749results about "Threshers" patented technology

This utility model discloses a corn threshing roller and a corn threshing roller assembly, belonging to the technical field of small agricultural threshers, mainly used for corn threshing. The technical problem to be solved by this utility model is to provide a corn threshing roller, including a rotating shaft and a supporting mechanism. A first layer of threshing ribs is arranged on the supporting mechanism with the rotating shaft as the center, and a second layer of threshing ribs is arranged outside the first threshing ribs. The supporting mechanism includes end supports arranged at the ends of the rotating shaft, and the first layer of threshing ribs is arranged between the end supports. The inner side of the first layer of threshing ribs has space for material passage. A corn threshing roller assembly is also provided, including a first and a second threshing roller arranged in parallel, forming a threshing channel between them. The first threshing roller is the aforementioned corn threshing roller, and the second threshing roller includes a second rotating shaft, a second supporting mechanism, and auxiliary threshing ribs. This utility model can improve the threshing rate and threshing efficiency, reduce the breakage rate, and improve the threshing quality.

The invention provides a cleaning device with an adjustable screening behavior suitable for densely-planted corn, and belongs to the field of corn harvesting machinery. Comprising an upper screen box, a shaking plate, a centrifugal fan, a crank connecting rod mechanism and a lower screen box, the centrifugal fan is fixedly connected with a harvester, the shaking plate is arranged above the centrifugal fan, one end of the shaking plate corresponds to a discharging port of a threshing device, the other end of the shaking plate is provided with the upper screen box, and the lower screen box is arranged below the upper screen box. The ends, close to the centrifugal fan, of the upper screen box and the lower screen box are connected through crank connecting rod mechanisms, the crank connecting rod mechanisms are symmetrically arranged on the two sides of the upper screen box and the two sides of the lower screen box, and a structural unit of the vibrating screen with the adjustable screen penetrating behavior is composed of an upper-section screen plate, a middle-section screen plate, a lower-section screen plate and an inclination-angle-adjustable screen plate. The throwing force of the front end area of the vibrating screen on mixture particles and the vertical speed of air flow on the screen are increased, the separation effect of impurities and grains is promoted, the grain penetrating through the screen is improved, and the low-loss and high-cleanliness purposes of corn grain cleaning are achieved.

A drive train (22, 24) for a drive device (20) is disclosed. The drive train (22, 24) comprises an input shaft (28), a hollow shaft (30, 32) connected to the input shaft (28) for drive purposes, and a bevel gear stage (34, 36) connected to the hollow shaft (30, 32) for drive purposes, wherein the bevel gear stage (34, 36) comprises a drive bevel gear (42, 44) and an output bevel gear (46, 48), wherein the drive bevel gear (42, 44) has a gear hub with internal teeth (92, 94) which engages with a first external toothing section (96, 98) extending axially on the hollow shaft (30, 32). The first external toothing area (96, 98) is formed on a first connecting area (102, 106) of the hollow shaft (30, 32).A rotary transmission area (100, 101) of the hollow shaft (30, 32) extends axially adjacent to the first connection area (102, 106), wherein the rotary transmission area (100, 101) forms a rotationally fixed drive connection between the input shaft (28) and the first connection area (102, 106), and wherein the first connection area (102, 106) between the rotary transmission area (100, 101) and the external gearing area (96, 98) is provided with a first recess (114, 118) that defines a predetermined breaking point. Furthermore, a drive device (20) with such a drive train (22, 24) and an agricultural machine with such a drive device (20) are disclosed.

Combine harvesters may include crop processing systems having a grate subassemblies with flaps that, in some instances, are divided into groups that are independently movable and moveable in opposite directions between a fully open position and a fully closed position. Further, each of the grate assemblies may include an actuator that is operable to actuate simultaneously a portion of the flaps on each of the grate assemblies.

