CN107535194B - Single longitudinal axial flow rigid-flexible coupling corn threshing device - Google Patents
Single longitudinal axial flow rigid-flexible coupling corn threshing device Download PDFInfo
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- CN107535194B CN107535194B CN201710902717.9A CN201710902717A CN107535194B CN 107535194 B CN107535194 B CN 107535194B CN 201710902717 A CN201710902717 A CN 201710902717A CN 107535194 B CN107535194 B CN 107535194B
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Abstract
The invention discloses a single longitudinal axial flow rigid-flexible coupling corn threshing device which comprises a rack and a cylindrical threshing cylinder, wherein two ends of the cylindrical threshing cylinder are rotatably supported on the rack; the rigid-flexible coupling threshing unit is spirally arranged around the outer periphery of the front section of the threshing cylinder; the coaxial cover is established the outside cavity tube-shape concave plate sieve of threshing cylinder, the concave plate sieve includes: a plurality of support bars that are the interval arrangement of helix type extends, fix the first baffle of the both sides of support bar, the lower extreme is embedded into the concave plate threshing strip in the accommodation space. The threshing method has the advantages that the threshing is realized through the rigid-flexible coupling effect, the breaking rate of corn grains is further reduced, and the threshing net rate is improved through increasing the threshing strength.
Description
Technical Field
The invention relates to agricultural machinery, in particular to a single longitudinal axial flow rigid-flexible coupling corn threshing device.
Background
The direct-harvesting corn threshing device is a development direction of future mechanized harvesting of corn, however, most of China has high moisture content during harvesting of corn, and has higher requirements on the direct-harvesting corn threshing device. The longitudinal axial flow type corn threshing device is named because the axial direction of a threshing cylinder of the threshing device is the same as the walking direction of a harvester, and is more widely applied because the threshing efficiency of the longitudinal axial flow type corn threshing device is higher than that of a transverse axial flow type threshing device.
The axial flow type threshing device consists of a threshing cylinder and a concave sieve, most of threshing elements of the existing threshing cylinder adopt the forms of threaded rods, spike teeth, plate teeth and the like, and are directly and rigidly connected on the surface of the threshing cylinder, the concave sieve consists of a grid plate and grid bars, and the plane of the grid plate is parallel to the axis of the threshing cylinder. The corn ears passively move in a threshing gap formed by the threshing cylinder and the concave sieve, and move in a circumferential spiral line along the axial direction of the cylinder under the action of a threshing element of the threshing cylinder, and are threshed under the impact and friction action of the threshing element and the concave sieve, however, the threshing element and the concave sieve apply line contact or point contact acting force to the corn ears, the impact force and the rubbing strength to grains are high, and particularly, when the corn with high water content is threshed, the damage to a large number of corn grains is easily caused, so that a corn threshing device which is suitable for high water content, low grain breakage rate and high efficiency is urgently needed.
Disclosure of Invention
The invention provides a single longitudinal axial flow rigid-flexible coupling corn threshing device for solving the defects of the prior art, and the crushing rate of corn kernels is further reduced;
another object of the present invention is to improve threshing performance by increasing threshing strength.
The technical scheme provided by the invention is as follows: the utility model provides a imitative hard gentle coupling corn thresher of single vertical axial flow, includes:
a frame; and
a cylindrical threshing cylinder, two ends of which are rotatably supported on the frame;
the rigid-flexible coupling threshing units spirally surround the outer periphery of the front section of the cylindrical threshing cylinder, and the adjacent rigid-flexible coupling threshing units are arranged at intervals in a staggered manner;
the hollow cylindrical concave plate sieve is coaxially sleeved outside the cylindrical threshing cylinder, and the concave plate sieve is fixed with the frame; the diameter of the concave plate screen is gradually increased from one end to the other end;
the hollow cylindrical concave plate sieve comprises:
a plurality of support bars extending from one end to the other end of the concave screen and arranged at intervals in a spiral line shape;
the first baffle plates are fixed on two sides of the supporting bar; grooves are formed in the opposite surfaces of the second baffles on the two sides of the supporting bar to form accommodating spaces;
the upper surface of the concave plate threshing strip is provided with an inclined concave arc surface, so that the threshing strength is increased, and the threshing rate is improved; the lower end of the connecting rod is embedded into the accommodating space;
two ends of the first spring are respectively supported on the lower surface of the concave threshing bar and the supporting bar;
Wherein the upper surface of the concave threshing strip faces the axial direction of the hollow cylindrical concave sieve.
