Sowing test bed device capable of adjusting postures of seeding monomers and soil environment on line

Abstract

The invention relates to the technical field of sowing test equipment, and provides a sowing test bed device capable of adjusting the posture of a sowing single body and the soil environment on line, which comprises a conveying line, and a soil supply device, a soil thickness adjusting device and a sowing rack which are sequentially arranged along the conveying direction of the conveying line. Wherein the conveying line is used for conveying soil, the soil supply device is used for supplying the soil to the conveying line, the soil thickness adjusting device is used for adjusting the thickness of the soil on the conveying line, and the sowing rack is used for installing a sowing machine for testing and can adjust the height and angle of the sowing machine. According to the sowing test bed device capable of adjusting the sowing single body posture and the soil environment on line, the soil thickness adjusting device can adjust the thickness of passing soil, and the sowing rack can adjust the height and angle of a sowing machine according to test requirements in the sowing process so as to simulate various sowing postures of the sowing machine in actual field operation; and the test result can truly and comprehensively reflect the seeding performance of the seeding machine.

Description

Technical Field

[0001] The present invention relates to the technical field of sowing test equipment, and in particular to a sowing test bench device capable of online adjusting the posture of a sowing unit and the soil environment. Background Art

[0002] Before a seed drill is put into use, its seeding performance usually needs to be tested. In existing seeding test environments, the soil environment and the installation location of the seed drill are mostly fixed, which cannot simulate the actual working environment of the seed drill. As a result, the test results are difficult to accurately reflect the seed drill's performance. Summary of the Invention

[0003] The present invention provides a sowing test bench device capable of online adjusting the posture of a sowing unit and the soil environment, so as to solve the problem in the prior art that the sowing test environment cannot simulate the real and complex working environment of a seeder, and the test results are difficult to truly and accurately reflect the performance of the seeder.

[0004] The present invention provides a sowing test bench device capable of online adjusting the posture of a sowing unit and the soil environment, comprising: conveyor line for conveying soil; A soil supply device, a soil thickness adjustment device, and a sowing stand are sequentially arranged along the conveying direction of the conveying line; The soil supply device is used to supply soil to the conveying line; The soil thickness adjustment device is used to adjust the soil thickness on the conveyor line; The sowing stand is used for installing a test sowing machine and can adjust the height and angle of the sowing machine.

[0005] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the soil supply device includes: The hopper is used to accommodate soil, and the bottom of the hopper is provided with a discharge port facing the conveying line.

[0006] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the soil supply device further includes: The first screw conveying mechanism includes a first driving member, a first rotating shaft, and a first spiral blade, wherein the first rotating shaft is disposed in the hopper and extends along the conveying direction of the conveying line, and a first end of the first rotating shaft extends outside the hopper through the discharge port; the first spiral blade spirally surrounds the outer wall of the first rotating shaft along the axial direction of the first rotating shaft, and the first driving member is in transmission connection with the first rotating shaft to drive the first rotating shaft to rotate; The second screw conveying mechanism includes a second driving member, a second rotating shaft, and a second spiral plate. The second rotating shaft and the first rotating shaft are arranged side by side. The first end of the second rotating shaft extends to the outside of the hopper through the discharge port. The second spiral plate spirally surrounds the outer wall of the second rotating shaft along the axial direction of the second rotating shaft. The second driving member is in transmission connection with the second rotating shaft to drive the second rotating shaft to rotate. The first spiral sheet and the second spiral sheet have opposite rotation directions, and the first rotation axis and the second rotation axis have opposite rotation directions.

[0007] According to the sowing test bench device of the present invention that can adjust the sowing unit posture and soil environment online, the pitch of the first spiral plate gradually decreases from the second end to the first end of the first rotating shaft; the pitch of the second spiral plate gradually decreases from the second end to the first end of the second rotating shaft.