A dynamically operated concave threshing bar system, method, and apparatus wherein one or more threshing bars within a concave can dynamically move to various positions in real-time based on one or more conditions such as the type crop being harvested and on a determination by a combine harvester's computerized system, artificial intelligence (AI) system, or upon the operators' input, among others. The concave can include a concave frame having a pair of arcuate side members, a threshing bar, and an actuator coupled to the threshing bar, wherein the actuator can be configured to move the threshing bar along the arcuate side members of the concave frame.

The utility model provides a self-propelled sunflower harvester, which belongs to the technical field of agricultural machinery and structurally comprises a self-propelled vehicle machine and a frame, a header is arranged at the front end of the frame, and a primary conveyor and a secondary conveyor are communicated with the rear of the header. The rear part of the secondary conveyor is communicated with a thresher; a screening mechanism is arranged below the thresher, and the screening mechanism is composed of a first-stage vibrating screen which is composed of a swinging fish scale screen and rushes backwards, and a second-stage vibrating screen which is composed of a swinging stepped dense mesh screen and rushes forwards; the screening mechanism communicates with the conveying and lifting mechanism. The conveying and lifting mechanism comprises a transverse auger and a bucket elevator. And the conveying and lifting mechanism is connected with the grain collecting hopper. The sunflower seed and sunflower disc separating device can achieve good separation of sunflower seeds and sunflower discs, the sunflower seeds and the sunflower discs are respectively conveyed in two paths during threshing, and simple and efficient threshing separation can be achieved. The threshing process is automatically completed, manpower and material resources are saved, and good harvesting and harvesting effects are achieved.

The invention relates to the technical field of agricultural harvesting equipment, in particular to an awn crushing, threshing and cleaning device of a highland barley combine harvester. Wherein the threshing cylinder is divided into a front end awn crushing section and a rear end threshing section, two sections of spike teeth are driven to rotate reversely through a coaxial reversing mechanism, a feeding auger and an awn crushing fan are arranged at the front end, and material conveying and preliminary wheat awn scattering are synchronously achieved; an anti-blocking and unblocking roller device is assembled on the outer side of the arc-shaped concave plate, and screen hole clamping objects are carded in real time; a top cover plate of the threshing cylinder is provided with a sectional type material guide plate, a hydraulic spike tooth assembly and a feeding quantity sensor, and the material accumulation working condition is dynamically adapted; the controllable fan is provided with a variable frequency drive and an adjustable air guide plate, and the air speed and the airflow direction can be adjusted according to working conditions. All the modules work cooperatively through the controller, threshing-awn crushing-cleaning integrated operation of highland barley is achieved, threshing thoroughness, awn processing efficiency and cleaning precision can be improved, manual intervention is reduced, and the requirement for large-scale highland barley harvesting is met.

A self-aligning power-assisted corn kernel cutting apparatus is provided. The apparatus includes a cylindrical shell ported housing coupled to an actuation mechanism at a first end and an annular cutting mechanism at a second end. The actuation mechanism includes a power-assisted piston rod coupled to self-aligning plunger via a spring and an inner plunger disposed within the self-aligning plunger. In operation a user places an ear of corn within the ported housing wherein self-aligning plunger is force down upon the ear causing the ear to align properly. Power assistance is provided to the actuation mechanism which forces the ear over the annular cutting mechanism ejecting kernels through at least one port into an optional toroidal bowl. Once actuation mechanism bottoms out inner plunger forces the cob through an ejection tube.

A hybrid twin process uses an independent mechanical destructive process and an illumination process to change of state of weed seeds to having reduced germination viability by illuminating a seed with at least one of 2 J / cm2 cumulative illumination energy, and 0.2 W / cm2 irradiance, but no more than 7 W / cm2 average irradiance, of at least one of an Indigo Region Illumination Distribution (IRID), and infrared radiation that is substantially Medium Wavelength Infrared (MWIR) radiation, preferably 2-8 microns. The process can be incorporated into a harvester combine to convert a tailings flow prior to discharge on an agricultural field. For the mechanical destructive process, high required applied energy, noise, wear, and difficulty treating impact-resistant seeds are avoided by modifying a driven load flow via increased capability of exposure to illumination and underdriving the mechanical destructive process. This can include randomization, rarefaction and enhanced circulation.

