CN109328664B - Soybean thresher - Google Patents
Soybean thresher Download PDFInfo
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- CN109328664B CN109328664B CN201811229515.3A CN201811229515A CN109328664B CN 109328664 B CN109328664 B CN 109328664B CN 201811229515 A CN201811229515 A CN 201811229515A CN 109328664 B CN109328664 B CN 109328664B
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- threshing
- feeding
- feeding port
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- 244000068988 Glycine max Species 0.000 title claims abstract description 38
- 235000010469 Glycine max Nutrition 0.000 title claims abstract description 36
- 241000251169 Alopias vulpinus Species 0.000 title claims description 4
- 239000010902 straw Substances 0.000 claims abstract description 43
- 239000012535 impurity Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 8
- 230000007306 turnover Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- 235000013339 cereals Nutrition 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 4
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F11/00—Threshing apparatus specially adapted for maize; Threshing apparatus specially adapted for particular crops other than cereals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/10—Feeders
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/44—Grain cleaners; Grain separators
- A01F12/446—Sieving means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/46—Mechanical grain conveyors
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/56—Driving mechanisms for the threshing parts
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Threshing Machine Elements (AREA)
Abstract
The invention relates to a soybean threshing machine, and belongs to the technical field of agricultural machinery. The machine comprises a feeding threshing device, an air duct and a transmission case which are arranged at the upper part of a frame; the feeding threshing device comprises a threshing cylinder supported on a blanking hopper fixedly connected with the frame, one end of a feeding port component of a cover above the threshing cylinder is provided with a feeding port, and the other end of the feeding port component is fixedly connected with a straw outlet component; the lower end of the guide plate of the air duct is communicated with the vertical flow channel, and the lower end of the vertical flow channel is a seed outlet; an upper guide plate forming a bifurcation runner is arranged above the vertical runner; the upper end of the bifurcation runner is communicated with the impurity-falling runner; the transmission case is provided with a fan and a motor for respectively driving the threshing cylinder and the fan, and the air suction opening of the fan is communicated with the outlet of the impurity dropping runner through an adjustable air door. The threshing machine can finish threshing operation for effectively separating impurities at one time. And the negative pressure is regulated through the air door, so that the cleanliness of seeds of different varieties of soybeans after threshing can be ensured, and the threshing quality is ensured.
Description
Technical Field
The invention relates to threshing equipment, in particular to a soybean threshing machine, and belongs to the technical field of agricultural machinery.
Background
Soybean breeding is a significant agricultural system engineering, and soybean harvesting is one of the most critical links of breeding work. The applicant knows that district breeding harvesting mainly takes the sectional harvesting mode of manual harvesting, threshing by a common threshing machine and cleaning by a cleaning machine as the main mode, and widely used soybean threshing machines only optimally match threshing cylinder parameters of the soybean threshing machines on the basis of wheat and rice threshing machines. When the threshing machine is used for threshing and separating soybeans, the problems of poor adaptability, serious impurity content and more broken soybeans exist.
The search shows that the Chinese patent document with the application number of 201611072641.3 discloses a brush type soybean threshing machine with a bow-tooth roller, which mainly comprises a suction fan, a bow-tooth roller, a hood, a feeding port, a belt pulley, a vibrating screen, a frame, a collecting port, a suspender mechanism, a discharging port, an air inlet and an air outlet, wherein soybean is fed by a material feeding port, then enters a threshing section, threshing bow teeth are spirally arranged, and straw rotates along with the roller under the action of the bow teeth and moves along the axial direction at the same time, and soybean seeds are removed under the action of brushing, impacting and concave plate screening of the bow teeth; soybean seeds fall on the vibrating screen through the concave plate screen, and crushed straws are discharged out of the machine through the discharge port; separating soybean seeds and impurities under the action of a vibrating screen and a fan; the soybean seeds are collected at the end of the vibrating screen. The bow-tooth roller comb-brush type soybean threshing machine has the advantages of higher working efficiency, simple structure and the like, but the blower blowing type cleaning has high difficulty in wind power control and poor cleaning effect; moreover, because the metal structure is used for threshing, the threshing machine has larger impact on crops such as soybean which are easy to crack, the soybean is easy to break, threshing gaps are fixed, and the adaptability is poor.
