Longitudinal axial flow type combine harvester threshed object distribution state adjusting device, self-adaptive regulation and control method and combine harvester

Abstract

The invention discloses a longitudinal axial flow type combine harvester threshed object distribution state adjusting device, a self-adaptive regulation and control method and a combine harvester. The adjusting device comprises a longitudinal axial flow threshing device, a threshed object distribution state adjusting mechanism, a threshed object distribution state monitoring module, a sorting sieve installed below the longitudinal axial flow threshing device and a threshed object distribution state self-adaptive regulation and control module. The threshed object distribution state adjusting mechanism is located between the longitudinal axial flow threshing device and the sorting sieve and comprises a rotary driving mechanism, an adjusting rotor, a rotating shaft support, a sliding rail and an up-down driving mechanism. According to the invention, a plurality of adjusting rotating sheets are arranged, the vertical positions of the adjusting rotating sheets are movable, the inclination angles of the adjusting rotating sheets can be independently adjusted, and the distribution shape, weight distribution and separation speed of separated objects in each area are monitored in real time based on a separated object distribution state monitoring module, so that the vertical positions and the inclination angles of the adjusting rotating sheets are adaptively regulated and adjusted; and the removed objects are uniformly distributed in each area.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural equipment, and in particular to a longitudinal axial flow combine harvester offal distribution state adjustment device, an adaptive control method and a combine harvester. Background Art

[0002] The cleaning device of the combine harvester is the core working part that determines the working parameters and operating efficiency of the combine harvester. When the combine harvester is operating, the material is transported to the longitudinal axial flow threshing drum device for threshing and separation. The threshed and separated material passes through the concave screen holes and falls onto the vibrating screen. Finally, the rice stalks are discharged from the tail of the longitudinal axial flow drum. The material is cleaned by the vibration of the vibrating screen and the cleaning fan. The cleaned grains are transported to the grain box, and the rest are blown out of the cleaning chamber. However, due to the influence of the side walls of the chassis and the turning of the drum, the material under the threshing device is unevenly distributed, and the overall distribution in the lateral direction of the vibrating screen is more on both sides and less in the middle. Due to the excessive accumulation of material on both sides, the effect of the cleaning fan in separating impurities from grains is greatly reduced.

[0003] At present, Chinese patent CN201611002803 discloses "a concave screen for rice and wheat threshing device", which can adjust the size of the sieve holes according to the harvesting situation, thereby changing the distribution of the detached material on the vibrating screen. However, if the sieve holes are too small, the threshing and separation efficiency will be affected, and if the sieve holes are too large, the detached material will be greatly increased. Chinese patent CN201710449702.1 discloses "a return conveying uniform distribution system matched with a longitudinal axial flow threshing and separation device", in which a return conveyor belt is installed between the longitudinal axial flow drum and the vibrating cleaning screen, and a number of diverter strips are installed on the machine wall below the longitudinal axial flow drum. The thickness of the detached material layer on the return conveyor belt is controlled by changing the angle of the diverter strip, so that the detached material falling on the vibrating cleaning screen is flatter, which plays a role in improving the cleaning performance. However, the device increases the time for the detached material to be separated to the cleaning screen, and the detached material is concentrated in front of the cleaning screen, which makes the utilization rate of the cleaning device low, resulting in a significant reduction in the cleaning efficiency. Summary of the invention

[0004] In view of the problems of excessive accumulation of off-gassing materials on both sides of the existing cleaning and threshing devices and / or low cleaning and threshing efficiency, the present invention provides an off-gassing material distribution state adjustment device for a longitudinal axial flow combine harvester, an adaptive control method and a combine harvester. The off-gassing material distribution state adjustment device is provided with a plurality of adjustment rotors, and the upper and lower positions of the adjustment rotors are movable and the inclination angles are individually adjustable. Based on an off-gassing material distribution state monitoring module, the off-gassing material distribution shape, off-gassing material weight distribution and off-gassing material separation speed in each area are monitored in real time, and the upper and lower positions and inclination angles of the adjustment rotors are adaptively controlled to make the off-gassing materials evenly distributed in each area.