The present invention aims to provide a combine harvester that can maintain good threshing performance by improving the feeding of grain stalks into the threshing device, even when a large amount of grain stalks are sent to the threshing device. [Solution] In a combine harvester, a threshing device 4 is mounted on the machine frame 1, in which a threshing cylinder 11 is pivotally supported in a threshing chamber 10, a plurality of grain stalk feeding guides 60 are provided in the threshing chamber 10, and a receiving net 12 surrounds the lower half of the threshing cylinder 11. The threshing device of the combine harvester is characterized in that the spacing La of the front grain stalk feeding guides 60a provided on the front end side of the threshing cylinder 11 is narrower than the spacing Lb of the intermediate grain stalk feeders 60b provided in the middle part of the threshing cylinder 11.

The utility model discloses an impurity removing device for a gasoline engine type peanut picker, which comprises a peanut picker body, a first collecting box for collecting peanuts is arranged on the peanut picker body, a material conveying mechanism is arranged at the side end of the peanut picker body, the material conveying mechanism is communicated with the inside of the first collecting box through a first connecting pipe, and a second connecting pipe is arranged at the side end of the first collecting box. The peanut picker comprises a peanut picker body, an impurity removal box is installed on the peanut picker body, two impurity removal grooves are formed in the impurity removal box, filter screen plates are installed at the positions, corresponding to the two impurity removal grooves, of the bottom end of the impurity removal box, a first rotating shaft is rotationally connected to the interior of the impurity removal box, and a first motor for driving the first rotating shaft to rotate is installed on the impurity removal box; and discharging openings are formed in the positions, corresponding to the two impurity removing grooves, of the side end of the impurity removing box, and a box cover is installed at the top end of the impurity removing box, so that peanuts in the impurity removing grooves are conveniently stirred, the peanuts are prevented from being accumulated on the filter screen plate, and the peanut impurity removing effect is guaranteed.

A manual sorghum threshing device belongs to grain threshing devices and comprises a first unit, the first unit comprises a protective glove, the protective glove comprises a finger portion and a palm portion, a protective plate is arranged on the finger portion and / or the palm portion, and spine protrusions used for increasing friction force are arranged on the protective plate; the second unit comprises two unit bodies of the same structure, the two unit bodies are hinged, a threshing plate is fixedly arranged relative to the inner side faces of the unit bodies, the other side of the threshing plate is an arc-shaped edge, and edge teeth used for threshing are arranged on the arc-shaped edge. After the two unit bodies are buckled, the threshing plates arranged on the two unit bodies are matched to form a ring structure allowing sorghum stalks to penetrate through. The small-scale sorghum threshing device can achieve small-scale manual sorghum threshing, is simple and reasonable in structural design, convenient to use and low in cost, and can achieve high-efficiency sorghum threshing, so that the labor intensity of manual threshing is reduced, and the manual threshing efficiency is improved.

The invention provides a high-water-content corn threshing mechanism based on a PLC system, and relates to the technical field of agricultural machinery. The device is composed of a power and transmission mechanism, a gap bridge mechanism, a feeding mechanism, a threshing mechanism, a control system and a machine shell. The power and transmission mechanism dynamically adjusts the rotating speed of an engine to realize linkage speed regulation of the whole machine; a chain harrow conveying assembly of the gap bridge mechanism stably conveys corn crops; the feeding mechanism guarantees continuous supply of crops; the threshing mechanism adopts an optimally designed longitudinal axial flow threshing cylinder, so that the threshing efficiency and quality are improved. The control system collects data in real time, calculates blockage risk factors based on a PLC, intelligently adjusts the speed and prevents blockage. By means of the high-water-content corn threshing mechanism based on the PLC system, the problems that due to the fact that traditional equipment depends on manual adjustment, the grain breakage rate is high, threshing is not thorough, and blocking is caused are solved, the operation loss rate and energy consumption are remarkably reduced, and the corn direct harvesting efficiency is improved.

