading edge 401 from the first axis is less than or equal to the diameter of the grass roller 200. The grass discharging roller 200 may include a cylindrical body and grass discharging teeth disposed on the cylindrical body, the grass discharging teeth having a tooth-like configuration and being uniformly distributed on the cylindrical body along a circumferential direction and a first axis. Further, the grass discharging roller 200 may also be configured to include a cylindrical main body and grass discharging plates provided on the cylindrical main body, the grass discharging plates being of a plate-like configuration extending in the first axial direction and having substantially the same length as the cylinder, and the grass discharging plates being evenly distributed in the circumferential direction of the cylindrical main body. Of course, the weed discharge roller may also be of other designs that can stir and throw the crop stalks rearward as would be readily understood by one of ordinary skill in the art. The first axis is also the circular axis of the cylindrical body. The diameter of the grass discharge roller 200 is the radial distance between the first axis and the outer edge of the grass discharge teeth or the outer edge of the grass discharge plate (the outer edge of the grass discharge teeth can also be called as the tooth crest and the tooth tip; the outer edge of the grass discharge teeth is opposite to the outer edge of the grass discharge teeth, the roots of the grass discharge teeth are connected with the cylinder main body through the roots). As shown in FIG. 2, the leading edge 401 is at a horizontal distance L1 from the first axis, and the grass roller 200 has a radius R1 and a diameter D1; in this example, L1 ≦ D1 ═ 2R 1.
With continued reference to fig. 2, in this example, the vertical distance (also referred to as the vertical distance) of the leading edge 401 from the first axis is greater than or equal to the radius of the weed extractor roller 200. The vertical distance between the front edge 401 and the first axis (which can also be understood as the distance that the front edge 401 is higher than the first axis) is L2, wherein L2 ≧ R1. The proportional relationship between the distance between the front edge 401 of the upper receiving plate 400 and the first axis of the grass discharging roller 200 is obtained by long time and large amount of experiments, and the upper receiving plate 400 arranged in the proportional relationship has better guiding and receiving effects.
In this embodiment, the rear edge 402 is parallel to and above the second axis in order to facilitate the material guided by the upper material receiving plate 400 to enter the shredder 300 and avoid the material from reaching the shredder 300 but not entering. Wherein the rear edge 402 is parallel to the second axis such that the rear edge 402 is a straight edge, which allows for easier attachment of the shredder 300 and reduces installation difficulties. In the present embodiment, the rear edge 402 of the upper receiving plate 400 may be located at the rear upper part, right below, or front upper part as shown in fig. 1, and in the present embodiment, it is only necessary that the front edge 401 of the upper receiving plate 400 is higher than the grass discharging roller 200 in the vertical height. Of course, the rear edge 402 of the upper catcher plate 400 is preferably located forward and upward of the second axis.
In a particular example, the horizontal distance of the back side edge 402 from the second axis is greater than or equal to one third of the radius of the shredder 300 and the vertical distance of the back side edge 402 from the second axis is greater than or equal to the radius of the shredder 300. Bearing in mind the above description, the shredder 300 includes a shredder roller 301 and a plurality of shredding blades 302 disposed on the shredder roller 301. The radius of the shredder 300 is a distance between the second axis and the outer edge of the shredding blade 302 in the working state (the outer edge of the shredding blade 302 can refer to the description of the outer edge of the grass discharge teeth, which is not described herein again) in the radial direction. As shown in FIG. 2, with the horizontal distance of the rear edge 402 from the second axis being L3 and the vertical distance of the rear edge 402 from the second axis being L4, the radius of the shredder 300 is R2 and the diameter is D2, in this example, L3 ≧ 1/3R 2 and L4 ≧ R2.
In the present embodiment, the second axis is located behind and below the first axis, and accordingly, the chopper roller 301 is also located behind and below the grass discharge roller 200, which allows the upper receiving plate 400 to have a bent or curved structure to guide the material thrown by the grass discharge roller 200 into the chopper 300. The upper material receiving plate 400 may be formed by splicing a plurality of plates, or may be formed by bending a single plate. Preferably, the upper material receiving plate 400 is integrally formed by bending.
To facilitate the installation and fixation of the upper receiver plate 400 and to adapt the projection trajectory of the material in order to better direct the material to the front of the shredder 300, as shown in fig. 3, the upper receiver plate 400 may include a front portion 403, a middle portion 404, and a rear portion 405. The front side portion 403 and the rear side portion 405 are flat plate structures, and the middle portion 404 is a bent plate structure. The front edge 401 is located in the front portion 403 and the back edge 402 is located in the back portion 405.
Where the front portion 403 and the back portion 405 of the flat structure are parallel to a plane, suitable properties are as follows: as shown in fig. 2, the front side portion 403 is parallel to a horizontal plane and the rear side portion 405 is parallel to an inclined plane. The contour of the middle portion 404 of the bent plate structure in the view of fig. 2 is a circular arc, or other smooth transition curve. Under the smooth transition of the middle portion 404, the front portion 403 smoothly transitions to the rear portion 405, thereby facilitating the guidance of the material.