[0005] The technical solution adopted by the present invention is:

[0006] A device for adjusting the distribution state of an off-put of a longitudinal axial flow combine harvester comprises a longitudinal axial flow threshing device, an off-put distribution state adjusting mechanism, an off-put distribution state monitoring module, a cleaning screen installed below the longitudinal axial flow threshing device, and an off-put distribution state adaptive control module;

[0007] The mechanism for adjusting the distribution state of the shed material is located between the longitudinal axial flow threshing device and the cleaning screen, and includes a rotary drive mechanism, an adjustment rotary piece, a rotary shaft bracket, a slide rail, and an upper and lower drive mechanism; four slide rails are vertically arranged, two rotary shaft brackets are arranged in parallel, and both ends are slidably mounted on the two slide rails, and are driven to slide on the slide rails by the upper and lower drive mechanisms respectively; a plurality of the adjustment rotary pieces are arranged in parallel, and both ends are rotatably mounted on the two rotary shaft brackets, and each adjustment rotary piece is independently driven to rotate by a rotary drive mechanism;

[0008] The module for monitoring the distribution status of the discharged matter includes a visual monitoring sensor, a stress monitoring sensor, and a speed monitoring sensor. The visual monitoring sensor is installed on the side plate of the frame and is used to monitor the distribution shape of the discharged matter on the cleaning screen. There are multiple stress monitoring sensors that are evenly distributed on the upper surface of the cleaning screen and are used to monitor the weight distribution of the discharged matter on the cleaning screen. The speed monitoring sensor is installed on the side plate of the frame and is used to monitor the separation speed of the discharged matter.

[0009] The expellant distribution state adaptive control module is connected to the expellant distribution state monitoring module, the rotary drive mechanism, and the upper and lower drive mechanisms, and is used to store the expellant distribution state model library, obtain the collected expellant distribution shape, weight distribution, and expellant separation speed data, obtain the distribution model of the expellants on the screening screen according to the expellant distribution state model library, and calculate the uniformity of the expellant distribution, and issue control instructions to the rotary drive mechanism and the upper and lower drive mechanism based on the uniformity of the expellant distribution.

[0010] Furthermore, the rotating shafts at both ends of the adjustment rotating piece are installed on the rotating shaft bracket through bearings, and the rotation driving mechanism includes a first motor and a transmission structure, and the transmission structure is one of a belt drive, a chain drive or a gear drive.

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

[0012] Furthermore, the pulley drive mechanism includes a driving wheel, a driven wheel, a belt, and a second motor. A group of driving wheels and driven wheels are rotatably installed on a slide rail and meshed with a belt; the driving wheel is driven to rotate by the second motor, and both ends of each rotating shaft bracket are fixed on two belts.

[0013] Furthermore, the driving wheel and the driven wheel are respectively installed on the slide rail through the top connecting piece of the slide rail and the bottom connecting piece of the slide rail, the top connecting piece of the slide rail and the bottom connecting piece of the slide rail are fixed on the slide rail, and a circular shaft is rotatably arranged between the top connecting piece of the slide rail, the bottom connecting piece of the slide rail and the slide rail, and the two circular shafts are respectively fixed to the center of the driving wheel and the driven wheel, and the circular shaft on the driving wheel is fixed to the output end of the second motor;

[0014] The two ends of the rotating shaft bracket are fixedly connected to the slider through the slider connector, and the slider is fixed on the belt.