[0008] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the soil thickness adjustment device includes: A fixed bracket, fixedly arranged above the conveying line; A lifting mechanism is provided on the fixed bracket; The scraper blade is arranged on the lifting mechanism; the lifting mechanism is used to adjust the relative height of the scraper blade and the conveying line, and the scraper blade is used to contact the soil to flatten the soil.

[0009] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the soil thickness adjustment device further includes: The pressing member is arranged on the fixing bracket, a part of the structure of the fixing bracket abuts against one side of the scraper plate, and the pressing member abuts against the other side of the scraper plate.

[0010] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the sowing bench frame comprises: Mounting seat; A mounting bracket is arranged above the mounting seat, and the seeder is arranged on the mounting bracket; At least four telescopic mechanisms are arranged in a matrix on the mounting base; the bottom end of each telescopic mechanism is fixedly connected to the mounting base, the top end of each telescopic mechanism is rotatably connected to the mounting bracket, and each telescopic mechanism can be telescoped in the vertical direction.

[0011] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the conveying line includes: a line body, for conveying the soil; The sealing structure is covered on the wire body.

[0012] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the line body includes: The conveyor belt includes a first belt body and two second belt bodies arranged side by side; the first belt body is extended in a horizontal direction, one of the second belt bodies is connected to one side of the first belt body, and the other second belt body is connected to the other side of the first belt body, and both second belt bodies are inclined upward relative to the first belt body.

[0013] According to the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment of the present invention, the sealing structure includes: A side baffle is provided corresponding to the second belt body; the side baffle extends in the vertical direction and is provided on the upper side of the second belt body, and a sealing friction block is provided between the side baffle and the corresponding second belt body to close the gap between the side baffle and the corresponding second belt body; The cover plates are respectively connected to the top ends of the side baffles.

[0014] The sowing test bench device of the present invention can adjust the posture of the sowing unit and the soil environment online, supplies soil to the conveyor line through the soil supply device, and continuously conveys the soil through the soil thickness adjustment device and the sowing bench in sequence through the conveyor line. The soil thickness adjustment device can adjust the thickness of the passing soil according to the soil undulation in the field. The sowing bench is used to install a test seeder, and the seeder sows when the soil passes through. During the sowing process, the sowing bench can adjust the height and angle of the seeder according to the test requirements to simulate various sowing postures of the seeder during actual operation in the field, so that the sowing environment on the test bench can better simulate the actual working scene of the seeder, and then the test results can truly and comprehensively reflect the sowing performance of the seeder, effectively solving the problem that the sowing test environment in the prior art cannot simulate the real and complex working environment of the seeder, and the test results are difficult to truly and accurately reflect the performance of the seeder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of a sowing test bench device capable of online adjusting the posture of a sowing unit and the soil environment, provided by an embodiment of the present invention.

[0017] Figure 2 It is a front view of a sowing test bench device capable of online adjusting the posture of a sowing unit and the soil environment provided by an embodiment of the present invention.

[0018] Figure 3 It is a top view of a sowing test bench device capable of online adjusting the posture of a sowing unit and the soil environment provided by an embodiment of the present invention.

[0019] Figure 4 is a front view of a soil supply device provided by an embodiment of the present invention; Figure 5 is a top view of a soil supply device provided by an embodiment of the present invention; Figure 6 is a schematic diagram of a soil thickness adjustment device provided by an embodiment of the present invention; Figure 7 is a schematic diagram of a sowing stand provided in an embodiment of the present invention; Figure 8 is a partial schematic diagram of a conveyor line provided by an embodiment of the present invention; Figure 9 is a partial schematic diagram of a sealing structure provided by an embodiment of the present invention; Reference numerals: 1. Conveyor line; 11. Line body; 111. Conveyor belt; 112. First belt body; 113. Second belt body; 12. Sealing structure; 121. Side baffle; 122. Cover plate; 123. Sealing friction block; 2. Soil supply device; 21. Hopper; 22. First spiral conveying mechanism; 221. First driving member; 222. First rotating shaft; 223. First spiral plate; 23. Second spiral conveying mechanism; 231. Second driving member; 232. Second rotating shaft; 233. Second spiral plate; 3. Soil thickness adjustment device; 31. Fixed bracket; 32. Lifting mechanism; 33. Scraper plate; 34. Pressing member; 4. Seeding stand; 41. Mounting seat; 42. Mounting bracket; 43. Telescopic mechanism; 5. Seeder; 6. Light source; 7. High-speed camera. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] The following combination Figures 1-9 The invention describes a sowing test bench device capable of online adjusting the posture of a sowing unit and the soil environment.