Of course, the upper receiving plate 400 in this embodiment does not exclude the non-round transition bending example, for example, in an embodiment, the upper receiving plate 400 only has the front portion 403 and the rear portion 405, and the front portion 403 and the rear portion 405 are transitioned by a corner (preferably an obtuse angle).
The upper material receiving plate 400 having the front portion 403, the intermediate portion 404, and the rear portion 405 is not limited to the upper material receiving plate 400 formed by joining three plates, and the front portion 403, the intermediate portion 404, and the rear portion 405 may be formed by bending a single plate.
In this embodiment, the shredder assembly may also have a lower material receiving plate 600 to facilitate the input of as much material as possible thrown by the grass discharge roller 200 into the shredder 300. The lower stripper plate 600 can receive crop stalks from the grass discharging roller 200 and guide the crop stalks to the shredder 300. The lower material receiving plate 600 is located below the upper material receiving plate 400, and a part of the material drops in front of the chopper 300 after being thrown out and is received by the lower material receiving plate 600, and is guided by the lower material receiving plate 600 to enter the chopper 300.
As shown in fig. 2, the lower feed plate 600 is located substantially in front of the shredder roller 301, and the lower feed plate 600 is placed obliquely (with respect to the vertical direction) as a whole. The underground receiving plate 600 is arranged to guide the material to enter the chopper 300 and also can shield the front part (lower part) of the chopper 300, so that the chopper 300 is prevented from beating the material out of the chopper 300 in the process of chopping the material. Wherein the rear end to the front end 601 (which may also be referred to as an upper end, a tip end) of the lower feed plate 600 gradually gets away from the shredder roller 301. As can also be seen from fig. 2, the rear end of the lower feed plate 600 is close to the shredder roller 301 in the horizontal direction, and the front end 601 is distant from the shredder roller 301.
Wherein, after the crop stalks are received by the front end 601 of the lower material receiving plate 600, if the accumulation of the material occurs, the space between the front end 601 and the lower material receiving plate 600 is gradually reduced, and the reduction of the space causes the amount of the crop stalks entering the shredder 300 to be reduced, thereby affecting the shredding effect of the crop stalks, and based on this point, the lower material receiving plate 600 has an upper end curled into at least a partial cylindrical shape and a main body portion located behind the upper end in the present embodiment. The body portion 602 is a flat plate structure; the axis of the cylinder is parallel to and above and forward of the second axis.
The front end 601 of the lower material receiving plate 600 is at least partially cylindrical, and the at least partial cylinder (the part indicated by the reference numeral 601) may be a cylinder with an open side wall, and accordingly, the contour line of the cross section of the at least partial cylinder is at least a partial circular arc. The axis of the cylinder is located on the side away from the shredder 300 so that when crop stalks fall onto the front end 601, they can follow the arcuate surface of the at least partially cylindrical front end 601 into the plane (upper surface) of the main body portion 602 and enter the shredder 300 under the guidance of the main body portion 602, thereby avoiding the build-up of material on the lower receiver plate 600.
In the present embodiment, there is no limitation on the central angle corresponding to at least a part of the cylinder (outline of the cross section) of the front end 601, and the central angle may be larger than 180 degrees as shown in fig. 2, in which case, the front end 601 is in a shape of a half cylinder; the central angle may be less than 180 degrees, and the tip 601 may have a circular arc plate shape.
The at least part of the cylinder has a radius of at least 10 mm for a better prevention of material accumulation. Further, the at least partial cylinder has a radius of at least 20 mm. So set up, can be better with material water conservancy diversion to shredder 300. In particular, the horizontal distance of the axis of the at least partial cylinder from the second axis is greater than the radius of the shredder 300. As shown in fig. 2, the horizontal distance between the axis of the at least partial cylinder and the second axis is L5, i.e. L5 > R2.
With continued reference to fig. 2, to ensure that the front end of the upper material receiving plate 400 is too high to affect the feeding of the shredder 300, the vertical distance between the axis of the at least part of the cylinder and the second axis is less than the diameter of the shredder 300. With the vertical distance of the axis of the at least part-cylinder from the second axis being L6, i.e. L6 < D2-2R 2. Also to ensure that the chopper 300 has a preferably sized feed opening, the axis of the at least part of the cylinder is at a distance from the rear end of the upper catcher plate 400 that is greater than or equal to the radius of the chopper 300. The distance between the axis of at least part of the cylinder and the rear end of the upper material receiving plate 400 is L7, namely L7 is more than or equal to R2.
In the present embodiment, the main body portion 602 is disposed rearward of the front end 601. The main body portion 602 is a flat plate (also referred to as a flat plate) structure, and accordingly, the main body portion 602 is parallel to a certain inclined plane. The material flowing down from the front end 601 of the lower material plate 600 flows down to the main body 602 depending on the structure of the front end 601, and the main body 602 may be inclined with respect to the horizontal plane in order to facilitate the material entering the shredder 300. Specifically, the included angle between the main body portion 602 and the horizontal plane is greater than or equal to 20 degrees.
