CN111279892A

CN111279892A - Corn thresher

Info

Publication number: CN111279892A
Application number: CN201910334300.6A
Authority: CN
Inventors: 方淳; 戴晟; 范剑; 李军; 秦利明; 田诚鑫
Original assignee: Taizhou University
Current assignee: Taizhou University
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-06-16
Anticipated expiration: 2039-04-24
Also published as: CN111279892B

Abstract

The invention provides a corn thresher, belongs to the technical field of agricultural machinery, and improves threshing efficiency and threshing effect of corn. The corn thresher comprises a frame and is characterized by comprising a spiral feeding mechanism, a conveyor belt feeding mechanism, a rotary threshing mechanism and a transmission mechanism; the corn cobs are conveyed into the rotary threshing mechanism through the spiral feeding mechanism and the conveying belt feeding mechanism, the corn cobs are threshed in the threshing mechanism under the action of the stirring rods and the stirring grids, and threshed corn kernels and impurities are separated and collected. The invention has the advantages of high threshing efficiency, good threshing effect and the like.

Description

Corn thresher

Technical Field

The invention belongs to the technical field of agricultural machinery, and relates to a corn thresher.

Background

The corn threshing method comprises the traditional manual threshing and machine threshing, wherein the manual threshing is to push down several rows along corn kernels by using a screw driver, then push the rows at intervals, and then rub the corn kernels by hands or two corn cobs, so that the efficiency is low, and the efficiency of the machine threshing is greatly improved compared with the manual threshing. Chinese patent (application No. cn201020113956.x) discloses a corn thresher, which comprises a frame, a threshing roller, a screen, an outer cover and the like, wherein threshing teeth, connecting bars and upright columns on the threshing roller are used for respectively applying pressure to corn cobs, manpower is simulated to knead the corn cobs for threshing, the corn cobs are usually temporarily accumulated on the ground for storage after being harvested, when the thresher is used for threshing, the corn cobs to be threshed are firstly poured into the thresher by manpower, the automation degree is not high enough, and when the threshing teeth in the thresher are used for threshing, corn particles are easily scratched. Chinese patent (application number: CN201820552359.3) discloses a simple agricultural corn thresher device, which comprises a corn threshing chamber, wherein the surface of a rotating shaft is fixedly connected with rotating teeth, the inner wall of the corn threshing chamber is fixedly connected with fixed teeth, and threshing is carried out by the interaction of the rotating teeth and the fixed teeth on the inner wall of the threshing chamber under the rotation of the rotating shaft.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a corn thresher, solves the problems in the background technology, and improves the threshing efficiency and effect of corn.

The purpose of the invention can be realized by the following technical scheme: a corn thresher comprises a frame and is characterized by comprising a spiral feeding mechanism, a conveyor belt feeding mechanism, a rotary threshing mechanism and a transmission mechanism;

the spiral feeding mechanism comprises a bucket, the bucket is provided with a shovel port and a semi-open bucket cavity, a spiral impeller is arranged in the bucket cavity in a rotating mode and comprises a spiral rod and a spiral blade, the spiral rod is horizontally arranged between two side ends of the bucket in an axially fixed circumferential rotating mode, a material stirring mechanism is further arranged on the front side of the spiral impeller and comprises a pentagonal rotating column, a first rotating shaft penetrates through the center of the rotating column and is fixed, the first rotating shaft is fixed between the two side ends of the bucket in an axially fixed circumferential rotating mode, a plurality of material stirring rods are fixed to each edge of the rotating column along the length direction, and the spiral rod and the first rotating shaft are connected with the transmission mechanism;

the conveying belt feeding mechanism comprises an obliquely arranged rectangular conveying box, a conveying channel is arranged in the conveying box along the length direction, a driven roller is arranged at the bottom end of the conveying channel, a driving roller is arranged at the top end of the conveying channel, a conveying belt is sleeved between the driving roller and the driven roller, a plurality of partition plates perpendicular to the surface of the conveying belt are fixed on the conveying belt and evenly distributed along the length direction of the conveying belt in the circumferential direction, the bottom end of the conveying box is connected with one side end of the bucket, the bottom end of the conveying channel is communicated with a bucket cavity of the bucket through a first material opening, and the driving roller is connected with the transmission mechanism;

the rotary threshing mechanism comprises a threshing cabin fixed on a rack, the threshing cabin is provided with an inner cavity, the upper part of the inner cavity is a threshing cavity, the lower part of the inner cavity is a separation cavity communicated with the threshing cavity, a stirring roller is horizontally arranged in the threshing cavity, the outer cylindrical surface of the stirring roller is uniformly distributed with stirring rods along the circumferential direction and the axial direction, an arc-shaped stirring grid is fixed in the threshing cavity, one end of the stirring rod is fixed with the outer cylindrical surface of the stirring roller, the other end of the stirring rod is close to the stirring grid, the stirring roller is connected with the transmission mechanism, the bottom end of the threshing cabin is provided with a first discharge port communicated with the inside and the outside of the separation cavity, the outer side wall of the threshing cabin is provided with a second discharge port communicated with the separation cavity, one side of the threshing cabin opposite to the second discharge port is provided with a fan, an air channel is formed between the fan and, a gate is arranged at the third discharge port, and the top end of the conveying channel is communicated with the threshing cavity through a second discharge port.