Disclosure of Invention
The invention aims at: aiming at the defects existing in the prior art, the soybean threshing machine with ideal cleaning effect and strong adaptability is provided, so that the threshing operation effect is obviously improved.
In order to achieve the above purpose, the basic technical scheme of the soybean threshing machine of the invention is as follows: comprises a feeding threshing device arranged at the upper part of a frame, an air duct with the upper end connected with the bottom of the feeding threshing device, and a transmission box positioned at one side of the feeding threshing device and the air duct; the feeding threshing device comprises a threshing cylinder supported on a blanking hopper fixedly connected with a frame, and a feeding port component hinged on the blanking hopper through a horizontal hinged shaft is covered above the threshing cylinder; one end of the feeding port component is provided with a feeding port facing forward and upward, and the other end of the feeding port component is fixedly connected with a straw outlet component with a straw outlet facing backward through a communication port;
the air duct comprises a guide plate in an inverted splayed shape, the lower end of the guide plate is communicated with the vertical flow channel, and the lower end of the vertical flow channel is a seed outlet; an upper guide plate which forms a branched flow passage inclined towards the upper side with a side guide plate is arranged above the vertical flow passage; the upper end of the bifurcation runner is communicated with a impurity falling runner which is inclined towards the lower side; the transmission case is provided with a fan and a motor for respectively driving the threshing cylinder and the fan through a transmission mechanism, and an exhaust port of the fan is communicated with an outlet of the impurity falling runner through an adjustable air door.
During threshing operation, crop to be threshed is fed by a feeding threshing device, and crop straws threshed by a threshing cylinder are discharged by a straw outlet; the seeds, the fine straws and the trash can fall down through the sieve holes of the concave plate sieve of the threshing cylinder and slide down to an air duct forming negative pressure under the action of a fan. The soybeans directly fall from the grain outlet of the vertical runner under the action of gravity because of heavier grains; the fine straw and the impurity are sucked into the branch flow passage under the action of negative pressure due to lighter weight and are discharged from the impurity falling flow passage, so that threshing operation for effectively separating the impurity at one time is completed. And the negative pressure can be regulated through the air door, so that the cleanliness of the seeds of different varieties of soybeans after threshing can be ensured and the threshing quality can be ensured only by proper regulation.
Further, the middle part of the outer side of the upper guide plate is connected with an arc-shaped coaming which firstly horizontally extends and then bypasses the fan outline and then sags, the middle part of the horizontal section of the arc-shaped coaming extends out of the splitter plate towards the side lower part, and the splitter plate and a baffle plate bent towards the side lower part at the upper end of one side of the guide plate form a sundry falling runner which inclines towards the side lower part.
Further, the adjustable air door consists of a round notch-shaped air door baffle plate which is blocked at a semicircular exhaust opening of the fan and a transmission mechanism consisting of a gear, a rack and a gear shaft; the outer ring of the air door baffle is in a zigzag shape meshed with the gear and hinged at the exhaust port; the gear is meshed with a rack capable of being horizontally pulled.
Furthermore, a clamping beam is arranged below the feeding port of the feeding port component, a turnover locking mechanism is hinged at a position, corresponding to the lower position of the clamping beam, of the blanking hopper, and a straw discharging mechanism is hinged at a position corresponding to the communication port; the turnover locking mechanism mainly comprises a locking shaft with a bending handle and a radially extending hook head card on the locking shaft; when the hook head of the hooked card rotates away from the position above the clamping beam, the feeding port component can be lifted up around a horizontal hinged support shaft; when the hook head of the hooked card rotates to a position above the clamping beam, the feeding port component is locked at the cover position; the straw discharging mechanism consists of a rotating shaft with a bent handle and a baffle fixedly connected with the rotating shaft and controlling the opening and closing of a straw outlet.