The application discloses a combine harvester with a material differentiation processing function, which comprises a walking chassis, a ploughing and harvesting assembly, a material conveying assembly and a threshing and cleaning assembly arranged in sequence from front to back on the walking chassis; the threshing and cleaning assembly comprises a threshing device and a cleaning device arranged in an up-down mode; the cleaning device comprises a sieve body and a driving main shaft for vibrating the sieve body; the number of the sieve bodies is at least three, and all the sieve bodies are closely arranged in the axial direction of the driving main shaft; a driving member is connected between the driving main shaft and each sieve body, and the specifications of the driving members connected with the sieve bodies at different positions are different, so that the vibration parameters of the sieve bodies at different positions are different. In the application, the structural design of the cleaning device can fully meet the distribution characteristics that the materials falling from the threshing cylinder of the threshing device are more on both sides and less in the middle, and targeted screening processing of the differentially distributed materials is realized.

The utility model relates to the technical field of agricultural machinery, in particular to a re-threshing device and a harvester. The re-threshing device comprises a toothed plate assembly, a toothed plate seat assembly, a rotary connecting seat and an adjusting seat; the rotary connecting seat and the adjusting seat are both arranged on the toothed plate seat assembly; one end of the toothed plate assembly is rotationally connected with the toothed plate seat assembly through a rotary connecting seat; the other end of the toothed plate assembly is detachably connected with the toothed plate seat assembly through the adjusting seat, and the angle between the toothed plate assembly and the toothed plate seat assembly can be adjusted. The toothed plate assembly comprises a bottom plate and a plurality of threshing toothed plates, and the threshing toothed plates are arranged on the same side of the bottom plate; the toothed plate base assembly is provided with a plurality of adjusting grooves, and the threshing toothed plate penetrates through the adjusting grooves and is used for threshing grains. According to the utility model, the re-threshing device can be used for re-threshing different varieties of rice in different growth states, and diversified operation requirements are met.

The invention provides a corn combine harvester with a large operation range, and relates to the field of corn harvesters. The corn combine harvester with the large operation range comprises a vehicle body and a rack, a header is arranged at the front end of the rack, a spiral conveyor is arranged below the header, and a peeling device is arranged at an outlet of the spiral conveyor. The peeling device comprises a plurality of groups of peeling rollers which are oppositely arranged, each peeling roller comprises a fixed roller and a floating roller, the floating roller can move relative to the fixed roller, and a pressure sensor is embedded in the floating roller. A central controller is arranged in the rack, and the pressure sensor is in signal connection with the central controller. A conveying belt is arranged below the peeling device, and an elevator is arranged on the downstream of the peeling device. The stress state of corncobs is sensed in real time through the pressure sensor, and the central controller dynamically adjusts the gap between the floating roller and the fixed roller according to a pressure signal, so that each corncob obtains matched stripping force, self-adaptive stripping is realized, and the complete stripping rate and the kernel perfectness rate are improved.

A sieve (48, 50) for use in an agricultural harvester (10) includes a framework (112) with a pair of opposed side members (114), and a first cross member (118) extending between the side members (114) at one end of the side members (114). A plurality of louvres (122) extend between the pair of opposed side members (114). A pair of adjustment laths (126) are respectively associated with and movable generally parallel to the side members (114), with each of the adjustment laths (126) also being connected with the plurality of louvres (122). The sieve (48, 50) is characterized by an adjustment arrangement (130, 160) positioned below the plurality of louvres (122). The adjustment arrangement (130, 160) includes an actuator (132, 162) and a frame (134, 164). One end (136) of the actuator (132, 162) is connected to the first cross member (118) and the other end (138) of the actuator (132, 162) is connected to the frame (134, 164). The frame (134, 164) has a pair of outboard ends (146) with each of the outboard ends (146) being connected to a respective one of the adjustment laths (126).