The working principle is as follows: the corn thresher is vertically placed on the ground through the rack, the bottom surface of the bucket is placed on the ground, so that a shovel opening of the bucket is flatly attached to the ground, corn cobs conveniently piled on the ground smoothly enter a bucket cavity of the bucket from the shovel opening, the corn is usually piled on the ground for temporary storage after being harvested, when threshing is carried out, the corn thresher is placed on the ground, the shovel opening of the bucket is close to a corn stack, the piled corn cobs are shoveled towards the shovel opening of the bucket by means of a shovel and other tools, under the action of a stirring mechanism, a stirring rod rotates along with a rotating column, the corn cobs at the shovel opening are stirred into the bucket, the corn cobs enter the bucket cavity and enter between adjacent spiral blades, under the action of a spiral feeding mechanism, the spiral blades rotate, the corn cobs in the spiral blades are conveyed to the bottom end of a conveying box, and under the action of a conveying belt, the corn-on-cob is shoveled by the baffle on the conveyer belt and is got into from material mouth one between a plurality of baffles on the conveyer belt that lie in transfer passage, carry along with the conveyer belt upwards, the top of conveying case is carried to the corn-on-cob, receive the effect of gravity, the corn-on-cob falls into the intracavity of threshing from the baffle landing through material mouth two, the corn-on-cob of threshing intracavity stops on the stirring grid, the stirring roller drives the puddler and rotates, stir the corn-on-cob, make between corn-on-cob and the stirring grid, produce the extrusion each other between corn-on-cob and the puddler and between corn-on-cob, the friction makes the kernel of corn break away from on the. The kernel of corn that breaks away from on the corn-on-cob down drops to the separation chamber from the stirring grid, under the effect of fan, impurity such as some corn silk, leaf skin that mix with in the kernel of corn are blown to the wind channel, blow off the cabin of threshing through the wind channel from the second discharge gate outside, and the impurity that mix with in the kernel of corn is separated the back through the separation chamber, and the kernel of corn down drops, can place the collecting vessel and collect subaerially threshing the cabin below. After the corn cobs are threshed in the threshing cabin, the gate at the third discharge port is opened, and the corn cobs in the threshing cabin are driven to the third discharge port under the rotation action of the stirring rod and fall out of the threshing cabin from the third discharge port.

The transmission mechanism comprises a driving motor fixed on the frame through a support, a first belt wheel is fixed on an output shaft of the driving motor, a screw rod penetrates through and is fixed with a second rotating shaft along the axial lead of the screw rod, the second rotating shaft is rotatably arranged between two side ends of the bucket, one end of the second rotating shaft extends out of the bucket and is fixed with a second belt wheel, a first transmission belt is sleeved between the first belt wheel and the second belt wheel, one end of the first rotating shaft, which is at the same side as the second belt wheel, extends out of the side wall of the bucket and is fixed with a third belt wheel, a second transmission belt is sleeved between the second belt wheel and the third belt wheel, a third rotating shaft is fixedly arranged between two side walls of the threshing cabin along the axial lead of the mixing roller, one end of the third rotating shaft extends out of the side wall of the threshing cabin and is fixed with a fourth belt wheel, the other end of the third rotating shaft extends, the driving roller penetrates through and is fixed with a fourth rotating shaft along the axial lead of the driving roller, the fourth rotating shaft is rotatably arranged between two side walls of the conveying box, one end of the fourth rotating shaft extends out of one side wall of the conveying box and is fixed with a sixth belt wheel, the driven roller penetrates through and is fixed with a fifth rotating shaft along the axial lead of the driven roller, the fifth rotating shaft is rotatably arranged between two side walls of the conveying box, and a fourth driving belt is sleeved between the fifth belt wheel and the sixth belt wheel. The driving motor enables the first belt wheel to rotate, the first belt wheel enables the second belt wheel to rotate through the first driving belt, and the second belt wheel drives the screw rod to rotate. The second belt wheel rotates the third belt wheel through the second transmission belt, and the third belt wheel rotates the first rotating shaft. The first belt wheel enables the fourth belt wheel to rotate through the third transmission belt, the fourth belt wheel enables the third rotating shaft to rotate, the fifth belt wheel enables the sixth belt wheel to rotate through the fourth transmission belt, and rotation of all parts is achieved through transmission mechanisms such as a driving motor.

The cutting mechanism comprises a first cut-off knife with a V-shaped section, the first cut-off knife comprises an upper cut-off piece and a lower cut-off piece, the upper cut-off piece and the lower cut-off piece are in V-shaped included angles and are fixed mutually, the upper cut-off piece and the lower cut-off piece form a V-shaped included opening, first sawteeth are uniformly arranged at the included angles of the upper cut-off piece and the lower cut-off piece along the length direction of the upper cut-off piece, one end of the first cut-off knife is fixed with one side end of the bucket, the other end of the first cut-off knife is fixed with the other side end of the bucket, the V-shaped included opening of the first cut-off knife is clamped into the edge of the bottom of the bucket, the lower cut-off piece is positioned below the bottom of the bucket, the cutting mechanism further comprises a second cut-off knife, the second cut-off knife is in a strip shape, one side of the second cut-off knife is provided with second sawteeth along the length direction, the second cut-off knife is inserted into the, when the second cutter moves back and forth in the first cutter, the second saw teeth and the first saw teeth move relatively to perform shearing action. The driving mechanism enables the second cut-off knife to move back and forth in the first cut-off knife, the second saw teeth and the first saw teeth move relatively to move to cut, and the corn cob threshing mechanism has the effects that after being collected on a corn cob, the corn cob is firstly removed from the wrapped leaves and the corn stigma which are wrapped outside the corn cob, and then threshing is carried out, sometimes the wrapped leaves and the corn stigma are not completely removed and remained on the corn cob, when the shifting rod is shifted into the bucket, the wrapped leaves or the corn stigma are easily clamped in the gap between the shovel opening and the bottom surface, so that the corn cob smoothly enters the bucket cavity of the bucket, the cutting action is carried out through the first saw teeth and the second saw teeth, the clamped wrapped leaves or the corn stigma is cut off, and the corn cob smoothly enters the bucket cavity of the bucket.