It should be noted that the lower material receiving plate 600 may be formed by bending a whole plate, or may be formed by splicing a plurality of plates, for example, the front end 601 is a bent plate, the main body 602 is a flat plate, and the bent plate and the flat plate are welded to form the lower material receiving plate 600. Of course, in the present embodiment, it is preferable that the lower material receiving plate 600 is formed integrally.
In the present embodiment, a grass discharging roller concave plate 201 is arranged below the grass discharging roller 200, and the grass discharging roller concave plate 201 has a grid structure to allow the crop seeds to fall down. Wherein, the grass discharging roller 200 is matched with the grass discharging roller concave plate 201 to throw out crop stalks. The grass discharging roller concave plate 201 is of a grid structure, and a large number of grid holes are distributed on the grid structure. If a part of grains are mixed in the crop stem when the crop stem enters between the grass discharging roller concave plate 201 and the grass discharging roller 200, the grains can pass through the grid holes to enter a grain cleaning assembly of the combine harvester, so that the part of grains can be collected, and waste is avoided.
In a possible embodiment, the chopper 300 is spaced from the grass discharging roller 200 by a certain distance, and in order to prevent a part of the material from falling into the gap between the chopper 300 and the grass discharging roller and further to prevent the material from being crushed and affecting the material chopping effect, a conveying belt (not shown) can be arranged between the grass discharging roller concave plate 201 and the lower material receiving plate 600; the conveyor belt can convey the crop stalks, which are partially thrown out by the grass discharge roller 200, to the chopper 300 by rotating. The number of the conveyor belts may be plural or one, and the present embodiment is not particularly limited.
With continued reference to the embodiment of fig. 1-6, to provide more even distribution and more efficient material delivery, the shredder assembly is further provided with a concave extension plate 202 connected to the rear end of the concave plate 201 of the grass discharge roller. The deck extension 202 has a front edge and a rear edge, and the rear edge is located above and behind the front edge. The recessed plate extension 202 has a smooth upper surface, and the angle between the upper surface and the horizontal plane is 10 to 20 degrees. It can be seen that the concave extension plate 202 is angled upward and provides a slide for the movement of crop stalks. Under the push of the grass discharging roller 200 (counterclockwise rotation when the reader faces fig. 1), the crop stalks are thrown in an overhead state, so that a longer throw distance is provided, and at the same time, the smooth upper surface is more favorable for the movement of the crop stalks, reducing the resistance in the movement of the crop stalks.
In this embodiment, the rear edge of the recess plate extension plate 202 is parallel to the first axis. Through a plurality of experiments, the concave extension plate 202 has better throwing effect when the horizontal distance L8 between the rear edge and the first axis is larger than the radius of the grass discharging roller 200. Further, the horizontal distance L8 from the first axis of the rear edge of the deck extension 202 is greater than the diameter of the weed extractor roller 200.
In the present embodiment, the shredding blade 302 may be fixedly mounted to the shredder roller 301, for example, by welding, screwing, riveting, or the like. To avoid the shredding blades 302 from being damaged by hard objects encountered during the shredding operation, the shredding blades 302 are rotatably mounted on the shredder roller 301, thereby having a longer life than stationary shredding blades 302. At this point, the shredding blade 302 may be spread apart by centrifugal force as it rotates, thereby creating a cut into the material. If the shredding blade 302 encounters hard objects during the material shredding operation, the shredding blade 302 may be adaptively rotated to avoid the hard objects from causing a large impact force on the shredding blade 302 to damage the shredding blade 302.
As specifically shown in fig. 3 and 4, the shredder 300 further includes a fixed knife bar 307 disposed in front of and below the shredder roller 301, the fixed knife bar 307 having a length direction parallel to the second axis, and a plurality of fixed knife blades 305 are disposed on the fixed knife bar 307 at equal intervals. When the chopper roller 301 is driven to rotate, the chopper roller 301 rotates the chopper blade 302 through the gap between the stationary-blade blades 305.
The chopper roller 301 rotates in the same direction as the weed-discharging roller 200, and rotates counterclockwise (when the reader faces fig. 3). As the chopper roller 301 rotates, the chopper blade 302 erects in a whipping manner. The chopping blade 302, when passing through the gap between two adjacent stationary blades 305, the tip portion of the chopping blade 302 coincides with the tip portion of the stationary blade 305, chopping the crop stalks.
In this embodiment, a plurality of stationary blade bars 307 are arranged in the longitudinal direction (parallel to the second axis) of the stationary blade bar 305. The fixed blade 305 is fixed to the fixed blade bar 307 and is movable with the fixed blade bar 307. The stationary blade bar 307 is mounted on the left sidewall 320 and the right sidewall, for example, as shown in fig. 2, two ends of the stationary blade bar 307 are respectively disposed on the left sidewall 320 and the right sidewall.
In order to adjust the chopping effect of the crop stalks and adapt to different crop types, the aim can be fulfilled by adjusting the overlapping amount of the chopping blades 302 and the fixed knife blades 305. Specifically, to achieve the adjustment of the amount of overlap of the shredding blade 302 and the fixed-blade blades 305, the shredder assembly may further include a fixed-blade bar 307 adjustment device. The fixed knife bar 307 adjusting device comprises a rotating shaft 306 and a mounting frame 308, wherein the fixed knife bar 307 is mounted on the mounting frame 308 and can rotate around the rotating shaft 306 under the driving of the mounting frame 308, and then the relative position between the fixed knife bar 307 and the second axis is adjusted.
