A longitudinal axis flow type combine harvester drop-out distribution state adjusting device, an adaptive control method and a combine harvester

Abstract

The application discloses a longitudinal axis flow type combined harvester detached object distribution state adjusting device, a self-adaptive control method and a combined harvester. The adjusting device comprises a longitudinal axis flow threshing device, a detached object distribution state adjusting mechanism, a detached object distribution state monitoring module, a cleaning screen arranged below the longitudinal axis flow threshing device, and a detached object distribution state self-adaptive control module. The detached object distribution state adjusting mechanism is arranged between the longitudinal axis flow threshing device and the cleaning screen, and comprises a rotary driving mechanism, an adjusting rotating piece, a rotating shaft support, a sliding rail and an up-down driving mechanism. The adjusting rotating piece is movable in the up-down direction and the inclination angle thereof is independently adjustable. The detached object distribution shape, the detached object weight distribution and the detached object separation speed of each region are monitored in real time based on the detached object distribution state monitoring module. The up-down position and the inclination angle of the adjusting rotating piece are adaptively controlled and adjusted, so that the detached objects are uniformly distributed in each region.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural equipment, and particularly relates to a longitudinal axial flow type combine harvester discharge distribution state adjusting device, an adaptive control method and a combine harvester. BACKGROUND

[0002] The cleaning device of the combine harvester is a core working component for determining the working parameters and operation efficiency of the combine harvester. When the combine harvester is working, the material is transported to the longitudinal axial flow threshing cylinder device for threshing and separation. The threshed and separated discharge falls through the concave screen holes to the vibrating screen, and finally the rice stems are discharged from the tail of the longitudinal axial flow cylinder. The discharge is cleaned by the combined action of the vibrating screen vibration and the cleaning fan, the cleaned grains are transported to the grain tank, and the residues are blown out of the cleaning chamber. However, due to the influence of the side wall of the machine box and the turning of the cylinder, the discharge under the threshing device is not uniformly distributed, and the overall distribution in the transverse direction of the vibrating screen presents a situation of more on both sides and less in the middle. Due to the excessive accumulation of the discharge on both sides, the effect of separating impurities from grains by the cleaning fan is greatly reduced.

[0003] At present, the Chinese patent CN201611002803 discloses a "rice and wheat threshing device concave screen", which can adjust the size of the screen hole according to the harvesting condition, so as to change the distribution of the discharge on the vibrating screen. However, too small screen hole affects the threshing and separation efficiency, and too large screen hole greatly increases the discharge residues. The Chinese patent CN201710449702.1 discloses a "return conveying uniform distribution system matched with a longitudinal axial flow threshing and separating device", which is installed with a return conveying belt between the longitudinal axial flow cylinder and the vibrating cleaning screen, and a plurality of shunt bars are installed on the machine wall below the longitudinal axial flow cylinder. By changing the angle of the shunt bar, the thickness of the discharge layer on the return conveying belt is controlled, so that the discharge falling on the vibrating cleaning screen is more flat, and the cleaning performance is improved. However, the device increases the time of separating the discharge to the cleaning screen, and the discharge is concentrated in front of the cleaning screen, which makes the utilization rate of the cleaning device low, and greatly reduces the cleaning efficiency. SUMMARY

[0004] In view of the problems of excessive accumulation of the discharge on both sides of the existing cleaning and threshing device and / or low threshing and separation efficiency, the present application provides a longitudinal axial flow type combine harvester discharge distribution state adjusting device, an adaptive control method and a combine harvester. The discharge distribution state adjusting device is provided with a plurality of adjusting vanes, the up and down positions of which are movable, the inclination angles of which are individually adjustable, and the discharge distribution shape, discharge weight distribution and discharge separation speed of each region are monitored in real time based on a discharge distribution state monitoring module. The up and down positions and inclination angles of the adjusting vanes are adaptively controlled and adjusted, so that the discharge is uniformly distributed in each region.