The driving mechanism comprises a first driving rod group and a second driving rod group, the first driving rod group comprises a first driving rod, a second driving rod and a third driving rod, the side wall of one end of the first driving rod is eccentrically fixed with the side wall of the first belt wheel in an axial fixed circumferential rotation mode, the other end of the first driving rod is provided with a U-shaped port, a first pin column is vertically fixed in the U-shaped port, one end of the second driving rod is vertically provided with a first pin hole, the second driving rod is hinged in a mode that the first pin column penetrates through the first pin hole, the other end of the second driving rod is transversely provided with a second pin hole, one end of the third driving rod is transversely fixed with a second pin column, the third driving rod is hinged with the second driving rod in a mode that the second pin column is inserted into the second pin hole, the second driving rod group comprises a first branch rod, a second branch rod and a third branch rod, the first branch rod, the second branch rod and the third branch rod are fixedly connected in a three-fold, divide the handing-over department of two and minute pole three to have a hinge hole, the lateral wall of scraper bowl is vertical to be fixed with hinge post two (the embodiment is fixed through the connecting block), the hinge hole cover is established and is articulated on hinge post two, actuating lever three is articulated through a pull rod and hinge post one, and the one end of pull rod is fixed with the one end of actuating lever three, and the other end is fixed with the hinge cover, and the hinge cover is articulated on going into hinge post one, the vertical downward driving lever that is fixed with of free end of minute pole three, the lateral wall that the scraper bowl was stretched out to the one end of second cut-off knife is fixed with a shifting block, and the groove has been seted up at the top of shifting block, the bottom of driving lever stretches into in the shifting groove. The first belt wheel rotates under the driving of the driving motor, and the side wall of one end of the first driving rod is eccentrically fixed with the side wall of the first belt wheel in an axial fixing circumferential rotating mode, so that the first driving rod, the second driving rod and the third driving rod are driven to move back and forth by the rotation of the first belt wheel, and the back and forth movement is transmitted to the first branch rod, the second branch rod and the third branch rod.

The rotating column comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a first side plate and a second side plate, wherein the first side plate and the second side plate are hollow pentagons, two ends of the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod and the fifth connecting rod are respectively fixed with the side faces of the first side plate and the second side plate, so that the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod and the fifth connecting rod form five edges of the rotating column, a plurality of material stirring rods are respectively fixed on the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod and the fifth connecting rod along the length direction of the first connecting rod, and two ends.

Foretell stirring grid includes a plurality of stirring posts, and a plurality of stirring posts utilize a plurality of curved holders fixed arrangement that are along the semicircle orbit, the holder is fixed with the inner wall in threshing cabin, the one end of stirring post supports with one side wall in threshing cabin and supports and lean on, and the other end of stirring post supports with another side wall in threshing cabin and supports and lean on. When the corn cob threshing machine is used for threshing, part of the corn cobs are positioned between the stirring column and the stirring column, and the corn cobs and the stirring rod, as well as the corn cobs and the corn cobs, are extruded and rubbed with each other to separate corn kernels from the corn cobs, so that the threshing purpose is achieved. The corn kernels separated from the corn cobs fall down to the separation cavity from the space between the stirring column and the stirring column.

Transversely set up the logical groove that link up conveyer belt top surface and bottom surface on above-mentioned conveyer belt, the bottom surface of conveyer belt is worn to establish and is fixed with the plate holder to the top surface by leading to the groove, and the plate holder includes backplate and picture peg, picture peg and backplate vertical fixation, and the slot has been seted up on the top of picture peg, the backplate with the bottom surface of conveyer belt supports and leans on, and the picture peg stretches out to the top surface of conveyer belt from leading to the groove, the baffle insert and establish in the slot, the backplate passes through rivet and conveyer belt fixed.

The access hole has been seted up at the top of above-mentioned conveying case, conveniently overhauls.

The first belt wheel comprises a first positive wheel and a first auxiliary wheel which are coaxially fixed, the second belt wheel comprises a second positive wheel and a second auxiliary wheel, the first auxiliary wheel and the second auxiliary wheel are sleeved with the transmission belt, the second transmission belt is sleeved between the second positive wheel and the third belt wheel, and the third transmission belt is sleeved between the first positive wheel and the fourth belt wheel.

Reinforcing ribs are fixed on two side walls of the bucket, so that the rigidity of the bucket is improved.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, the threshing cabin can accommodate a large amount of corn cobs and simultaneously thresh, and the threshing mechanism has the advantage of high threshing efficiency.

2. According to the corn thresher, corn cobs are threshed by utilizing the relative motion of the stirring column and the stirring grid, and the corn cobs are prevented from being scratched, so that the threshing effect is good.

3. According to the invention, the corn cobs are fed into the thresher from the feeding stage to the threshing stage and are collected, and the threshing is fully automatically completed, so that the corn cob threshing machine has the advantage of high automation degree.

4. The corn thresher is provided with the cutting mechanism, so that the smoothness of the corn cobs entering the bucket is improved, and the anti-jamming machine has the advantage of smooth use in the use process of the thresher.

5. The transmission mechanism only uses one driving motor, and transmits power to each moving part through the transmission mechanism, so that the transmission mechanism has the advantages of simple structure and cost saving.

6. According to the invention, impurities in the corn kernels are separated by the fan and discharged out of the threshing cabin from the air duct, so that the corn kernels collected after threshing have the advantage of purity.

Drawings

FIG. 1 is a schematic diagram of an axial structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic view of the internal structure of the present invention.

Fig. 4 is a schematic view of the axial structure of the threshing module of the present invention.

Fig. 5 is a schematic structural view of the partition board of the invention mounted on the conveying belt through the board seat.