Wherein the rotation axis 306 is parallel to the second axis and parallel to the stationary knife bar 307. The rotating shaft 306 may be installed above, below, in front of, behind, etc. the stationary blade bar 307, and preferably, as shown in fig. 2, the rotating shaft 306 is located above the stationary blade bar 307. The rotating shaft 306 is also fixed to the shredder 300, preferably to the left and right side walls 320, 320. The mounting frame 308 connects the rotating shaft 306 to the same side end of the stationary blade bar 307, and the mounting frame 308 may preferably be a connecting plate in the figure. The fixed cutter bar 307 and the rotating shaft 306 are respectively connected to different positions of the connecting plate in the length direction of the connecting plate, so that the fixed cutter bar 307 can rotate around the rotating shaft 306 by applying force (manually or mechanically) to the mounting frame 308, and the fixed cutter bar 307 is driven to move in a certain arc-shaped area range.
Specifically, the left side wall 320 and the right side wall are provided with arc-shaped track long holes 309 through which the ends of the fixed cutter bar 307 penetrate, and the fixed cutter bar 307 can move along the track long holes 309, so that the position of the fixed cutter blade 305 can be accurately adjusted. The upper end of the mounting frame 308 (connection plate) is connected to the rotation shaft 306, which may be a rotatable connection, i.e., the rotation shaft 306 does not participate in the rotation, and the mounting frame 308 rotates around the rotation shaft 306; the connection may also be a relatively fixed connection, i.e., the mounting frame 308 will drive the rotation shaft 306 to rotate, and at this time, the rotation shaft 306 is rotatably connected to the left sidewall 320 and/or the right sidewall. The other end (lower end) of the mounting frame 308 is a free end, which may be a forced end for receiving a force to be driven in rotation.
As shown in fig. 3, the shredder 300 further has an upper cover plate 303, the upper cover plate 303 is located between the left and right side walls 320 and 320, and the front end of the upper cover plate 303 is connected with the upper receiving plate 400, for example, by riveting, welding or bolting; also, the upper cover plate 303 may be integrally manufactured with the upper catcher 400. The shredder 300 further has a lower cover plate 304, the lower cover plate 304 is located between the left and right sidewalls 320, and a front end 601 of the lower cover plate 304 is connected to the lower flitch plate 600, for example, by riveting, welding or bolting; and the lower cover plate 304 may also be integrally manufactured with the lower feed plate 600.
Wherein the upper cover plate 303, the lower cover plate 304, and the left and right side walls 320, 302 form a housing of the shredder 300, and the shredder roller 301 and the shredding blade 302 are located within the housing. The upper cover plate 303 and the lower cover plate 304 are integrally arc-shaped plates. The distance between the upper and lower cover plates 303, 304 and the second axis is kept constant as a whole in the extending direction of the upper and lower cover plates 303, 304 (or the circumferential direction of the shredder roller 301), rather than changing from one end to the other. The upper cover plate 303 and the lower cover plate 304 with such a structure can enable the materials brought back by the chopper roller 301 to be conveyed according to a preset track, and prevent the chopper 300 from beating the materials out of the chopper 300.
Further, a first projection 3031 protruding toward the shredder roller 301 is formed on the upper cover 303, and the first projection 3031 extends in a direction parallel to the second axis. A second protrusion 3041 protruding toward the shredder roller 301 is formed on the lower cover plate 304, and the second protrusion 3041 extends in a direction parallel to the second axis. By arranging the first protrusions 3031 and the second protrusions 3041, the inner walls of the upper cover plate 303 and the lower cover plate 304 at the positions of the first protrusions 3031 and the second protrusions 3041 are closer to the chopping blades 302, so that crop stalks are better crushed, and grass winding is prevented.
In a preferred embodiment, the chopper assembly may further include a spreader 500 positioned behind the chopper 300 in order to promote uniform spreading of the chopped crop stalks and to meet the spreading requirements of different crop species. This spreader 500 has a left side plate 501, a right side plate, and an upper guide plate connecting the left side plate 501 and the right side plate, on which a plurality of guide blades 502 are installed for guiding chopped crop stalks to be thrown out rearward. Wherein, the direction of arranging of a plurality of guide pieces can be arranged in parallel with the length direction of the second axis.
To facilitate the installation and removal of the spreader 500 and to prevent the spreader 500 from moving to affect the spreading effect when the machine vibrates, a left connecting plate 311 is fixedly installed at the rear end of the left sidewall 320 of the shredder 300, and the left connecting plate 311 has a first long hole (not shown). The left side plate 501 of the spreader 500 has a left pin 503, and the left pin 503 is inserted into the first long hole; the left side wall 320 is rotatably provided with a left stopper 310, and the left stopper 310 has a first recess for accommodating the left pin 503.
