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CN119183802B - Automatic debris removal device for corn harvester - Google Patents

Automatic debris removal device for corn harvester Download PDF

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Publication number
CN119183802B
CN119183802B CN202411730302.4A CN202411730302A CN119183802B CN 119183802 B CN119183802 B CN 119183802B CN 202411730302 A CN202411730302 A CN 202411730302A CN 119183802 B CN119183802 B CN 119183802B
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CN
China
Prior art keywords
plate
corn
impurity removing
corn harvester
screening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202411730302.4A
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Chinese (zh)
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CN119183802A (en
Inventor
李金山
王萍
李树鹏
刘頔
李欣
苏振华
李承桐
李峰
李美琪
杨子慧
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Liaoning Liaotuo Dayi Agricultural Machinery Co ltd
Original Assignee
Liaoning Liaotuo Dayi Agricultural Machinery Co ltd
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Priority to CN202411730302.4A priority Critical patent/CN119183802B/en
Publication of CN119183802A publication Critical patent/CN119183802A/en
Application granted granted Critical
Publication of CN119183802B publication Critical patent/CN119183802B/en
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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00Parts or details of threshing apparatus
    • A01F12/44Grain cleaners; Grain separators
    • A01F12/446Sieving means
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D45/00Harvesting of standing crops
    • A01D45/02Harvesting of standing crops of maize, i.e. kernel harvesting
    • A01D45/028Harvesting devices mounted to a vehicle
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00Parts or details of threshing apparatus
    • A01F12/44Grain cleaners; Grain separators

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Threshing Machine Elements (AREA)

Abstract

The invention discloses an automatic impurity removing device applied to a corn harvester, which relates to the technical field of agricultural machinery and comprises a screening plate, a swinging rod and an avoiding groove, wherein the screening plate comprises a plurality of conveying belts, a plurality of inclined plates are arranged on the conveying belts, the inclined plates are equidistantly distributed along the length direction of the conveying belts, a plurality of straight notches are equidistantly arranged on the side end faces of the conveying belts, shaft parts extending along the length direction of the inclined plates are arranged on two sides of the inclined plates, the shaft parts are inserted into the corresponding straight notches, the swinging rod is rotatably arranged on the outer walls of the conveying belts, and the lower ends of the swinging rod are provided with the avoiding groove. The invention effectively solves the problem of screen plate blockage caused by broken stalks, corn leaves and grains with similar sizes and the problem of corn silk being hung on the screen plate by improving a impurity removing mechanism. The impurity removing process is smoother, impurities can be thoroughly separated from corn kernels, the impurity removing efficiency is greatly improved, and the purity of corn harvesting is guaranteed.

Description

Be applied to automatic trash extraction device of maize picker
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to an automatic impurity removing device applied to a corn harvester.
Background
The corn harvester is an operation machine for mechanically cutting corns, picking ears, peeling, threshing, straw processing, even harvesting rotary tillage land and other production links according to the planting mode and agronomic requirements when corns are mature, and is one of important links in modern agricultural production.
In the field of corn harvesting in modern agriculture, corn harvesting operation is a key link for ensuring efficient production and subsequent utilization of grains, at present, in the corn harvesting process, the main process is to send picked ears into a threshing system to finish threshing, however, after the threshing process is finished, broken stalks, peeled corn leaves and other impurities often appear, the impurities are generated due to the mechanical action of corn plants in the harvesting, conveying and threshing processes, and in the threshing system, the corn ears are subjected to the action of various mechanical parts, so that broken stalks and corn leaves which are originally attached to the ears or mixed in the harvesting process are further separated and mixed with the threshed corn seeds.
In order to ensure the quality of corn harvesting and avoid pollution of impurities to corn kernels, a vibration screening device is usually arranged in a harvester at present to carry out impurity removal treatment on threshed corn.
However, the existing treatment mode has certain limitations:
on one hand, as broken stalks and corn leaves have diversity in shape, size, weight and the like, impurities with the size similar to that of grains can block a sieve plate to reduce impurity discharging efficiency, so that maintenance cost and shutdown time of equipment are increased, and further efficiency and quality of the whole corn harvesting operation are affected;
On the other hand, corn silk in the impurity has special physical properties, and the corn silk is slender and has good flexibility, so that the corn silk is more easily attached to the surface of the sieve plate than other impurities in the impurity removing process, a hanging phenomenon is formed, the hanging phenomenon can reduce the effective screening area of the sieve plate, the impurity removing efficiency is further reduced, and meanwhile, because the corn silk is tightly attached to the sieve plate, the cleaning work becomes very difficult, and the manual cleaning cost is increased.
In view of this, the present application has been made.