[0022] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, the present invention provides a sowing test bench device capable of online adjustment of the posture of a sowing unit and the soil environment, comprising: a conveyor line 1, and a soil supply device 2, a soil thickness adjustment device 3, and a sowing stand 4 arranged in sequence along the conveying direction of the conveyor line 1. The conveyor line 1 is used to transport soil, the soil supply device 2 is used to supply soil to the conveyor line 1, the soil thickness adjustment device 3 is used to adjust the soil thickness on the conveyor line 1, and the sowing stand 4 is used to mount a test sowing machine 5, and can adjust the height and angle of the sowing machine 5.

[0023] In this embodiment, the soil supply device 2 is disposed at the starting end of the conveyor line 1. The soil supply device 2 is used to supply soil to the conveyor line 1, which in turn transports the soil, sequentially transporting the soil through the soil thickness adjustment device 3 and the sowing stand 4. The soil thickness adjustment device 3 is capable of adjusting the soil thickness of the section as the soil passes through it, so that the soil after passing through the soil thickness adjustment device 3 can simulate the undulating soil environment in the actual working scene of the seed drill 5.

[0024] The conveyor line 1 then transports the soil to the sowing platform 4, which is used to mount a test seeder 5. The height and sowing angle of the seeder 5 can be adjusted based on the actual operating conditions of the seeder 5, making the sowing posture of the seeder 5 more similar to that of field operations, and allowing for posture adjustments under different operating conditions. The seeder 5 can sow seeds in the soil it passes through, and the performance of the seeder 5 can be evaluated by observing the sowing conditions in the soil after passing through the sowing platform 4.

[0025] The sowing test bench device of the present invention can adjust the posture of the sowing unit and the soil environment online, supplies soil to the conveyor line 1 through the soil supply device 2, and continuously conveys the soil through the soil thickness adjustment device 3 and the sowing stand 4 in sequence through the conveyor line 1. The soil thickness adjustment device 3 can adjust the thickness of the passing soil according to the soil undulation in the field. The sowing stand 4 is used to install the test seeder 5. The seeder 5 sows when the soil passes through. During the sowing process, the sowing stand 4 can adjust the height and angle of the seeder 5 according to the test requirements to simulate various sowing postures of the seeder 5 during actual operation in the field, so that the sowing environment on the test bench can better simulate the actual working scene of the seeder 5, and then the test results can truly and comprehensively reflect the sowing performance of the seeder 5, effectively solving the problem that the sowing test environment in the prior art cannot simulate the real and complex working environment of the seeder, and the test results are difficult to truly and accurately reflect the performance of the seeder.

[0026] Specifically, in some embodiments, Figure 4 and Figure 5 As shown, soil supply device 2 includes a hopper 21 for holding soil. Hopper 21 has a discharge port facing conveyor line 1. In this embodiment, hopper 21 is used to hold a certain amount of test soil. During the test, the soil is discharged from the discharge port of hopper 21 onto conveyor line 1, moving along conveyor line 1 to facilitate subsequent testing.