Fig. 6 is a schematic structural view of a first cutter of the present invention.

Fig. 7 is a schematic structural view of a second cutter according to the present invention.

Fig. 8 is a schematic view of the structure of the driving mechanism of the present invention.

Fig. 9 is a schematic view of the structure of the rotating column of the present invention.

Fig. 10 is an enlarged schematic view of the invention at a in fig. 1.

FIG. 11 is an enlarged view of the structure at B of FIG. 2 according to the present invention

In the figure, 1, a bucket; 1a, a shovel port; 2. a helical impeller; 2a, a screw rod; 2b, helical blades; 3. rotating the column; 4. a first rotating shaft; 5. a material poking rod; 6. a delivery box; 7. a driven roller; 8. an active roller; 9. a conveyor belt; 10. a partition plate; 11. a material port I; 12. a threshing cabin; 13. a stirring roller; 14. a stirring rod; 15a, a stirring column; 15b, a retainer; 16. a first discharge port; 17. a second discharge port; 18. a fan; 19. a third discharge port; 20. a gate; 21. a drive motor; 22. a first belt wheel; 22a, a first positive wheel; 22b, a first auxiliary wheel; 23. a second belt wheel; 23a, a second front wheel; 23b, a second auxiliary wheel; 24. a first transmission belt; 25. a third belt wheel; 26. a second transmission belt; 27. a belt wheel IV; 28. a fifth belt wheel; 29. a third transmission belt; 30. a sixth belt wheel; 31. a fourth transmission belt; 32. a first cutter; 32a, an upper cut piece; 32b, a lower cut piece; 32c, a first sawtooth; 33. a second cutter; 33a, a second serration; 34. a first drive rod group; 34a, a first driving rod; 34b, a second driving rod; 34c, a driving rod III; 35. a second drive rod group; 35a, a first branch rod; 35b, a second branch rod; 35c, dividing the rods into three; 36. a first hinge column; 37. a second hinge post; 38. a pull rod; 39. a deflector rod; 40. shifting blocks; 40a, a shifting groove; 41. a first connecting rod; 42. a second connecting rod; 43. a third connecting rod; 44. a connecting rod IV; 45. a fifth connecting rod; 46. a first side plate; 47. a second side plate; 48. a plate base; 48a, a back plate; 48b, inserting plates; 49. riveting; 50. an access hole; 51. reinforcing ribs; 52. a first limiting column; 53. a second limiting column; 54. and a frame.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3 and 4, a corn thresher comprises a frame 54, and is characterized in that the corn thresher comprises a spiral feeding mechanism, a conveyor belt feeding mechanism, a rotary threshing mechanism and a transmission mechanism;

the spiral feeding mechanism comprises a bucket 1, the bucket 1 is provided with a shovel port 1a, the bucket 1 is provided with a semi-open bucket cavity, a spiral impeller 2 is arranged in the bucket cavity in a rotating mode, the spiral impeller 2 comprises a spiral rod 2a and a spiral blade 2b, the spiral rod 2a is horizontal and arranged between two side ends of the bucket 1 in an axially fixed circumferential rotating mode, a material stirring mechanism is further arranged on the front side of the spiral impeller 2 and comprises a pentagonal prism-shaped rotating column 3, a rotating shaft I4 is arranged in the center of the rotating column 3 in a penetrating mode and fixed with the rotating shaft I4, the rotating shaft I4 is fixed between the two side ends of the bucket 1 in the axially fixed circumferential rotating mode, in the embodiment, two ends of the rotating shaft I4 are fixed with the two side ends of the bucket 1 in a bearing arrangement mode, a plurality of material stirring rods 5 are fixed in the length direction of each edge of the rotating column 3, and a plurality of the stirring rods 5 are fixed, the screw rod 2a and the rotating shaft I4 are connected with a transmission mechanism;

the conveying belt feeding mechanism comprises a conveying box 6 which is obliquely arranged and is in a rectangular shape, a conveying channel is arranged in the conveying box 6 along the length direction, a driven roller 7 is arranged at the bottom end of the conveying channel, a driving roller 8 is arranged at the top end of the conveying channel, a conveying belt 9 is sleeved between the driving roller 8 and the driven roller 7, a plurality of partition plates 10 perpendicular to the surface of the conveying belt 9 are fixed on the conveying belt 9, the plurality of partition plates 10 are circumferentially and uniformly distributed along the length direction of the conveying belt 9, the bottom end of the conveying box 6 is connected with one side end of the bucket 1, a material opening I11 is formed in the joint of the bottom end of the conveying box 6 and the bucket 1, the bottom end of the conveying channel is communicated with a bucket cavity of the bucket 1 through the material opening I11, in the embodiment, the spiral blades 2b are not completely distributed along the length direction of the spiral rod 2a, namely, when the corn cobs are conveyed to one end of the material port I11 by the spiral blade 2b, the corn cobs are accumulated in the hopper cavity at one end of the material port I11, under the action of the material stirring mechanism and the conveying belt feeding mechanism, the corn cobs are shoveled by the partition plate 10 on the conveying belt and are conveyed upwards along with the partition plate 10, and the driving roller 8 is connected with the transmission mechanism;