Disclosure of Invention
The invention aims to provide an automatic impurity removing device applied to a corn harvester, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides an automatic impurity removing device applied to a corn harvester, which comprises:
the screening plate comprises a plurality of conveying belts, a plurality of inclined plates are arranged on the conveying belts, each inclined plate is distributed at equal intervals along the length direction of the conveying belt, a plurality of straight notch are arranged at equal intervals on the side end face of the conveying belt, shaft parts extending along the length direction of the inclined plates are arranged on two sides of each inclined plate, and the shaft parts are inserted into the corresponding straight notch;
The swinging rod is rotatably arranged on the outer wall of the transmission belt, the lower end of the swinging rod is provided with an avoidance groove, the notch of the swinging rod extends along the length direction of the inclined plate, the shaft part is movably inserted into the avoidance groove, an included angle exists between the avoidance groove and the extending direction of the straight notch, a trigger piece capable of poking the swinging rod to rotate is arranged on the moving path of the transmission belt, and the swinging rod is used for driving the corresponding inclined plate to move along the extending direction of the straight notch after contacting the trigger piece.
Further, the swing lever includes:
the connecting part is rotationally connected to the outer wall of the transmission belt, and the avoidance groove is positioned at the lower end of the connecting part;
the turning part is connected to the upper end of the connecting part and eccentrically extends along the width direction of the sloping plate;
The trigger piece and the trigger angle are positioned on the same horizontal line in the initial state, and the trigger piece and the trigger angle are abutted to drive the swing rod to rotate along with the movement of the swing rod.
Further, a rotating shaft extending along the thickness direction of the swinging rod is arranged on the side wall of the swinging rod, the rotating shaft is fixed with the top surface of the transmission belt, and the swinging rod can rotate along the axis of the rotating shaft.
Further, the screening plate further comprises:
the triggering piece is fixedly arranged on the top wall of the bearing plate;
The conveying rollers are rotatably arranged on the inner side wall of the bearing plate and used for supporting and guiding the conveying belt, and a driving motor used for driving the conveying rollers to rotate is further arranged on the outer wall of the conveying rollers.
Further, the transmission belt includes:
The belt body is arranged on the conveying roller in a meshed transmission manner;
the shaft sleeve is connected inside the straight notch in a sliding manner, and the shaft part is connected inside the shaft sleeve in a rotating manner;
The pushing spring is connected to one side of the shaft sleeve, and one end of the pushing spring, which is far away from the shaft sleeve, is connected with the side wall of the straight slot.
Further, one end of the shaft part, which is far away from the sloping plate, is also connected with a transmission gear, a transmission rack meshed with the transmission gear is arranged on the inner wall of the bearing plate, and when the trigger part toggles the swing rod to rotate, the transmission gear is meshed with the transmission rack.
Further, a torsion spring is sleeved outside the shaft part, one end of the torsion spring is connected with the side wall of the transmission gear, and the other end of the torsion spring is connected with the side wall of the shaft sleeve.
Further, the swash plate includes:
the plate part is of an inclined lamellar structure, and a plurality of groove bodies are formed in the plate part at equal intervals;
the sliding parts are in a straight strip structure and are connected in the groove body in a sliding mode.
Further, a guiding groove concavely arranged inwards is formed in the inner wall of the length direction of the groove body, a guiding block is arranged on the side wall of the sliding part, and the guiding block slides along the guiding groove.
Further, the length of the sliding part is the same as that of the plate part, and when the sliding part is completely inserted into the groove body, the end face of the sliding part is higher than that of the plate part, so that the top surface of the inclined plate forms a serrated surface structure.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the continuous circulating motion of the inclined plate can be driven by the conveying belt, in the process of the motion of the inclined plate, the swinging rod on the side wall of the swinging rod can collide with the trigger piece, the swinging rod rotates after being triggered by the trigger piece, the shaft part arranged on the side wall of the inclined plate can be pulled by the avoidance groove at one end of the swinging rod to horizontally move along the conveying belt, the inclined plate can be driven to move by the movement of the shaft part, the distance between two adjacent inclined plates is further changed, and the effect of increasing the screening passage is further achieved, so that the inclined plate can clear blocked impurities when moving to the position of the trigger piece, and the screening passage is prevented from being blocked.
2. When the trigger part toggles the swing rod to rotate, the transmission gear is meshed with the transmission rack, so that further transmission and conversion of power are realized, the shaft part is driven to rotate specifically, the shaft part can drive the triggered sloping plate to rotate, the included angle between the triggered sloping plate and the other sloping plate adjacent to the triggered sloping plate can be changed, and further the blocked impurities can be further helped to be discharged from the screening channel.