[0005] The technical scheme adopted by the present application is as follows:

[0006] A longitudinal axis flow type combine harvester detached object distribution state adjusting device, comprising a longitudinal axis flow type threshing device, a detached object distribution state adjusting mechanism, a detached object distribution state monitoring module, a cleaning screen installed below the longitudinal axis flow type threshing device, and a detached object distribution state self-adaptive control module;

[0007] The detached object distribution state adjusting mechanism is located between the longitudinal axis flow type threshing device and the cleaning screen, and comprises a rotary driving mechanism, an adjusting vane, a rotating shaft support, a slide rail, and an up-down driving mechanism.

[0008] The detached object distribution state monitoring module comprises a visual monitoring sensor, a stress monitoring sensor, and a speed monitoring sensor.

[0009] The detached object distribution state self-adaptive control module is connected with the detached object distribution state monitoring module, the rotary driving mechanism, and the up-down driving mechanism, is used for storing a detached object distribution state model library, acquiring collected detached object distribution shape, weight distribution, and detached object separation speed data, obtaining a detached object distribution model on the cleaning screen according to the detached object distribution state model library, calculating detached object distribution uniformity, and issuing a control instruction to the rotary driving mechanism and the up-down driving mechanism based on the detached object distribution uniformity.

[0010] Further, the rotating shafts at both ends of the adjusting vane are installed on the rotating shaft support through bearings, the rotary driving mechanism comprises a first motor and a transmission structure, and the transmission structure is one of a belt transmission, a chain transmission, or a gear transmission.

[0011] Further, the up-down driving mechanism is a gear and rack driving mechanism, a pulley driving mechanism, or a screw structure.

[0012] Further, the pulley driving mechanism comprises a driving pulley, a driven pulley, a belt, and a second motor, a set of driving pulleys and driven pulleys are rotatably installed on one slide rail and are meshed and connected with one belt, the driving pulley is driven to rotate by the second motor, and the rotating shaft supports are fixed at both ends of the two belts.

[0013] Further, the driving wheel and the driven wheel are installed on the slide rail through the slide rail top connector and the slide rail bottom connector respectively, the slide rail top connector and the slide rail bottom connector are fixed on the slide rail, and the circular shafts are rotationally arranged between the slide rail top connector, the slide rail bottom connector and the slide rail, the two circular shafts are fixed with the center of the driving wheel and the driven wheel respectively, and the circular shaft on the driving wheel is fixed with the output end of the second motor.

[0014] The both ends of the rotating shaft support are fixed with the slide blocks through the slide block connectors, and the slide blocks are fixed on the belt.

[0015] Further, the longitudinal axial flow threshing device comprises a longitudinal axial flow threshing cylinder, top covers, concave screens and rack side plates which are respectively installed above, below and on the sides of the longitudinal axial flow threshing cylinder.

[0016] The slide rail is installed on the rack side plate through the slide rail top connector and the slide rail bottom connector.

[0017] Further, the length of the adjusting rotating piece is the same as that of the cleaning screen, and the rotating shaft support is perpendicular to the direction of the cleaning screen piece.

[0018] The maximum moving distance of the rotating shaft support on the slide rail is set according to different models and different working environment requirements.

[0019] An adaptive control method of the longitudinal axial flow combined harvester threshing-out material distribution state adjustment device comprises the following steps:

[0020] S1. First, collect data through bench test, and establish a threshing-out material distribution state model library according to the distribution shape, weight distribution and separation speed of the threshing-out material in the test;

[0021] S2. When the longitudinal axial flow threshing device is working, the visual monitoring sensor, the stress monitoring sensor and the speed monitoring sensor monitor the distribution shape, weight distribution and separation speed of the threshing-out material in real time and feed back to the threshing-out material distribution state adaptive control module, the threshing-out material distribution state adaptive control module compares the feedback data with the threshing-out material distribution state model library to obtain a distribution model of the threshing-out material on the cleaning screen;

[0022] S3. The threshing-out material distribution state adaptive control module splits the obtained distribution model into several regions separated by adjusting rotating pieces to obtain the distribution state of each region, and calculates the uniformity between the distribution states of the regions by using a statistical method;

[0023] S4. The threshing-out material distribution state adaptive control module sends a control instruction to the rotary driving mechanism according to the uniformity between the distribution states of the regions, adjusts the angle of the adjusting rotating piece to change the moving direction, quantity and speed of the separated threshing-out material in each region, and improves the uniformity between the distribution states of the regions;

[0024] S5. Repeat steps S2-S4, eventually making the discharges uniformly distributed in the areas separated by the adjusting vanes on the cleaning screen.