the rotary threshing mechanism comprises a threshing cabin 12 fixed on a frame 54, the threshing cabin 12 is provided with an inner cavity, the upper part of the inner cavity is a threshing cavity, the lower part of the inner cavity is a separation cavity communicated with the threshing cavity, a stirring roller 13 is horizontally arranged in the threshing cavity, stirring rods 14 are uniformly distributed on the outer cylindrical surface of the stirring roller 13 along the circumferential direction and the axial direction, an arc-shaped stirring grid is fixed in the threshing cavity, one end of the stirring rod 14 is fixed with the outer cylindrical surface of the stirring roller 13, the other end of the stirring rod is close to the stirring grid, the distance between the end part of the stirring rod 14 and the stirring grid is three centimeters in the embodiment, the stirring roller 13 is connected with a transmission mechanism, the bottom end of the threshing cabin 12 is provided with a first discharge port 16 communicated with the inside and the outside of the separation cavity, the outer side wall of the threshing cabin 12 is provided with a second discharge port 17 communicated with the separation cavity, a, the top lateral wall of threshing cabin 12 offers the inside and outside third discharge gate 19 of intercommunication threshing cavity, and third discharge gate 19 department is provided with gate 20, and conveying channel's top and threshing cavity are through the feed opening two intercommunication of seting up, and when baffle 10 removed feed opening two, the corn-on-baffle 10 received the effect of gravity from baffle 10 landing, fall into on the stirring grid through feed opening two.

The transmission mechanism comprises a driving motor 21 fixed on a frame 54 through a bracket, a first belt wheel 22 is fixed on an output shaft of the driving motor 21, a spiral rod 2a penetrates through and is fixed with a second rotating shaft along the axial lead, two ends of the second rotating shaft are rotatably arranged between two side ends of the bucket 1 in a bearing fixing mode, one end of the second rotating shaft extends out of the bucket 1 and is fixed with a second belt wheel 23, a first transmission belt 24 is sleeved between the first belt wheel 22 and the second belt wheel 23, one end of the same side of the first rotating shaft 4 and the second belt wheel 23 extends out of the side wall of the bucket 1 and is fixed with a third belt wheel 25, a second transmission belt 26 is sleeved between the second belt wheel 23 and the third belt wheel 25, a third rotating shaft penetrates through and is fixed on the axial lead of the stirring roller 13, two ends of the third rotating shaft are rotatably arranged between two side walls of the threshing cabin 12 in a bearing fixing mode, one end of the third rotating shaft extends out of the side wall of the threshing cabin 12 and is, a third transmission belt 29 is sleeved between the first belt wheel 22 and the fourth belt wheel 27, a fourth rotating shaft is arranged and fixed on the driving roller 8 along the axial lead of the driving roller, two ends of the fourth rotating shaft are rotatably arranged between two side walls of the conveying box 6 in a bearing fixing mode, one end of the fourth rotating shaft extends out of one side wall of the conveying box 6 and is fixed with a sixth belt wheel 30, a fifth rotating shaft is arranged and fixed on the driven roller 7 along the axial lead of the driven roller 7, two ends of the fifth rotating shaft are rotatably arranged between two side walls of the conveying box 6 in a bearing fixing mode, and a fourth transmission belt 31 is sleeved between the fifth belt wheel 28 and the sixth belt wheel 30.

The cutting mechanism is arranged at the cutting edge 1a of the bucket 1, as shown in fig. 6 and 7, the cutting mechanism comprises a first cutting knife 32 with a V-shaped cross section, the first cutting knife 32 comprises an upper cut piece 32a and a lower cut piece 32b, the upper cut piece 32a and the lower cut piece 32b are crossed and fixed in a V-shaped corner, the upper cut piece 32a and the lower cut piece 32b form a V-shaped clamping edge, a first sawtooth 32c is uniformly arranged at the corner between the upper cut piece 32a and the lower cut piece 32b along the length direction, one end of the first cutting knife 32 is fixed with one side end of the bucket 1, the other end of the first cutting knife 32 is fixed with the other side end of the bucket 1, the V-shaped corner of the first cutting knife 32 is clamped into the bottom edge of the cutting edge 1a of the bucket 1, and the lower cut piece 32b is arranged below the bottom edge 1a of the bucket 1, the cutting mechanism further comprises a second cutting knife 33, the second cutting knife 33 is in a strip shape, one side of the second cutting knife 33 is provided with a second sawtooth, the second cut-off knife 33 is inserted into the V-shaped clipping opening of the first cut-off knife 32, the second cut-off knife 33 is connected with a driving mechanism which can enable the second cut-off knife 33 to move back and forth along the length direction, the second cut-off knife 33 is positioned between the bottom of the cutting opening 1a and the lower cutting piece 32b, a first limiting column 52 is fixed at the bottom of one side of the bucket 1, a second limiting column 53 is fixed at the bottom of the other side of the bucket 1, the second cut-off knife 33 is clamped in the first cut-off knife 32, the second cut-off knife 33 is prevented from being transversely separated from the first cut-off knife 32 in the back and forth movement process, and when the second cut-off knife 33 moves back and forth in the first cut-off knife 32, the second saw teeth 33a and the.

As shown in fig. 8, the driving mechanism includes a first driving lever group 34 and a second driving lever group 35, the first driving lever group 34 includes a first driving lever 34a, a second driving lever 34b and a third driving lever 34c, a side wall of one end of the first driving lever 34a is eccentrically fixed to a side wall of the first pulley 22 by a pin shaft in an axially fixed circumferential rotation manner, the other end of the first driving lever 34a has a U-shaped opening, a first pin is vertically fixed in the U-shaped opening, a first pin hole is vertically formed at one end of the second driving lever 34b, the second driving lever 34b is hinged in a manner that the first pin is inserted in the first pin hole, a second pin hole is transversely formed at the other end of the second driving lever 34b, a second pin is transversely fixed at one end of the third driving lever 34c, the third driving lever 34c is hinged to the second driving lever 34b in a manner that the second pin is inserted in the second pin hole, the second driving lever group 35 includes a first branch lever, the first branch rod 35a, the second branch rod 35b and the third branch rod 35c are fixedly connected end to end in sequence in a three-fold shape, a first hinge column 36 is vertically fixed at the free end of the first branch rod 35a, the first branch rod 35a is fixedly connected with the second branch rod 35b, a hinge hole is formed in the joint of the second branch rod 35b and the third branch rod 35c, a second hinge column 37 is vertically fixed on the side wall of the bucket 1, the second hinge column 37 is fixed with the side wall of the bucket 1 through a connecting block, the hinge hole is sleeved on the second hinge column 37 to be hinged, a third drive rod 34c is hinged with the first hinge column 36 through a pull rod 38, one end of the pull rod 38 is fixed with one end of the third drive rod 34c, the other end of the third hinge sleeve is fixed with a hinge sleeve, the hinge sleeve is sleeved on the first hinge column 36 to be hinged, a shift lever 39 is vertically fixed downwards at the free end of the third branch rod 35c, one end of the second cut knife 33 extends out of the side wall of the bucket 1 and, the bottom end of the shift lever 39 extends into the shift groove 40 a.