3. According to the invention, the sliding part can slide in the groove body to change the surface form of the inclined plate, and when the conveying belt drives the inclined plate to circularly move, the sliding part can slide out of the groove body due to the gravity factor when the sliding part faces downwards, so that on one hand, the problem of corn silk hanging can be avoided, and on the other hand, the inclined plate moving below the conveying belt can be prevented from shielding wind blown by the fan.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the inside of the machine body according to the present invention;
FIG. 3 is a schematic perspective view of a vibratory screening assembly according to the present invention;
FIG. 4 is a schematic elevational view of a vibratory screening assembly of the present invention;
FIG. 5 is a schematic view of the structure of a screening plate according to the present invention;
FIG. 6 is an enlarged view of the structure at A in FIG. 5;
FIG. 7 is a schematic view of a conveyor belt according to the present invention;
FIG. 8 is a schematic diagram of a connection structure between a conveyor belt and a sloping plate in the present invention;
FIG. 9 is a schematic view showing the overall structure of the swash plate according to the present invention;
fig. 10 is an enlarged view of the structure at B in fig. 9;
fig. 11 is a schematic view showing a structure of the swash plate in the unfolded state in the present invention.
In the figure, 1, a harvester body, 2, a harvesting device, 3, a lifting channel, 4, a threshing device, 5, a walking device, 6, a collecting plate, 7 and a fan;
8. Screening plate, 801, bearing plate, 802, conveying roller, 803, conveying belt, 8031, belt body, 8032, straight slot, 804, sloping plate, 8041, plate part, 8042, sliding part, 8043, slot body, 8044, guide slot, 8045, shaft part, 8046, transmission gear, 805, shaft sleeve, 806, pushing spring, 807, swinging rod, 808, trigger piece, 809, rotating shaft, 810, transmission rack, 811, torsion spring, 812, sundries collecting bin, 813, third screw conveyer;
9. the device comprises a impurity removing net, 901, a fish scale plate, 902 and a stock guide plate;
10. The device comprises a receiving part, 1001, a receiving plate, 1002, a grain collecting bin, 1003, a first screw conveyor, 1004, an impurity collecting bin, 1005 and a second screw conveyor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to FIGS. 1-11, the present invention provides a technical scheme for an automatic impurity removing device applied to a corn harvester, comprising:
Screening plate 8, screening plate 8 includes a plurality of conveyer belts 803, is provided with a plurality of swash plates 804 on the conveyer belt 803, and each swash plate 804 is arranged along the length direction equidistance of conveyer belt 803, is provided with a plurality of straight slot 8032 on the side terminal surface of conveyer belt 803 equidistance, is provided with the shaft portion 8045 that extends along its length direction in the both sides of swash plate 804, and shaft portion 8045 peg graft in corresponding straight slot 8032.
The swinging rod 807 is rotatably arranged on the outer wall of the transmission belt 803, the lower end of the swinging rod 807 is provided with an avoidance groove, the notch of the avoidance groove extends along the length direction of the inclined plate 804, the shaft portion 8045 is movably inserted into the avoidance groove, an included angle exists between the avoidance groove and the extending direction of the straight groove opening 8032, a trigger piece 808 capable of poking the swinging rod 807 to rotate is arranged on the moving path of the transmission belt 803, and the swinging rod 807 is used for driving the corresponding inclined plate 804 to move along the extending direction of the straight groove opening 8032 after contacting the trigger piece 808.
The corn harvester mainly comprises a harvester body 1, a harvesting device 2, a lifting channel 3, a threshing device 4, a traveling device 5, a collecting plate 6 and a fan 7.
The harvesting device 2 is arranged at the front end of the harvester body 1 and is used for separating corn plants from a natural field growth state, guiding the corn plants to enter an internal cutter and harvesting corn through the cutter;
The lifting channel 3 is matched with the harvesting device 2 to convey the harvested corn plants to the threshing device 4.
The threshing device 4 is used for realizing threshing through an axial-flow roller, after corn plants enter the roller, the corn plants are axially moved while being threshed under the pushing of the helical blades, and meanwhile, the corn can be separated and cleaned to a certain extent by the axial-flow threshing, so that corn kernels, corncobs and other impurities are primarily separated.
The travelling device 5 is a crawler type travelling device and is used for driving the harvester body 1 to move in the field, and mainly comprises a driving wheel, a guide wheel, a crawler and other parts, wherein the crawler type travelling device has better adhesive force and trafficability, is suitable for wet and soft field operation, the speed of the travelling device 5 can be adjusted according to the actual requirement of the harvesting operation, the harvester can generally travel at a lower speed during harvesting to ensure the harvesting quality, and the harvester can properly increase the speed during field transfer.
The collecting plate 6 is arranged below the threshing device 4 to convey the corn separated by the threshing device 4 to the screening plate 8.