Further, one surface of the air duct is provided with a glass plate which is pressed and fixed by a fixing device.
Further, the left arc plate and the right arc plate are respectively matched with the two ends of the threshing cylinder to form a clamping cover connection.
Further, the left arc plate and the right arc plate are fixedly connected with the semicircle concave of the left side plate and the right side plate respectively, the upper ends of the left side plate and the right side plate are fixedly connected with the two sides of the top plate and the lower bottom plate respectively, a feeding port with one end facing forward and upwards and a communication port with the other end are formed, and the feeding port is fixedly connected with a straw outlet component with a backward straw outlet.
Further, the threshing cylinder comprises a circular arc section concave plate sieve fixedly connected between the lower parts of the left fixed circular cover and the right fixed circular cover and a rotatable threshing cylinder supported between the left fixed circular cover and the right fixed circular cover, the threshing cylinder mainly comprises main body plates distributed in a regular triangle shape around a rotation center, one side of the plate surface of the main body plates is provided with plate eaves extending out of corresponding triangular peaks at intervals in the axial direction, the plate eaves is fixedly provided with a continuously extending rubber plate through a fastener, and the rubber plate is provided with long slot holes corresponding to the perforations; the thickness of the rubber plate is 8-10mm, the hardness is 70+/-5 HA, and the extension length is 30-52 mm.
Further, the ratio of the extending length of the rubber plate to the difference between the clamping lengths of the plate eave and the clamping eave is 1:0.4-0.6.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic perspective view of the embodiment of fig. 1 with the door opened from another view.
Fig. 3 is a schematic perspective view of the air duct of the embodiment of fig. 1.
FIG. 4 is a schematic diagram of the embodiment of FIG. 1.
Fig. 5 is a schematic perspective view of the feeding threshing device of the embodiment of fig. 1.
Fig. 6 is a perspective view of another perspective view of the feeding threshing device of the embodiment of fig. 1.
Fig. 7 is a schematic perspective exploded view of the feeding port member of fig. 5.
Fig. 8 is a schematic perspective view of the feeding port member of fig. 5.
Fig. 9 is a schematic perspective view of the straw discharging mechanism in fig. 5.
Fig. 10 is a schematic perspective view of the flip-lock mechanism of fig. 5.
Fig. 11 is a schematic view showing a hinged perspective structure of the feeding port member of fig. 5.
Fig. 12 is a schematic view of the hinge locking block of fig. 11.
Fig. 13 is a schematic perspective view of the threshing cylinder in the embodiment of fig. 1.
Fig. 14 is a schematic perspective view of a threshing cylinder of the threshing cylinder of fig. 13.
Detailed Description
Example 1
The basic structure of the soybean threshing machine in this embodiment is shown in fig. 1, a feeding threshing device W1 is arranged at the left upper part of a frame J3, a blanking hopper 1 at the bottom of the feeding threshing device W1 is connected with the upper end of an air duct F6, and one side of the feeding threshing device W1 and one side of the air duct F6 are a transmission case C2 arranged on the frame J3.
As shown in fig. 2, a fan C7 and a motor C10 are installed in the transmission case C2, and the motor C10 is directly connected with the fan C7 in a transmission manner through a belt C9, and is connected with the threshing cylinder in a transmission manner through a transmission belt wheel C11 and a speed regulation belt wheel C12. And the exhaust port of the fan C7 is communicated with the outlet of the impurity falling runner F6-8 of the air duct F6 through an adjustable air door C8.