As shown in fig. 9, the rotary column 3 includes a first connecting rod 41, a second connecting rod 42, a third connecting rod 43, a fourth connecting rod 44, a fifth connecting rod 45, a first side plate 46 and a second side plate 47, the first side plate 46 and the second side plate 47 are hollow pentagons, two ends of the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, the fourth connecting rod 44 and the fifth connecting rod 45 are respectively fixed to the side surfaces of the first side plate 46 and the second side plate 47, so that the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, the fourth connecting rod 44 and the fifth connecting rod 45 form five edges of the rotary column 3, a plurality of material-pulling rods 5 are fixed to the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, the fourth connecting rod 44 and the fifth connecting rod 45 along the length direction thereof, the plurality of material-pulling rods 5 are fixed radially outward, and two ends of.

The stirring grid comprises a plurality of stirring columns 15a, the stirring columns 15a are fixedly arranged along a semicircular track by utilizing a plurality of arc-shaped retainers 15b, the retainers 15b are fixed with the inner wall of the threshing cabin 12, one ends of the stirring columns 15a are abutted against one side wall of the threshing cabin 12, and the other ends of the stirring columns 15a are abutted against the other side wall of the threshing cabin 12.

A through groove penetrating through the top surface and the bottom surface of the conveying belt 9 is transversely formed in the conveying belt 9, as shown in fig. 5, a plate seat 48 penetrates through the bottom surface of the conveying belt 9 from the through groove to the top surface and is fixed on the bottom surface, the plate seat 48 comprises a back plate 48a and an inserting plate 48b, the inserting plate 48b is vertically fixed with the back plate 48a, a slot is formed in the top end of the inserting plate 48b, the back plate 48a abuts against the bottom surface of the conveying belt 9, the inserting plate 48b extends out from the through groove to the top surface of the conveying belt 9, the partition plate 10 is inserted into the slot.

The top of the conveying box 6 is provided with an access opening 50.

The first belt wheel 22 comprises a first positive wheel 22a and a first secondary wheel 22b which are coaxially fixed, the second belt wheel 23 comprises a second positive wheel 23a and a second secondary wheel 23b, the first transmission belt 24 is sleeved between the first secondary wheel 22b and the second secondary wheel 23b, the second transmission belt 26 is sleeved between the second positive wheel 23a and the third belt wheel 25, and the third transmission belt 29 is sleeved between the first positive wheel 22a and the fourth belt wheel 27.

Reinforcing ribs 51 are fixed to both side walls of the bucket 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the figures, 1, bucket; 1a, a shovel port; 2. a helical impeller; 2a, a screw rod; 2b, helical blades; 3. rotating the column; 4. a first rotating shaft; 5. a material poking rod; 6. a delivery box; 7. a driven roller; 8. an active roller; 9. a conveyor belt; 10. a partition plate; 11. a material port I; 12. a threshing cabin; 13. a stirring roller; 14. a stirring rod; 15a, a stirring column; 15b, a retainer; 16. a first discharge port; 17. a second discharge port; 18. a fan; 19. a third discharge port; 20. a gate; 21. a drive motor; 22. a first belt wheel; 22a, a first positive wheel; 22b, a first auxiliary wheel; 23. a second belt wheel; 23a, a second front wheel; 23b, a second auxiliary wheel; 24. a first transmission belt; 25. a third belt wheel; 26. a second transmission belt; 27. a belt wheel IV; 28. a fifth belt wheel; 29. a third transmission belt; 30. a sixth belt wheel; 31. a fourth transmission belt; 32. a first cutter; 32a, an upper cut piece; 32b, a lower cut piece; 32c, a first sawtooth; 33. a second cutter; 33a, a second serration; 34. a first drive rod group; 34a, a first driving rod; 34b, a second driving rod; 34c, a driving rod III; 35. a second drive rod group; 35a, a first branch rod; 35b, a second branch rod; 35c, dividing the rods into three; 36. a first hinge column; 37. a second hinge post; 38. a pull rod; 39. a deflector rod; 40. shifting blocks; 40a, a shifting groove; 41. a first connecting rod; 42. a second connecting rod; 43. a third connecting rod; 44. a connecting rod IV; 45. a fifth connecting rod; 46. a first side plate; 47. a second side plate; 48. a plate base; 48a, a back plate; 48b, inserting plates; 49. riveting; 50. an access hole; 51. reinforcing ribs; 52. a first limiting column; 53. a second limiting column; 54. racks, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A corn thresher comprises a frame (54), and is characterized in that the corn thresher comprises a spiral feeding mechanism, a conveyor belt feeding mechanism, a rotary threshing mechanism and a transmission mechanism;