[0015] Further, the longitudinal axial flow threshing device comprises a longitudinal axial flow threshing drum, a top cover, a concave plate screen and a frame side plate respectively installed above, below and on the side of the longitudinal axial flow threshing drum;

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

[0017] Furthermore, the length of the adjusting rotor is the same as the length of the cleaning screen, and the rotating shaft bracket is perpendicular to the direction of the cleaning screen;

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

[0019] An adaptive control method for a longitudinal axial flow combine harvester offal distribution state adjustment device comprises the following steps:

[0020] S1. First, data is collected through bench tests, and a model library of the distribution state of the ejected objects is established according to the distribution shape, weight distribution and separation speed of the ejected objects 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 of the detached material, the weight distribution of the detached material, and the separation speed of the detached material in real time and feed back to the detached material distribution state adaptive control module. The detached material distribution state adaptive control module compares the feedback data with the detached material distribution state model library to obtain the distribution model of the detached material on the cleaning screen;

[0022] S3. The adaptive control module for the distribution state of the exudates divides the obtained distribution model into several regions separated by the adjustment plate, obtains the distribution state of the exudates in each region, and uses a statistical method to calculate the uniformity between the distribution states of each region;

[0023] S4. The adaptive control module for the distribution state of the ejected objects sends a control instruction to the rotary drive mechanism according to the uniformity between the distribution states of each region, adjusts the angle of the rotating plate to change the moving direction, quantity and speed of the separated and falling objects in each region, and improves the uniformity between the distribution states of each region;

[0024] S5. Repeat steps S2-S4, and finally make the discharged material evenly distributed in each area separated by the adjusting rotor on the cleaning screen.

[0025] Furthermore, in step S4, the adaptive control module for the distribution state of the exudates may send a control instruction to the upper and lower driving mechanisms to adjust the horizontal height of the adjusting rotor according to the uniformity of the distribution states of each region, if only adjusting the angle of the adjusting rotor cannot achieve the effect of uniform distribution of the exudates, so as to improve the uniformity of the distribution states of each region.

[0026] A combine harvester comprises the longitudinal axial flow combine harvester offal distribution state adjustment device.

[0027] The beneficial effects of the present invention are:

[0028] In the present invention, an exudate distribution state adjustment mechanism is arranged between the longitudinal axial flow threshing device and the cleaning screen, and the multiple adjustment rotors on the exudate distribution state adjustment mechanism are movable in upper and lower positions, and the inclination angles can be adjusted separately, so that the exudate distribution states in each area separated by the adjustment rotors can be regulated separately. The exudate distribution state adaptive control module monitors the exudate distribution shape, exudate weight distribution and exudate separation speed of each area in real time based on the exudate distribution state monitoring module, calculates the exudate distribution uniformity, and issues control instructions to the rotating drive mechanism and the upper and lower drive mechanism based on the exudate distribution uniformity of each area, and adaptively controls the inclination angle and the overall height of each adjustment rotor, so that the exudate is evenly distributed in each area, so that the adjustment efficiency and automation degree of the exudate distribution state are greatly improved. In addition, dynamic adjustment is performed through the exudate distribution state adaptive control module to ensure that the threshing drum can achieve a good exudate distribution state adjustment effect when it is tilted or the rotation speed is different.

[0029] In the present invention, the various parts of the threshing and cleaning device are modularly divided, which is easy to install and has low cost. The core component is the threshing and cleaning device distribution state adjustment mechanism, which only needs to be installed on the existing threshing and cleaning device to improve the cleaning efficiency, and improve and upgrade the existing combine harvester. There is no need to purchase new equipment to improve the cleaning efficiency, which greatly saves economic costs. The various components of the present invention can be designed, produced, transported, repaired and replaced independently of each other, and the assembly and disassembly methods are simple and easy to operate, and the assembly and disassembly time are both short, which greatly saves the production cost and use cost of each component. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic diagram of the structure of the longitudinal axial flow combine harvester discharge distribution state adjustment device of the present invention.

[0031] Figure 2The present invention is a front view of the structure of the device for adjusting the distribution state of the harvested material of the longitudinal axial flow combine harvester.

[0032] Figure 3 It is the left view of the longitudinal axial flow threshing device of the present invention.

[0033] Figure 4 It is the front view of the longitudinal axial flow threshing device of the present invention.

[0034] Figure 5 It is a three-dimensional schematic diagram of the mechanism for adjusting the distribution state of the ejected matter of the present invention.