[0027] Specifically, in some embodiments, Figure 4 and Figure 5 As shown, the soil feeding device 2 further includes: a first spiral conveying mechanism 22 and a second spiral conveying mechanism 23. The first spiral conveying mechanism 22 includes a first driving member 221, a first rotating shaft 222, and a first spiral blade 223. The first rotating shaft 222 is disposed within the hopper 21 and extends along the conveying direction of the conveyor line. The first end of the first rotating shaft 222 extends outside the hopper 21 through the discharge port. The first spiral blade 223 spirally surrounds the outer wall of the first rotating shaft 222 along the axial direction of the first rotating shaft 222. The first driving member 221 and the first rotating shaft 222 are in transmission connection to drive the first rotating shaft 222 to rotate. The second spiral conveying mechanism 23 includes a second driving member 231, a second rotating shaft 232, and a second spiral plate 233. The second rotating shaft 232 and the first rotating shaft 222 are arranged side by side, and the first end of the second rotating shaft 232 extends out of the hopper 21 through the discharge port. The second spiral plate 233 spirally surrounds the outer wall of the second rotating shaft 232 along the axial direction of the second rotating shaft 232. The second driving member 231 and the second rotating shaft 232 are in transmission connection to drive the second rotating shaft 232 to rotate. The first spiral plate 223 and the second spiral plate 233 rotate in opposite directions, and the first rotating shaft 222 and the second rotating shaft 232 rotate in opposite directions.

[0028] In this embodiment, it is understood that a feed port is formed on the side of the hopper 21, and the first and second screw conveying mechanisms 22, 23 are arranged side by side in the hopper 21. The ends of the first and second screw conveying mechanisms 22, 23 both extend through the feed port to the outside of the hopper 21. The first rotating shaft 222 of the first screw conveying mechanism 22 is capable of rotating under the drive of the first driving member 221, and the first spiral piece 223 spirally wound on the first rotating shaft 222 is capable of driving the soil in the hopper 21 toward the feed port until it falls from the outside of the feed port onto the conveyor line 1. The structure and function of the second screw conveying mechanism 23 are similar to those of the first screw conveying mechanism 22 and will not be described in detail here.

[0029] At the same time, by arranging the first rotating shaft 222 and the second rotating shaft 232 side by side along the width direction of the conveyor line, the rotation directions of the first rotating shaft 222 and the second rotating shaft 232 are opposite, and the rotation directions of the first spiral piece 223 and the second spiral piece 233 are also opposite. This rotation layout method can make the soil more evenly cover the conveyor line 1 along the width direction of the conveyor line 1 in the process of being brought out of the hopper 21 by the first spiral conveying mechanism 22 and the second spiral conveying mechanism 23 and falling to the conveyor line 1.

[0030] It can be understood that the first driving member 221 and the second driving member 231 can be independent rotating motors. By adjusting the rotational speed of the two rotating motors, the transmission of the corresponding spiral conveying mechanism can be adjusted, and then the soil discharge speed of the feeding port can be adjusted, so as to cooperate with the soil thickness adjustment device 3 to more accurately control the maximum thickness of the soil accumulation on the conveyor line 1.

[0031] Optionally, the hopper 21 may be designed as a funnel-shaped structure that is wide at the top and narrow at the bottom.

[0032] Specifically, in some embodiments, Figure 5 As shown, the pitch of the first helical plate 223 gradually decreases from the second end to the first end of the first rotating shaft 222. The pitch of the second helical plate 233 gradually decreases from the second end to the first end of the second rotating shaft 232.

[0033] In this embodiment, it is understood that the second end of the first rotating shaft 222 is the end extending outside the hopper 21, and the first end is the end extending into the hopper 21. The first spiral blade 223 of this embodiment has a smaller pitch near the first end and a larger pitch near the second end, which can more effectively drive the soil in the hopper 21 away from the discharge port toward the discharge port, and make the soil at various positions in the hopper 21 move toward the discharge port and be discharged evenly, thereby uniformly lowering the soil surface in the hopper 21 and avoiding local accumulation of soil in the hopper 21 or uneven emptying. It is understood that the pitch setting method and function of the second spiral blade 233 are similar to those of the first spiral blade 223 and will not be repeated here.