the spiral feeding mechanism comprises a bucket (1), the bucket (1) is provided with a shovel opening (1a), the bucket (1) is provided with a semi-open bucket cavity, a spiral impeller (2) is rotationally arranged in the bucket cavity, the spiral impeller (2) comprises a spiral rod (2a) and spiral blades (2b), the spiral rod (2a) is horizontally arranged between two side ends of the bucket (1) in an axially fixed and circumferentially rotating mode, the front side of the spiral impeller (2) is also provided with a material stirring mechanism, the material stirring mechanism comprises a pentagonal prism-shaped rotating column (3), a first rotating shaft (4) is arranged at the center of the rotating column (3) in a penetrating way and is fixed, the first rotating shaft (4) is fixed between the two side ends of the bucket (1) in an axial fixed circumferential rotating way, a plurality of material poking rods (5) are fixed on each edge of the rotating column (3) along the length direction, the screw rod (2a) and the first rotating shaft (4) are connected with the transmission mechanism;

the conveying belt feeding mechanism comprises a conveying box (6) which is obliquely arranged and is in a rectangular shape, a conveying channel is arranged in the conveying box (6) along the length direction, a driven roller (7) is arranged at the bottom end of the conveying channel, a driving roller (8) is arranged at the top end of the conveying channel, a conveying belt (9) is sleeved between the driving roller (8) and the driven roller (7), a plurality of partition plates (10) which are perpendicular to the surface of the conveying belt (9) are fixed on the conveying belt (9), the plurality of partition plates (10) are evenly distributed along the length direction of the conveying belt (9) in the circumferential direction, the bottom end of the conveying box (6) is connected with one side end of the bucket (1), the bottom end of the conveying channel is communicated with a bucket cavity of the bucket (1) through a first material opening (11), and the driving roller (8) is;

the rotary threshing mechanism comprises a threshing cabin (12) fixed on a rack (54), the threshing cabin (12) is provided with an inner cavity, the upper part of the inner cavity is a threshing cavity, the lower part of the inner cavity is a separation cavity communicated with the threshing cavity, a stirring roller (13) is horizontally arranged in the threshing cavity, the outer cylindrical surface of the stirring roller (13) is uniformly distributed with stirring rods (14) along the circumferential direction and the axial direction, a cambered stirring grid is fixed in the threshing cavity, one end of each stirring rod (14) is fixed with the outer cylindrical surface of the stirring roller (13), the other end of each stirring rod is close to the stirring grid, the stirring roller (13) is connected with a transmission mechanism, the bottom end of the threshing cabin (12) is provided with a first discharge port (16) communicated with the inside and outside of the separation cavity, the outer side wall of the threshing cabin (12) is provided with a second discharge port (17) communicated with the separation cavity, one side of the threshing cabin (12), an air channel is formed between the fan (18) and the second discharge hole (17), a third discharge hole (19) communicated with the inside and the outside of the threshing cavity is formed in the side wall of the top of the threshing cabin (12), a gate (20) is arranged at the third discharge hole (19), and the top end of the conveying channel is communicated with the threshing cavity through a second opening formed in the threshing cavity.

2. The corn thresher according to claim 1, wherein the transmission mechanism comprises a driving motor (21) fixed on a frame (54) through a bracket, a first belt wheel (22) is fixed on an output shaft of the driving motor (21), a second rotating shaft is arranged and fixed on the spiral rod (2a) along the axial line of the spiral rod in a penetrating manner, the second rotating shaft is rotatably arranged between two side ends of the bucket (1), one end of the second rotating shaft extends out of the bucket (1) and is fixed with a second belt wheel (23), a first transmission belt (24) is sleeved between the first belt wheel (22) and the second belt wheel (23), one end of the first rotating shaft (4) at the same side with the second belt wheel (23) extends out of the side wall of the bucket (1) and is fixed with a third belt wheel (25), a second transmission belt (26) is sleeved between the second belt wheel (23) and the third belt wheel (25), and a third rotating shaft is arranged and fixed on the stirring roller (13) along the, the third rotating shaft is rotatably arranged between two side walls of the threshing cabin (12), one end of the third rotating shaft extends out of the side wall of the threshing cabin (12) and is fixed with a fourth belt wheel (27), the other end of the third rotating shaft extends out of the other side wall of the threshing cabin (12) and is fixed with a fifth belt wheel (28), a third transmission belt (29) is sleeved between the first belt wheel (22) and the fourth belt wheel (27), the driving roller (8) is provided with a fourth rotating shaft which is arranged between two side walls of the conveying box (6) in a penetrating way and fixed along the axial lead, one end of the fourth rotating shaft extends out of one side wall of the conveying box (6) and is fixed with a sixth belt wheel (30), the driven roller (7) is provided with a fifth rotating shaft in a penetrating way and is fixed along the axial lead of the driven roller, the fifth rotating shaft is rotatably arranged between two side walls of the conveying box (6), and a driving belt IV (31) is sleeved between the belt wheel V (28) and the belt wheel VI (30).

3. The corn thresher according to claim 2 or 1, wherein the shovel port (1a) of the bucket (1) is provided with a cutting mechanism, the cutting mechanism comprises a first cutter (32) with a V-shaped cross section, the first cutter (32) comprises an upper cut piece (32a) and a lower cut piece (32b), the upper cut piece (32a) and the lower cut piece (32b) are fixed in a V-shaped included angle, the upper cut piece (32a) and the lower cut piece (32b) form a V-shaped included port, the included angle between the upper cut piece (32a) and the lower cut piece (32b) is uniformly provided with first saw teeth (32c) along the length direction, one end of the first cutter (32) is fixed with one side end of the bucket (1), the other end of the first cutter (32) is fixed with the other side end of the bucket (1), so that the V-shaped included port of the first cutter (32) is clamped into the bottom edge of the shovel port (1a) of the bucket (1), and make cut-parts (32b) are in shovel mouth (1a) bottom below of scraper bowl (1), cutting mechanism still includes second cut-off knife (33), and second cut-off knife (33) are rectangular form, and second sawtooth (33a) have been seted up along its length direction to one side of second cut-off knife (33), and second cut-off knife (33) insert in the V clamp mouth of first cut-off knife (32), second cut-off knife (33) are connected with a actuating mechanism that enables its round trip movement along length direction, and when second cut-off knife (33) round trip movement in first cut-off knife (32), second sawtooth (33a) and first sawtooth (32c) relative movement do the shearing action.