The specific structure of the air duct F6 is shown in FIG. 3, and comprises a guide plate F6-3 which is fixed on a side mounting plate F6-5 and is in an inverted splayed shape, wherein the lower end of the guide plate F6-3 is communicated with a vertical flow channel F6-2, and the lower end of the vertical flow channel F6-2 is a seed outlet F6-1. An upper guide plate F6-4 forming a branched flow passage F6-9 inclined toward the upper side with the side guide plate F6-3 is arranged above the vertical flow passage F6-3. The middle part of the outer side of the upper guide plate F6-4 is connected with an arc-shaped coaming F6-6 which firstly horizontally extends and then bypasses the fan outline and then sags, the middle part of the horizontal section of the arc-shaped coaming F6-6 extends out of a splitter plate F6-7 towards the side lower part, the splitter plate F6-7 and a baffle plate F6-10 which is bent towards the side lower part at the upper end of a side guide plate F6-3 form a sundry dropping flow channel F6-8 which is inclined towards the side lower part, and the upper end of a bifurcation flow channel F6-9 is communicated with the sundry dropping flow channel F6-8. Thus, a vertical straight-through a channel for outputting soybean seeds and an inverted V-shaped bent b channel which is branched from the upper end of the a channel and is used for separating impurities such as fine straws and the like are formed.
As shown in FIG. 4, the adjustable air door C8 mainly comprises a circular notch-shaped air door baffle C8-1, a gear C8-2, a rack C8-3, a gear shaft C8-4 and the like, which are shielded at a semicircular exhaust opening of the fan. The outer ring of the damper baffle C8-1 is in a sawtooth shape meshed with a gear C8-2, and is hinged at the exhaust port, and the gear C8-2 is meshed with a rack C8-3 which can be horizontally pulled. When the rack C8-3 is pulled, the gear C8-2 is driven to rotate around the gear shaft C8-4, and then the air door baffle C8-1 is driven to rotate, so that the state of shielding the exhaust opening is changed, and the purpose of adjusting the negative pressure of the fan in the air duct is achieved.
The specific structure of the feeding threshing device W1 is shown in figures 5 and 6, the threshing cylinder 3 is supported on the blanking hopper 1 fixedly connected with the frame J3, a feeding port component 5 hinged on the blanking hopper 1 through horizontal hinge shafts 10 on two sides is covered above the threshing cylinder 3, the hinged specific structure is shown in figures 11 and 12, two sides of the feeding port component 5 are respectively fixedly connected with corners of an L-shaped locking block 8 through fasteners, and a through hole at one end of the locking block 8 is hinged with an upward extending mounting block 1-1 of a cross beam 1-2 fixed on the blanking hopper 1 through the horizontal hinge shafts 10.
The specific structure of the feeding port component 5 is shown in fig. 7 and 8, a front fixed cross beam 5-9 and a rear fixed cross beam 5-1 positioned at two ends are respectively fixedly connected with a left arc plate 5-2 and a right arc plate 5-8 at two sides to form a frame, the left arc plate 5-2 and the right arc plate 5-8 are respectively fixedly connected with the lower ends of a left side plate 5-3 and a right side plate 5-5 with semicircular recesses, the upper ends of the left side plate 5-3 and the right side plate 5-5 are respectively fixedly connected with two sides of a top plate 5-4 and a bottom plate 5-6 to form a feeding port with one end facing forwards and a communication port with the other end, and the feeding port is fixedly connected with a straw outlet component 4 with a backward straw outlet through the communication ports. The left arc plate 5-2 and the right arc plate 5-8 are respectively matched with the two ends of the threshing cylinder 3 to form a clamping cover connection. A clamping cross beam 5-7 positioned below the feeding port is also fixed between the left side plate 5-3 and the right side plate 5-5 and adjacent to the front fixed cross beam 5-9. One side of the clamping beam 5-7 is fixedly provided with a position sensor 7 for detecting the in-place position of the hooked card 2-1, and the signal output end of the position sensor 7 is connected with the controlled end of the driving motor of the threshing cylinder 3 through a control circuit. The straw outlet part 4 consists of a side plate, a top cover plate, a bottom plate and the like, and forms a square three-dimensional hole for guiding straw discharge.
The blanking hopper 1 is hinged with a turnover locking mechanism 2 at the position corresponding to the lower part of the clamping cross beam 5-7, and a straw discharging mechanism 6 is hinged at the position corresponding to the communication port. As shown in FIG. 9, the straw discharging mechanism 6 consists of a baffle plate 6-1 for controlling the opening and closing of a straw outlet, two crescent-shaped connecting plates 6-2, two fixed clamping blocks 6-3 and a rotating shaft 6-4 with a bent handle, wherein one end of each crescent-shaped connecting plate 6-2 is fixed on the baffle plate 6-1 by a fastener, the other end of each crescent-shaped connecting plate is fixed on the rotating shaft 6-4, and each fixed clamping block 6-3 is connected on the corresponding rotating shaft 6-4 and is connected and installed on a rear fixed transverse shaft 5-1 of the feeding port part 5 by the fastener.
As shown in fig. 10, the flip lock mechanism 2 mainly includes a lock shaft 2-2 with a bent handle and a radially extending hook head 7-shaped card 2-1 on the lock shaft. When the hook head of the hooked card 2-1 rotates away from the position above the clamping beam 5-7, the feeding port component 5 and the straw outlet component 4 fixedly connected with the feeding port component can be lifted around the horizontal hinge support shaft 10, and when the feeding port component is in a limiting position, the locking block 8 is abutted against the beam 1-2 by a fastener at one end far away from the hinge support shaft 10. When the hook of the hooked card 2-1 is turned to a position above the click beam 5-7, the feeding port member 5 is locked in the cap position.
The specific structure of the threshing cylinder 3 is shown in figure 13, the left and right annular fixed circular covers 3-1 and 3-4 are fixedly connected through a cross beam 3-10, and a concave screen 3-9 with an arc section is fixed between the lower parts of the two. The rotatable threshing roller 3-3 is supported between the left and right fixed circular covers 3-1 and 3-4 through a rotating shaft 3-5 of the rotating center, and the outer end of the rotating shaft 3-5 is fixedly connected with a driving belt wheel 3-7 of power input. 3-6 are bearings supporting the rotating shaft 3-5.
The threshing roller 3-3 has a specific structure shown in FIG. 14, and is formed by welding a main body plate 3-3-2 distributed in a regular triangle shape around a rotation center and two end plates of the regular triangle shape. One side of the plate surface of the main body plate 3-3-2 extends out of the corresponding triangular vertex to form plate eaves with axially spaced perforations, the other side is bent into a clamping eave 3-3-3 which is opposite to the adjacent plate eave and also provided with axially spaced perforations, and the plate eave and the clamping eave 3-3 are clamped and fixedly mounted through a fastener to form a rubber plate 3-3-1 which continuously extends.
The rubber sheet 3-3-1 is a key element for realizing the ideal threshing effect, is too hard or too soft, HAs high breaking rate or poor threshing effect, and HAs flexibility related to factors such as hardness, thickness, extension length (namely L2 in figure 12) and the like, so that the applicant HAs conducted intensive studies and repeated experiments to finally determine that the ideal rubber sheet HAs a thickness of 9 (+ -1) mm, a hardness of 70 (+ -5) HA and an extension length ranging from 30mm to 52mm (adjustable according to soybean varieties, working conditions and the like). And in the test: the threshing effect is more ideal when the ratio of the extending length L2 of the rubber plate to the clamping length difference L1 of the plate eave and the clamping eave is 1:0.4-0.6, and the applicant finds out that the threshing rolling rotation direction is that the clamping eave is in front and behind the plate eave, and the clamping eave is lower than the plate eave, so that the deformation is small when the rubber plate starts to touch soybean plants, the sufficient beating threshing acting force is provided, the higher deformed super-position rebound is generated immediately, and the brushing threshing effect is continuously generated in the high-speed rotation process of the threshing roller, so that the threshing effect is effectively enhanced.
In addition, one surface of the air duct F6 of the embodiment is provided with a glass plate B5 which is pressed and fixed by four fixing devices 4, so that the separation condition of materials in the air duct can be conveniently observed, and corresponding adjustment can be conveniently carried out in time.
Before the operation of the threshing machine of the embodiment starts, the feeding part is turned downwards, so that the clamping cross beam of the feeding part is clamped under the 7-shaped card to be positioned, the position sensor detects a in-place signal, the threshing machine can be started normally, and the safety of manual feeding is ensured. Then the crop to be threshed is fed by a feeding port of a feeding threshing device, the threshing cylinder rotates to start threshing operation, soybean plants to be threshed entering a feeding port component are rolled into the threshing cylinder to be beaten and threshed, when the threshing cylinder rotates to thresh for 5-10 seconds, a handle of a straw discharging mechanism is broken off, the straw discharging mechanism is opened, namely a straw outlet component is opened, the straw after seed grain removal and the larger impurity are thrown out of the straw outlet component under the action of the circumferential motion of the threshing cylinder, the soybean seed grain and the smaller impurity are leaked from sieve holes of a concave plate sieve of the threshing cylinder, and enter an air duct from a blanking hopper. In the process, if faults such as straw blockage and the like are found, the feeding device can be manually rotated to turn over the locking mechanism, so that the feeding port component is lifted and automatically stopped, and the faults are removed and the straws and the impurities in the threshing cylinder are cleaned conveniently.
The seeds, the fine straws and the miscellaneous surplus which are leaked through the sieve holes of the concave plate sieve enter an upper guide plate of an air duct to slide down, the soybean seeds fall down under the action of gravity through a to fall into a subsequent seed collecting box due to heavier seeds, the air duct forms negative pressure under the action of a fan, and the fine straws and the miscellaneous surplus are sucked into b air duct to be discharged into the subsequent miscellaneous collecting box due to light weight under the action of internal and external air pressure difference, so that the threshing machine completes one-time threshing and separating operation.
As the opening size of the air suction opening directly influences the pressure difference between the inside and the outside of the air duct when the fan works, before threshing operation is carried out on soybeans of different varieties, the cleanliness of collected seeds is observed, the size of the air outlet of the adjustable air door is adjusted pertinently, and when the impurity content of seeds is higher, the air suction opening is properly adjusted to be larger, so that the pressure difference between the inside and the outside of the air duct is improved.
Practices show that compared with the prior art, the soybean threshing machine of the embodiment has the following remarkable advantages:
1) The negative pressure type cleaning of the fan is adopted, so that the straws and the impurities flow out of the air duct in time, and the cleaning effect is good;
2) The air quantity and threshing gap can be adjusted according to the sizes of soybean seeds and pods of different varieties, and the adaptability is high;
3) The rubber threshing plate of the plate threshing cylinder ensures the threshing efficiency and obviously reduces the breaking rate in the threshing process;
4) The straw discharging mechanism is convenient for reasonably controlling the effective threshing time, ensures that the soybean pods are fully threshed, and greatly reduces the unhairing rate;
5) The turnover lifting structure of the feeding port component greatly facilitates the treatment of faults such as straw blockage and the like.
Claims (3)
1. A soybean threshing machine, which is characterized in that: comprises a feeding threshing device (W1) arranged at the upper part of a frame (J3), an air duct (F6) with the upper end connected with the bottom of the feeding threshing device, and a transmission box (C2) positioned at one side of the feeding threshing device and the air duct; the feeding threshing device comprises a threshing cylinder (3) supported on a blanking hopper (1) fixedly connected with a frame, and a feeding inlet part (5) hinged on the blanking hopper through a horizontal hinge shaft (10) is covered on the upper part of the threshing cylinder; one end of the feeding port component is provided with a feeding port facing forward and upward, and the other end of the feeding port component is fixedly connected with a straw outlet component (4) with a straw outlet facing backward through a communication port; the air duct comprises a guide plate (F6-3) which is in an inverted splayed shape, the lower end of the guide plate is communicated with a vertical flow channel (F6-2), and the lower end of the vertical flow channel is a grain outlet (F6-1); an upper guide plate (F6-4) which forms a branched flow passage (F6-9) inclined towards the upper side with a side guide plate is arranged above the vertical flow passage; the upper end of the bifurcation runner is communicated with a impurity falling runner (F6-8) which is inclined towards the lower side; the transmission case is provided with a fan (C7) and a motor (C10) for respectively driving the threshing cylinder and the fan through a transmission mechanism, and an exhaust port of the fan is communicated with an outlet of the impurity falling runner through an adjustable air door (C8); the middle part of the outer side of the upper guide plate is connected with an arc-shaped coaming which firstly horizontally extends and then bypasses the fan outline and then sags, the middle part of the horizontal section of the arc-shaped coaming extends out of the splitter plate towards the side lower part, and the splitter plate and a baffle plate bent towards the side lower part at the upper end of one side of the guide plate form a sundry falling runner which is inclined towards the side lower part; the adjustable air door consists of a circular notch-shaped air door baffle plate which is blocked at a semicircular exhaust opening of the fan and a transmission mechanism consisting of a gear, a rack and a gear shaft; the outer ring of the air door baffle is in a zigzag shape meshed with the gear and hinged at the exhaust port; the gear is meshed with the rack capable of being horizontally pulled; a clamping beam is arranged below the feeding port of the feeding port component, a turnover locking mechanism is hinged below the blanking hopper corresponding to the clamping beam, and a straw discharging mechanism is hinged at the position corresponding to the communication port; the turnover locking mechanism mainly comprises a locking shaft with a bending handle and a radially extending hook head card on the locking shaft; when the hook head of the hooked card rotates away from the position above the clamping beam, the feeding port component can be lifted up around a horizontal hinged support shaft; when the hook head of the hooked card rotates to a position above the clamping beam, the feeding port component is locked at the cover position; the straw discharging mechanism consists of a rotating shaft with a bent handle and a baffle fixedly connected with the rotating shaft and controlling the opening and closing of a straw outlet; the front fixed cross beam and the rear fixed cross beam which are positioned at the two ends are respectively fixedly connected with the left arc plate and the right arc plate at the two sides to form a frame; the left arc plate and the right arc plate are respectively matched with the two ends of the threshing cylinder to form a clamping cover connection.
2. The soybean thresher of claim 1, wherein: the left arc plate and the right arc plate are fixedly connected with semicircle recesses of left side plate and right side plate adaptation respectively, the upper ends of left side plate and right side plate are fixedly connected with the both sides of roof and lower plate respectively, form the feed inlet of one end forward above and the intercommunication mouth of the other end to through intercommunication mouth and have straw export part fixed connection of backward straw export.
3. The soybean thresher of claim 1 or 2, wherein: the threshing cylinder comprises a circular arc section concave plate sieve fixedly connected between the lower parts of a left fixed circular cover and a right fixed circular cover and a rotatable threshing cylinder supported between the left fixed circular cover and the right fixed circular cover, the threshing cylinder mainly comprises main body plates distributed in a regular triangle shape around a rotation center, one side of the plate surface of the main body plates is extended from corresponding triangular vertexes to form plate eaves with axially spaced perforations, the plate eaves is fixedly provided with a continuously extending rubber plate through a fastener, and the rubber plate is provided with long slot holes corresponding to the perforations; the thickness of the rubber plate is 8-10mm, the hardness is 70+/-5 HA, and the extension length is 30-52 mm.
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CN109964657B (en) * | 2019-05-15 | 2024-06-11 | 山西农业大学农学院(山西省农业科学院作物科学研究所) | Millet single-spike threshing machine |
CN115644478B (en) * | 2022-12-27 | 2023-04-07 | 福建泰宁官江湾食品有限公司 | Soybean pod removing equipment and using method thereof |
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