The blower 7 is arranged below the collecting plate 6, the air outlet of the blower 7 corresponds to the screening plate 8, the blower 7 is mainly used for generating air flow, lighter impurities such as bran, broken leaves and the like are blown away from corn kernels through the air flow, the air quantity and the air speed of the blower 7 can be adjusted, larger air quantity and air speed are possibly needed to thoroughly remove the impurities when the dried corn is harvested, and the air quantity and the air speed are appropriately reduced when the corn with higher water content is harvested so as to avoid the corn kernels from being blown away, and the blower 7 is arranged on one side of the screening plate 8 and is matched with the screening plate 8 to jointly complete the separation and impurity removal of the corn kernels.
The edulcoration net 9 sets up in the below of screening board 8, and the maize after separation through screening board 8 can fall on edulcoration net 9 to screen the maize through edulcoration net 9 again, realize the effect of dual screening.
Receive material portion 10, set up in the below of edulcoration net 9, corn grain after screening board 8 and edulcoration net 9 separation can fall on receiving material portion 10, specifically, edulcoration net 9 includes fish scale 901 and the stock guide 902 of slope installation in fish scale 901 bottom surface, receive material portion 10 including install the receipts flitch 1001 in edulcoration net 9 below, be provided with the seed grain collection storehouse 1002 that is used for collecting corn grain on the receipts flitch 1001, the inside first screw conveyer 1003 that is used for carrying corn grain to the outside of harvester organism 1 that is provided with in seed grain collection storehouse 1002, still be provided with the impurity collection storehouse 1004 that is used for collecting corn impurity on the receipts flitch 1001, the inside in impurity collection storehouse 1004 is provided with the second screw conveyer 1005 that is used for carrying corn grain to the outside of harvester organism 1.
Still be provided with vibrating motor in the inside of harvester organism 1, vibrating motor passes through the vibrating axle and is connected with screening board 8, is connected with screening board 8 through the vibrating axle, produces vibration after the vibrating motor starts, and this kind of vibration passes through the vibrating axle and transmits screening board 8, provides the power basis for whole screening process, makes the maize on the screening board 8 can carry out preliminary loosening and separation under the vibrating action.
Specifically, the plurality of sloping plates 804 are distributed along the length direction of the conveying belt 803, gaps between two adjacent sloping plates 804 form screening channels, when corn containing impurities falls on the sloping plates 804, the corn can be screened by forming the screening channels, the impurities remain on the upper surface of the sloping plates 804, and some impurities can be blocked in the formed screening channels.
The swash plate 804 can be driven to continuously circularly move through the transmission belt 803, in the process of the movement of the swash plate 804, the swinging rod 807 on the side wall of the swinging rod 807 can be abutted against the triggering piece 808, the swinging rod 807 is triggered by the triggering piece 808 and then rotates, the shaft portion 8045 arranged on the side wall of the swash plate 804 can be pulled by the avoidance groove at one end of the swinging rod 8045 to horizontally move along the transmission belt 803, the swash plate 804 can be driven to move by the movement of the shaft portion 8045, the distance between two adjacent swash plates 804 is changed, and then the effect of increasing screening channels is achieved, so that the swash plate 804 can clear blocked impurities at the position of the triggering piece 808, and the screening channels are prevented from being blocked.
Through improving the trash extraction mechanism, effectively solved the screening board 8 that leads to because of disconnected stalk, maize leaf and seed grain similar size and blockked up the problem to and the corn silk is hung and is attached on screening board 8, trash extraction process is more smooth and easy, can separate out impurity from the corn seed grain more thoroughly, has greatly improved trash extraction efficiency, has ensured the purity degree of maize results.
Referring to fig. 10, the swing lever 807 includes a connection portion rotatably connected to the outer wall of the transmission belt 803, and a relief groove is provided at the lower end of the connection portion.
And a turning part connected to the upper end of the connection part and eccentrically extending in the width direction of the inclined plate 804.
The extension part is connected to the free end of the turning part and is parallel to the inclined plate 804, the connection part of the turning part and the extension part forms a trigger angle, the trigger piece 808 and the trigger angle are positioned on the same horizontal line in the initial state, and the trigger piece 808 is abutted with the trigger angle to drive the swing rod 807 to rotate along with the movement of the swing rod 807.