[0035] Figure 6 It is a top view of the mechanism for adjusting the distribution state of the ejected matter of the present invention.

[0036] Figure 7 The figure is a flowchart of the operation of the adaptive control module for the distribution state of the exudate of the present invention.

[0037] In the figure, 1. longitudinal axial flow threshing device, 101. top cover, 102. longitudinal axial flow threshing drum, 103. concave plate screen, 104. frame side plate, 2. discharging distribution state adjustment mechanism, 201. first motor, 202. adjustment rotor, 203. rotating shaft, 204. rotating shaft bracket, 205. bearing, 206. first gear, 207. second gear, 208. gear box, 209. slider connector, 210. slider, 211. slide rail, 212. slide rail top connector, 213. slide rail bottom connector, 214. driving wheel, 215. belt, 216. second motor, 3. discharging distribution state monitoring module, 301. visual monitoring sensor, 302. stress monitoring sensor, 303. speed monitoring sensor, 4. cleaning screen, 5. discharging distribution state adaptive control module. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the specific implementation modes of the accompanying drawings, but the protection scope of the present invention is not limited thereto.

[0039] Embodiment 1

[0040] Figure 1-Figure 2 It is an embodiment of the device for adjusting the distribution state of the offal of the longitudinal axial flow combine harvester of the present invention, comprising a longitudinal axial flow threshing device 1, an offal distribution state adjusting mechanism 2, an offal distribution state monitoring module 3, a cleaning screen 4 installed below the longitudinal axial flow threshing device 1, and an offal distribution state adaptive control module 5.

[0041] The longitudinal axial flow threshing device comprises a longitudinal axial flow threshing drum 102, a top cover 101, a concave plate screen 103 and a frame side plate 104 respectively installed above, below and on the side of the longitudinal axial flow threshing drum 102, and a Figure 3 and Figure 4 The concave screen 103 surrounds the lower part of the longitudinal axial flow threshing drum 102 but there is no contact between the two. The material falls downward after being threshed by the longitudinal axial flow threshing drum 102 and the concave screen 103. The top cover 101 is used to prevent the rotating longitudinal axial flow threshing drum 102 from throwing the material out from above. The frame side plate 104 is used to fix the threshing material distribution state adjustment mechanism 2 and the cleaning screen 4.

[0042] The material distribution state adjustment mechanism 2 is located between the longitudinal axial flow threshing device 1 and the cleaning screen 4, and the upper surface of the material distribution state adjustment mechanism 2 is located below the center of the longitudinal axial flow threshing drum 102, and the material distribution state adjustment mechanism 2 is located above the top surface of the cleaning screen 4. Figure 5-Figure 6 As shown, the mechanism 2 for adjusting the distribution state of the ejected material includes a rotary drive mechanism, an adjustment rotor 202, a rotating shaft bracket 204, a slide rail 211, and an upper and lower driving mechanism. Four slide rails 211 are arranged vertically, and the slide rails 211 are mounted on the frame side plate 104 through the slide rail top connector 212 and the slide rail bottom connector 213. Two rotating shaft brackets 204 are arranged in parallel, and the two ends are slidably mounted on the two slide rails 211, and are driven to slide on the slide rails 211 by the upper and lower driving mechanisms. The upper and lower driving mechanisms are one of a gear rack drive mechanism, a pulley drive mechanism or a screw structure. The pulley drive mechanism includes a driving wheel, a driven wheel, a belt 215, and a second motor 216. A group of driving wheels and driven wheels are rotatably mounted on a slide rail 211 and meshed with a belt 215; the driving wheel is driven to rotate by the second motor 216, and the two ends of each rotating shaft bracket 204 are fixed on two belts 215.