[0025] Further, in step S4, the discharge distribution state adaptive control module can issue a control instruction to the up-down driving mechanism to adjust the horizontal height of the adjusting vanes to improve the uniformity between the distribution states of the areas if adjusting the angle of the adjusting vanes alone cannot achieve the effect of uniform distribution of the discharges.

[0026] A combine harvester comprising the longitudinal axial flow combine harvester discharge distribution state adjusting device.

[0027] The present application has the following advantages:

[0028] In the present application, the discharge distribution state adjusting mechanism is arranged between the longitudinal axial flow threshing device and the cleaning screen, and the up-down positions of the multiple adjusting vanes on the discharge distribution state adjusting mechanism are movable and the tilting angles of the adjusting vanes are individually adjustable, so that the distribution states of the discharges in the areas separated by the adjusting vanes can be individually controlled. The discharge distribution state adaptive control module monitors the discharge distribution shape, discharge weight distribution, and discharge separation speed of each area in real time based on the discharge distribution state monitoring module, calculates the discharge distribution uniformity, and issues a control instruction to the rotary driving mechanism and the up-down driving mechanism based on the discharge distribution uniformity of each area to adaptively control the tilting angle and the overall height of each adjusting vane, so that the discharges are uniformly distributed in each area, and the adjustment efficiency and the automation degree of the discharge distribution state are greatly improved. In addition, dynamic adjustment is performed by the discharge distribution state adaptive control module to ensure that the discharge distribution state adjusting effect is good when the threshing cylinder is tilted or the rotation speed is different.

[0029] In the present application, the parts of the threshing and cleaning device are modularized and segmented, which is easy to install and low in cost. The core component is the discharge distribution state adjusting mechanism, which only needs to be installed on the existing threshing and cleaning device to improve the cleaning efficiency and upgrade the existing combine harvester. It is not necessary to purchase new equipment to improve the cleaning efficiency, which greatly saves the economic cost. The components of the present application can be designed, produced, transported, maintained, and replaced independently of each other, and the assembly and disassembly are simple and easy to operate, and the assembly and disassembly time is less, which greatly saves the production cost and use cost of each component. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a structure perspective view of the longitudinal axial flow combine harvester discharge distribution state adjusting device according to the present application.

[0031] Figure 2It is a front view of the longitudinal axis flow type combine harvester discharge distribution state adjusting device structure of the present application.

[0032] Figure 3 It is a left view of the longitudinal axis flow type threshing device of the present application.

[0033] Figure 4 It is a front view of the longitudinal axis flow type threshing device of the present application.

[0034] Figure 5 It is a perspective view of the discharge distribution state adjusting mechanism of the present application.

[0035] Figure 6 It is a top view of the discharge distribution state adjusting mechanism of the present application.

[0036] Figure 7 It is a work flow chart of the discharge distribution state adaptive control module of the present application.

[0037] In the figure, 1. Longitudinal axis flow type threshing device, 101. Top cover, 102. Longitudinal axis flow type threshing cylinder, 103. Concave sieve, 104. Frame side plate, 2. Discharge distribution state adjusting mechanism, 201. First motor, 202. Adjusting rotating piece, 203. Rotating shaft, 204. Rotating shaft support, 205. Bearing, 206. First gear, 207. Second gear, 208. Gear box, 209. Slider connecting piece, 210. Slider, 211. Slide rail, 212. Slide rail top connecting piece, 213. Slide rail bottom connecting piece, 214. Driving wheel, 215. Belt, 216. Second motor, 3. Discharge distribution state monitoring module, 301. Visual monitoring sensor, 302. Stress monitoring sensor, 303. Speed monitoring sensor, 4. Cleaning sieve, 5. Discharge distribution state adaptive control module. DETAILED DESCRIPTION

[0038] The present application will be further described in detail below with specific embodiments and accompanying drawings, but the protection scope of the present application is not limited thereto.