A right connecting plate (not shown) having a second long hole is fixedly installed at the rear end of the right sidewall of the shredder 300. The thrown right side plate has a right pin (not shown) coaxially disposed with the left pin 503, and inserted into the second long hole; the right side wall is rotatably provided with a right limiting part, the right limiting part is provided with a second notch, and the second notch is used for accommodating the right pin shaft.
As shown in fig. 3, the left connecting plate 311 and the right connecting plate are rectangular plates (not limited to the shape), and the left connecting plate 311 and the right connecting plate are fixed in position and cannot move (not represent being unmovable) in the mounting position. The left limiting member 310 and the right limiting member are mounted on the outer sides of the left connecting plate 311 and the right connecting plate, and can rotate around a pivot shaft (the pivot shaft is parallel to the second axis and passes through the left connecting plate 311 and the right connecting plate).
The left limiting member 310 and the right limiting member are rectangular plates as a whole, one end of each rectangular plate is connected with the pivot shaft, and the other end of each rectangular plate is provided with a first notch (not marked) and a second notch. The first and second recesses are rectangular (or square) and are disposed at the corner positions of the ends of the left and right position-limiting members 310 and 310.
The left connecting plate 311 and the right connecting plate are provided with a first long hole and a second long hole. The left pin 503 and the right pin are fixed to the left side plate 501 and the right side plate, respectively, and penetrate through the first long hole and the second long hole from inside to outside. The left limiting member 310 and the right limiting member rotate clockwise (when the reader faces fig. 3) and the left pin 503 and the right pin are respectively clamped into the first notch and the second notch, so that the left pin 503 and the right pin are fixed on the first long hole and the second long hole, and the installation of the spreader 500 is completed.
In order to facilitate the adjustment of the position of the spreader 500, save the labor intensity of the adjustment of the spreader 500, adapt to the spreading of different conditions and different kinds of crops, and ensure a good spreading effect, the chopper assembly is further provided with a spreader position adjustment structure, and the spreader position adjustment structure comprises: long grooves 505 respectively provided on the left and right side plates 501 and 500 of the spreader; adjusting bolts 504 respectively provided on the left and right side walls 320 and 300; and an adjusting nut that mates with adjusting bolt 504; the adjusting bolt 504 is received in the elongated slot 505 and guides the spreader 500 to rotate around the left pin 503 and the right pin.
In this embodiment, the left side plate 501 and the right side plate can be respectively clamped and fixed on the left side wall 320 and the right side wall by screwing the adjusting bolt 504 and the adjusting nut, and the position of the spreader 500 is fixed under the combined action of the left pin 503 and the right pin at the fixed positions. When the position of the spreader 500 needs to be adjusted, the left side plate 501 and the right side plate can be adjusted and rotate around the left pin 503 and the right pin by rotating the adjusting bolt 504 or the adjusting nut, so that the inclination angle of the spreader 500 relative to the ground is changed, and the spreading distance of the spreader 500 is changed. The position (or depth) of adjusting bolt 504 within slot 505 changes as spreader 500 rotates about left pin 503 and right pin. When the spreader 500 is adjusted to the proper position, the position of the spreader 500 is fixed by tightening the adjusting bolt 504 and the adjusting nut.
With continued reference to fig. 1-6, in another embodiment of the present invention, there is provided a combine harvester, including: a walking assembly for walking the combine harvester; a harvesting assembly for harvesting a crop; a conveying assembly for conveying the harvested crop backward; a threshing and cleaning assembly 100 for receiving the crop conveyed from the conveyor assembly and performing a threshing and cleaning process; and a shredder assembly as in any one of the above embodiments.
In this embodiment, the threshing and cleaning section includes a tail screen 101. The rear end of the tail screen 101 is located between the first axis and the second axis in the horizontal direction. Wherein, the tail sieve 101 is lifted from the front end to the rear end, which can separate the kernel from the bran shell and other impurities.
In an embodiment, not shown, the chopper 300 is spaced from the tail screen 101 by a certain distance, and in order to prevent a part of the material from falling between the gap between the chopper 300 and the tail screen 101 and further failing to be crushed, the front end 601 of the lower material plate 600 of the chopper assembly extends to the lower side of the tail screen 101 and is close to the lower surface of the tail screen 101.
In this embodiment, the front end 601 of the lower material receiving plate 600 may be located below any position of the tail screen 101, and it may be located adjacent to the rear end of the tail screen 101 (i.e. below the rear end of the tail screen 101), below the middle position of the tail screen 101, below the front end 601 of the tail screen 101, or below other positions of the tail screen 101, etc., and in this embodiment, it is only necessary that the front end 601 of the lower material receiving plate 600 is located below the tail screen 101.
In the embodiment shown in fig. 3, the shredder 300 may be located not only behind the weed extractor roller 200, but also behind the tail screen 101. Because the grass discharging roller 200 is only used for throwing the crop stalks out, the throwing distance of the crop stalks is longer, and in order to ensure the throwing distance of the crop stalks and improve the uniform throwing of the materials, the distance L9 between the rear end of the tail sieve 101 and the front end 601 of the lower material receiving plate 600 in the horizontal direction is greater than 200 mm. So set up not only can guarantee that throwing of crop stem stalk is sent the distance longer, simultaneously, the tail sieve 101 with connect down can leave sufficient maintenance and overhaul space between the flitch 600 to make things convenient for operating personnel to thresh cleaning component 100, arrange the maintenance of mechanisms such as grass roller 200 and overhaul.