Specifically, in the initial state, the trigger angle of the swing rod 807 is on the same horizontal line with the trigger member 808, when a specific condition occurs during the running of the conveyor belt 803, the trigger angle gradually approaches and collides with the swing rod 807 as the swing rod 807 moves due to the initial horizontal correspondence between the trigger member 808 and the trigger angle, and because the trigger member 808 applies a force to the trigger angle, and the connecting portion of the swing rod 807 is rotatably connected to the outer wall of the conveyor belt 803, the swing rod 807 rotates about the connecting portion as an axis under the force, wherein the turning portion eccentrically extends along the width direction of the inclined plate 804 due to the connection to the upper end of the connecting portion, and the extending portion is parallel to the inclined plate 804, and can toggle the shaft sleeve 805 and the shaft portion 8045 to slide along the straight slot 8032 during the rotation of the swing rod 807.
Referring to fig. 5, 6, 9 and 10, a rotation shaft 809 extending in the thickness direction of the swing lever 807 is provided on the side wall of the swing lever 807, the rotation shaft 809 is fixed to the top surface of the conveyor 803, and the swing lever 807 can rotate along the axis of the rotation shaft 809 itself.
Specifically, when the trigger piece 808 rotates the swinging rod 807 and other related components move, the swinging rod 807 can flexibly rotate by taking the rotating shaft 809 as an axis, and the rotating mode enables the swinging rod 807 to respond to the stirring of the trigger piece 808 and the influence of other related movements more accurately in the whole operation process of the impurity removing device, so that more accurate movement coordination is realized, and the impurity removing device is beneficial to more effectively treating impurities.
Referring to fig. 2-6, the screening deck 8 further includes a plurality of carrier plates 801 mounted at spaced intervals within the corn harvester, and trigger members 808 fixedly mounted on the top wall of the carrier plates 801.
A plurality of conveying rollers 802 rotatably disposed on an inner side wall of the carrier plate 801 for supporting and guiding the conveying belt 803, and a driving motor for driving the conveying rollers 802 to rotate is further disposed on an outer wall thereof.
Specifically, the carrier plate 801 provides a stable installation foundation for the whole screening plate 8, ensures that all the components can work accurately and cooperatively, and the conveying roller 802 and the driving motor are arranged to enable the conveying belt 803 to operate effectively, so that the inclined plate 804 can be conveyed in the screening plate 8 according to a designed path so as to carry out impurity discharging treatment subsequently.
Referring to fig. 5-8, the conveyor 803 includes a belt body 8031, which is disposed in meshing engagement with the conveyor roller 802.
The shaft sleeve 805, the shaft sleeve 805 is slidably connected inside the straight slot 8032, and the shaft portion 8045 is rotatably connected inside the shaft sleeve 805.
The pushing spring 806 is connected to one side of the shaft sleeve 805, and one end of the pushing spring 806 away from the shaft sleeve 805 is connected to the side wall of the straight slot 8032.
Specifically, the transmission belt 803 includes a belt body 8031, and is disposed on the conveying roller 802 through engagement transmission to realize power transmission and rotate, when the belt body 8031 is in operation, the shaft sleeve 805 can have a certain sliding space in the straight slot 8032, and the belt body can adapt to different working conditions and conditions of tiny displacement among components to a certain extent by matching with the pushing spring 806, so that reliability and flexibility of connection between the transmission belt 803 and the components such as the inclined plate 804 are ensured.
It should be noted that, the shaft sleeve 805 is provided to make the sliding of the shaft portion 8045 in the straight slot 8032 more stable, and the pushing spring 806 may be in a stable state when the swash plate 804 is not triggered by the trigger 808, and may be restored to an initial state after the swash plate 804 is triggered.
Referring to fig. 5, 6, 8, 9 and 10, a transmission gear 8046 is further connected to an end of the shaft portion 8045 away from the inclined plate 804, a transmission rack 810 meshed with the transmission gear 8046 is disposed on an inner wall of the bearing plate 801, and when the trigger 808 rotates the swing rod 807, the transmission gear 8046 is meshed with the transmission rack 810.
When the trigger piece 808 rotates the swing rod 807, the transmission gear 8046 is meshed with the transmission rack 810, so that further transmission and conversion of power are realized, the shaft portion 8045 is driven to rotate specifically, the shaft portion 8045 can drive the triggered inclined plate 804 to rotate, the triggered inclined plate 804 can rotate, the included angle between the triggered inclined plate 804 and the other adjacent inclined plate 804 can be changed, and further, the blocked impurities can be further helped to be discharged from the screening channel.
Through such a transmission structure, on the basis of the action of triggering the swinging rod 807 to rotate by the triggering piece 808, a power transmission link is further expanded, so that different parts in the device can work in a closer and cooperated mode, more complex action combination is realized, impurities can be treated more effectively, and the impurity removal efficiency and effect are improved.
Referring to fig. 10, a torsion spring 811 is further provided around the shaft portion 8045, one end of the torsion spring 811 is connected to the side wall of the transmission gear 8046, and the other end of the torsion spring 811 is connected to the side wall of the sleeve 805.