[0039] Example one

[0040] Figures 1-2 An embodiment of the longitudinal axis flow type combine harvester discharge distribution state adjusting device of the present application comprises a longitudinal axis flow type threshing device 1, a discharge distribution state adjusting mechanism 2, a discharge distribution state monitoring module 3, a cleaning sieve 4 installed below the longitudinal axis flow type threshing device 1, and a discharge distribution state adaptive control module 5.

[0041] The longitudinal axis flow type threshing device comprises a longitudinal axis flow type threshing cylinder 102, a top cover 101, a concave sieve 103 and a frame side plate 104 installed above, below and on the side of the longitudinal axis flow type threshing cylinder 102, respectively, and a discharge distribution state adjusting mechanism 2 installed below the longitudinal axis flow type threshing cylinder 102. Figure 3 andFigure 4 The concave screen 103 surrounds the lower half of the longitudinal axis flow threshing cylinder 102 without contact between them, and the material falls down after being threshed by the longitudinal axis flow threshing cylinder 102 and the concave screen 103. The top cover 101 is used to prevent the material from being thrown out from above by the rotating longitudinal axis flow threshing cylinder 102, and the rack side plate 104 is used to fix the installation of the threshed material distribution state adjusting mechanism 2 and the cleaning screen 4.

[0042] The threshed material distribution state adjusting mechanism 2 is located between the longitudinal axis flow threshing device 1 and the cleaning screen 4, and the upper surface of the threshed material distribution state adjusting mechanism 2 is located below the center of the longitudinal axis flow threshing cylinder 102, and the threshed material distribution state adjusting mechanism 2 is located above the top surface of the cleaning screen 4. As shown in Figures 5-6 The threshed material distribution state adjusting mechanism 2 includes a rotary drive mechanism, an adjusting rotating piece 202, a rotating shaft support 204, a slide rail 211, and an up-down drive mechanism. Four slide rails 211 are vertically arranged, and the slide rails 211 are installed on the rack side plate 104 through a slide rail top connector 212 and a slide rail bottom connector 213. Two rotating shaft supports 204 are arranged in parallel, and the two ends are slidably installed on the two slide rails 211, and are driven to slide on the slide rails 211 by the up-down drive mechanism. The up-down drive mechanism is one of a gear and rack drive mechanism, a belt drive mechanism, or a lead screw structure. The belt drive mechanism includes a driving wheel, a driven wheel, a belt 215, and a second motor 216. A set of driving wheels and driven wheels are rotatably installed on a slide rail 211 and are meshed and connected with a belt 215. The driving wheel is driven to rotate by the second motor 216, and the two ends of each rotating shaft support 204 are fixed on two belts 215.

[0043] Specifically, the driving wheel and the driven wheel are installed on the slide rail 211 through the slide rail top connecting piece 212 and the slide rail bottom connecting piece 213 respectively, the slide rail top connecting piece 212 and the slide rail bottom connecting piece 213 are fixed on the slide rail 211, and the circular shafts are rotationally arranged between the slide rail top connecting piece 212, the slide rail bottom connecting piece 213 and the slide rail 211, the two circular shafts are fixed with the centers of the driving wheel and the driven wheel respectively, the circular shaft on the driving wheel is fixed with the output end of the second motor 216, the driving wheel is driven to rotate by the second motor 216, then the belt 215 is moved, and the shaft support 204 is moved up and down. The maximum moving distance of the shaft support 204 on the slide rail 211 is set according to different machine types and different working environment requirements, in the embodiment, the maximum moving distance of the shaft support 204 on the slide rail 211 is 600 mm, that is, the plane composed of the adjusting vane 202 and the shaft support 204 can move up and down along the slide rail 211 in the vertical direction, and the movable distance is 0 mm-600 mm. Specifically, the shaft support 204 is fixedly connected with the slide block 210 through the slide block connecting piece 209 at both ends, the slide block 210 is fixed on the belt 215, and the slide block 210 has a through hole for penetrating through the belt 215 and being fixed, so as to realize the installation of the shaft support 204 on the belt 215, when the belt 215 moves, the shaft support 204 can be driven to move along the belt 215 synchronously, so as to adjust the height of the adjusting vane 202. The slide rail 211 is installed on the rack side plate 104 through the slide rail top connecting piece 212 and the slide rail bottom connecting piece 213 at both ends, specifically, the slide rail top connecting piece 212 and the slide rail bottom connecting piece 213 are provided with mounting holes, the slide rail top connecting piece 212 and the slide rail bottom connecting piece 213 are fixedly installed on the rack side plate 104 through bolts, and then the installation between the detached object distribution state adjusting mechanism 2 and the longitudinal axial flow threshing device 1 is realized.