[0043] Specifically, the driving wheel and the driven wheel are respectively installed on the slide rail 211 through the top connecting piece 212 and the bottom connecting piece 213 of the slide rail, the top connecting piece 212 and the bottom connecting piece 213 of the slide rail are fixed on the slide rail 211, and circular shafts are rotatably arranged between the top connecting piece 212 and the bottom connecting piece 213 of the slide rail and the slide rail 211, and the two circular shafts are respectively fixed to the center of the driving wheel and the driven wheel, and the circular shaft on the driving wheel is fixed to the output end of the second motor 216, and the second motor 216 drives the driving wheel to rotate, and then drives the belt 215 to move, and then drives the rotating shaft bracket 204 to move up and down. The maximum moving distance of the rotating shaft bracket 204 on the slide rail 211 is set according to the requirements of different models and different working environments. In this embodiment, the maximum moving distance of the rotating shaft bracket 204 on the slide rail 211 is 600mm, that is, the plane formed by the adjustment rotating piece 202 and the rotating shaft bracket 204 can move up and down in the vertical direction along the slide rail 211, and the movable distance is 0mm-600mm. Specifically, the two ends of the rotating shaft bracket 204 are fixedly connected to the slider 210 through the slider connector 209, and the slider 210 is fixed on the belt 215. The slider 210 has a through hole inside for passing the belt 215 and fixing it, thereby realizing the installation of the rotating shaft bracket 204 on the belt 215. When the belt 215 moves, it can drive the rotating shaft bracket 204 to move synchronously along the belt 215 to adjust the height of the adjustment rotating piece 202. Both ends of the slide rail 211 are installed on the frame side plate 104 through the slide rail top connector 212 and the slide rail bottom connector 213. Specifically, the slide rail top connector 212 and the slide rail bottom connector 213 are both provided with mounting holes, and the slide rail top connector 212 and the slide rail bottom connector 213 can be fixedly installed on the frame side plate 104 by bolts, thereby realizing the installation between the detached material distribution state adjustment mechanism 2 and the longitudinal axial flow threshing device 1.

[0044] A plurality of adjusting rotating pieces 202 are arranged in parallel, and both ends are rotatably mounted on two rotating shaft brackets 204, and each adjusting rotating piece 202 is independently driven to rotate by a rotating drive mechanism. Specifically, both ends of the adjusting rotating piece 202 are mounted with a rotating shaft 203, and the left and right ends of the adjusting rotating piece 202 are respectively connected to the inner end grooves of the rotating shaft 203, and the adjusting rotating piece 202 and the rotating shaft 203 are fixed by bolts. The rotating shaft 203 is rotatably connected to the rotating shaft bracket 204 through a bearing 205, and the rotating shaft bracket 204 is evenly distributed with a plurality of through holes, and each of the through holes is mounted with a bearing 205, and the outer circumferential surface of the rotating shaft 203 is connected to the inner ring of the bearing 205, so that the rotating shaft 203 is rotatably mounted on the rotating shaft bracket 204. The rotating drive mechanism includes a first motor 201 and a transmission structure, and the transmission structure is one of a belt drive, a chain drive or a gear drive, and the first motor 201 provides power, and the adjusting rotating piece 202 is driven to rotate through the transmission structure. The gear transmission includes a first gear 206 and a second gear 207 that mesh with each other. The first gear 206 and the second gear 207 are located in a gear box 208. The first gear 206 is fixed to the output end of the first motor 201, and the second gear 207 is fixed to the end of the rotating shaft 203 away from the adjustment rotor 202. When the first motor 201 is working, it drives the first gear 206 to rotate, and through the power transmission from the first gear 206 to the second gear 207, it drives the rotating shaft 203 to rotate, thereby adjusting the angle of the adjusting rotor 202. The length of the adjusting rotor 202 is the same as the length of the cleaning screen 4, so that the adjustment of the rotor 202 in the length direction of the cleaning screen 4 can adjust the distribution state of the detached matter. The rotating shaft bracket 204 is perpendicular to the screen direction of the cleaning screen 4.