Specifically, during operation of the device, when the engagement or disengagement of the drive gear 8046 with the drive rack 810, etc., occurs, the torsion spring 811 will deform and store or release energy accordingly.
The torsion spring 811 can play a role in buffering and resetting, when the meshing state between the transmission gear 8046 and the transmission rack 810 changes, the torsion spring 811 can enable related parts to be stably transited, reduce the impact and abrasion of the parts caused by sudden force change, prolong the service life of the device, help to maintain the stability of the operation of the device, ensure the continuous and effective operation of impurity removal, and simultaneously, the elasticity of the torsion spring 811 pushes the shaft portion 8045 to reset when the transmission gear 8046 is meshed and separated with the transmission rack 810, so that the inclined plate 804 can be ensured to reset and maintain the inclined state.
Referring to fig. 7, a trash collection bin 812 is further disposed between the two opposite bearing plates 801, the trash collection bin 812 is located below the inclined plate 804, and a third screw conveyor 813 is disposed inside the trash collection bin 812.
Specifically, a trash collection bin 812 is disposed between two opposite bearing plates 801 and is located below the inclined plate 804, and is used for collecting the screened trash, and a third screw conveyor 813 is disposed inside the trash collection bin 812, so that the collected trash can be conveyed and transferred for subsequent processing.
The impurity collection bin 812 and the third screw conveyor 813 are arranged to effectively collect and timely transfer impurities, so that the impurity accumulation in the device is avoided to influence impurity removal effect and device operation, impurity removal work can be continuously and efficiently performed, centralized treatment of the impurities is facilitated, and the workload and difficulty of manual cleaning are reduced.
Referring to fig. 9 and 11, the inclined plate 804 includes a plate portion 8041 having a sheet-like structure with a plurality of grooves 8043 formed thereon at equal intervals.
The sliding parts 8042 are in a straight strip structure and are slidably connected inside the groove 8043.
Specifically, during the running process of the device, the sliding portion 8042 can slide in the groove 8043, the surface form of the inclined plate 804 is not fixed and unchanged due to the slidable design, and can be dynamically adjusted according to the running state of the device, when the transmission belt 803 drives the inclined plate 804 to circularly move, gravity starts to act under the condition that the sliding portion 8042 faces downwards, the sliding portion 8042 slides out of the groove 8043 due to the influence of gravity, the sliding portion changes the surface state of the inclined plate 804, the hanging condition of corn silk is damaged for impurities with slender and good flexibility characteristics, the surface of a traditional sieve plate is relatively flat and smooth, corn silk is easy to be attached on the surface of the inclined plate 804, but the surface of the inclined plate 804 becomes irregular due to the sliding of the sliding portion 8042, the possibility that the corn silk is in large-area close contact with the inclined plate 804 is reduced, and the problem of corn silk is effectively avoided. This not only maintains the effective screening area of the inclined plate 804, but also avoids the problem of reduced impurity removal efficiency due to corn silk attachment.
In the operation of the device, the wind blown out by the fan 7 plays an important role in the impurity removal process, the impurity blowing-out screening area is facilitated, when the inclined plate 804 moves to the lower part of the conveying belt 803 along with the conveying belt 803, if the shape of the inclined plate 804 is fixed, the wind blown out by the fan 7 can be shielded, the effect of the wind on the impurity is affected, and the structure of the inclined plate 804 becomes more transparent due to the fact that the sliding part 8042 slides out from the groove body 8043 under the action of gravity, the wind can more smoothly pass through the inclined plate 804 to reach the area needing impurity removal, the blowing-out and the cleaning effect of the fan 7 on the impurity are not blocked, the impurity removal efficiency of the whole device is further improved, the design fully utilizes the gravity and the adjustable structure of the inclined plate 804, and the impurity removal process is optimized from multiple aspects.
Referring to fig. 11, a guiding groove 8044 concavely provided in the inner wall of the groove 8043 in the length direction is provided on the side wall of the sliding portion 8042, and the guiding block slides along the guiding groove 8044.
Specifically, when the sliding portion 8042 slides in the groove body 8043 in this way, accurate sliding control is realized by the cooperation of the guide block and the guide groove 8044.
The sliding accuracy and stability of the sliding portion 8042 in the groove body 8043 are ensured by the guide groove 8044 and the guide block, so that the surface morphology of the inclined plate 804 is more reliably adjusted, and further, the inclined plate can be effectively adjusted according to different impurity conditions, the screening and separating effects of the device on impurities are guaranteed, and the impurity removing efficiency is improved.
Referring to fig. 9 and 11, the sliding portion 8042 has the same length as the plate portion 8041, and when the sliding portion 8042 is completely inserted into the groove 8043, the end surface thereof is higher than the end surface of the plate portion 8041, so that the top surface of the inclined plate 804 forms a serrated surface structure.
Specifically, the serrations may increase the friction between the corn particles and the impurities and the surface of the inclined plate 804 as the corn particles and the impurities move on the inclined plate 804, and the serrated surface may allow the corn particles to be more easily blocked or change the movement direction during the movement, and the impurities having different sizes from the corn particles, such as small stones, crushed soil, etc., may be more easily separated from the corn particles due to the difference of friction when passing over the serrated surface.
The existence of sawtooth can carry out better screening to the maize, in the selection by winnowing edulcoration in-process, the mixture of maize and impurity is blown by the wind on the otter board that has the sawtooth, and the sawtooth can make maize and impurity be in different levels or positions, and lighter impurity is blown by the wind more easily like dust, garrulous shell, and maize granule is difficult to be blown away by the wind owing to the blocking and the layering effect of sawtooth to impurity and maize separation efficiency has been improved.
The corn harvester comprises a harvester body 1, a harvesting device 2 and a travelling device 5, wherein the harvested corn is harvested through cooperation of the harvester body 1, the harvesting device 2 and the travelling device 5, the harvested corn is conveyed to the threshing device 4 through a lifting channel 3 and falls on a collecting plate 6 after being threshed by the threshing device 4, the collecting plate 6 conveys the corn to a screening plate 8, a fan 7 is arranged below the collecting plate 6, an air outlet of the fan is corresponding to the screening plate 8, the fan 7 is mainly used for generating air flow, lighter impurities such as bran, broken leaves and the like are blown away from corn grains through the air flow, vibration is generated after a vibration motor is started, the vibration is transmitted to the screening plate 8 through a vibration shaft, a power basis is provided for the whole screening process, and the corn on the screening plate 8 can be primarily loosened and separated under the vibration effect of the vibration, so that the corn screening effect is achieved.
The transmission belt 803 is driven by a driving motor to rotate, the transmission belt 803 can drive the inclined plate 804 to continuously circularly move, the swinging rod 807 on the side wall of the swinging rod 807 is abutted against the triggering piece 808 in the moving process of the inclined plate 804, the shaft portion 8045 arranged on the side wall of the swinging rod 807 can be pulled to horizontally move along the transmission belt 803 by the avoidance groove at one end of the swinging rod 8045, the inclined plate 804 can be driven to move by the movement of the shaft portion 8045, the distance between two adjacent inclined plates 804 is further changed, the effect of increasing a screening channel is further achieved, the inclined plate 804 can clear blocked impurities at the position of the triggering piece 808, the screening channel is prevented from being blocked, when the triggering piece 808 is stirred to rotate by the swinging rod 807, the transmission gear 8046 is meshed with the transmission rack 810, further power is further transmitted and converted, the shaft portion 8045 is driven to specially rotate, the triggered inclined plate 804 can be driven to rotate, the included angle between the other inclined plate 804 adjacent inclined plate can be changed, further blocked impurities can be discharged from the screening channel, the effect of the driving mechanism 808 is further improved, the complicated and the combined action can be further achieved on the basis of the driving piece 808 to tightly spread the rotating, the complicated action is further, and the complicated action can be further improved.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. Be applied to automatic trash extraction device of maize picker, characterized in that includes:
The screening device comprises a screening plate (8), wherein the screening plate (8) comprises a plurality of conveying belts (803), a plurality of inclined plates (804) are arranged on the conveying belts (803), the inclined plates (804) are equidistantly distributed along the length direction of the conveying belts (803), a plurality of straight notches (8032) are equidistantly arranged on the side end faces of the conveying belts (803), shaft parts (8045) extending along the length direction of the inclined plates are arranged on two sides of the inclined plates (804), and the shaft parts (8045) are inserted into the corresponding straight notches (8032);
Swing rod (807) rotationally sets up on conveyer belt (803) outer wall, dodge the groove has been seted up to the lower extreme of swing rod (807), and its notch extends along the length direction of swash plate (804), shaft portion (8045) activity grafting is dodging in the inslot, dodges and exist the contained angle between the extending direction of groove and straight slot mouth (8032), is provided with on the travel path of conveyer belt (803) and can stir swing rod (807) pivoted trigger piece (808), be used for after swing rod (807) contacted trigger piece (808), drive corresponding swash plate (804) and remove along the extending direction of straight slot mouth (8032).
2. An automatic impurity removing device for corn harvester according to claim 1, wherein said swinging rod (807) comprises:
The connecting part is rotationally connected to the outer wall of the transmission belt (803), and the avoidance groove is positioned at the lower end of the connecting part;
A turning part connected to the upper end of the connecting part and eccentrically extending in the width direction of the swash plate (804);
The trigger piece (808) and the trigger angle are positioned on the same horizontal line in the initial state, and the trigger piece (808) is abutted with the trigger angle to drive the swing rod (807) to rotate along with the movement of the swing rod (807).
3. An automatic impurity removing device for a corn harvester according to claim 2, wherein a rotating shaft (809) extending along the thickness direction of the swinging rod (807) is arranged on the side wall of the swinging rod, the rotating shaft (809) is fixed with the top surface of the conveying belt (803), and the swinging rod (807) can rotate along the axis of the rotating shaft (809).
4. An automatic impurity removing device for corn harvester according to any one of claims 1-3, characterized in that said screening plate (8) further comprises:
The plurality of bearing plates (801) are arranged in the corn harvester at intervals in the direction perpendicular to the length direction of the inclined plate (804), and the triggering piece (808) is fixedly arranged on the top wall of the bearing plates (801);
the conveying rollers (802) are rotatably arranged on the inner side wall of the bearing plate (801) and used for supporting and guiding the conveying belt (803), and a driving motor used for driving the conveying rollers (802) to rotate is further arranged on the outer wall of the conveying rollers.
5. An automatic impurity removing device for corn harvester according to claim 4, wherein said conveyor belt (803) comprises:
The belt body (8031) is arranged on the conveying roller (802) in a meshed transmission manner;
a shaft sleeve (805), wherein the shaft sleeve (805) is slidably connected inside the straight slot (8032), and the shaft portion (8045) is rotatably connected inside the shaft sleeve (805);
the pushing spring (806) is connected to one side of the shaft sleeve (805), and one end, away from the shaft sleeve (805), of the pushing spring (806) is connected with the side wall of the straight slot (8032).
6. The automatic impurity removing device for the corn harvester according to claim 5, wherein one end, far away from the inclined plate (804), of the shaft portion (8045) is further connected with a transmission gear (8046), a transmission rack (810) meshed with the transmission gear (8046) is arranged on the inner wall of the bearing plate (801), and when the trigger piece (808) rotates the swing rod (807), the transmission gear (8046) is meshed with the transmission rack (810).
7. The automatic impurity removing device for corn harvester according to claim 6, wherein a torsion spring (811) is further sleeved outside the shaft portion (8045), one end of the torsion spring (811) is connected with the side wall of the transmission gear (8046), and the other end of the torsion spring (811) is connected with the side wall of the shaft sleeve (805).
8. The automatic impurity removing device for corn harvester according to claim 1, wherein the inclined plate (804) comprises:
a plate part (8041) which is in a sheet-shaped structure in an inclined arrangement, and a plurality of groove bodies (8043) are formed on the plate part at equal intervals;
the sliding parts (8042) are in a straight strip structure and are connected inside the groove body (8043) in a sliding mode.
9. The automatic impurity removing device for the corn harvester according to claim 8, wherein the inner wall of the length direction of the groove body (8043) is provided with a guide groove (8044) concavely arranged inwards, the side wall of the sliding part (8042) is provided with a guide block, and the guide block slides along the guide groove (8044).
10. The automatic impurity removing device for corn harvester according to claim 9, wherein the length of the sliding part (8042) is the same as that of the plate part (8041), and when the sliding part (8042) is completely inserted into the groove body (8043), the end face of the sliding part is higher than that of the plate part (8041), so that the top surface of the inclined plate (804) forms a serrated surface structure.
CN202411730302.4A 2024-11-29 2024-11-29 Automatic debris removal device for corn harvester Active CN119183802B (en)

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Publication number Priority date Publication date Assignee Title
CN103053270A (en) * 2012-11-30 2013-04-24 郑州中联收获机械有限公司 Corn harvester and edulcoration and screening device for grains of corn harvester
CN114365625A (en) * 2020-10-15 2022-04-19 新疆大学 An adjustable screening and harvesting device for picking up fallen fruit

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KR20120051509A (en) * 2010-11-12 2012-05-22 대건산업(주) The roller type recyclable goods sorting apparatus
CN210900405U (en) * 2019-07-24 2020-07-03 宁夏绿峰源农业科技有限公司 Special combine of chenopodium quinoa
CN214508083U (en) * 2020-12-28 2021-10-29 惠州市祥浩实业有限公司 Corn thresher shale shaker
JP7075630B1 (en) * 2021-03-26 2022-05-26 井関農機株式会社 Threshing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103053270A (en) * 2012-11-30 2013-04-24 郑州中联收获机械有限公司 Corn harvester and edulcoration and screening device for grains of corn harvester
CN114365625A (en) * 2020-10-15 2022-04-19 新疆大学 An adjustable screening and harvesting device for picking up fallen fruit

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