Preferably, the threshing cylinder is spirally arranged and fixed on the outer peripheral surface of the rear section of the cylindrical threshing cylinder, the upper end of the threshing cylinder is provided with an oblique section, and the oblique section is provided with a plurality of mutually parallel convex edges; and a plurality of grooves which are parallel to each other and extend along the axial direction of the threshing column are arranged on two side surfaces of the threshing column corresponding to two ends of the convex edge.
Preferably, the U-shaped support is provided with a U-shaped groove;
one end of the threshing element can rotate around one end of the U-shaped groove, and the other end of the threshing element is supported at the other end of the U-shaped groove in a floating mode; the threshing element can rotate around one end of the U-shaped groove within a certain angle;
and two ends of the second spring are respectively supported at the bottom of the threshing element and the bottom of the U-shaped groove.
Preferably, the rotating shaft is arranged at one end of the U-shaped groove and is hinged with the threshing element, so that the threshing element can rotate and move to be attached to the surface of the corn kernel;
and the second baffle is arranged at the other end of the U-shaped support and is provided with a through hole, and the vertical protruding part of the threshing element is inserted into the through hole from bottom to top.
Preferably, a plurality of annular support ribs having a spaced annular winding around the outer periphery of the hollow cylindrical recess plate screen.
Preferably, the upper surface of the threshing element is an inclined surface, and a plurality of grooves which are longitudinally arranged along the inclined surface and are mutually connected are arranged on the upper surface of the threshing element; the inclined direction of the concave threshing strip is opposite to the inclined direction of the threshing element.
Preferably, the rising angle of the rigid-flexible coupling threshing unit arranged along the spiral line is the same as that of the supporting bar, so that the rigid-flexible coupling threshing unit forms a meshing shape relative to the corn ears in the threshing process, and the surface contact with corn grains is favorably realized.
Preferably, the inclined section of the threshing column has the same inclination angle with the concave threshing element, and can form occlusion relative to the corn ears in the threshing process, so as to be beneficial to threshing.
Preferably, the rack includes:
a cross beam;
the suspension arms extend along the two ends of the cross beam in the same direction; the cylindrical threshing cylinder is rotatably supported at the outer extending end of the suspension arm;
the middle parts of the at least two arc-shaped crank arms are fixed on the cross beam; the extending end of the crank arm is fixedly connected with the hollow cylindrical concave plate sieve.
Preferably, the spiral feeding head is fixed at the front end of the cylindrical threshing cylinder, and the surface of the spiral feeding head is provided with spiral feeding blades around the circumference.
The invention has the following beneficial effects: 1) threshing element on the cylinder is the shape design of imitative corn ear and seed grain profile, and the threshing strip cooperation of imitating contact cambered surface design with the concave screen is threshed, realizes threshing element and corn ear's face contact, reduces to corn kernel effect intensity to improve threshing performance, reduce the seed grain breakage rate. 2) The threshing elements on the roller are connected with the support, and the concave threshing strips of the concave sieve are connected with the spiral supporting strips through springs, so that the concave threshing strips have elasticity, a rigid-flexible coupling threshing effect is realized, and the corn kernel crushing rate is further reduced. 3) The oblique section of the threshing column is provided with oblique convex edges, and the two sides of the threshing column are provided with grooves, so that the threshing column is favorable for realizing surface contact with corn grains, the threshing strength is increased, and the threshing rate is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the structure of a threshing cylinder according to an embodiment of the invention.
Fig. 3 top view of a rigid-flexible coupled threshing unit according to an embodiment of the invention
Fig. 4 is a side view of a rigid-flexible coupled threshing unit according to an embodiment of the invention.
FIG. 5 is a schematic structural view of a spiral recess screen of an embodiment of the present invention.