[0045] The exudate distribution status 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 frame side plate 105 and is set toward the exudates on the cleaning screen 4, and is used to monitor the distribution shape of the exudates on the cleaning screen 4; the number of stress monitoring sensors 302 is multiple and evenly distributed on the upper surface of the cleaning screen 4, and is used to monitor the weight distribution of the exudates on the cleaning screen 4; the speed monitoring sensor 303 is installed on the frame side plate 105, and is set toward the exudates in the falling process, and is used to monitor the separation speed of the exudates.

[0046] The expelled material distribution state adaptive control module 5 is connected to the expelled material distribution state monitoring module 3, the rotary drive mechanism, and the upper and lower drive mechanisms, and is used to store the expelled material distribution state model library, obtain the collected expelled material distribution shape, weight distribution, and expelled material separation speed data, obtain the distribution model of the expelled material on the screening screen 4 according to the expelled material distribution state model library, and calculate the uniformity of the expelled material distribution. Based on the uniformity of the expelled material distribution, a control instruction is issued to the rotary drive mechanism to adjust the angle of the rotary plate 202 to change the moving direction, quantity and speed of the expelled material separated and falling in each area; and a control instruction is issued to the upper and lower drive mechanisms to adjust the horizontal height of the rotary plate 202 to change the quantity and speed of the expelled material separated and falling in each area, so as to improve the uniformity between the distribution states of each area.

[0047] Combination Figure 7 As shown, the adaptive control method of the longitudinal axial flow combine harvester discharge distribution state adjustment device of the present invention comprises the following steps:

[0048] S1. First, sufficient data is collected through bench tests, and a model library of the distribution state of the ejected matter is established according to the distribution shape, weight distribution and separation speed of the ejected matter 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 distribution shape of the dislodged material, the weight distribution of the dislodged material, and the separation speed of the dislodged material in real time and feed them back to the dislodged material distribution state adaptive control module 5. The dislodged material distribution state adaptive control module 5 compares the feedback data with the dislodged material distribution state model library to obtain the distribution model of the dislodged material on the cleaning screen 4.

[0050] S3. The adaptive control module 5 for the distribution state of the exudates divides the obtained distribution model into several regions separated by the adjustment rotor 202, obtains the distribution state of the exudates in each region, and calculates the uniformity between the distribution states of each region using a statistical method.

[0051] S4. The adaptive control module 5 for the distribution state of the expelled objects sends a control instruction to the rotating drive mechanism according to the uniformity between the distribution states of each region, adjusts the angle of the adjusting rotating plate 202 to change the moving direction, quantity and speed of the separated and falling expelled objects in each region, and improves the uniformity between the distribution states of each region; only adjusting the angle of the adjusting rotating plate 202 cannot achieve the effect of uniform distribution of the expelled objects, and a control instruction can also be sent to the up and down driving mechanism to adjust the horizontal height of the adjusting rotating plate 202 to improve the uniformity between the distribution states of each region.

[0052] S5. Repeat steps S2-S4, and finally make the effluent evenly distributed in each area separated by the adjustment rotor 202 on the cleaning screen 4.