[0034] In some embodiments, as Figure 6 As shown, the soil thickness adjustment device 3 includes a fixed bracket 31, a lifting mechanism 32, and a scraper blade 33. The fixed bracket 31 is fixedly mounted above the conveyor line 1. The lifting mechanism 32 is mounted on the fixed bracket 31. The scraper blade 33 is mounted on the lifting mechanism 32. The lifting mechanism 32 is used to adjust the relative height of the scraper blade 33 and the conveyor line 1. The scraper blade 33 is used to contact the soil to level it.

[0035] In this embodiment, the fixed bracket 31 is used to fix and support other structures of the soil thickness adjustment device 3. It is understandable that the fixed bracket 31 can be installed on the ground, on a column or on other fixed structures of the test bench. A lifting mechanism 32 is provided on the fixed bracket 31. The lifting mechanism 32 is used to adjust the relative height of the scraper 33 and the conveyor line 1 according to the test requirements. The scraper 33 scrapes the soil on the conveyor line 1 as it passes through, and adjusts the soil thickness to the target thickness. It is understandable that during the continuous movement of the conveyor line 1, the lifting mechanism 32 can also dynamically adjust the thickness of the soil passing through according to the test requirements, so that the soil continuously rises and falls along the conveyor line 1 to simulate the soil environment when the planter 5 is actually working.

[0036] In some embodiments, as Figure 6 As shown, the soil thickness adjustment device 3 further includes a pressing member 34 . The pressing member 34 is disposed on the fixing bracket 31 . Part of the fixing bracket 31 abuts against one side of the scraper plate 33 , and the pressing member 34 abuts against the other side of the scraper plate 33 .

[0037] In this embodiment, by installing a pressing member 34 on the fixed bracket 31, the fixed bracket 31 and the pressing member 34 respectively abut against the two sides of the scraper board 33, so as to guide and limit the scraper board 33, so that the scraper board 33 will only be lifted and lowered in the vertical direction under the drive of the lifting mechanism 32, avoiding the scraper board 33 from bending or deflecting to the sides, which is conducive to more precise adjustment of the soil thickness on the conveyor line 1.

[0038] In a specific embodiment, Figure 6As shown, the fixed bracket 31 includes a side plate extending in the vertical direction and a fixed plate extending in the horizontal direction, and the fixed plate is connected to the top end of the side plate. The lifting mechanism 32 includes two linear electric actuators, and the two linear electric actuators are arranged on the fixed plate at intervals along the width direction of the conveyor line 1. The bottom ends of the two linear electric actuators are respectively hinged to the scraper plate 33. The pressing member 34 includes a plurality of L-shaped brackets and a crossbeam. A plurality of L-shaped brackets are arranged side by side on the side plate, and the L-shaped bracket includes a horizontal part and a vertical part. The horizontal part is respectively connected to the side plate and the vertical part, and the bottom ends of the vertical parts are connected to the crossbeam. Among them, the side plate abuts one side of the scraper plate 33, and the crossbeam abuts the other side of the scraper plate 33.

[0039] Optionally, an adjustment mechanism is provided between the vertical portion and the side panel, and is used to adjust the pressure exerted by the side panel and crossbeam on the scraper blade 33. Specifically, the adjustment mechanism includes a stud and a nut. One end of the stud is fixedly connected to the side panel, and the other end passes through a through-hole in the vertical portion. The nut is mounted on the stud and abuts against the side of the vertical portion facing away from the side panel. The nut can exert pressure on the vertical portion, which is converted into pressure exerted by the side panel and crossbeam on the scraper blade 33. By tightening the nut, the pressure exerted by the side panel and crossbeam on the scraper blade 33 can be adjusted.