The utility model relates to the technical field of citrus seed extraction, and discloses a citrus hybrid fruit seed extraction device which comprises a collecting box and a control box, the control box is arranged on one side of the collecting box, a mounting seat is fixedly connected to the center of the lower inner wall of the collecting box, and a driving separation structure is arranged on the upper inner wall of the mounting seat. The driving separation structure comprises a servo motor, the output end of the servo motor penetrates through the upper inner wall of the mounting base and extends to the upper end face of the mounting base, a conductive sliding ring is fixedly connected to the end, the conductive sliding ring is sleeved with a separation disc, and an arc-shaped block is fixedly connected to the center of the upper end face of the separation disc; a first vibration net is arranged on the lower portion of the interior of the separation disc on the outer side of the arc-shaped block, and four supporting rods are arranged on the upper end face, close to the edge, of the arc-shaped block in a rectangular mode. According to the utility model, the separation efficiency is improved by driving the separation structure, and the first vibration net and the second vibration net which are obliquely arranged are convenient to quickly separate fruit juice, pulp and seeds.

The application discloses a castor-oil-seed grain harvester integrated with a shelling and cleaning function, which comprises a moving body, a harvesting table part, a material conveying part, a shelling and cleaning part and a collecting box arranged on the moving body; a material output mechanism is connected between the shelling and cleaning part and the collecting box; the shelling and cleaning part comprises a capsule cleaning mechanism and a shelling and cleaning mechanism arranged in an up-down mode; the shelling part of the shelling and cleaning mechanism comprises a feeding hopper, a shelling roller and an arc-shaped extruding plate, and the shelling roller is provided with a spiral protruding part. The capsule cleaning mechanism and the shelling and cleaning mechanism are arranged, the castor-oil-seed capsules are cleaned by the capsule cleaning mechanism first, then the castor-oil-seed capsules are shelled and the seed grains are cleaned by the shelling and cleaning mechanism, the shelling and cleaning difficulty can be effectively reduced, the seed grains with low impurity content are directly obtained and sent into the collecting box, and the shelling roller with the flexible double-spiral protruding structure is used for shelling in the shelling process, so that the shelling process is gentle and the seed grains are not easily damaged.

The invention discloses a picking and threshing harvester for black sesame bundles in hilly and mountainous regions, and belongs to the technical field of agricultural combined harvesting equipment. Comprising a chassis, a box body, a threshing device, a lifting device and a picking device, the box body is fixedly arranged on the chassis, the threshing device is installed in the box body, the lifting device is connected with a feeding opening of the box body, the picking device is arranged at the front end of the lifting device, and the threshing device comprises a baling assembly, a flapping assembly, a rod chain assembly, an active shaking assembly and a transmission assembly. The baling assembly is arranged at a feeding port of the box body, the flapping assembly is arranged behind the baling assembly, the rod chain assembly is arranged below the baling assembly and the flapping assembly, the active shaking assembly is installed on the rod chain assembly, and the transmission assembly is in transmission connection with the baling assembly, the flapping assembly, the rod chain assembly and the active shaking assembly. Segmented harvesting is carried out on the cut and aired black sesame bundles, and the loss rate, the breakage rate and the heterochromatic rate of black sesame seeds are effectively reduced.