[0053] The longitudinal axial flow combine harvester offal distribution state adjustment device described in the present invention, the longitudinal axial flow threshing device is installed above the concave plate screen, the offal distribution state adjustment mechanism 2 is installed between the concave plate screen 103 and the cleaning screen 4, and the multiple adjustment rotating pieces 202 on the offal distribution state adjustment mechanism 2 are movable up and down, and the inclination angle can be adjusted separately; the offal distribution state monitoring module 3 is installed on the frame side plate 104 and the cleaning screen 4. When the combine harvester device is working, the grains pass through the concave plate screen 103 of the longitudinal axial flow threshing drum and the offal distribution state adjustment mechanism 2 to reach the cleaning screen 4. The exudate distribution state monitoring module 3 respectively monitors the exudate distribution shape, exudate weight distribution and exudate 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 exudates on the cleaning screen 4 established through the previous bench test to analyze the exudate distribution shape, exudate weight distribution and exudate separation speed and other parameters collected by the exudate distribution state monitoring module 3, analyzes the distribution of exudates on the cleaning screen under the most ideal state, and adjusts the angle of the rotating plate 202 through the first motor 201, so that the exudates are evenly distributed in various areas. If the effect of uniform distribution of exudates cannot be achieved by adjusting the angle of the rotating plate 202 alone, the height of the plane where the rotating plate 202 is located is adjusted through the second motor 216 until the exudates are distributed more evenly on the cleaning screen 4, that is, the distribution of the exudates on the cleaning screen 4 remains in a relatively flat state, which is conducive to the fan separating the grains from the debris. In addition, the first motor 201 and the second motor 216 can also be controlled simultaneously to adjust the angle of the rotor 202 and the height of the plane where the rotor 202 is located, so that the distribution of the exudates on the cleaning screen 4 remains relatively flat, that is, the exudates are evenly distributed in various areas. After that, the cleaning screen 4 vibrates and the fan works at the same time, leaving the grains and blowing the rest out of the threshing device, thereby improving the cleaning efficiency. In addition, dynamic adjustment is performed through the adaptive control module 5 of the distribution state of the exudates to ensure that the threshing drum can achieve a good adjustment effect of the distribution state of the exudates when it is tilted or the speed is different.

[0054] Embodiment 2

[0055] The combine harvester of the present invention comprises the longitudinal axial flow combine harvester discharge distribution state adjustment device described in the first embodiment.

[0056] The examples are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. A device for adjusting the distribution state of the discharged material of a longitudinal axial flow combine harvester, characterized in that: It comprises a longitudinal axial flow threshing device (1), an effluent distribution state adjustment mechanism (2), an effluent distribution state monitoring module (3), a cleaning screen (4) installed below the longitudinal axial flow threshing device (1), and an effluent distribution state adaptive control module (5); The threshing material distribution state adjustment mechanism (2) is located between the longitudinal axial flow threshing device (1) and the cleaning screen (4), and comprises a rotary drive mechanism, an adjustment rotating piece (202), a rotating shaft bracket (204), a slide rail (211), and an upper and lower driving mechanism; four slide rails (211) are vertically arranged, two rotating shaft brackets (204) are arranged in parallel, and two ends are slidably mounted on the two slide rails (211), and are driven to slide on the slide rails (211) by the upper and lower driving mechanisms; a plurality of the adjustment rotating pieces (202) are arranged in parallel, and two ends are rotatably mounted on the two rotating shaft brackets (204), and each adjustment rotating piece (202) is independently driven to rotate by a rotary drive mechanism; The exudate 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 mounted on a frame side plate (105) and is used to monitor the distribution shape of exudates on the cleaning screen (4). The number of stress monitoring sensors (302) is multiple and evenly distributed on the upper surface of the cleaning screen (4) and is used to monitor the weight distribution of exudates on the cleaning screen (4). The speed monitoring sensor (303) is mounted on a frame side plate (105) and is used to monitor the separation speed of exudates. The expelled material distribution state adaptive control module (5) is connected to the expelled material distribution state monitoring module (3), the rotary drive mechanism, and the up-down drive mechanism, and is used to store an expelled material distribution state model library, obtain the collected expelled material distribution shape, weight distribution, and expelled material separation speed data, obtain the distribution model of the expelled material on the cleaning screen (4) according to the expelled material distribution state model library, calculate the expelled material distribution uniformity, and issue control instructions to the rotary drive mechanism and the up-down drive mechanism based on the expelled material distribution uniformity.

2. The device for adjusting the distribution state of the longitudinal axial flow combine harvester according to claim 1, characterized in that: The rotating shafts (203) at both ends of the adjusting rotating plate (202) are mounted on the rotating shaft bracket (204) via bearings (205); the rotating drive mechanism comprises a first motor (201) and a transmission structure; the transmission structure is one of a belt drive, a chain drive or a gear drive.

3. The device for adjusting the distribution state of the longitudinal axial flow combine harvester according to claim 1, characterized in that: The up and down driving mechanism is a gear rack driving mechanism, a pulley driving mechanism or a screw structure.