Fig. 6 is a schematic structural view of a concave elastic threshing element according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a threshing cylinder according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of the engaging structure between the concave elastic threshing element and the threshing element of the rigid-flexible coupled threshing unit according to the embodiment of the present invention.
Wherein, 1, the frame; 2. a hood; 3. a crank arm; 4. a suspension arm; 5. a threshing cylinder; 6. a spiral concave screen; 7, a corn ear model; 510, an outer barrel; 520 a threshing cylinder; 530 a rigid-flexible coupling threshing unit; 540 spiral feed vanes; a 550 conical feed head; 521 a rib; 522 obliquely cutting the column; 523 groove; 531 adjusting the bolts; 532 a threshing element; 533 a second baffle; 534 a rotating shaft; 535 a support; 536 a second support bar; 537 second spring; 610 circular support ribs; 620 concave plate elastic threshing elements; 630 spiral support bars; 621 concave threshing strips; 622 a first baffle; 623 a first spring; 624 first support bar; 625 fixing the bolts.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in FIG. 1, the single longitudinal axial flow rigid-flexible coupling corn threshing device of the invention comprises a frame 1 and a suspension arm 4, wherein the suspension arm extends along two ends of a cross beam of the frame 1 in the same direction; the middle parts of the at least two arc-shaped crank arms 3 are fixed on the cross beam; a cylindrical threshing cylinder 5, two ends of which are rotatably supported on the frame 1 and positioned at the extending end of the suspension arm 4; and the hollow cylindrical concave plate sieve 6 is coaxially sleeved outside the cylindrical threshing cylinder 5 and is fixed on the inner side of the extending end of the crank arm 3, and the diameter of the concave plate sieve 6 is gradually increased from one end to the other end.
As shown in fig. 2, the outer surface of the threshing cylinder 5 is covered with an outer cylinder 510, a conical screw feeder 550 is rotatably fixed at the front end of the cylinder, and a screw feeder blade 540 is provided at the front end of the screw feeder 550; the outer surface of the front part of the outer cylinder 510 is spirally distributed with rigid-flexible coupling threshing units 530, and the helix lead angle is the same as that of the helical support strips 630 on the concave sieve 6; the outer tub 510 is more densely distributed on the outer surface of the rear portion of the outer tub 510, and is arranged in a spiral line at the rear portion of the outer tub. Fig. 3 is a top view of the rigid-flexible coupling threshing unit 530, wherein three hexagonal adjusting bolts 531 are arranged on one side of each rigid-flexible coupling threshing unit 530, and three threshing elements 532 are arranged in parallel in the middle.
As shown in fig. 4, the threshing element 532 is a triangular prism, the upper surface of which is an oblique section, the oblique surface is composed of a plurality of grooves composed of arc sections and oblique surface sections at two sides, and the grooves can contact with the corn ear seeds during the threshing process, and the surface of the threshing element. The threshing element 532 is hinged with one side of a support 535 through a rotating shaft 534, the support 535 is fixed on the surface of the outer cylinder 510, a plurality of second springs 537 are arranged in a gap between the support 535 and the threshing element 532, the lower ends of the second springs are fixed on the support 535, the upper ends of the second springs are fixed on the lower surface of the threshing element 532, and a second support bar 536 is arranged in the threshing element 532, so that the threshing element 532 can generate elastic displacement, meanwhile, a second baffle 533 is arranged on the other side edge of the support 535, and the limit position of the elastic displacement of the threshing element 532 can be limited, and the rigid-flexible coupling performance of the threshing unit is realized.