[0040] Specifically, if Figure 7 As shown, the sowing stand 4 comprises a mounting base 41, a mounting bracket 42, and at least four telescopic mechanisms 43. The mounting bracket 42 is positioned above the mounting base 41, and the planter 5 is mounted on the mounting bracket 42. The four telescopic mechanisms 43 are arranged in a matrix on the mounting base 41; the bottom end of each telescopic mechanism 43 is fixedly connected to the mounting base 41, and the top end of each telescopic mechanism 43 is rotatably connected to the mounting bracket 42. Each telescopic mechanism 43 is capable of vertical extension and contraction.

[0041] In this embodiment, the mounting base 41 is used to support and fix other structures of the sowing stand 4. It is understandable that the mounting base 41 can be fixedly set on the ground. For example, the mounting base 41 can be installed below the conveyor line 1. Four telescopic mechanisms 43 arranged in a matrix are fixedly set on the mounting base 41. The top ends of the four telescopic mechanisms 43 are rotatably connected to the mounting bracket 42 respectively. The mounting bracket 42 is used to fix and install the seed drill 5 for testing. The four telescopic mechanisms 43 can be independently extended and retracted. By controlling the extension and retraction of the four telescopic mechanisms 43 in the vertical direction, the height and angle of the mounting bracket 42 can be controlled, and the height and angle of the seed drill 5 can be adjusted.

[0042] In a specific embodiment, Figure 7As shown, the four telescopic mechanisms 43 are four hydraulic cylinders, the cylinder bodies of the hydraulic cylinders are fixedly mounted on the mounting seat 41, and the piston rods are rotatably connected to the mounting bracket 42 through universal joints or ball hinges. Two hydraulic cylinders are located on one side of the conveyor line 1, and the remaining two hydraulic cylinders are located on the other side of the conveyor line 1. By inputting instructions to the hydraulic cylinders through the control system, the four hydraulic cylinders can be telescoped to adjust the height, roll angle and pitch angle of the mounting bracket 42 and the planter 5 to simulate the posture changes of the planter 5 during actual work. Specifically, if the four hydraulic cylinders have the same telescopic amount, the position of the mounting bracket 42 and the planter 5 can be adjusted in the vertical direction. If the telescopic amount of the four hydraulic cylinders is not exactly the same, the roll angle and pitch angle of the mounting bracket 42 and the planter 5 can be adjusted.

[0043] In some embodiments, as Figure 8 and Figure 9 As shown, the conveying line 1 includes: a line body 11 and a sealing structure 12. The line body 11 is used to convey soil. The sealing structure 12 is covered on the line body 11.

[0044] In this embodiment, the line body 11 is used to receive the soil supplied by the soil supply device 2 and transport it through the soil thickness adjustment device 3 and the sowing stand 4 in sequence for testing. The sealing structure 12 is used to cover the line body 11 to form a relatively closed environment, which can not only prevent soil leakage, but also reduce the influence and interference of external factors on the test results. Specifically, in some embodiments, the line 11 includes a conveyor belt 111. The conveyor belt 111 includes a first belt 112 and two second belts 113 arranged side by side. The first belt 112 extends horizontally, with one second belt 113 connected to one side of the first belt 112 and the other second belt 113 connected to the other side of the first belt 112. Both second belts 113 are inclined upward relative to the first belt 112.

[0045] In this embodiment, the two second belt bodies 113 are respectively connected to the two sides of the first belt body 112. The two second belt bodies 113 are inclined belt bodies that are inclined upward from the first belt body 112, so that the three belt bodies form a belt structure with a trapezoidal cross-section, wherein the horizontally arranged first belt body 112 is mainly used to receive and transport the soil supplied by the soil supply device 2, and the second belt bodies 113 on both sides of the first belt body 112 can prevent the soil from leaking to both sides of the conveyor line 1.

[0046] Specifically, the line body 11 typically also includes a trapezoidal frame, a transmission wheel, a drive motor, a speed reducer, and a tensioning device. The trapezoidal pipe frame is used to mount and secure the first belt body 112, the two second belt bodies 113, the transmission wheel, the drive motor, the speed reducer, and the tensioning device. The first belt body 112 and the two second belt bodies 113 are each wound around corresponding transmission wheels. The drive motor is connected to the transmission wheel via a speed reducer to drive the transmission wheel to rotate, thereby driving the first belt body 112 and the two second belt bodies 113 to move synchronously. The tensioning device is respectively in contact with the first belt body 112 and the two second belt bodies 113 to ensure that the first belt body 112 and the two second belt bodies 113 maintain appropriate tension during operation to prevent slipping or loosening.

[0047] Specifically, in some embodiments, Figure 8 and Figure 9 As shown, the sealing structure 12 includes side guards 121 and a cover plate 122, which are arranged corresponding to the second belt body 113. The side guards 121 extend vertically and are arranged above the second belt body 113. Sealing friction blocks 123 are provided between the side guards 121 and the corresponding second belt body 113 to seal the gap between the side guards 121 and the corresponding second belt body 113. The cover plate 122 is connected to the top end of each side guard 121.

[0048] In this embodiment, the side guards 121, cover plate 122, second belt body 113, and first belt body 112 can enclose and form a relatively closed conveying and testing environment, preventing soil leakage while reducing interference with test results caused by external factors. Furthermore, by providing a sealing friction block 123 between the side guards 121 and second belt body 113, the sealing friction block 123 is configured to frictionally contact the side guards 121 and second belt body 113, respectively, to close the gap between the side guards 121 and the corresponding second belt body 113, further ensuring the sealing between the side guards 121 and second belt body 113 during the movement of the conveyor belt 111.

[0049] Specifically, if Figure 8 and Figure 9 As shown, both the side guard 121 and the cover plate 122 can be mounted on the trapezoidal frame. The sealing friction block 123 has a T-shaped structure, comprising a horizontally arranged first portion and a vertically arranged second portion. One end of the first portion abuts the corresponding second belt 113, and the other end is connected to the middle of the second portion. The second portion is attached to the outer side of the corresponding side guard 121, and the bottom end of the second portion abuts the second belt 113. A pressing structure is provided on the outer side of the side guard 121, and the second portion of the pressing structure abuts to press the second portion against the side guard 121.

[0050] It is understandable that both the side baffle 121 and the cover plate 122 can be a combined structure assembled from multiple panels, and the tester can extend or shorten the length of the side baffle 121 and the cover plate 122 according to actual needs.

[0051] Alternatively, as Figure 9 As shown, a light source 6 and a high-speed camera 7 can be installed at the bottom of the cover 122. The light source 6 is used to provide uniform illumination of the soil on the conveyor line 1, and the high-speed camera 7 is used to record the soil flow and sowing process in real time, so that the test personnel can measure the sowing grain distance based on the video, calculate the grain distance qualification index and the grain distance variation coefficient, and thus evaluate the sowing quality.

[0052] Optionally, in some embodiments, the sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment is further provided with a control system, which includes a central controller, a sensor group and a user interface.

[0053] The central controller is connected to the user interface. The sensor group includes a soil thickness sensor, a posture sensor, a speed sensor, and a pressure sensor. The soil thickness sensor detects soil thickness, the posture sensor detects the posture of the planter 5, and the speed sensor detects the conveying speed of the conveyor line 1. The sensor group is connected to the central controller.

[0054] Experimenters can preset test parameters through the user interface. The central controller can control the operating parameters of each actuator (conveyor line 1, soil supply device 2, soil thickness adjustment device 3, sowing stand 4) according to the monitoring data fed back by the sensor group and the test parameters to complete the test and realize automated control of the test.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sowing test bench device capable of online adjusting the posture of sowing units and soil environment, characterized in that: include: conveyor line for conveying soil; A soil supply device, a soil thickness adjustment device, and a sowing stand are sequentially arranged along the conveying direction of the conveying line; The soil supply device is used to supply soil to the conveying line; The soil thickness adjustment device is used to adjust the soil thickness on the conveyor line; The sowing stand is used for installing a test sowing machine and can adjust the height and angle of the sowing machine.