4. The device for adjusting the distribution state of the axial flow combine harvester according to claim 3, characterized in that: The pulley driving mechanism comprises a driving wheel, a driven wheel, a belt (215), and a second motor (216); a group of driving wheels and a driven wheel are rotatably mounted on a slide rail (211) and meshedly connected with a belt (215); the driving wheel is driven to rotate by the second motor (216), and both ends of each rotating shaft bracket (204) are fixed on two belts (215).

5. The device for adjusting the distribution state of the axial flow combine harvester according to claim 4, characterized in that: The driving wheel and the driven wheel are respectively installed on the slide rail (211) through the slide rail top connecting piece (212) and the slide rail bottom connecting piece (213); the slide rail top connecting piece (212) and the slide rail bottom connecting piece (213) are fixed on the slide rail (211); and circular shafts are rotatably 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 respectively fixed to the center of the driving wheel and the driven wheel; and the circular shaft on the driving wheel is fixed to the output end of the second motor (216); The two ends of the rotating shaft support (204) are fixedly connected to the slider (210) through the slider connector (209), and the slider (210) is fixed on the belt (215).

6. The device for adjusting the distribution state of the longitudinal axial flow combine harvester according to claim 1, characterized in that: The longitudinal axial flow threshing device comprises a longitudinal axial flow threshing drum (102), a top cover (101) respectively installed above, below and on the side of the longitudinal axial flow threshing drum (102), a concave plate screen (103) and a frame side plate (104); The slide rail (211) is installed on the rack side plate (104) via a slide rail top connector (212) and a slide rail bottom connector (213).

7. The device for adjusting the distribution state of the longitudinal axial flow combine harvester according to claim 1, characterized in that: The length of the adjusting rotating piece (202) is the same as the length of the cleaning screen (4), and the rotating shaft support (204) is perpendicular to the screen piece of the cleaning screen (4); The maximum moving distance of the rotating shaft support (204) on the slide rail (211) is set according to different machine models and different operating environment requirements.

8. The adaptive control method of the device for adjusting the distribution state of the scavenged material of a longitudinal axial flow combine harvester according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. First, data is collected through bench tests, and a model library of the distribution state of the ejected objects is established according to the distribution shape, weight distribution and separation speed of the ejected objects in the test; 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 distribution shape of the detached material, the weight distribution of the detached material, and the separation speed of the detached material in real time and feed them back to the detached material distribution state adaptive control module (5). The detached material distribution state adaptive control module (5) compares the feedback data with the detached material distribution state model library to obtain the distribution model of the detached material on the cleaning screen (4); S3. The adaptive control module (5) of the distribution state of the exudate splits the obtained distribution model into several regions separated by the adjustment plate (202), obtains the distribution state of the exudate in each region, and uses statistical methods to calculate the uniformity between the distribution states of each region; S4. The adaptive control module (5) of the distribution state of the ejected objects sends a control instruction to the rotation drive mechanism according to the uniformity between the distribution states of each region, adjusts the angle of the rotating plate (202) to change the moving direction, quantity and speed of the separated and falling ejected objects in each region, and improves the uniformity between the distribution states of each region; S5. Repeat steps S2-S4, and finally make the effluent evenly distributed in each area separated by the adjustment rotating plate (202) on the cleaning screen (4).

9. The adaptive control method according to claim 8, characterized in that: In step S4, the adaptive control module (5) for the distribution state of the exudates may send a control instruction to the upper and lower driving mechanism to adjust the horizontal height of the adjustment rotating plate (202) according to the uniformity between the distribution states of each region, if the uniform distribution of the exudates cannot be achieved by adjusting the angle of the adjustment rotating plate (202), so as to improve the uniformity between the distribution states of each region.

10. A combine harvester, characterized in that: The invention comprises the device for adjusting the distribution state of the offal of a longitudinal axial flow combine harvester according to any one of claims 1 to 7.

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