4. The corn thresher according to claim 3, wherein the driving mechanism comprises a first driving rod group (34) and a second driving rod group (35), the first driving rod group (34) comprises a first driving rod (34a), a second driving rod (34b) and a third driving rod (34c), one end side wall of the first driving rod (34a) is eccentrically fixed with the side wall of the first belt wheel (22) in an axially fixed circumferential rotation mode, the other end of the first driving rod (34a) is provided with a U-shaped opening, a first pin column is vertically fixed in the U-shaped opening, one end of the second driving rod (34b) is vertically provided with a first pin hole, the second driving rod (34b) is hinged in a mode that the first pin column penetrates through the first pin hole, the other end of the second driving rod (34b) is transversely provided with a second pin hole, one end of the third driving rod (34c) is transversely fixed with a second pin column, and the third driving rod (34c) is hinged with the second pin column (34b) in a mode that the second pin column is inserted in the, the second driving rod group (35) comprises a first branch rod (35a), a second branch rod (35b) and a third branch rod (35c), the first branch rod (35a), the second branch rod (35b) and the third branch rod (35c) are sequentially and fixedly connected in a three-fold shape from head to tail, a first hinge column (36) is vertically fixed at the free end of the first branch rod (35a), a hinge hole is formed in the joint of the second branch rod (35b) and the third branch rod (35c), a second hinge column (37) is vertically fixed on the side wall of the bucket (1), the hinge hole is sleeved on the second hinge column (37) in a hinged mode, the third driving rod (34c) is hinged with the first hinge column (36) through a pull rod (38), one end of the pull rod (38) is fixed with one end of the third driving rod (34c), a hinge sleeve is fixed at the other end of the first hinge column (36) in a hinged mode, and a shift lever (39) is vertically fixed downwards at the free end of the third branch rod (35c), one end of the second cut-off knife (33) extends out of the side wall of the bucket (1) and is fixedly provided with a shifting block (40), the top of the shifting block (40) is provided with a shifting groove (40a), and the bottom end of the shifting rod (39) extends into the shifting groove (40 a).

5. The corn thresher according to claim 1, wherein the rotating column (3) comprises a first connecting rod (41), a second connecting rod (42), a third connecting rod (43), a fourth connecting rod (44), a fifth connecting rod (45), a first side plate (46) and a second side plate (47), the first side plate (46) and the second side plate (47) are hollow pentagons, two ends of the first connecting rod (41), the second connecting rod (42), the third connecting rod (43), the fourth connecting rod (44) and the fifth connecting rod (45) are respectively fixed with the side surfaces of the first side plate (46) and the second side plate (47), so that the first connecting rod (41), the second connecting rod (42), the third connecting rod (43), the fourth connecting rod (44) and the fifth connecting rod (45) form five edges of the rotating column (3), and a plurality of material poking rods (5) are fixed on the first connecting rod (41), the second connecting rod (42), the third connecting rod (43), the fourth connecting rod (44) and the fifth connecting rod (45) along the length direction, and two ends of the first rotating shaft (4) are respectively fixed with the centers of the first side plate (46) and the second side plate (47).

6. The corn thresher according to claim 1, wherein the stirring grid comprises a plurality of stirring columns (15a), the plurality of stirring columns (15a) are fixedly arranged along a semicircular track by using a plurality of arc-shaped retainers (15b), the retainers (15b) are fixed with the inner wall of the threshing cabin (12), one end of each stirring column (15a) abuts against one side wall of the threshing cabin (12), and the other end of each stirring column (15a) abuts against the other side wall of the threshing cabin (12).

7. The corn thresher according to claim 1, wherein a through groove penetrating through the top surface and the bottom surface of the conveying belt (9) is transversely formed in the conveying belt (9), a plate seat (48) penetrates through the through groove from the bottom surface of the conveying belt (9) to the top surface and is fixed to the top surface, the plate seat (48) comprises a back plate (48a) and an insertion plate (48b), the insertion plate (48b) is vertically fixed to the back plate (48a), the top end of the insertion plate (48b) is provided with a slot, the back plate (48a) abuts against the bottom surface of the conveying belt (9), the insertion plate (48b) extends out of the through groove to the top surface of the conveying belt (9), the partition plate (10) is inserted into the slot, and the back plate (48a) is fixed to the conveying belt (9) through a rivet (49).

8. The corn thresher of claim 1, wherein the top of the conveying box (6) is provided with an access opening (50).

9. The corn thresher according to claim 2, wherein the first belt wheel (22) comprises a first primary wheel (22a) and a first secondary wheel (22b) which are coaxially fixed, the second belt wheel (23) comprises a second primary wheel (23a) and a second secondary wheel (23b), the first transmission belt (24) is sleeved between the first secondary wheel (22b) and the second secondary wheel (23b), the second transmission belt (26) is sleeved between the second primary wheel (23a) and the third belt wheel (25), and the third transmission belt (29) is sleeved between the first primary wheel (22a) and the fourth belt wheel (27).

10. The corn thresher of claim 1, wherein reinforcing ribs (51) are fixed to two side walls of the bucket (1).