Further, the rear end of the tail screen 101 is higher than the front end 601 of the lower feed plate 600. Or, the tail screen 101 extends obliquely from the front lower side to the rear upper side, and an extension line of the tail screen 101 is higher than the front end 601 of the lower material receiving plate 600.
In the present embodiment, in order to facilitate the installation of the shredder 300 and the adjustment of the position of the shredder 300, the combine harvester has a left body side wall to which the left side wall 320 of the shredder 300 is mounted by a first chute bracket and a right body side wall to which the right side wall is mounted by a second chute bracket to allow the shredder 300 to slide.
As shown in fig. 5 and 6, the height of the shredder 300 gradually increases as it slides from front to back, i.e., the shredder 300 can slide from front to bottom to back and up. In order to facilitate the sliding of the chopper 300, the sliding path of the chopper 300 may be a straight line (an oblique line having an elevation angle with the horizontal plane), and the distance between the chopper 300 and the grass discharge roller 200 may be adjusted to suit the throwing distance of crop stalks by sliding the chopper 300, and at the same time, the distance between the chopper 300 and the tail screen 101 may be adjusted to adjust the space for maintenance and repair.
Specifically, the second chute bracket and the first chute bracket are provided bilaterally symmetrically, and the first chute bracket includes: a left body side bracket 10, the left body side bracket 10 being mounted on the left body side wall; a left chopper side bracket 312, the left chopper side bracket 312 being mounted on a left side wall 320 of the chopper 300. The second chute bracket comprises: a right body side bracket mounted on the right body side wall; a right chopper 300 side bracket, said right chopper 300 side bracket being mounted on said chopper 300 right side wall.
Further, the left body side bracket 10 has a first bent portion 11 bent toward one side of the body, and the left shredder side bracket 312 has a second bent portion 3121 bent toward the other side of the body, and when the shredder 300 is in the mounted position, the second bent portion 3121 is located above the first bent portion 11 and supported by the second bent portion 3121.
The right body side bracket has a third bent portion bent toward one side of the body, the right shredder 300 side bracket has a fourth bent portion bent toward the other side of the body, and when the shredder 300 is mounted, the fourth bent portion is located above the third bent portion and supported by the third bent portion.
As shown in FIG. 6, the left body bracket, the right body bracket, the left shredder side bracket 312, and the right shredder 300 side bracket are all "L" shaped structures, preferably formed by bending. The main portion 602 of the left body bracket is substantially perpendicular to the first bending portion 11, and the main portion 602 is parallel to and fixedly connected with the left body sidewall.
As shown in fig. 6, the left body bracket is bolted to the left body side wall. For 15 intensity of additional strengthening, left side engine body lateral wall is provided with additional strengthening 15 with left side engine body bracket hookup location, and the upper and lower both ends of this additional strengthening 15 weld on the inner wall of left side engine body lateral wall, and left side engine body bracket passes through bolted connection left side engine body lateral wall and additional strengthening 15. The connection mode of the right body bracket and the right body side wall can refer to the connection mode of the left body bracket and the left body side wall, and the connection modes are not repeated one by one.
The first bending part 11 and the second bending part 3121 are detachably connected to each other, and the third bending part and the fourth bending part are detachably connected to each other, so that the shredder 300 can slide by detaching the connection between the first bending part 11 and the second bending part 3121 and the connection between the third bending part and the fourth bending part when the position of the shredder 300 needs to be adjusted. Specifically, the first bent portion 11 and the second bent portion 3121 respectively have a plurality of bolt holes to allow bolts to pass through for fixing; the third bent part and the fourth bent part are respectively provided with a plurality of bolt holes so as to allow bolts to pass through for fixing.
In one embodiment, the combine harvester may include a first pulley 203 coaxially mounted with the weed discharging roller 200, the first pulley 203 being used to drive the weed discharging roller 200 to rotate. The combine harvester further comprises a second pulley mounted coaxially with the chopper roller 301 for driving the chopper roller 301 in rotation.
The first pulley 203 and the second pulley are located on the same side of the machine body, and the two pulleys can be driven by a belt 450. To facilitate installation of the shredder 300, a tension pulley may be provided between the first pulley 203 and the second pulley. To increase the rotational speed of the chopper roller 301 and improve the crushing effect of the crop stalks, the diameter of the first pulley 203 is greater than the diameter of the second pulley.
It should be noted that the combine harvester of the present embodiment may have any suitable known configuration for the running assembly, harvesting assembly, and other components (e.g., the threshing and cleaning assembly 100). For clearly and briefly explaining the technical solution provided by the present embodiment, the above parts will not be described again, and the drawings in the specification are also simplified accordingly. It should be understood, however, that the present embodiments are not limited in scope thereby.
Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.
Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed subject matter.

Claims (38)

1. A shredder assembly for a combine harvester, wherein the shredder assembly comprises:
a straw discharging roller rotatable about a first axis, the straw discharging roller receiving crop stalks threshed by the combine and throwing the crop stalks rearward of the harvester;
a chopper, the chopper comprising: a left side wall and a right side wall, a shredder roller disposed between the left side wall and the right side wall, and a plurality of shredding blades disposed on the shredder roller; the chopper roller is rotatable about a second axis parallel to and rearwardly below the first axis;
an upper receiving plate capable of guiding at least a portion of the crop stalks thrown by the grass discharge roller to the chopper to be cut by the chopping blade;
a lower stripper plate positioned substantially in front of the chopper roller, disposed obliquely with respect to the vertical direction, capable of receiving crop stalks from the weed discharge roller and guiding the crop stalks to the chopper; the lower material receiving plate has a front end curled into at least a partial cylindrical shape, and a main body portion located behind the front end; the main body part is of a flat plate structure; the axis of the at least partial cylinder is parallel to and above and forward of the second axis; the horizontal distance of the axis of the at least partial cylinder from the second axis is greater than the radius of the chopper; the vertical distance between the axis of the at least partial cylinder and the second axis is less than the diameter of the chopper; the distance between the axis of the at least partial cylinder and the rear end of the upper material receiving plate is larger than or equal to the radius of the chopper.
2. The chopper assembly of claim 1 wherein the upper catcher plate has a front side edge, a rear side edge, and left and right side edges, wherein the front side edge is parallel to and above the first axis.
3. The chopper assembly of claim 2, wherein the horizontal distance of the front side edge from the first axis is less than or equal to a diameter of the weed extractor roller.
4. The chopper assembly of claim 2, wherein the vertical distance of the front side edge from the first axis is greater than or equal to a radius of a weed-ejecting roller.
5. The chopper assembly of claim 2 wherein the upper catcher plate includes a front portion, a middle portion, and a rear portion; the front side part and the rear side part are of flat plate structures, and the middle part is of a bent plate structure.
6. The chopper assembly of claim 2 wherein the rear side edge is parallel to and above and forward of the second axis.
7. The chopper assembly of claim 6, wherein the horizontal distance of the rear side edge from the second axis is greater than or equal to one-third of the radius of the chopper, and the vertical distance of the rear side edge from the second axis is greater than or equal to the radius of the chopper.
8. The chopper assembly of claim 1 wherein the at least partial cylinder has a radius of at least 10 millimeters.
9. The chopper assembly of claim 1 wherein the at least partial cylinder has a radius of at least 20 millimeters.
10. The chopper assembly of claim 1 wherein the body portion is disposed at an angle relative to a horizontal plane, the angle between the body portion and the horizontal plane being greater than or equal to 20 degrees.
11. The chopper assembly of claim 1 wherein a weed-expelling roller concave plate is disposed below the weed-expelling roller, the weed-expelling roller concave plate having a grid configuration to allow crop kernels to fall.
12. The chopper assembly of claim 11 wherein a conveyor belt is further disposed between the weed-ejecting roller recess plate and the lower material receiving plate; the conveyor belt can convey part of the crop stalks thrown out by the grass discharging roller to the chopper through rotation.
13. The chopper assembly of claim 12 wherein there is further provided a deck extension plate connected to a rear end of the row of grass roller deck; the deck extension panel has a leading edge and a trailing edge, and the trailing edge is located above and behind the leading edge; the concave plate extension plate has a smooth upper surface, and the angle between the upper surface and the horizontal plane is 10-20 degrees.
14. The chopper assembly of claim 13, wherein a trailing edge of the deck extension is parallel to the first axis and is spaced a horizontal distance from the first axis that is greater than a radius of the weed extractor roller.
15. The chopper assembly of claim 14, wherein a horizontal distance of a trailing edge of the deck extension plate from the first axis is greater than a diameter of the weed extractor roller.
16. The chopper assembly of claim 1 wherein the chopper blade is rotatably mounted on the chopper roller.
17. The chopper assembly of claim 1 wherein the chopper further comprises a stationary knife bar disposed forwardly and downwardly of the chopper roller, the stationary knife bar having a length direction parallel to the second axis, and a plurality of stationary knife blades disposed at equal intervals on the stationary knife bar; when the chopper roller is driven to rotate, the chopper roller drives the chopper blade to rotate through the gap between the stationary cutter blades.
18. The chopper assembly of claim 17 wherein the chopper assembly further comprises a fixed knife bar adjustment device comprising a rotating shaft and a mounting frame, the fixed knife bar being mounted on the mounting frame and being rotatable about the rotating shaft by the mounting frame to adjust the relative position between the fixed knife bar and the second axis.
19. The chopper assembly of any one of claims 1 to 7, wherein the chopper further has an upper cover plate which is positioned between the left and right side walls and a front end of which is connected to the upper catcher plate.
20. The chopper assembly of claim 19 wherein a first projection is formed on the upper cover plate to project toward the chopper roller, the first projection extending in a direction parallel to the second axis.
21. The chopper assembly of any one of claims 1 to 18 wherein the chopper further has a lower cover plate positioned between the left and right side walls and having a front end connected to the lower feed plate.
22. The chopper assembly of claim 21 wherein a second projection is formed on the lower cover plate and projects toward the chopper roller, the second projection extending in a direction parallel to the second axis.
23. The chopper assembly of claim 1 wherein the chopper assembly further includes a spreader located behind the chopper, the spreader having a left side plate, a right side plate, and an upper guide plate connecting the left and right side plates, the upper guide plate having a plurality of guide vanes mounted thereon for guiding the chopped crop stalks to be thrown rearwardly.
24. The chopper assembly of claim 23 wherein a rear end of the left side wall of the chopper is fixedly mounted with a left connecting plate having a first elongated hole;
a left side plate of the spreader is provided with a left pin shaft which is inserted into the first long hole; the left side wall is rotatably provided with a left limiting piece, the left limiting piece is provided with a first notch, and the first notch is used for accommodating the left pin shaft;
the rear end of the right side wall of the chopper is fixedly provided with a right connecting plate, and the right connecting plate is provided with a second long hole;
the right side plate of the spreader is provided with a right pin shaft which is coaxially arranged with the left pin shaft, and the right pin shaft is inserted into the second long hole; the right side wall is rotatably provided with a right limiting part, the right limiting part is provided with a second notch, and the second notch is used for accommodating the right pin shaft.
25. The chopper assembly of claim 24 wherein there is further provided a spreader position adjustment structure comprising,
long grooves respectively arranged on the left side plate and the right side plate of the spreader;
adjusting bolts respectively arranged on the left side wall and the right side wall of the chopper; and
the adjusting nut is matched with the adjusting bolt; the adjusting bolt is received in the elongated slot and guides the spreader to rotate about the left and right pins.
26. A combine harvester, wherein the combine harvester comprises:
a walking assembly for walking the combine harvester;
a harvesting assembly for harvesting a crop;
a conveying assembly for conveying the harvested crop backward;
a threshing and cleaning assembly for receiving the crop from the conveying assembly and performing a threshing and cleaning process; and
the chopper assembly of any of claims 1-25.
27. A combine harvester according to claim 26, wherein the threshing cleaning assembly includes a tailscreen, the rear end of which is located horizontally between the first and second axes.
28. A combine harvester according to claim 27, wherein the front end of the lower blanking plate of the shredder assembly extends below the tailscreen and is adjacent a lower surface of the tailscreen.
29. A combine harvester according to claim 27, wherein the rear end of the tailscreen is spaced horizontally more than 200mm from the front end of the lower blanking plate of the shredder assembly.
30. A combine harvester according to claim 27, wherein the rear end of the tailscreen is higher than the front end of the lower flitch of the shredder assembly.
31. A combine harvester according to claim 29, wherein the tailscreen extends obliquely from a lower front to an upper rear, the extension of the tailscreen being higher than the front end of the lower material plate of the shredder assembly.
32. A combine harvester according to claim 27, wherein the combine harvester has a left body side wall to which the left side wall of the shredder is mounted by a first chute bracket and a right body side wall to which the right side wall is mounted by a second chute bracket to allow the shredder to slide.
33. A combine harvester according to claim 32, wherein the second chute bracket is arranged side-to-side symmetrically to the first chute bracket; and the number of the first and second electrodes,
the first runner bracket includes:
a left body side bracket mounted on the left body side wall;
a left chopper side bracket mounted on the chopper left side wall;
the second chute bracket comprises:
a right body side bracket mounted on the right body side wall;
a right chopper side bracket mounted on the chopper right side wall.
34. The combine harvester of claim 33, wherein the left body side bracket has a first bent portion bent toward one side of the body, the left chopper side bracket has a second bent portion bent toward the other side of the body, and the second bent portion is located above and supported by the first bent portion when the chopper is in the mounted position;
the right side machine body side bracket is provided with a third bending part bending towards one side of the machine body, the right side chopper side bracket is provided with a fourth bending part bending towards the other side of the machine body, and when the chopper is positioned at the installation position, the fourth bending part is positioned above the third bending part and supported by the third bending part.
35. The combine harvester of claim 34, wherein the first and second bent portions have a plurality of bolt holes, respectively, to allow bolts to pass through and be fixed;
the third bent part and the fourth bent part are respectively provided with a plurality of bolt holes so as to allow bolts to pass through and be fixed.
36. A combine harvester according to claim 26, wherein the combine harvester includes a first pulley mounted coaxially with the weed extractor roller for driving the rotation of the weed extractor roller.
37. A combine harvester according to claim 36, further comprising a second pulley mounted coaxially with the chopper roller for driving rotation of the chopper roller.
38. A combine harvester according to claim 37, wherein the first pulley has a diameter greater than a diameter of a second pulley, the first pulley driving the second pulley via a belt.
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CN112314071A (en) * 2020-10-26 2021-02-05 湖南脊水农业开发有限公司 Weeding device for paddy planting
CN115226485A (en) * 2022-06-29 2022-10-25 扬州市金谷机械有限公司 Corn stalk collecting, crushing and returning device and processing method thereof
CN115380702B (en) * 2022-10-28 2023-01-24 潍柴雷沃智慧农业科技股份有限公司 Chopper mounting structure and harvester

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