The utility model discloses a kind of fresh corn threshing equipment, it is related to agricultural product processing equipment field, the technical scheme of the utility model includes feed cylinder, the feed cylinder is only for single corn axial sliding, the front end of the feed cylinder is provided with threshing structure;The threshing structure includes annular member and the threshing cutter fixed in the annular member;The annular member is coaxially rotating cooperation relative to the feed cylinder, the annular member is driven by motor;The threshing cutter is arranged in the annular member, the blade tip of the threshing cutter extends to the inside of the annular member, the blade tip direction of the threshing cutter is relatively the axis of the annular member and is staggered arrangement, just corn is sent into feed cylinder, and threshing can be realized, and threshing efficiency is high, and it is easy and simple to operate.

The application discloses a concave plate gap adjusting device of a combine harvester, and belongs to the field of agricultural machinery, which comprises a feeding auger, a threshing cylinder, a support, a bearing seat, a follower and a screening assembly. The support is fixedly connected with the bearing seat at both ends. The support is rotatably connected with the feeding auger and the threshing cylinder through the two bearing seats. The end, away from the bearing seat, of the feeding auger is connected with the threshing cylinder. A linear guide groove is correspondingly arranged on the support. The support is connected with the screening assembly through the linear guide groove and cooperates with the guide follower. The end, close to the bearing seat, of the auger is provided with a feeding inlet. The end, close to the bearing seat, of the threshing cylinder is provided with a discharge outlet. The threshing cylinder and the screening assembly are arranged. The gap between the threshing cylinder and the screening assembly can be adjusted through the screening assembly during the threshing process of the threshing cylinder, so that the threshing effect is improved.

The present application relates to the field of corn food processing equipment, in particular to a kind of fresh corn kernel threshing device and its using method, including feed cylinder and mounting bracket, the feed cylinder coaxially fixed in the outer side of the mounting bracket end face, rotating ring is rotationally arranged in the middle of the mounting bracket, multiple groups of tool holders are arranged around the inside of the rotating ring, and multiple groups of holding frames are arranged in the middle of the rotating ring corresponding to the tool holder, and the rotating ring outside is provided with synchronous disc for supporting the holding frame;The outer circumference of the rotating ring is provided with annular mounting groove matched with the mounting bracket, and multiple groups of holding grooves for accommodating the holding frame are vertically penetrated in the middle of the rotating ring. Advantageous effects are that: the present application can adjust the inner diameter of annular cutter formed by multiple groups of tool holders in real time according to the diameter of different corn cobs, and then realize corresponding cutting and threshing of tender corn cobs, without manual sorting for size classification of corn cobs, more convenient to use, and corn kernel is more thoroughly separated, and the effect is better.

The invention relates to the technical field of ricinus communis harvesters, and particularly discloses a ricinus communis harvester which comprises a ricinus communis harvester body, a discharging opening, a baffle, a draught fan, a waste box and a defective product box, the vertically-through discharging opening is formed in the rear portion of the right side of the bottom end of an inner cavity of the ricinus communis harvester body, and the baffle is arranged on the rear portion of the right side of the bottom end of the inner cavity of the ricinus communis harvester body. The rear side of the baffle and the front side of an inner cavity of the discharging opening are located on the same vertical plane, the multiple fans are arranged in the inner cavity of the baffle in the left-right direction, the waste box is detachably arranged on the rear portion of the right side of the bottom end of the inner cavity of the castor harvester, and the waste box is located behind the discharging opening. The defective product box is detachably arranged in the middle of the right side of the bottom end of the inner cavity of the castor harvester and located in front of the baffle. According to the device, the working efficiency and the screening precision are greatly improved, the adaptability and stability under the complex terrain are remarkably enhanced, and powerful support is provided for modernized transformation of the castor industry.