As shown in fig. 5, the spiral-type concave sieve 6 is provided with concentric circular support ribs 610 having increasing radii in order from the upper end to the lower end, the concave threshing elements 620 are fixed to the support ribs 610 by annular support bars 630, and the support bars 630 extend from one end to the other end of the concave sieve 6 and are arranged at intervals in a spiral line; and the concave threshing elements 620 are arranged at intervals in a spiral line. Each concave threshing element 620 is structured as shown in fig. 6, a first baffle 622 fixed on both sides of a supporting bar 630; the opposite surfaces of the second baffles 622 on both sides of the supporting bar 630 are provided with grooves to form accommodating spaces, the right side of the first baffle 622 is provided with a fixing bolt 625, the annular supporting bar 630 surrounds the bottom of the first baffle 622 through the center thereof, the upper surface of the concave threshing bar 621 is provided with an inclined concave arc surface, and the lower end of the concave threshing bar is embedded into the accommodating spaces; threshing bar 621's the bottom and support bar 630's the upper end between the installation be fixed with first spring 623, the inside first bracing piece 624 that is equipped with of first spring 623, under the initial condition, there is one section distance in the top distance threshing bar 621's of first bracing piece 624 bottom, in operating condition, first bracing piece 624 can inject the position of first spring 623, make concave plate threshing bar 621 have elasticity in the certain limit, and simultaneously, concave plate threshing bar 621 upper surface is equipped with the sunken arc surface of slope, corn ear forms the meshing form when relative with threshing element 532 of threshing cylinder 5 last rigid-flexible coupling threshing unit 530, be favorable to realizing the surface contact with corn grain.
As shown in fig. 6, the main body of the threshing cylinder 520 is a truncated cylinder 522 with an inclined cross section at one end, two side faces of the truncated cylinder 522 are uniformly provided with grooves 523 parallel to the vertical axis, the inclined cross section at the upper end is provided with parallel strip-shaped protruding ridges 521, the strip-shaped protruding ridges 521 are distributed in an inclined manner, the inclined angle is the same as the inclined angle of the concave plate elastic threshing element 620 of the concave plate sieve 6, and the design of the arc-shaped groove 523 is favorable for realizing surface contact with corn kernels.
As shown in fig. 7, during threshing, the threshing cylinder 5 continuously rotates, the corn ears 7 enter the threshing gap formed between the threshing cylinder 5 and the concave sieve 6 through the guiding of the spiral feeding blade 540 by the conical feeding head 550, when the corn ears 7 contact the concave elastic threshing element 620 and the rigid-flexible coupling threshing unit 530, the two elastic elements can perform displacement adjustment according to the radius of the corn ears 7, so that the corn ears are just between the corn ears, at the moment, the corn kernels are just attached to the arc-shaped grooves of the threshing element 532 and the arc-shaped surfaces of the threshing bars 621, the two opposite arc-shaped directions of the two opposite elements are opposite, and can just form a mutual meshing shape with the corn kernels, and under the driving of the threshing cylinder 5, the threshing element 532, the threshing bars 621 and the threshing column 520 cooperate with each other to thresh. Meanwhile, the corn ears 7 rotate and roll to complete the threshing work.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (5)
1. A single longitudinal axial flow rigid-flexible coupling corn threshing device, comprising:
a frame; and
a cylindrical threshing cylinder, two ends of which are rotatably supported on the frame;
the rigid-flexible coupling threshing units spirally surround the outer periphery of the front section of the cylindrical threshing cylinder, and the adjacent rigid-flexible coupling threshing units are arranged at intervals in a staggered manner;
the rigid-flexible coupling threshing unit comprises:
a U-shaped support having a U-shaped groove;
one end of the threshing element can rotate around one end of the U-shaped groove, and the other end of the threshing element is supported at the other end of the U-shaped groove in a floating mode; the threshing element can rotate around one end of the U-shaped groove within a certain angle;
the two ends of the second spring are respectively supported at the bottom of the threshing element and the bottom of the U-shaped groove;
A revolving shaft which is arranged at one end of the U-shaped groove and is hinged with the threshing element;
a second baffle plate which is arranged at the other end of the U-shaped support and is provided with a through hole, and a vertical convex part of the threshing element is inserted into the through hole from bottom to top;
the hollow cylindrical concave plate sieve is coaxially sleeved outside the cylindrical threshing cylinder and is fixed with the rack; the diameter of the hollow cylindrical concave plate sieve is gradually increased from one end to the other end;