[0044] A plurality of the adjustment vane 202 is arranged in parallel, both ends rotatably mounted on two rotating shaft support 204, and each adjustment vane 202 is driven to rotate by a rotating drive mechanism. Specifically, the adjustment vane 202 is provided with a rotating shaft 203 at both ends, and the left and right ends of the adjustment vane 202 are connected with the inner end groove of the rotating shaft 203, and the adjustment vane 202 and the rotating shaft 203 are fixed by bolts. The rotating shaft 203 is rotatably connected with the rotating shaft support 204 through the bearing 205, and the rotating shaft support 204 is uniformly provided with a plurality of through holes, each of which is provided with a bearing 205, and the outer circumferential surface of the rotating shaft 203 is connected with the inner ring of the bearing 205, so that the rotating shaft 203 is rotatably mounted on the rotating shaft support 204. The rotating drive mechanism includes a first motor 201 and a transmission structure, which is one of belt transmission, chain transmission or gear transmission, and is driven by the first motor 201 to rotate the adjustment vane 202. The gear transmission includes first gear 206 and second gear 207 which are engaged with each other, and the first gear 206 and the second gear 207 are located in the gear box 208, the first gear 206 is fixed on the output end of the first motor 201, and the second gear 207 is fixed on one end of the rotating shaft 203 away from the adjustment vane 202. When the first motor 201 works, the first gear 206 rotates, and the power is transmitted through the first gear 206-second gear 207 to drive the rotating shaft 203 to rotate, thereby adjusting the angle of the adjustment vane 202. The length of the adjustment vane 202 is the same as the length of the cleaning screen 4, so that the adjustment vane 202 can adjust the distribution state of the detached material in the length direction of the cleaning screen 4. The rotating shaft support 204 is perpendicular to the direction of the screen piece of the cleaning screen 4.

[0045] The detached material distribution state monitoring module 3 includes a visual monitoring sensor 301, a stress monitoring sensor 302 and a speed monitoring sensor 303. The visual monitoring sensor 301 is installed on the rack side plate 105 and faces the detached material on the cleaning screen 4, and is used for monitoring the distribution shape of the detached material on the cleaning screen 4. The stress monitoring sensor 302 is provided in a plurality of numbers and uniformly distributed on the upper surface of the cleaning screen 4, and is used for monitoring the weight distribution of the detached material on the cleaning screen 4. The speed monitoring sensor 303 is installed on the rack side plate 105 and faces the detached material in the falling process, and is used for monitoring the separation speed of the detached material.

[0046] The exudate distribution state adaptive control module 5 is connected with the exudate distribution state monitoring module 3, the rotary driving mechanism and the up-down driving mechanism, is used for storing an exudate distribution state model library, acquiring collected exudate distribution shapes, weight distribution and exudate separation speed data, obtaining an exudate distribution model on the cleaning screen 4 according to the exudate distribution state model library, calculating exudate distribution uniformity, issuing a control instruction to the rotary driving mechanism based on the exudate distribution uniformity, adjusting the angle of the adjusting vane 202 to change the moving direction, quantity and speed of exudate separation falling in each region, and issuing a control instruction to the up-down driving mechanism to adjust the horizontal height of the adjusting vane 202 to change the quantity and speed of exudate separation falling in each region, thereby improving the uniformity between the distribution states of each region.