The utility model discloses a kind of Chinese cabbage seed rapid collection devices, it is related to Chinese cabbage seed collection technical field, including collection box, the inside of collection box is provided with collection bin, the inside of collection bin is provided with screening structure, hinged door is hinged to the one side of collection box, threshing structure is provided on the hinged door, the threshing structure is used to make fruit pod from Chinese cabbage plant drop off, fruit pod skin is separated from Chinese cabbage seed, the threshing structure includes threshing bin, the threshing bin is opened on the hinged door, the upper side of the threshing bin is fixedly connected with threshing box, the inside of the threshing box is fixedly connected with fixed plate and slidingly connected moving plate, the side adjacent of the fixed plate and the moving plate is fixedly connected with tooth block, the inside of the threshing box is fixedly connected with symmetrical slide rod;The threshing structure set up can separate Chinese cabbage and Chinese cabbage seed, avoid the problem that Chinese cabbage and Chinese cabbage seed are more complicated to rub open manually.

The invention relates to the technical field of green soy bean harvesters, and discloses a portable green soy bean harvester which comprises a flapping assembly, a supporting leg, a base fixed to the top of the supporting leg, a machine shell fixed to the top of the base, a feeding plate arranged on one side of the base, a supporting arm fixed to the interior of the machine shell, and a first rotating roller rotationally connected to the interior of the supporting arm. And a second rotating roller is rotationally connected into the other supporting arm, and beating rods are fixed to the surfaces of the first rotating roller and the second rotating roller correspondingly. The device has the advantages that automatic conveying and clamping are achieved, manpower is saved, waiting is avoided, in the separating assembly, green soybean plant stalks can be automatically clamped and conveyed through a conveying belt, a clamping base and a clamping cover of a conveying piece, an extrusion plate and an extrusion wheel of a matched extrusion piece and a blocking rod of an auxiliary piece, and manual hand holding is not needed; the plants are driven to move in the machine shell in the conveying process, the beating assembly is matched for operation, the waiting time for manually placing and taking the plants is saved, and the continuous operation efficiency is improved.

The invention provides a state monitoring and self-adaptive regulation and control system for materials in a cleaning chamber of a harvester, and belongs to the technical field of agricultural machinery and control systems thereof. A plurality of vibration acceleration sensors are arranged at the bottom of the upper cleaning sieve and below the baffle at the tail of the sieve, are connected with the controller and are used for monitoring the thickness of materials in different sections on the surface of the upper cleaning sieve in real time, so that step-by-step and progressive thickness monitoring is realized. Meanwhile, the system achieves final real-time monitoring of cleaning loss on the basis of signals generated when grains hit a baffle at the tail of a sieve, so that the risk that cleaning load exceeds the limit due to the fact that the feeding amount of a front blanking area is too large or the initial impurity rate of materials is too high can be recognized in time, and then early warning is given out and active intervention is conducted. The system adjusts the advancing speed of the harvester, the working frequency of the upper cleaning screen, the air speed of the cleaning fan and the angle of the tail baffle of the screen in a linkage mode according to the thickness monitoring result and the loss monitoring signal of the tail baffle of the screen, closed-loop control is formed, the cleaning process is optimized, and grain loss is remarkably reduced.

The invention relates to the technical field of corn harvesters, and discloses a corn harvester with a low-loss threshing structure.The corn harvester comprises a machine body, a threshing shell is installed on one side of the top of the machine body, a threshing mechanism is arranged in the threshing shell, and the threshing mechanism comprises a corn kernel bin; the outer wall of the corn kernel bin is fixedly connected to the inner wall of the threshing shell, a material bin is arranged in the corn kernel bin, a fixing block is installed on the inner wall of the bottom of the material bin, a fixing base is rotationally connected to the top end of the fixing block, and a cylinder is fixedly connected to the top of the fixing base; the inner wall of the bottom of the threshing shell is fixedly connected with a supporting frame. According to the corn thresher, the hammer head rotating at a high speed is adopted, and an air blowing mechanism and a vibration mechanism in the auxiliary threshing assembly are combined, so that the flowing speed of corn in the barrel is effectively increased, the staying time of the corn in the barrel is shortened, the breakage rate of corn kernels is reduced, and the commodity quality and the subsequent processing and utilization value of the corn kernels are effectively improved.