A wheat double-axle rotary seeder is provided with a grass cutting and mud scraping knife roller structure

Abstract

The application discloses a wheat double-axial rotary seeder grass cutting and mud scraping knife roller structure and relates to the technical field of cultivation equipment. The grass cutting and mud scraping knife roller structure comprises a double-rotary tillage knife group, the double-rotary tillage knife group comprises a front rotary tillage knife group and a rear rotary tillage knife group, the front rotary tillage knife group comprises a front rotary tillage knife shaft and a plurality of groups of front rotary tillage knives, the plurality of groups of front rotary tillage knives are arranged in a herringbone shape on the front rotary tillage knife shaft; the rear rotary tillage knife group comprises a rear rotary tillage knife shaft and a plurality of groups of rear rotary tillage knives, the rear rotary tillage knives comprise right rotary tillage knives and left rotary tillage knives, tangent blade directions of the right rotary tillage knives and the left rotary tillage knives are opposite, the right rotary tillage knives and the left rotary tillage knives are staggered to form a group of rear rotary tillage knives, and each group of rear rotary tillage knives is arranged in a spiral shape on the rear rotary tillage knife shaft; a seed guiding pipe is arranged between the front rotary tillage knife shaft and the rear rotary tillage knife shaft, and a seed outlet of the seed guiding pipe is located at the rear side of the rear rotary tillage knife shaft. The double-rotary tillage knife group is used for fully mixing soil and fertilizer, and the double-rotary tillage knife group is used for alternately cleaning blockages of the seed guiding pipe, so that the wheat seeding efficiency and the seeding quality are greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cultivation equipment, and particularly relates to a grass cutting and mud scraping knife roller structure for a wheat double-shaft rotary seeder. BACKGROUND

[0002] In order to improve crop yield and increase soil fertility, the method of returning straw to field is generally used in agricultural cultivation, that is, after harvesting fruits and food, crop straws such as corn straws are broken in the field, and become organic fertilizer after rotting. This method is an effective cultivation method for water and soil conservation in dryland agriculture.

[0003] At present, in the implementation of mechanized seeding and fertilization, the no-tillage seeder is one of the main tools for conservation tillage. However, some no-tillage seeders cannot cut off the surface coverings and root stubbles of crops such as wheat during wheat seeding due to unreasonable design, and cannot make the fertilizer and soil better mixed. The rotary tillage seeder can cut and crush the surface coverings and root stubbles during wheat seeding, but the existing rotary tillage seeder cannot well handle the weeds and clay in the field during work, resulting in uneven wheat seeding, and even the outflow port may be blocked by sundries, which brings great problems to the rotary tillage seeding. SUMMARY

[0004] The purpose of the present application is to provide a grass cutting and mud scraping knife roller structure for a wheat double-shaft rotary seeder, so as to solve the problems that the rotary tillage seeder in the prior art cannot effectively handle the weeds and clay in the field during work, resulting in uneven wheat seeding, and sundries are easily blocked in the outflow port during work.

[0005] To achieve the above purpose, the following technical scheme is adopted in the present application:

[0006] A grass cutting and mud scraping knife roller structure for a wheat double-shaft rotary seeder, comprising a double rotary tillage knife group, the double rotary tillage knife group comprising a front rotary tillage knife group and a rear rotary tillage knife group, the front rotary tillage knife group and the rear rotary tillage knife group being installed between a left side plate and a right side plate, a left transmission box being installed on the left side plate, a right transmission box being installed on the right side plate, the left transmission box driving the front rotary tillage knife group to work, the right transmission box driving the rear rotary tillage knife group to work;

[0007] The front rotary tillage knife group comprises a front rotary tillage knife shaft and a plurality of groups of front rotary tillage knives, the plurality of groups of front rotary tillage knives being arranged in a herringbone shape on the front rotary tillage knife shaft;

[0008] The rear rotary tillage knife group comprises a rear rotary tillage knife shaft and a plurality of groups of rear rotary tillage knives, the rear rotary tillage knife comprising a right rotary tillage knife and a left rotary tillage knife, the tangent blade direction of the right rotary tillage knife being opposite to that of the left rotary tillage knife, the right rotary tillage knife and the left rotary tillage knife being staggered to form a group of rear rotary tillage knives, each group of rear rotary tillage knives being arranged in a spiral shape on the rear rotary tillage knife shaft, and the plurality of groups of rear rotary tillage knives being arranged in sequence on the rear rotary tillage knife shaft;

[0009] The front rotary tiller shaft is arranged in front of the rear rotary tiller shaft, and the height of the front rotary tiller shaft is lower than that of the rear rotary tiller shaft; a seed guiding pipe is arranged between the front rotary tiller shaft and the rear rotary tiller shaft, and the tail of the seed guiding pipe is bent to bypass the bottom of the rear rotary tiller shaft, so that the seed outlet of the seed guiding pipe is located at the rear side of the rear rotary tiller shaft.

[0010] Preferably, the arrangement of the plurality of groups of front rotary tillers in a herringbone shape on the front rotary tiller shaft is achieved by arranging the plurality of groups of front rotary tillers in a herringbone shape along the central axis of the front rotary tiller shaft; the front rotary tiller is a blade structure with the back of the blade inward and the tip of the blade outward, and the tip of the blade of the front rotary tiller in the same group is oriented in the same direction and the tip of the blade of the front rotary tiller in the adjacent group is oriented in the opposite direction by different installation directions, so that the front rotary tillers in each two groups also form a herringbone structure, and the tips of the blades of the plurality of groups of front rotary tillers are symmetrically arranged along the central axis of the front rotary tiller shaft. This arrangement can make the front rotary tiller generate a greater centripetal force when rotating, throwing the soil outward, thereby forming a groove. The herringbone arrangement of the two adjacent groups of front rotary tillers can be staggered, so that the formed groove presents a herringbone shape.

[0011] Preferably, the blade of the front rotary tiller has a larger volume, about 1.2 times that of the rear rotary tiller blade, and the diameter of the front rotary tiller shaft is also larger, about 100 mm, while the diameter of the rear rotary tiller shaft is only 80 mm; the position of the front rotary tiller shaft is closer to the ground than that of the rear rotary tiller shaft, and under the premise of larger diameter and larger volume of the blade, the front rotary tiller shaft can better tear the soil, crush the straw and weeds, and better mix the fertilizer, and has a deeper working depth, providing conditions for the better work of the rear rotary tiller group.

[0012] Preferably, the rear rotary tiller group further comprises a plurality of groups of mud scraping blades, and the plurality of groups of mud scraping blades comprise a plurality of groups of right mud scraping blades and a plurality of groups of left mud scraping blades, each group of right mud scraping blades and left mud scraping blades being arranged in a spiral shape on the rear rotary tiller shaft.

[0013] The plurality of groups of right mud scraping blades and left mud scraping blades are arranged in a staggered manner on the rear rotary tiller shaft, and each group of rear rotary tillers is located between the right mud scraping blades and the left mud scraping blades.

[0014] Preferably, the adjacent right rotary tillers and left rotary tillers in the same group of rear rotary tillers form a 45-degree angle, and the adjacent mud scraping blades in the same group of right mud scraping blades or left mud scraping blades form a 90-degree angle.

[0015] Each rear rotary tiller in each group of rear rotary tillers corresponds to each rear rotary tiller in the adjacent group of rear rotary tillers, and is located on the same horizontal line, and the same horizontal line on which the rear rotary tillers are located is a right rotary tiller or a left rotary tiller.

[0016] The mud scraping blades are located between the right rotary tillers or the left rotary tillers in the same horizontal line of the two groups of rotary tillers.

[0017] Preferably, the right mud scraping blades are located between the right rotary tillers in the two groups of rotary tillers, and the left mud scraping blades are located between the left rotary tillers in the two groups of rotary tillers.

[0018] Preferably, each right mud scraping blade or left mud scraping blade is provided with a seed guide pipe, and the seed guide pipe is located between the right mud scraping blade and the nearest left mud scraping blade on the right side of the right mud scraping blade; the right mud scraping blade and the left mud scraping blade on the two sides of the seed guide pipe form an angle of 135 degrees; and the right mud scraping blade and the left mud scraping blade are used for scraping the seed outlet of the seed guide pipe.

[0019] The side of the right mud scraping blade or the left mud scraping blade away from the seed guide pipe is two rotary tillers in the same vertical plane, the two rotary tillers form an angle of 180 degrees, and the two rotary tillers are right rotary tillers or left rotary tillers; the right mud scraping blade or the left mud scraping blade is located between the two adjacent rotary tillers, and forms an angle of 90 degrees with the two rotary tillers; the directions of the rotary tiller blades in the same cross section are the same, the directions of the blades of the adjacent rotary tillers in the same spiral line are opposite, and form an angle of 45 degrees. The arrangement on the two sides of each seed guide pipe is the same, only the angle is different. The adjacent rotary tillers enter the soil in turn, the mud scraping blades are turned to the seed outlet to clean the blockage of the seed outlet, and the blockage of the seed outlet is prevented more efficiently.

[0020] Further, the distance between the blade face of the mud scraping blade and the seed guide pipe is 5 mm, the distance between the blade libraries of the mud scraping blades on the two sides of the seed guide pipe is 48-66 mm, and the distance between the rotary tiller and the mud scraping blade is 5 mm, so that the mud scraping blade is closer to the seed guide pipe, and the rotary tiller does not interfere with the seed guide pipe when working.

[0021] Further, the diameter of the seed guide pipe is about 45 mm, and the outlet of the seed guide pipe is designed as a plane to facilitate the cleaning of the seed guide pipe by the mud scraping blade.

[0022] Preferably, the right mud scraping blade and the left mud scraping blade are mud scraping blades with the same structure and opposite blade directions, the blade direction of the right mud scraping blade is to the right, and the blade direction of the left mud scraping blade is to the left.

[0023] Preferably, the right mud scraping blade comprises a base and a blade face; the base is provided with a fixing hole, the base is connected to the blade face through a bending part, the blade face is arc-shaped, one end of the blade face away from the bending part is a bevel part, one side of the blade face is provided with a blade edge, and the blade edge gradually increases from the bending part to the bevel part.

[0024] Further, the blade has a large curvature, the blade surface has a certain bending, the bending position connects the blade and the bottom seat, so that the cutter body presents an S shape, the design of the mud scraping cutter makes the blade more easily close to the seed tube and the blockage of sundries between the cutter body and the seed tube is avoided.

[0025] Preferably, the seed tube is communicated with the pneumatic seed metering device, and the pneumatic seed metering device is used for discharging seeds to flow out of the seed tube for sowing.

[0026] Preferably, a fertilizer box is arranged above the left side plate and the right side plate, a fertilizer discharge shaft is arranged below the fertilizer box, a fertilizer discharger is connected to the fertilizer discharge shaft, and a fertilizer discharge plate is arranged at the bottom of the fertilizer discharge shaft.

[0027] A gearbox is arranged at the rear side of the fertilizer discharge plate, left and right transmission shafts are arranged at the two sides of the gearbox, respectively, the left transmission shaft drives the chain in the left transmission box to drive the front rotary tiller group to work, and the right transmission shaft drives the chain in the right transmission box to drive the rear rotary tiller group to work.

[0028] Preferably, the pneumatic seed metering device is arranged at the rear side of the fertilizer box, the pneumatic seed metering device is arranged on the cross frame, the cross frame is arranged on the two arc-shaped supports, and the arc-shaped supports are arranged on the frame and the pedal at the front and rear ends, respectively.

[0029] A roller is arranged at the rear side of the rear rotary tiller shaft, the roller is connected to the rear sides of the left side plate and the right side plate through a connecting block, a mud scraping plate is arranged at the rear side of the roller, and the mud scraping plate is connected below the pedal.

[0030] Compared with the prior art, the present application has the following advantages:

[0031] (1), the front rotary tiller and the rear rotary tiller are arranged at a certain distance, and the position of the front rotary tiller relative to the frame is lower than that of the rear rotary tiller; the front rotary tiller is larger in size than the rear rotary tiller, and the front rotary tillers are distributed in a herringbone shape on the blade shaft, so that the soil can be deeply tilled, the soil and fertilizer can be fully mixed, the soil layer can be stirred, and the straw can be crushed, thereby providing good conditions for the work of the rear rotary tiller group and the seed tube seed metering; the rear rotary tiller is small in size, so that the rear rotary tiller group and the seed tube cooperate to work, the overall longitudinal length of the entire fertilizer and seeding machine is reduced, the damage of the rear rotary tiller to the seeds is reduced, and the rear rotary tiller has a certain soil covering ability for the seeds through rotation, so that shallow rotary covering wheat seeding is realized; the grass cutting and mud scraping blade roller structure of the double-shaft rotary seeder in the application can effectively cut off the root stubble during wheat seeding, and the soil and fertilizer are fully mixed by quickly turning the soil layer, so that the work efficiency is improved.

[0032] (2), the rear rotary tiller of the double rotary tiller structure is provided with a mud scraping blade with a small size on the blade shaft, the mud scraping blade is small in size, and under the arrangement mode of the rear rotary tiller shaft, the working of the rear rotary tiller shaft is more stable, the overall stress of the blade roller is uniform, and the vibration is smaller; since the mud scraping blade has a certain curvature, the blade surface is closer to the seed tube, and the structure more effectively improves the cleaning effect on the seed tube opening, effectively prevents the seed outlet from being blocked, avoids the seed outlet from being blocked, and avoids reducing the power consumption of the tractor.

[0033] (3), the mud scraping blade and the rear rotary tiller adopt a specific arrangement mode on the rear rotary tiller shaft, so that the positions of the mud scraping blade and the rear rotary tiller relative to the seed tube are also specific; one pair of mud scraping blades are arranged at an angle of 135° on both sides of the seed tube, and alternately clean the seed tube, so as to reduce the phenomenon that the seeds are stuck in the seed tube, avoid the seeds from being retained or pressed in the seed tube, and protect the integrity of the seeds. The mud scraping blade on one side of the seed tube is located in the middle of the two rotary tillers, can help clean the sundries and water in the soil, so that the rotary tiller can work more smoothly during tillage, and the working efficiency is improved. The arrangement mode of the blade shaft is beneficial to the crushing of hard and large pieces of soil, so as to protect the rotary tiller from being damaged, because the mud scraping blade can remove hard objects and sundries in the soil, avoid the blade from being worn or damaged, and prolong the service life of the machine.

[0034] (4), the pneumatic seed metering device is adopted in the application to improve the wheat seeding efficiency, the seed falling speed is faster through the pneumatic seed metering device, the wheat seeding is more accurate, the pneumatic seed metering device is matched with the double rotary tiller structure, the wheat seeding efficiency is greatly improved, and the seed outlet is not blocked. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structure schematic diagram of the double-shaft rotary seeder in the application.

[0036] Figure 2 Structure diagram of the connection between the double rotary tiller group and the gearbox in the application;

[0037] Figure 3 Structure diagram of the double rotary tiller group in the application;

[0038] Figure 4 Arrangement diagram of the blades on the front rotary tiller shaft in the application;

[0039] Figure 5 Partial structure diagram of the rear rotary tiller group in the application;

[0040] Figure 6 Arrangement diagram of the blades on the rear rotary tiller shaft in the application;

[0041] Figure 7 Structure diagram of the right mud scraping blade in the application.

[0042] In the figure: 1, fertilizer box; 2, fertilizer discharge shaft; 3, fertilizer discharger; 4, machine frame; 5, fertilizer distribution plate; 6, left side plate; 7, left transmission box; 8, front rotary tiller shaft; 9, front rotary tiller; 10, right side plate; 11, rear rotary tiller; 12, right transmission box; 13, roller; 14, mud scraping plate; 15, pedal; 16, arc-shaped support; 17, cross frame; 18, pneumatic seed metering device; 19, rear rotary tiller shaft; 20, seed guide tube; 21, right mud scraping blade; 211, base; 212, curved part; 213, blade surface; 214, blade edge; 215, inclined part; 216, blade edge; 22, right transmission shaft; 23, left transmission shaft; 24, gearbox; 25, rotary tiller blade library; 26, right mud scraping blade library; 27, left mud scraping blade library; 28, left mud scraping blade; 29, right rotary tiller; 30, left rotary tiller. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0044] Embodiment 1:

[0045] Referring to Figures 1-7 , the embodiment provides a wheat double rotary tillage and fertilizer seeding machine.

[0046] As Figure 1As shown, the seeder comprises a frame 4, a left side plate 6, a right side plate 10, two lower fertilizer plates 5, a fertilizer discharge shaft 2, a seed metering device, a fertilizer tank 1, two arc-shaped supports 16, a front rotary tiller 9, a rear rotary tiller 11, a left transmission box 7, a right transmission box 12, and a roller 13. The fertilizer tank 1 is installed on the left side plate 6 and the right side plate 10 and is supported by the frame 4. The fertilizer tank 1 is provided below with the fertilizer discharge shaft 2, and the fertilizer discharge shaft 2 is connected with a fertilizer discharge device 3. The fertilizer discharge shaft 2 is provided at the bottom with the lower fertilizer plates 5, the upper ends of which are connected with the fertilizer tank 1, and the lower ends of which are connected with the frame 4. The upper end of the frame 4 is connected with the fertilizer tank 1 for supporting the fertilizer tank 1. The left side plate 6 and the right side plate 10 are respectively provided with the left transmission box 7 and the right transmission box 12. The bottom of the left transmission box 7 and the right transmission box 12 is provided with a front rotary tiller shaft 8 and a rear rotary tiller shaft 19. The left side plate 6 and the right side plate 10 are provided with the roller 13 through a connecting block. The roller 13 is located at the rear side of the rear rotary tiller shaft 19. The seed metering device is installed on a cross frame 17, which is built on the two arc-shaped supports 16. The arc-shaped supports 16 are respectively installed on the frame 4 and a step 15 at the front and rear ends. The rear side of the roller 13 is provided with a mud scraping plate 14, which is connected below the step 15.

[0047] As shown in the embodiment, Figure 2 In the double rotary tiller structure, the front rotary tiller group and the rear rotary tiller group are formed. The front rotary tiller group and the rear rotary tiller group are respectively installed on the left side plate 6 and the right side plate 10. The left side plate 6 and the right side plate 10 are respectively provided with the left transmission box 7 and the right transmission box 12 at the left and right sides. The left transmission shaft 23 and the right transmission shaft 22 are respectively installed at the two sides of the transmission box 24. The transmission shaft drives the chains of the left transmission box 7 and the right transmission box 12 at the left and right sides to drive the front rotary tiller group and the rear rotary tiller group to work.

[0048] As shown in the embodiment, Figure 3 The front rotary tiller group is driven by the left transmission box 7. The front rotary tiller 9 of the front rotary tiller group is larger than the rear rotary tiller 11. The position of the front rotary tiller shaft 8 is lower than that of the rear rotary tiller shaft 19. The front rotary tiller 9 is arranged in a herringbone staggered manner. The diameter of the front rotary tiller shaft 8 is larger than that of the rear rotary tiller shaft 19. The diameter of the front rotary tiller shaft 8 is 100 mm, and the diameter of the rear rotary tiller shaft 19 is 80 mm. The front rotary tiller 9 deeply tills the soil when working, fully mixes the soil and the fertilizer, stirs the soil layer, and breaks the straw, thereby providing good conditions for the work of the rear rotary tiller group and the seed guiding tube 20. The front rotary tiller shaft 8 is connected with a rotary tiller knife library 25, and the front rotary tiller 9 is installed on the rotary tiller knife library 25.

[0049] Specifically, as shown in the embodiment, Figure 4As shown, the herringbone arrangement of the front rotary blades 9 refers to arranging and disposing the front rotary blades 9 in a herringbone shape, in which the backs of the two front rotary blades 9 are inward and the tips are outward, forming a herringbone structure. This arrangement can make the front rotary blades 9 generate a greater centripetal force when rotating, throwing the soil outward, thereby forming a groove. Since the herringbone arrangement of the two front rotary blades 9 can be staggered, the formed groove presents a herringbone shape.

[0050] In this embodiment, as shown in Figure 3 The rear rotary blade group has a relatively high position and smaller rotary blades, and the arrangement of the rear rotary blades 11 is different from that of the front rotary blades 9. The rear rotary blade group is arranged in sequence, and the rotary blade magazine 25 is connected to the rear rotary blade shaft 19, and the rear rotary blades 11 are installed on the rotary blade magazine 25. The rear rotary blades 11 perform shallow plowing and loosen the soil, further mix the fertilizer and break the straw, and also have the function of burying seeds. The seed guide tube 20 extends between the rotary blades, and the seed guide tube 20 and the rear rotary blades 11 do not interfere with each other. The rear rotary blades 11 do not interfere with the seed guide tube 20 when working.

[0051] In this embodiment, as shown in Figure 3 The seed guide tube 20 and the rear rotary blade group are two independent entities. The seed guide tube 20 is installed at the front of the rear rotary blade shaft 19, and the seed guide tube 20 is bent at the tail to make the seed outlet behind the rear rotary blade shaft 19. This structure avoids damage to the seeds by the rotary blades and reduces the overall longitudinal length of the entire fertilizer and seeding machine. The rotation of the rotary blades also has a certain covering ability for the seeds, realizing shallow rotary covering and seeding. This structure can also eliminate the need for a furrowing structure, allowing the rear rotary blade group and the seed guide tube 20 to work together, greatly reducing the longitudinal length of the overall mechanism, and allowing the roller 13 to be directly installed behind the rear rotary blade group.

[0052] Specifically, as shown in Figure 5As shown, the diameter of the seed guide tube 20 is about 45mm. There is a left scraper magazine 27 and a right scraper magazine 26 on each side of the seed guide tube 20. The left scraper magazine 27 and the right scraper magazine 26 are welded to the rear rotary tillage shaft 19. The edge-to-edge distance between the left scraper magazine 27 and the right scraper magazine 26 is between 48mm and 66mm. They are used to install the left scraper 28 and the right scraper 21. The scrapers are installed on the rear rotary tillage shaft 19. The side of the scraper close to the seed guide tube 20 is 5m away from the seed guide tube 20. m, the right scraper 21 and left scraper 28 on the left and right sides of the seed guide tube 20 form a 135-degree angle. The scrapers are located between the two adjacent rear rotary blades 11 and are not in the same column as these two adjacent rear rotary blades 11. The space on both sides of the seed guide tube 20 is used to place two pairs of adjacent rear rotary blades 11 and two scrapers. The two pairs of rear rotary blades 11 form a 45-degree angle on the rear rotary blade shaft 19. The two scrapers close to the seed guide tube 20 are welded to the middle of the angle between the two pairs of adjacent rear rotary blades 11. During operation, the rear rotary blades 11 perform shallow tillage to loosen the soil, while the left and right scrapers take turns to clean weeds and clay at the opening of the seed guide tube 20.

[0053] Specifically, if Figure 6 As shown in the figure, the arrangement of the blades of the rear rotary tillage blade group on the rear rotary tillage blade shaft 19 is expanded. In the expanded figure, there is a seed guide tube 20 between the right rotary tillage blade 29 and the left rotary tillage blade 30. The position of the seed guide tube 20 relative to the rear rotary tillage blade shaft 19 is as shown in the figure. Figure 6 Indicated by the dashed line, the left rotary tiller 30 and the right rotary tiller 29 are two pairs of adjacent rotary tillers with opposite cutting edges. The cutting edges of the two adjacent blades on the same spiral line face opposite directions and form a 45-degree angle. During operation, they penetrate the soil sequentially. The right scraper 21 and the left scraper 28 on the same side of the seed guide tube 20 are arranged in a spiral, forming a straight line when expanded. The right scraper 21 and the left scraper 28 on the left and right sides of the seed guide tube 20 form a 135-degree angle. The distance n between the adjacent left rotary tiller 30 and the right rotary tiller 29 between the two seed guide tubes 20 is between 60mm and 70mm, and the distance m between the adjacent left rotary tiller 30 and the right rotary tiller 29 on both sides of the seed guide tube 20 is between 80mm and 90mm. Each scraper blade is between two adjacent rotary tillers with the same cutting edge and a difference of 90 degrees. The scraper and the rotary tiller are not located in the same section. The distance q between the right rotary tiller 29 and the right scraper 21 is about 5mm, and the two rotary tillers with the same cutting edge form an angle of 180 degrees.

[0054] In this embodiment, Figure 7 As shown, a scraper is installed in the rear rotary tillage blade group, and the scraper includes a right scraper 21 and a left scraper 28. The right scraper 21 and the left scraper 28 are both configured as the following scraper structures:

[0055] The total length of the scraper is 121.61 mm. The blade base 211 is a rectangular block of 30*9.5*50 mm. There is a fixing hole with a diameter of 12.5 mm at the base 211. The center of the fixing hole is 20 mm away from the bottom edge and 15 mm away from the side edge. A curved portion 212 is designed at the connection blade 214, and the curved portion 212 to the inclined portion 215 at the tip of the blade is connected by an arc with a radius of 74.53 mm. The arc is the blade edge 216. The blade 214 of the scraper gradually increases from the curved portion 212 and extends to the inclined portion 215. The length of the contact portion with the inclined portion 215 is 10 mm. The thickness of the blade 214 gradually decreases to 3 mm, and the width of the blade 214 gradually increases from the curved portion 212 to 10 mm. A notch is designed at the inclined portion 215, and the notch is connected to the curved portion 212 by an arc to form a blade surface 213. The blade surface 213 gradually increases from the curved portion 212. The overall base 211 of the scraper is small, and the blade edge 216 gradually narrows after passing through the curved portion 212. The blade 214 gradually increases and has a certain curvature.

[0056] The blade tends to become thinner from the curved portion 212 to the tip, and the blade width tends to become larger. Since the scraper has a certain curvature as a whole, the blade surface 213 is closer to the seed guide tube 20. This structure more effectively improves the cleaning effect of the seed guide tube 20 and effectively prevents the seed outlet from being blocked.

[0057] Example 2:

[0058] This embodiment provides a pneumatic double rotary tillage seeder for wheat including the double rotary tillage structure provided in the above-mentioned embodiment 1. The seed meter adopts a pneumatic seed meter 18. By cooperating with the pneumatic seed meter 18 and the double rotary tillage structure, the wheat sowing efficiency is greatly improved. There is no need to worry about the seed outlet being blocked. The pneumatic seed meter 18 makes the seeds fall faster and the sowing more accurate. The double rotary tillage structure can more effectively cut off the stubble, avoid the stubble of straw, reduce the power consumption of the tractor, and improve the working efficiency.

[0059] When the seeder is in operation, the front and rear rotary tiller shafts 8 and 19 begin to work. The front rotary tiller 9 works at a deeper depth, deeply tilling the soil and thoroughly mixing the soil and fertilizer. The rear rotary tiller 11 further breaks up the soil and weeds. The pneumatic seed meter 18 discharges seeds, which flow out of the seed guide tube 20 for sowing, allowing the seeds to fall quickly to the ground. The scrapers installed on the rear rotary tiller shaft 19 effectively clear weeds and clay entangled in the seed guide port of the seed guide tube 20, preventing weeds or straw stubble from clogging the seed outlet of the seeder and affecting operation. Scrapers are installed on both sides of the seed guide port, with the two scrapers forming a 135-degree angle, alternating to clear blockages in the seed guide port, greatly improving wheat sowing efficiency and sowing quality.

[0060] The above is only used for helping understanding the method of the present application and its core idea, but the protection scope of the present application is not limited thereto. For the general technical personnel in the technical field, according to the technical scheme of the present application and its inventive concept, equivalent replacement or change within the technical range disclosed by the present application should be covered in the protection scope of the present application. In summary, the content of the present specification should not be understood as the limitation of the present application.

Claims

1. A mowing and scraping blade roller structure for a double-axis rotary seeding machine for wheat, comprising a double rotary blade group, wherein the double rotary blade group comprises a front rotary blade group and a rear rotary blade group, wherein the front rotary blade group and the rear rotary blade group are mounted between a left side plate (6) and a right side plate (10), wherein a left transmission box (7) is mounted on the left side plate (6), and a right transmission box (12) is mounted on the right side plate (10), wherein the left transmission box (7) drives the front rotary blade group to operate, and the right transmission box (12) drives the rear rotary blade group to operate, and wherein the structure is characterized in that: The front rotary tillage blade group comprises a front rotary tillage blade shaft (8) and a plurality of groups of front rotary tillage blades (9), wherein the plurality of groups of front rotary tillage blades (9) are arranged in a herringbone shape on the front rotary tillage blade shaft (8); The rear rotary tillage blade group comprises a rear rotary tillage blade shaft (19) and a plurality of rear rotary tillage blades (11), wherein the rear rotary tillage blades (11) comprise a right rotary tillage blade (29) and a left rotary tillage blade (30), wherein the tangential edges of the right rotary tillage blade (29) and the left rotary tillage blade (30) are in opposite directions, and the right rotary tillage blades (29) and the left rotary tillage blades (30) are arranged in a staggered manner to form a group of rear rotary tillage blades (11), wherein each group of rear rotary tillage blades (11) is arranged in a spiral shape on the rear rotary tillage blade shaft (19), and the plurality of groups of rear rotary tillage blades (11) are sequentially arranged on the rear rotary tillage blade shaft (19); The front rotary tillage blade shaft (8) is arranged on the front side of the rear rotary tillage blade shaft (19), and the height of the front rotary tillage blade shaft (8) is lower than the height of the rear rotary tillage blade shaft (19); a seed guide tube (20) is provided between the front rotary tillage blade shaft (8) and the rear rotary tillage blade shaft (19), and the tail of the seed guide tube (20) is bent around the bottom of the rear rotary tillage blade shaft (19), so that the seed outlet of the seed guide tube (20) is located on the rear side of the rear rotary tillage blade shaft (19); The rear rotary tillage blade group further comprises a plurality of groups of scrapers, the plurality of groups of scrapers comprising a plurality of groups of right scrapers (21) and a plurality of groups of left scrapers (28), each group of right scrapers (21) and left scrapers (28) being arranged in a spiral shape on the rear rotary tillage blade shaft (19); A plurality of groups of right scrapers (21) and left scrapers (28) are staggeredly arranged on the rear rotary blade shaft (19), and each group of rear rotary blades (11) is located between the right scraper (21) and the left scraper (28); The right scraper (21) and the left scraper (28) are used to scrape mud from the seed outlet of the seed guide tube (20).

2. The mowing and scraping blade roller structure for a wheat dual-shaft rotary seeding machine according to claim 1 is characterized in that: The adjacent right rotary tillage blades (29) and left rotary tillage blades (30) in the same group of rear rotary tillage blades (11) form an angle of 45 degrees, and the adjacent scrapers in the same group of right scrapers (21) or left scrapers (28) form an angle of 90 degrees; Each rear rotary tiller (11) in each group of rear rotary tillers (11) corresponds to each rear rotary tiller (11) in the adjacent group of rear rotary tillers (11) and is located on the same horizontal line, and the rear rotary tillers (11) on the same horizontal line are all right-hand rotary tillers (29) or left-hand rotary tillers (30); The scraper blades are located between the right rotary tiller blades (29) or the left rotary tiller blades (30) on the same horizontal line in the two groups of rear rotary tiller blades (11), and the scraper blades are located on the same horizontal line as the right rotary tiller blades (29) or the left rotary tiller blades (30).

3. The mowing and scraping blade roller structure for a wheat dual-shaft rotary seeding machine according to claim 2, characterized in that: The right scraper (21) is located between the right rotary tillage blades (29) in the two groups of rear rotary tillage blades (11), and the left scraper (28) is located between the left rotary tillage blades (30) in the two groups of rear rotary tillage blades (11).

4. A mowing and scraping blade roller structure for a wheat dual-shaft rotary seeding machine according to claim 2 or 3, characterized in that: A seed guide tube (20) is provided on the right side of each right scraper (21) or on the left side of each left scraper (28), and the seed guide tube (20) is located between the right scraper (21) and the left scraper (28) closest to the right side of the right scraper (21), and the right scraper (21) and the left scraper (28) on both sides of the seed guide tube (20) form an angle of 135 degrees; On the side of the right scraper (21) or the left scraper (28) away from the seed guide tube (20) are two rear rotary tillers (11) on the same vertical plane, the two rear rotary tillers (11) form an angle of 180 degrees, and the two rear rotary tillers (11) are both right rotary tillers (29) or left rotary tillers (30); the right scraper (21) or the left scraper (28) is located between the two adjacent rear rotary tillers (11) and forms an angle of 90 degrees with the two rear rotary tillers (11).

5. The mowing and scraping blade roller structure for a wheat dual-shaft rotary seeding machine according to claim 4, characterized in that: The right scraper (21) and the left scraper (28) are scrapers with the same structure and blades (214) facing opposite directions. The blade (214) of the right scraper (21) faces right, and the blade (214) of the left scraper (28) faces left.

6. The mowing and scraping roller structure for a wheat dual-shaft rotary seeding machine according to claim 5, characterized in that: The right scraper (21) comprises a base (211) and a blade (213); a fixing hole is provided on the base (211); the base (211) is connected to the blade (213) via a curved portion (212); the blade (213) is arc-shaped; an end of the blade (213) away from the curved portion (212) is an inclined portion (215); and a blade edge (216) is provided on one side of the blade (213); a blade edge (214) on the blade edge (216) gradually increases in size from the curved portion (212) and extends to the inclined portion (215).

7. The mowing and scraping roller structure for a wheat dual-shaft rotary seeding machine according to claim 6, characterized in that: The seed guide tube (20) is connected to a pneumatic seed metering device (18), and the pneumatic seed metering device (18) is used to discharge seeds from the seed guide tube (20) for sowing.

8. The mowing and scraping roller structure for a wheat dual-shaft rotary seeding machine according to claim 7, characterized in that: A fertilizer box (1) is installed above the left side plate (6) and the right side plate (10), a fertilizer discharge shaft (2) is installed below the fertilizer box (1), a fertilizer discharger (3) is connected to the fertilizer discharge shaft (2), a lower fertilizer plate (5) is provided at the bottom of the fertilizer discharge shaft (2), the lower fertilizer plate (5) is located at the front side of the front rotary tillage blade group, the upper end of the lower fertilizer plate (5) is connected to the fertilizer box (1), and the lower end is connected to the frame (4), the upper end of the frame (4) is connected to the fertilizer box (1), and is used to support the fertilizer box (1); A gearbox (24) is provided on the rear side of the fertilizer discharging plate (5), and a left transmission shaft (23) and a right transmission shaft (22) are respectively installed on both sides of the gearbox (24). The left transmission shaft (23) drives the chain in the left transmission box (7) to drive the front rotary tillage blade group to work, and the right transmission shaft (22) drives the chain in the right transmission box (12) to drive the rear rotary tillage blade group to work.

9. The mowing and scraping blade roller structure for a wheat dual-shaft rotary seeding machine according to claim 8, characterized in that: The pneumatic seed metering device (18) is located at the rear side of the fertilizer box (1). The pneumatic seed metering device (18) is mounted on a cross frame (17). The cross frame (17) is built on two arch-shaped brackets (16). The front and rear ends of the arch-shaped bracket (16) are respectively mounted on the frame (4) and the pedal (15). A pressure wheel (13) is provided on the rear side of the rear rotary tillage blade shaft (19), and the pressure wheel (13) is connected to the rear sides of the left side plate (6) and the right side plate (10) through a connecting block. A mud scraper (14) is provided on the rear side of the pressure wheel (13), and the mud scraper (14) is connected below the pedal (15).

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