[0047] In combination Figure 7 The adaptive control method of the longitudinal axial flow combined harvester exudate distribution state adjusting device provided by the application comprises the following steps:

[0048] S1. First, collect sufficient data through bench test, and establish an exudate distribution state model library according to the exudate distribution shape, exudate weight distribution and exudate separation speed in the test.

[0049] S2. When the longitudinal axial flow threshing device 1 is working, the visual monitoring sensor 301, the stress monitoring sensor 302 and the speed monitoring sensor 303 monitor the exudate distribution shape, the exudate weight distribution and the exudate separation speed in real time and feed back to the exudate distribution state adaptive control module 5, the exudate distribution state adaptive control module 5 compares the feedback data with the exudate distribution state model library to obtain the distribution model of the exudate on the cleaning screen 4.

[0050] S3. The exudate distribution state adaptive control module 5 splits the obtained distribution model into several regions separated by the adjusting vane 202 to obtain the exudate distribution state of each region, and calculates the uniformity between the distribution states of each region by using a statistical method.

[0051] S4. The exudate distribution state adaptive control module 5 issues a control instruction to the rotary driving mechanism according to the uniformity between the distribution states of each region to adjust the angle of the adjusting vane 202 to change the moving direction, quantity and speed of exudate separation falling in each region, thereby improving the uniformity between the distribution states of each region; only adjusting the angle of the adjusting vane 202 cannot achieve the effect of uniform exudate distribution, and a control instruction can also be issued to the up-down driving mechanism to adjust the horizontal height of the adjusting vane 202 to improve the uniformity between the distribution states of each region.

[0052] S5. Repeat steps S2-S4 to finally make the exudate uniformly distributed in each region separated by the adjusting vane 202 on the cleaning screen 4.

[0053] The longitudinal axis flow type combine harvester detached object distribution state adjustment device, the longitudinal axis flow threshing device is installed above the concave sieve, the detached object distribution state adjustment mechanism 2 is installed between the concave sieve 103 and the cleaning sieve 4, and the up and down positions of the plurality of adjustment vanes 202 on the detached object distribution state adjustment mechanism 2 are movable, and the inclination angles can be individually adjusted; the detached object distribution state monitoring module 3 is installed on the rack side plate 104 and the cleaning sieve 4, when the combine harvester device works, the grains pass through the concave sieve 103 of the longitudinal axis flow threshing cylinder and the detached object distribution state adjustment mechanism 2, and reach the cleaning sieve 4. The detached object distribution state monitoring module 3 respectively monitors the detached object distribution shape, the detached object weight distribution and the detached object separation speed through the visual monitoring sensor 301, the stress monitoring sensor 302 and the speed monitoring sensor 303, and combines the distribution model of the detached object on the cleaning sieve 4 established through the previous bench test, analyzes the parameters such as the detached object distribution shape, the detached object weight distribution and the detached object separation speed collected by the detached object distribution state monitoring module 3, analyzes the distribution state of the detached object on the cleaning sieve under the most ideal state, and adjusts the angle of the adjustment vane 202 through the first motor 201, so that the detached object is uniformly distributed in each region. If the adjustment of the angle of the adjustment vane 202 cannot achieve the effect of uniform distribution of the detached object, the height of the plane where the adjustment vane 202 is located is adjusted through the second motor 216, until the detached object is uniformly distributed on the cleaning sieve 4, that is, the distribution of the detached object on the cleaning sieve 4 maintains a relatively flat state, which is beneficial to the separation of the grains and the residues by the fan. In addition, the angle of the adjustment vane 202 and the height of the plane where the adjustment vane 202 is located can also be adjusted by simultaneously controlling the first motor 201 and the second motor 216, so that the distribution of the detached object on the cleaning sieve 4 maintains a relatively flat state, that is, the detached object is uniformly distributed in each region. Then the cleaning sieve 4 vibrates and the fan works at the same time, the grains are left, and the residues are blown out of the threshing device, thereby achieving the effect of improving the cleaning efficiency. In addition, dynamic adjustment is carried out through the detached object distribution state self-adaptive control module 5, so as to ensure that the detached object distribution state adjustment effect is good when the threshing cylinder is inclined or the rotation speed is different.

[0054] Example two

[0055] The combine harvester comprises the longitudinal axis flow type combine harvester detached object distribution state adjustment device described in example one.

[0056] The examples are preferred embodiments of the present application, but the present application is not limited to the above embodiments, and any obvious improvements, replacements or modifications made by those skilled in the art without departing from the essential content of the present application shall fall within the protection scope of the present application.

Claims

1. A longitudinal axial flow combine take-off distribution condition adjustment device, characterized by: The device comprises a longitudinal axial flow threshing device (1), a threshing product distribution state adjusting mechanism (2), a threshing product distribution state monitoring module (3), a cleaning screen (4) installed below the longitudinal axial flow threshing device (1), and a threshing product distribution state self-adaptive control module (5). The threshing product distribution state adjusting mechanism (2) is located between the longitudinal axial flow threshing device (1) and the cleaning screen (4) and comprises a rotary driving mechanism, an adjusting vane (202), a shaft support (204), a slide rail (211), and an up-down driving mechanism. The four slide rails (211) are vertically arranged, and the two shaft supports (204) are arranged in parallel and slidably mounted on the two slide rails (211) at both ends, and driven to slide on the slide rails (211) by the up-down driving mechanism. A plurality of adjusting vanes (202) are arranged in parallel and rotatably mounted on the two shaft supports (204) at both ends, and each adjusting vane (202) is independently driven to rotate by a rotary driving mechanism. The threshing product distribution state monitoring module (3) comprises a visual monitoring sensor (301), a stress monitoring sensor (302), and a speed monitoring sensor (303). The visual monitoring sensor (301) is installed on the rack side plate (105) and used for monitoring the distribution shape of the threshing product on the cleaning screen (4). The stress monitoring sensor (302) is uniformly distributed on the upper surface of the cleaning screen (4) and used for monitoring the weight distribution of the threshing product on the cleaning screen (4). The speed monitoring sensor (303) is installed on the rack side plate (105) and used for monitoring the separation speed of the threshing product. The threshing product distribution state self-adaptive control module (5) is connected with the threshing product distribution state monitoring module (3), the rotary driving mechanism, and the up-down driving mechanism, used for storing a threshing product distribution state model library, acquiring the collected distribution shape, weight distribution, and separation speed data of the threshing product, obtaining a distribution model of the threshing product on the cleaning screen (4) according to the threshing product distribution state model library, calculating the uniformity of the threshing product distribution, and issuing a control instruction to the rotary driving mechanism and the up-down driving mechanism based on the uniformity of the threshing product distribution. The visual monitoring sensor (301), the stress monitoring sensor (302), and the speed monitoring sensor (303) monitor the distribution shape, weight distribution, and separation speed of the threshing product in real time and feed back to the threshing product distribution state self-adaptive control module (5). The threshing product distribution state self-adaptive control module (5) compares the feedback data with the threshing product distribution state model library to obtain the distribution model of the threshing product on the cleaning screen (4). The ejection object distribution state adaptive regulation module (5) splits the obtained distribution model into several areas separated by the adjusting turntable (202), obtains the ejection object distribution state of each area, calculates the uniformity between the distribution states of each area by using a statistical method, and sends a control instruction to the rotary drive mechanism according to the uniformity between the distribution states of each area, adjusts the angle and / or height of the adjusting turntable (202) to change the moving direction, quantity and speed of the ejection object separation and falling in each area, improves the uniformity between the distribution states of each area, and finally makes the ejection objects uniformly distributed in each area separated by the adjusting turntable (202) on the cleaning screen (4).

2. The longitudinal axial flow combine take-off distribution condition adjustment device according to claim 1, characterized in that, The shaft (203) at both ends of the adjusting turntable (202) is installed on the shaft support (204) through a bearing (205), and the rotary drive mechanism includes a first motor (201) and a transmission structure, which is one of belt transmission, chain transmission or gear transmission.

3. The longitudinal axial flow combine take-off distribution condition adjustment device of claim 1, wherein, The up-down drive mechanism is a gear rack drive mechanism, a pulley drive mechanism or a screw structure.

4. The longitudinal axial flow combine take-off distribution condition adjustment device according to claim 3, characterized by, The pulley drive mechanism includes a driving pulley, a driven pulley, a belt (215) and a second motor (216), a group of driving pulleys and driven pulleys are rotatably installed on a slide rail (211) and are meshed and connected with a belt (215); the driving pulley is driven to rotate by the second motor (216), and each shaft support (204) is fixed at both ends of the two belts (215).

5. The longitudinal axial flow combine take-off distribution condition adjustment device according to claim 4, characterized by, The driving pulley and the driven pulley are respectively installed on the slide rail (211) through the slide rail top connector (212) and the slide rail bottom connector (213), the slide rail top connector (212) and the slide rail bottom connector (213) are fixed on the slide rail (211), and a circular shaft is rotatably arranged between the slide rail top connector (212), the slide rail bottom connector (213) and the slide rail (211), the two circular shafts are respectively fixed with the centers of the driving pulley and the driven pulley, and the circular shaft on the driving pulley is fixed with the output end of the second motor (216); The shaft support (204) is fixedly connected with the slide block (210) through the slide block connector (209) at both ends, and the slide block (210) is fixed on the belt (215).

6. The longitudinal axial flow combine harvester threshing and outfeed distribution adjustment apparatus of claim 1 wherein, The longitudinal axis flow threshing device includes a longitudinal axis flow threshing cylinder (102), top covers (101) installed above, below and on the side of the longitudinal axis flow threshing cylinder (102), a concave screen (103) and a rack side plate (104); The slide rail (211) is installed on the rack side plate (104) through the slide rail top connector (212) and the slide rail bottom connector (213).

7. The longitudinal axial flow combine harvester threshing and outfeed distribution adjustment apparatus of claim 1 wherein, The length of the adjusting turntable (202) is the same as the length of the cleaning screen (4), and the shaft support (204) is perpendicular to the direction of the screen pieces of the cleaning screen (4). The maximum moving distance of the shaft support (204) on the slide rail (211) is set according to different machine models and different working environment requirements.

8. The method of adaptive regulation of the longitudinal axial flow combine harvester threshing and outcrop distribution state adjustment device according to any one of claims 1-7, characterized in that, The method comprises the following steps: S1. First, collect data through bench test, and establish an ejection object distribution state model library according to the ejection object distribution shape, ejection object weight distribution and ejection object separation speed in the test; S2. When the longitudinal axis flow threshing device (1) is working, the visual monitoring sensor (301), the stress monitoring sensor (302), and the speed monitoring sensor (303) monitor the distribution shape of the threshed material, the weight distribution of the threshed material, and the separation speed of the threshed material in real time and feed back to the threshed material distribution state adaptive control module (5). The threshed material distribution state adaptive control module (5) compares the feedback data with the threshed material distribution state model library to obtain the distribution model of the threshed material on the cleaning screen (4); S3. The threshed material distribution state adaptive control module (5) splits the obtained distribution model into several regions separated by the adjusting vane (202) to obtain the distribution state of each region and calculates the uniformity between the distribution states of each region by using a statistical method; S4. The threshed material distribution state adaptive control module (5) sends control instructions to the rotary driving mechanism according to the uniformity between the distribution states of each region to adjust the angle of the adjusting vane (202) to change the moving direction, quantity, and speed of the separated threshed material in each region and improve the uniformity between the distribution states of each region; S5. Steps S2-S4 are repeated to finally make the threshed material uniformly distributed in each region separated by the adjusting vane (202) on the cleaning screen (4).

9. The adaptive regulation method of claim 8, wherein, In step S4, the threshed material distribution state adaptive control module (5) sends control instructions to the up-down driving mechanism while adjusting the angle of the adjusting vane (202) according to the uniformity between the distribution states of each region to adjust the horizontal height of the adjusting vane (202) and improve the uniformity between the distribution states of each region.

10. A combine harvester characterized by The longitudinal axis flow combined harvester threshed material distribution state adjusting device according to any one of claims 1-7.

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