2. The sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment according to claim 1 is characterized in that: The soil supply device comprises: The hopper is used to accommodate soil, and the bottom of the hopper is provided with a discharge port facing the conveying line.

3. The sowing test bench device capable of online adjusting the sowing unit posture and soil environment according to claim 2 is characterized in that: The soil supply device also includes: The first screw conveying mechanism includes a first driving member, a first rotating shaft, and a first spiral blade, wherein the first rotating shaft is disposed in the hopper and extends along the conveying direction of the conveying line, and a first end of the first rotating shaft extends outside the hopper through the discharge port; the first spiral blade spirally surrounds the outer wall of the first rotating shaft along the axial direction of the first rotating shaft, and the first driving member is in transmission connection with the first rotating shaft to drive the first rotating shaft to rotate; The second screw conveying mechanism includes a second driving member, a second rotating shaft, and a second spiral plate. The second rotating shaft and the first rotating shaft are arranged side by side. The first end of the second rotating shaft extends to the outside of the hopper through the discharge port. The second spiral plate spirally surrounds the outer wall of the second rotating shaft along the axial direction of the second rotating shaft. The second driving member is in transmission connection with the second rotating shaft to drive the second rotating shaft to rotate. The first spiral sheet and the second spiral sheet have opposite rotation directions, and the first rotation axis and the second rotation axis have opposite rotation directions.

4. The sowing test bench device capable of online adjusting the sowing unit posture and soil environment according to claim 3 is characterized in that: The pitch of the first helical plate gradually decreases from the second end to the first end of the first rotating shaft; the pitch of the second helical plate gradually decreases from the second end to the first end of the second rotating shaft.

5. The sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment according to claim 1 is characterized in that: The soil thickness adjusting device comprises: A fixed bracket, fixedly arranged above the conveying line; A lifting mechanism is provided on the fixed bracket; The scraper blade is arranged on the lifting mechanism; the lifting mechanism is used to adjust the relative height of the scraper blade and the conveying line, and the scraper blade is used to contact the soil to flatten the soil.

6. The sowing test bench device capable of online adjusting the sowing unit posture and soil environment according to claim 5 is characterized in that: The soil thickness adjusting device further comprises: The pressing member is arranged on the fixing bracket, a part of the structure of the fixing bracket abuts against one side of the scraper plate, and the pressing member abuts against the other side of the scraper plate.

7. The sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment according to claim 1 is characterized in that: The sowing stand comprises: Mounting seat; A mounting bracket is arranged above the mounting seat, and the seeder is arranged on the mounting bracket; At least four telescopic mechanisms are arranged in a matrix on the mounting base; the bottom end of each telescopic mechanism is fixedly connected to the mounting base, the top end of each telescopic mechanism is rotatably connected to the mounting bracket, and each telescopic mechanism can be telescoped in the vertical direction.

8. The sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment according to claim 1 is characterized in that: The conveying line comprises: a line body, for conveying the soil; The sealing structure is covered on the wire body.

9. The sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment according to claim 8 is characterized in that: The line body comprises: The conveyor belt includes a first belt body and two second belt bodies arranged side by side; the first belt body is extended in a horizontal direction, one of the second belt bodies is connected to one side of the first belt body, and the other second belt body is connected to the other side of the first belt body, and both second belt bodies are inclined upward relative to the first belt body.

10. The sowing test bench device capable of online adjusting the posture of the sowing unit and the soil environment according to claim 9 is characterized in that: The sealing structure comprises: A side baffle is provided corresponding to the second belt body; the side baffle extends in the vertical direction and is provided on the upper side of the second belt body, and a sealing friction block is provided between the side baffle and the corresponding second belt body to close the gap between the side baffle and the corresponding second belt body; The cover plates are respectively connected to the top ends of the side baffles.

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