the hollow cylindrical recess plate sieve comprises:
a plurality of support bars extending from one end to the other end of the hollow cylindrical concave screen and arranged at intervals in a spiral line shape;
the first baffle plates are fixed on two sides of the supporting bar; the opposite surfaces of the first baffle plates on the two sides of the supporting bar are provided with grooves to form accommodating spaces;
the upper surface of the concave threshing strip is provided with an inclined concave arc surface; the lower end of the support is embedded into the accommodating space;
the two ends of the first spring are respectively supported on the lower surface of the concave threshing bar and the supporting bar;
wherein the upper surface of the concave threshing bar faces to the axial direction of the hollow cylindrical concave sieve;
the threshing cylinder is fixed on the outer peripheral surface of the rear section of the cylindrical threshing cylinder in a spiral arrangement mode, the upper end of the threshing cylinder is provided with an oblique section, and a plurality of mutually parallel convex edges are arranged on the oblique section; two side surfaces of the threshing column corresponding to two ends of the convex edge are provided with a plurality of grooves which are parallel to each other and extend along the axial direction of the threshing column;
The spiral feeding head is fixed at the front end of the cylindrical threshing cylinder, and spiral feeding blades are arranged on the surface of the spiral feeding head around the circumference;
wherein, the upper surface of the threshing element is an inclined surface, and a plurality of grooves which are longitudinally arranged along the inclined surface and are mutually connected are arranged on the threshing element; the inclined direction of the concave threshing strip is opposite to the inclined direction of the threshing element;
threshing element passes through the revolving axle and articulates with U-shaped support one side, and the surface at the urceolus is fixed to the U-shaped support, is equipped with a plurality of second springs in the middle space of U-shaped support and threshing element, and its lower extreme is fixed on the U-shaped support, and the upper end is fixed at threshing element lower surface, and its inside second bracing piece that is equipped with for threshing element can take place elastic displacement, and simultaneously, the opposite side limit of U-shaped support is equipped with the second baffle, and it can inject threshing element's elastic displacement's extreme position, has realized the rigid-flexible coupling performance of rigid-flexible coupling threshing unit.
2. The single longitudinal axial flow rigid-flexible coupled corn threshing device of claim 1, further comprising:
a plurality of annular support ribs having a certain interval and annularly wound around the outer periphery of the hollow cylindrical concave plate screen.
3. The single longitudinal axial flow rigid-flexible coupled corn threshing device of claim 2, wherein:
The lead angle of the rigid-flexible coupling threshing unit arranged along the spiral line is the same as that of the supporting bar.
4. The single longitudinal axial flow rigid-flexible coupled corn thresher of claim 1, wherein the oblique cross-section of said threshing cylinder is the same as the angle of inclination of said concave threshing bars.
5. The single longitudinal axial flow rigid-flexible coupled corn thresher of claim 4, wherein said frame comprises:
a cross beam;
the suspension arms extend along the two ends of the cross beam in the same direction; the cylindrical threshing cylinder is rotatably supported at the outer extending end of the suspension arm;
the middle parts of the at least two arc-shaped crank arms are fixed on the cross beam; the overhanging end of the arc-shaped crank arm is fixedly connected with the hollow cylindrical concave plate sieve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710902717.9A CN107535194B (en) | 2017-09-29 | 2017-09-29 | Single longitudinal axial flow rigid-flexible coupling corn threshing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710902717.9A CN107535194B (en) | 2017-09-29 | 2017-09-29 | Single longitudinal axial flow rigid-flexible coupling corn threshing device |
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| CN107535194A CN107535194A (en) | 2018-01-05 |
| CN107535194B true CN107535194B (en) | 2022-07-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110741815A (en) * | 2019-12-02 | 2020-02-04 | 吉林大学 | Formula high moisture content corn thresher is rubbed to axis of ordinates stream |
| CN111820013B (en) * | 2020-07-21 | 2022-08-09 | 河南科技大学 | Longitudinal axial flow micro-motion rigid-flexible coupling millet threshing device |
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Inventor after: Zhang Qiang Inventor after: Lin Chengyu Inventor after: Hou Guozhen Inventor after: Qin Wuyang Inventor after: Du Haiping Inventor after: Yan Huimin Inventor after: Zhang Li Inventor after: Chen Zhi Inventor after: Fu Jun Inventor before: Zhang Qiang Inventor before: Yan Huimin Inventor before: Hou Guozhen Inventor before: Lin Chengyu Inventor before: Qin Wuyang Inventor before: Du Haiping |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |