An air-suction corn and soybean strip composite planting seeder

Abstract

The present invention discloses an air-suction corn-soybean strip composite planting seeder, comprising: a frame, which is composed of a suspension beam weld, an air duct beam weld and a main beam assembly, and serves as a supporting body of the seeder; a fan assembly, which is located in the middle of the suspension beam weld and is used for providing negative pressure to absorb seeds; a fertilizer box assembly, which is symmetrically fixed on both sides of the upper part of the air duct beam weld and is used for fertilizing when sowing is completed; a sowing unit assembly, which is located behind the fertilizer disc assembly and is hung on the main beam assembly, and is used for free switching between single sowing and composite sowing, and floats with the terrain to ensure consistent sowing depth; a fertilizer disc assembly, which is installed at the front of the main beam assembly. The air-suction corn-soybean strip composite planting seeder has a flexible structure adjustment, can meet the row spacing requirements of composite sowing, has traction sowing capability, is easy to turn around at the head of the field, and is convenient for use.

Description

Technical Field

[0001] The invention relates to the technical field of seed drills, in particular to an air-suction corn-soybean belt-shaped composite planting seed drill. Background Art

[0002] Currently, most of the seed drills on the market can only sow single seeds, and there is a lack of combined seeding equipment that can carry out strip composite planting of corn, soybeans, etc. In addition, when current seed drills are used for composite seeding, there are problems such as difficulty in adjusting the width of the row spacing and difficulty in turning the machine around in the field. There is an urgent need for a model that can achieve composite seeding and has strong adaptability. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an air-suction corn-soybean strip composite planting seeder. The overall structure of the machine is flexible to adjust, can meet the row spacing requirements of composite sowing, has traction sowing capability, and is convenient for turning around at the end of the field, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: an air-suction corn and soybean strip composite planting seeder, comprising:

[0005] The frame, which is composed of the suspension beam welding, the air duct beam welding and the main beam assembly, serves as the supporting body of the seed drill;

[0006] The fan assembly is located in the middle of the suspension beam weld and is used to provide negative pressure to absorb seeds;

[0007] The fertilizer box assembly is symmetrically fixed on both sides of the upper welded part of the air duct beam and is used for fertilizing at the same time as the sowing is completed;

[0008] The sowing unit assembly is located behind the fertilizer disc assembly and is mounted on the main beam assembly. It is used for free switching between single sowing and compound sowing, and floats with the terrain to ensure consistent sowing depth.

[0009] The fertilizer disc assembly is installed at the front of the main beam assembly and corresponds to the sowing unit assembly one by one, and is used to open grooves on the terrain and introduce fertilizer;

[0010] The ground wheel assembly is symmetrically installed on both sides of the front of the main beam assembly to provide power for the seed meter and fertilizer box;

[0011] The transmission assembly includes a seeding device transmission gearbox assembly, a fertilizer box transmission gearbox assembly and a transmission hexagonal shaft. The seeding device transmission gearbox assembly is hung at the rear middle position of the main beam assembly through a hanging plate, and the fertilizer box transmission gearbox assembly is installed on the duct beam weld by bolts. The hexagonal shaft of the ground wheel differential sprocket sequentially passes through the active tower wheels of the seeding device transmission gearbox assembly and the fertilizer box transmission gearbox assembly to provide power for the two gearboxes.

[0012] As a preferred technical solution of the present invention, the fan assembly includes a fan, a fan bracket weld and a fan connecting hose, the fan is installed on the fan bracket weld, the fan bracket weld is connected to the suspension beam weld by bolts, a plurality of holes are arranged on the side of the fan bracket weld, one end of the fan connecting hose is connected to the air inlet of the fan, and the other end of the fan connecting hose is connected to the air outlet of the duct beam weld.

[0013] As a preferred technical solution of the present invention, the fertilizer box assembly includes a fertilizer box body, a fertilizer box cover, a fertilizer box assembly, a fertilizer outlet assembly, a fertilizer box mounting plate, a fertilizer box adjustment handle, a fertilizer box impeller transmission shaft and a fertilizer pipe. The fertilizer box body is installed on the welded top of the air duct beam by bolts, three inclined supports are arranged in the fertilizer box body, a screen is arranged in the fertilizer box body for screening out agglomerated fertilizers, the fertilizer box cover is connected to the fertilizer box body by two hinges, the fertilizer box assembly and the fertilizer outlet assembly are both installed on the fertilizer box mounting plate, the fertilizer box adjustment handle is installed on the outside of the fertilizer box mounting plate, and is connected to the fertilizer box assembly through a fertilizer box adjustment wire strip, an outlet is arranged at the lower part of the fertilizer box assembly, and is connected to the fertilizer disc assembly through a fertilizer pipe, and the fertilizer box assembly is connected to the fertilizer box transmission gearbox assembly through the fertilizer box impeller transmission shaft.

[0014] As a preferred technical solution of the present invention, the sowing monomer assembly includes a hanging rack, a four-link, a driving sprocket, a monomer welded frame, a seed meter, a seed box, a depth limit adjustment mechanism, a crank arm, a depth limit wheel, a furrowing disc, a first scraper plate, a pressure wheel, a weeding wheel, a tension spring, a seed guide tube, a monitor, a furrowing disc mounting shaft and a furrowing device. The front part of the hanging rack is hung on the rear part of the main beam assembly, and the rear part of the hanging rack is connected to the monomer welded frame through a four-link. The four-link includes two upper and lower connecting rods, and the two ends of the connecting rod are respectively hinged to the hanging rack and the monomer welded frame. A tension spring is installed on the four-link, and a driving sprocket is installed in the middle of the hanging rack. The driving sprocket is connected to the seed meter through a transmission hexagonal shaft and a chain. A seed box is installed on the top of the monomer welded frame, and the seed meter is installed in the middle of the monomer welded frame. The outlet of the seed meter is at the same position as the inlet of the seed guide tube. The two ends of the seed guide tube are respectively connected between the two furrowing plates, and monitors are installed on both sides of the seed guide tube. The furrowing plate is installed at the bottom of the single-body welded frame through the furrowing plate mounting shaft, and the furrowing device is arranged on one side of the furrowing plate, and the depth limiting adjustment mechanism and the crank arm are installed at the rear part of the single-body welded frame, and a depth limiting wheel is installed at the front end of the crank arm, and the inner side of the depth limiting wheel is in contact with the outer side of the furrowing plate. The first scraper plate is installed on the crank arm, and the pressing wheel is installed at the rear part of the single-body welded frame. The pressing wheel includes a pressing wheel bracket, a V-shaped rubber wheel, a pressing pressure adjustment handle and a spring, one end of the spring is connected to the rear part of the single-body welded frame, and the other end of the spring is connected to the pressing pressure adjustment handle, and the grass-pulling wheel is installed at the front part of the single-body welded frame, and the grass-pulling wheel includes a star wheel, a grass-pulling wheel connecting frame, a grass-pulling wheel bracket and a corrugated plate.

[0015] As a preferred technical solution of the present invention, the two shaft heads of the ditching disc mounting shaft have an included angle of 9°, and the included angle of the two ditching discs is 9°.

[0016] As a preferred technical solution of the present invention, the seed metering device includes an air chamber shell, an air chamber inner shell, a seed filling chamber shell, a seeding disk, an air-closing valve seat, an air-closing valve spring sheet, an air-closing valve, a sprocket, an upper seed cleaning knife, a lower seed cleaning knife and a forced seed cleaning device. The seed filling chamber shell is installed on the outer side of the air chamber shell, and the air chamber shell is installed in the middle of the monomer welding frame by bolts. A hollow cylindrical boss is provided in the middle of the air chamber shell, and the central circular hole of the boss corresponds to the bent pipe of the monomer welding frame, which is used to connect the negative pressure pipe. A bearing is installed on the outer side of the boss, and a sprocket is installed on the outer ring of the bearing. The power transmitted by the driving sprocket is received through a chain to rotate. The air chamber shell is installed on the sprocket, and the seeding disk is installed on the air chamber shell. An air-closing valve seat is installed on the top of the air chamber shell, and the air-closing valve is installed on the air-closing valve seat through the air-closing valve spring sheet. An upper seed cleaning knife and a lower seed cleaning knife are also provided at the front of the seeding disk, and a forced seed cleaning device is provided at the lower part of the seed filling chamber shell.

[0017] As a preferred technical solution of the present invention, the fertilizer disc assembly includes a hanger weld, a bracket weld, a support spring, a fertilizer disc adjustment seat, a fertilizer disc, a fertilizer guide pipe and a second scraper plate. The hanger weld is hung on the front of the main beam assembly and corresponds one-to-one with the sowing unit assembly. The front end of the hanger weld is installed with a bracket weld, and two fertilizer discs are installed at the lower part of the bracket weld. The upper part of the bracket weld is installed with a support spring and a fertilizer disc adjustment seat. The fertilizer disc is arranged on the fertilizer disc adjustment seat, one end of the fertilizer guide pipe is connected to the fertilizer pipe, and the other end of the fertilizer guide pipe is an opening, and the second scraper plate is installed at the rear of the furrowing disc.

[0018] As a preferred technical solution of the present invention, it also includes a traction device assembly, which includes a traction frame weld, a hanging beam weld and a transmission spline shaft. The rear part of the traction frame weld is provided with two mounting holes for connecting with the lower suspension point of the suspension beam weld. The middle part of the traction frame weld is connected with the upper suspension point of the suspension beam weld through a pull rod. The transmission spline shaft is arranged in the middle part of the traction frame weld. The hanging beam weld is connected with the traction frame weld through a pin shaft.

[0019] As a preferred technical solution of the present invention, it also includes a loading step assembly, which is hung at the rear of the main beam assembly and is located outside the sowing unit assembly.

[0020] As a preferred technical solution of the present invention, a transport wheel assembly is arranged on the outer side of the main beam assembly, and the transport wheel assembly is connected to the hydraulic mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the air-suction corn-soybean strip composite planting seeder can fertilize and sow corn and soybeans at the same time, realize corn-soybean strip composite planting, and meet the sowing of two crops at the same farming time; the row spacing and plant spacing can be freely adjusted by setting the sowing unit assembly to adapt to the agronomic requirements of corn-soybean strip composite planting in various places; at the same time, by replacing the seed tray, it can switch freely between single sowing and composite sowing, one machine has multiple uses, each sowing unit has an independent four-link profiling mechanism, the sowing unit can float with the terrain, ensuring that the sowing depth is accurate and uniform, the multi-level pressing pressure of the pressure wheel is adjustable, which enhances the pressing effect on the seeds and reduces the occurrence of seed drying; it has traction sowing capability and the whole machine has a compact structure and a short length, which is convenient for turning around at the head of the field, greatly improving the ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 3It is a left side view of the present invention;

[0025] Figure 4 It is a first structural schematic diagram of a sowing unit assembly;

[0026] Figure 5 is a second structural schematic diagram of the sowing unit assembly;

[0027] Figure 6 It is a schematic diagram of the structure of the pressing wheel;

[0028] Figure 7 It is a structural schematic diagram of a grass-pulling wheel;

[0029] Figure 8 It is a structural schematic diagram of a seed meter;

[0030] Fig. 9 It is a structural schematic diagram of the fertilizing disc assembly;

[0031] Fig.10 is a side view of the fertilizing disc assembly;

[0032] Fig.11 It is a schematic diagram of the structure of the traction device assembly.

[0033] In the figure: 1 suspension beam welding, 2 air duct beam welding, 3 fan assembly, 4 fertilizer box assembly, 5 ground wheel assembly, 6 seed row transmission gearbox assembly, 7 sowing unit assembly, 8 fertilizer disc assembly, 9 feeding step assembly, 10 main beam assembly, 11 fertilizer box transmission gearbox assembly, 12 traction device assembly, 201 fan, 202 fan bracket welding, 203 fan connecting hose, 204 fertilizer box body, 205 fertilizer box cover, 20 6 Fertilizer box assembly, 207 fertilizer outlet assembly, 208 fertilizer box mounting plate, 209 fertilizer box adjustment handle, 210 fertilizer box impeller drive shaft, 211 fertilizer pipe, 401 hanger, 402 four-link, 403 drive sprocket, 404 single welded frame, 405 seeding device, 406 seed box, 407 depth limit adjustment mechanism, 408 crank arm, 409 depth limit wheel, 410 furrowing disc, 411 first scraper plate, 412 pressure wheel, 413 Weeding wheel, 414 tension spring, 501 seed guide tube, 502 monitor, 503 furrowing disc mounting shaft, 504 furrowing device, 601 pressure wheel bracket, 602 V-shaped rubber wheel, 603 pressure adjustment handle, 604 spring, 701 star wheel, 702 weeding wheel connecting frame, 703 weeding wheel bracket, 704 corrugated disc, 801 air chamber shell, 802 air chamber shell, 803 seed filling chamber shell, 804 seeding disc, 8 05 air-closing valve seat, 806 air-closing valve spring sheet, 807 air-closing valve, 808 sprocket, 809 upper seed-cleaning knife, 810 lower seed-cleaning knife, 811 forced seed-cleaning device, 901 bracket welding, 902 bracket welding, 903 support spring, 904 fertilizer disc adjustment seat, 905 fertilizer disc, 906 fertilizer guide pipe, 907 second scraper plate, 1001 traction frame welding, 1002 hanging beam welding, 1003 transmission spline shaft. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the embodiment of the present invention). Figure 2 The top is above, Figure 2 All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work shall fall within the scope of protection of the present invention.

[0035] See also Figure 1The present invention provides a technical solution: an air-suction corn and soybean strip composite planting seeder includes a suspension beam weld 1, an air duct beam weld 2, a fan assembly 3, a fertilizer box assembly 4, a ground wheel assembly 5, a seeding device transmission gearbox assembly 6, a sowing unit assembly 7, a fertilizer disc assembly 8, a feeding step assembly 9, a main beam assembly 10, a fertilizer box transmission gearbox assembly 11, a traction device assembly 12 and a transport wheel assembly. The suspension beam weld 1 is fixedly connected to the front center of the main beam assembly 10 for connecting the tractor assembly 12. The pulling machine or traction device assembly 12, the air duct beam weld 2 is installed on the air duct beam mounting seat of the suspension beam weld 1, and the air duct beam has support plates on both sides connected to the main beam assembly 10 to strengthen the support. The fan assembly 3 is installed in the center of the suspension beam weld 1, and its height can be adjusted by adjusting the hole position. The fertilizer box assembly 4 is symmetrically installed on both sides of the air duct beam weld 2, and the ground wheel assembly 5 is installed on both sides of the front of the main beam assembly 10. The top of the ground wheel assembly 5 passes through the hexagonal transmission shaft and is connected to the seeding device transmission gearbox assembly 6. The transmission gearbox assembly 6 is mounted at the rear center of the main beam assembly 10, and two hexagonal transmission shafts pass through it, one connected to the ground wheel assembly 5, and the other connected to the sowing monomer assembly 7. The plant spacing is adjusted by changing the transmission ratio of the sprocket in the seeding device transmission gearbox assembly 6. The sowing monomer assembly 7 is mounted at the rear of the main beam assembly 10. The specific sowing type, row spacing, and number are determined by agronomy and can be flexibly adjusted. The fertilizer disc assembly 8 is installed at the front of the main beam assembly 10, and is respectively connected to the sowing monomer assembly 7. Correspondingly, the loading step assembly 9 is hung at the rear of the main beam assembly 10, located on the outside of the outermost sowing monomer assemblies 7 on both sides, to facilitate the addition of fertilizer. The fertilizer box transmission gearbox assembly 11 is fixed to the duct beam fixing frame by bolts, and has two hexagonal transmission shafts passing through, one connected to the ground wheel assembly 5, and the other connected to the fertilizer box of the fertilizer box assembly 4. When transportation operations are required, the transport wheel assembly is symmetrically hung on the outermost rear part of the main beam assembly 10, and the seeder is lifted off the ground by a hydraulic mechanism for short-distance transportation.

[0036] The suspension beam weld 1 comprises an upper suspension frame and a lower suspension frame, which are connected together by welding and are respectively used to connect the upper pull rod and the lower pull rod of the tractor. The suspension beam weld 1 is hung on the main beam through a hanging plate.

[0037] like Figure 2 , Figure 3 As shown, the fan assembly 3 mainly includes a fan 201, a fan bracket weld 202, and a fan connecting hose 203. The fan 201 is installed on the fan bracket weld 202. The fan bracket weld 202 is connected to the suspension beam weld 1 by bolts. There are multiple holes on the side of the fan bracket weld 202. The fan height can be adjusted by changing the position of the mounting bolts. One end of the fan connecting hose 203 is connected to the air inlet of the fan 201, and the other end is connected to the air outlet of the duct beam weld 2.

[0038] The fertilizer box assembly 4 includes a fertilizer box body 204, a fertilizer box cover 205, a fertilizer box assembly 206, a fertilizer outlet assembly 207, a fertilizer box mounting plate 208, a fertilizer box adjustment handle 209, a fertilizer box pulsator drive shaft 210 and a fertilizer pipe 211. The fertilizer box body 204 is installed on the top of the air duct beam weld 2 by bolts. There are three inclined supports in the fertilizer box body 204 for supporting the fertilizer box. A screen is also installed in the fertilizer box body 204 for screening out agglomerated fertilizers. The fertilizer box cover 205 is connected to the fertilizer box body 204 by two hinges. A lock is installed on the fertilizer box body 204 to lock the fertilizer box cover 205 to prevent accidental opening due to strong winds. The fertilizer box assembly 206 and the fertilizer outlet assembly 207 are both installed on the fertilizer box mounting plate 208. Generally, the fertilizer outlet assembly 207 is installed outside. The second position on the side is to ensure that the fertilizer box can meet the needs of each fertilizing disc assembly 8 and avoid fertilizer blockage or poor installation of the fertilizer pipe. The fertilizer box adjustment handle 209 is installed on the outside of the fertilizer box mounting plate 208 and is connected to the fertilizer box assembly 206 through the fertilizer box adjustment wire strip. By rotating the fertilizer box adjustment handle 209, the baffle in the fertilizer box can be moved to change the effective length of the impeller, thereby realizing the adjustment of the fertilizer discharge amount and matching the fertilizer amount with the crop and agronomy; the fertilizer box assembly 206 has an outlet at the bottom, which is connected to the fertilizing disc assembly 8 through the fertilizer pipe 211, so that the fertilizer can be smoothly led out into the ground. The fertilizer box assembly 206 is connected to the fertilizer box transmission gearbox assembly 11 through the fertilizer box impeller transmission shaft 210. The excess fertilizer in the fertilizer box can be removed through the fertilizer outlet 207 to prevent the fertilizer from deteriorating and corroding the fertilizer box assembly 206.

[0039] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the sowing unit assembly 7 mainly includes a bracket 401, a four-link 402, a driving sprocket 403, a unit welded frame 404, a seed meter 405, a seed box 406, a depth limit adjustment mechanism 407, a crank arm 408, a depth limit wheel 409, a furrowing disc 410, a first scraper plate 411, a pressure wheel 412, a weeding wheel 413, a four-link tension spring 414, a seed guide tube 501, a monitor 502, a furrowing disc mounting shaft 503 and a furrowing device 504. The front part of the bracket 401 is hung on the rear part of the main beam assembly 10, and the rear part of the bracket 401 is connected to the unit welded frame 404 through the four-link 402. The four-link 402 includes The two connecting rods are respectively hinged to the bracket 401 and the single-body welded frame 404 at both ends. When sowing, the single-body welded frame 404 can swing up and down around the bracket 401 to ensure that the sowing unit can float and morph with the terrain, thereby improving the consistency of sowing depth. The four-link tension spring 414 is also installed on the four-link to adjust the downward pressure of the morphing to adapt to different ground conditions. A driving sprocket 403 is installed in the middle of the bracket 401. The power of the ground wheel is transmitted to the seeding device 405 through the transmission hexagonal shaft and chain. The seed box 406 is fixedly installed on the top of the single-body welded frame 404, and the seeding device 405 is fixedly installed in the middle. The outlet of the seeding device 405 is connected to the seed guide The seed guide tube 501 corresponds to the entrance of the tube 501, ensuring that the seeds can smoothly enter the seed guide tube 501 after leaving the seed metering device, and enter the seed furrow under the guidance of the seed guide tube 501. The seed guide tube 501 is installed between the two furrowing discs 410. Monitors 502 are installed on both sides of the seed guide tube 501 to monitor the sowing situation and issue an alarm. The furrowing disc 410 is installed at the bottom of the single welded frame 404 through the furrowing disc installation shaft 503. Since the two shaft heads of the furrowing disc installation shaft 503 have an angle of 9°, the angle between the two furrowing discs is also 9°. Through the furrowing disc with an angle and the furrowing device 504, a seed furrow with a certain width can be drawn on the ground. The depth limiting adjustment mechanism 407 and the crank arm 408 are installed at the rear part of the single body welding frame 404. The crank arm 408 is connected to the welding frame through the crank arm shaft welded on the single body welding frame 404. Eccentric sleeves of 4.5° are installed on both sides of the crank arm shaft, so that the angle between the two crank arms is also 9°. A depth limiting wheel 409 is installed at the front end of the crank arm 408. The inner side of the depth limiting wheel 409 is fitted with the outer side of the furrowing disc 410 to prevent soil from entering the depth limiting wheel and causing the depth limiting wheel to be blocked by soil. By rotating the handwheel of the depth limiting adjustment mechanism 407, the angle between the crank arm 408 and the horizontal direction is changed, thereby changing the height of the depth limiting wheel 409 from the ground to adjust the sowing depth. A first scraper plate 411 is installed on the crank arm 408 to scrape off the clay on the outside of the depth limiting wheel to prevent the depth limiting wheel from slipping and getting stuck with soil. The pressing wheel 412 is installed at the rear end of the single welded frame 404 and is connected to the welded frame by bolts. The pressing wheel 412 includes a pressing wheel bracket 601, a V-shaped rubber wheel 602, a pressing pressure adjustment handle 603 and a spring 604.One end of the spring 604 is connected to the rear of the single welded frame 404, and the other end is connected to the adjustment handle 603. By adjusting the position of the adjustment handle 603, the elongation of the spring 604 is changed to obtain different suppression pressures to meet the needs of different crops. The weeding wheel 413 is installed at the front of the single welded frame 404 and connected to the welded frame by bolts. The weeding wheel 413 includes a star wheel 701, a weeding wheel connecting frame 702, a weeding wheel bracket 703, and a corrugated plate 704. The weeding wheel 412 is a stubble breaking and ridge clearing device. Through the star wheel 701 and the corrugated plate 704, the weeds on the ground and the previous crop can be cut off and pushed away, creating favorable conditions for subsequent furrowing.

[0040] like Figure 8 As shown, the seeding device 405 mainly includes an air chamber shell 801, an air chamber inner shell 802, a seed filling chamber shell 803, a seeding disc 804, a gas-closing valve seat 805, a gas-closing valve spring sheet 806, a gas-closing valve 807, a sprocket 808, an upper seed cleaning knife 809, a lower seed cleaning knife 810 and a forced seed cleaning device 811. The seed filling chamber shell 803 is installed on the outside of the air chamber shell 801 and is fastened by bolts with handles. The air chamber shell 801 is installed on the single welded frame 404 by bolts. In the middle, there is a hollow cylindrical boss in the middle of the air chamber shell 801, and the central circular hole of the boss corresponds to the bent pipe of the single welded frame 404, which is used to connect the negative pressure pipe to form a negative pressure environment in the seed metering device for seed adsorption; a bearing is installed on the outer side of the boss, and the sprocket 808 is installed on the outer ring of the bearing, and the power transmitted by the drive sprocket 403 is received through the chain to rotate, and the air chamber inner shell 802 is installed on the sprocket 808 and rotates with the sprocket 808, and the seeding disc 804 is installed in the air chamber inner shell 802 On the air chamber shell 801, and rotates together with the air chamber shell 802. By replacing the seeding discs with different numbers of holes and diameters, the seeder can realize the sowing of different crops. For example, when the two side monomers use 32-hole corn sowing discs and the four middle monomers use 64-hole soybean sowing discs, the seeder can realize 4+2 corn and soybean strip composite planting; and when the six monomers all use 32-hole corn sowing discs, the seeder can realize single corn sowing. At the same time, the number of holes and the gear position of the gearbox can also change the sowing spacing; on the top of the air chamber shell 801, a closing valve seat 805 is installed, and the closing valve 807 is installed on the closing valve seat 805 through the closing valve spring sheet 806. When the closing valve 807 is installed, it is at an angle of 25° with the horizontal direction. Under the elastic force of the closing valve spring sheet 806, it is close to the inner side of the seeding disc 804, which is used to close the holes on the seeding disc 804, isolate the negative pressure, and make the seeds adsorbed on the holes leave the seeding device 405 under the action of gravity;

[0041] In order to ensure that only one seed is adsorbed on each shaped hole, an upper seed cleaning knife 809 and a lower seed cleaning knife 810 are also provided at the front of the seeding disc 804. When reseeding or missed sowing occurs, the positions of the upper seed cleaning knife 809 and the lower seed cleaning knife 810 can be readjusted to increase or reduce the effect of the seed cleaning knife on the seeds, so that only one seed is adsorbed on each shaped hole to ensure precise sowing. The forced seed cleaner 811 is installed at the lower left part of the seed filling chamber housing 803. After the seeding machine is used for a long time, the inner side of the air-closing valve 807 will be worn. If it is not replaced in time, the air-closing effect will be poor. When the shaped hole passes through the air-closing valve, the seeds will not fall. At this time, as the seeding disc continues to rotate to the position of the forced seed cleaner 811, the seeds will be separated from the shaped hole under the action of the forced seed cleaner 811 and fall into the seed guide tube 501.

[0042] like Fig. 9 and Fig.10 As shown, the fertilizer disc assembly 8 mainly includes a hanger weld 901, a bracket weld 902, a support spring 903, a fertilizer disc adjustment seat 904, a fertilizer disc 905, a fertilizer guide pipe 906 and a second scraper 907. The hanger weld 901 is hung on the front of the main beam assembly 10 and corresponds to the sowing monomer assembly 7 one by one, but the two are offset by 10 to 15 cm to avoid fertilizer burning. The front end of the hanger weld 901 is installed with a bracket weld 902 and connected by bolts. Two fertilizer discs 905 are installed at the lower part of the bracket weld 902. The two discs are installed at an angle of 9° to the ground. A fertilizer ditch is opened on the surface, and a support spring 903 and a fertilizer disc adjustment seat 904 are installed on the upper part of the bracket weld 902. By adjusting the position of the fertilizer disc adjustment seat 904, the compression amount of the support spring 903 can be changed, thereby changing the pressure of the fertilizer disc 905 on the ground, so that fertilizer trenches can be opened in different soil types. One end of the fertilizer guide pipe 906 is connected to the fertilizer pipe 211, and the other end is an opening, so that fertilizer can be introduced into the fertilizer trench. The second scraper plate 907 is installed at the rear of the ditching disc 410, and is divided into an inner scraper plate and an outer scraper plate. The clay on the fertilization disc 905 can be removed in time.

[0043] like Fig.11 As shown, since this planter is a no-till planter, it is heavy. If the tractor has a small horsepower, its suspension may not be able to carry it. In this case, it is necessary to use traction to sow. Fig.10As shown, the traction device assembly mainly includes a traction frame weld 1001, a hanging beam weld 1002, and a transmission spline shaft 1003. The rear part of the traction frame weld 1001 has two mounting holes for connecting with the lower hanging point of the suspension beam weld 1. The middle part of the traction frame weld 1001 has two mounting holes, which are connected with the upper hanging point of the suspension beam weld 1 through a pull rod. The middle part of the traction frame weld 1001 also has a transmission spline shaft 1003 for connecting the transmission shaft between the seeder and the tractor. The hanging beam weld 1002 is connected to the traction frame weld 1001 through a pin shaft, and has two shafts at the front part for connecting the tractor lower pull rod, so that the tractor can tow the seeder through the traction frame.

[0044] The working process of the seeder is as follows: first, connect the tractor to the seeder, and drive the seeder to work through the tractor. During the overall movement driven by the tractor, the ground wheel contacts and rotates with the ground, and drives the seeding device transmission gearbox assembly 6 and the fertilizer box transmission gearbox assembly 11 to operate through the transmission hexagonal shaft. At the same time, the tractor PTO works, driving the fan 201 to generate negative pressure. Under the action of the negative pressure generated by the fan 201, the seeds will be adsorbed on the molded holes of the seeding disc 804, and through the seeding device transmission gearbox assembly 6, the power of the ground wheel can be transmitted to the seeding device. 405, drives the seeding disc 804 and the seeds adsorbed thereon to rotate together. When the seeds rotate to the position of the air-closing valve 807 with the seeding disc, due to the disappearance of negative pressure, the seeds leave the seeding device 405 under the action of gravity, enter the seed guide tube 501, and enter the seed furrow opened by the furrowing disc 410 under the guidance of the seed guide tube 501, thereby realizing the sowing process. At the same time, the fertilizer box transmission gearbox assembly 11 drives the impeller in the fertilizer box to rotate, and transfers the fertilizer from the fertilizer box body 204 to the fertilizer pipe 211, and then falls into the fertilizer furrow after passing through the fertilizer guide pipe 906, thereby realizing the fertilization action synchronously.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-suction corn and soybean strip composite planting seeder, Features: include: The frame is composed of a suspension beam welded together (1), a duct beam welded together (2) and a main beam assembly (10), and serves as the supporting body of the seed drill; The fan assembly (3) is located in the middle of the suspension beam weld (1) and is used to provide negative pressure to absorb seeds. The fan assembly (3) comprises a fan (201), a fan bracket weld (202) and a fan connecting hose (203). The fan (201) is installed on the fan bracket weld (202). The fan bracket weld (202) is connected to the suspension beam weld (1) by bolts. A plurality of holes are arranged on the side of the fan bracket weld (202). One end of the fan connecting hose (203) is connected to the air inlet of the fan (201), and the other end of the fan connecting hose (203) is connected to the air outlet of the duct beam weld (2). A fertilizer box assembly (4) is symmetrically fixed on both sides of the upper part of the air duct beam weld (2) and is used for fertilizing at the same time as sowing is completed. The fertilizer box assembly (4) comprises a fertilizer box body (204), a fertilizer box cover (205), a fertilizer box assembly (206), a fertilizer outlet assembly (207), a fertilizer box mounting plate (208), a fertilizer box adjustment handle (209), a fertilizer box impeller drive shaft (210) and a fertilizer pipe (211). The fertilizer box body (204) is mounted on the top of the air duct beam weld (2) by bolts. Three inclined supports are arranged in the fertilizer box body (204). A screen is arranged in the fertilizer box body (204) for The fertilizer is screened to remove agglomerated fertilizers. The fertilizer box cover (205) is connected to the fertilizer box body (204) via two hinges. The fertilizer box assembly (206) and the fertilizer outlet assembly (207) are both mounted on a fertilizer box mounting plate (208). The fertilizer box adjustment handle (209) is mounted on the outside of the fertilizer box mounting plate (208) and is connected to the fertilizer box assembly (206) via a fertilizer box adjustment thread. An outlet is provided at the bottom of the fertilizer box assembly (206) and is connected to the fertilizer disc assembly (8) via a fertilizer pipe (211). The fertilizer box assembly (206) is connected to the fertilizer box transmission gearbox assembly (11) via a fertilizer box impeller transmission shaft (210). The sowing unit assembly (7) is located behind the fertilizing disc assembly (8) and is mounted on the main beam assembly (10). It is used for free switching between single sowing and compound sowing, and floats with the terrain to ensure consistent sowing depth. The sowing unit assembly (7) includes a hanging frame (401), a four-link rod (402), a driving sprocket (403), a unit welding frame (404), a seed meter (405), a seed box (406), a depth limiting adjustment mechanism (407), a crank arm (408), a depth limiting wheel (409), a furrowing disc (410), a first scraper plate (411), a pressure wheel (412), a weeding wheel (413), a tension spring (414), a seed guide tube (501), a monitor (502), a furrowing disc mounting shaft (50 3) and a furrowing device (504), the front part of the hanging frame (401) is hung on the rear part of the main beam assembly (10), the rear part of the hanging frame (401) is connected to the single body welded frame (404) via a four-link rod (402), the four-link rod (402) comprises two upper and lower links, the two ends of the links are respectively hingedly connected to the hanging frame (401) and the single body welded frame (404), a tension spring (414) is installed on the four-link rod (402), a driving sprocket (403) is installed in the middle part of the hanging frame (401), the driving sprocket (403) is connected to the seed metering device via a transmission hexagonal shaft and a chain, a seed box (406) is installed on the top of the single body welded frame (404), and the seed metering device (405) is installed on the single body welded frame (404), the outlet of the seed meter (405) corresponds to the inlet position of the seed guide tube (501), the two ends of the seed guide tube (501) are respectively connected between the two furrowing discs (410), and monitors (502) are installed on both sides of the seed guide tube (501). The furrowing disc (410) is installed on the bottom of the single-body welded frame (404) through the furrowing disc installation shaft (503), and the two shaft heads of the furrowing disc installation shaft (503) have an included angle of 9°. The included angle of the two furrowing discs (410) is 9°. The furrowing device (504) is arranged on one side of the furrowing disc (410), and the depth limiting adjustment mechanism (407) and the crank arm (408) are installed at the rear of the single-body welded frame (404). A depth limiting wheel (409) is installed at the front end of the crank arm (408), the inner side of the depth limiting wheel (409) is in contact with the outer side of the furrowing disc (410), a first scraper plate (411) is installed on the crank arm (408), the pressing wheel (412) is installed at the rear of the single-body welded frame (404), the pressing wheel (412) comprises a pressing wheel bracket (601), a V-shaped rubber wheel (602), a pressing pressure adjustment handle (603) and a spring (604), one end of the spring (604) is connected to the rear of the single-body welded frame (404), and the other end of the spring (604) is connected to the pressing pressure adjustment handle (603), the grass removing wheel (413) is installed at the front of the single-body welded frame (404),The grass-pulling wheel (413) comprises a star wheel (701), a grass-pulling wheel connecting frame (702), a grass-pulling wheel bracket (703) and a corrugated disc (704); The seed metering device (405) comprises an air chamber shell (801), an air chamber inner shell (802), a seed filling chamber shell (803), a seed metering disc (804), an air-blocking valve seat (805), an air-blocking valve spring sheet (806), an air-blocking valve (807), a sprocket (808), an upper seed cleaning knife (809), a lower seed cleaning knife (810) and a forced seed cleaning device (811); the seed filling chamber shell (803) is mounted on the outside of the air chamber shell (801); the air chamber shell (801) is mounted on the middle of the single-body welded frame (404) by bolts; a hollow cylindrical boss is provided in the middle of the air chamber shell (801); a central circular hole of the boss corresponds to the bent pipe of the single-body welded frame (404); A negative pressure pipe is connected, a bearing is installed on the outer side of the boss, a sprocket (808) is installed on the outer ring of the bearing, and the power transmitted by the driving sprocket (403) is received through a chain to rotate, the air chamber inner shell (802) is installed on the sprocket (808), the seeding disc (804) is installed on the air chamber inner shell (802), a closing valve seat (805) is installed on the top of the air chamber shell (801), and the closing valve (807) is installed on the closing valve seat (805) through a closing valve spring sheet (806), an upper seed cleaning knife (809) and a lower seed cleaning knife (810) are also provided at the front of the seeding disc (804), and a forced seed cleaning device (811) is provided at the lower part of the seed filling chamber shell (803); A fertilizer disc assembly (8) is mounted on the front of the main beam assembly (10) and corresponds to each of the sowing monomer assemblies (7) one by one, and is used to open a groove on the terrain and introduce fertilizer. The fertilizer disc assembly (8) includes a welded hanger (901), a welded bracket (902), a support spring (903), a fertilizer disc adjustment seat (904), a fertilizer disc (905), a fertilizer guide pipe (906) and a second scraper plate (907). The welded hanger (901) is hung on the front of the main beam assembly (10) and corresponds to each of the sowing monomer assemblies (7) one by one. The front end of the hanger weld (901) is installed with a bracket weld (902), the lower part of the bracket weld (902) is installed with two fertilizer discs (905), the upper part of the bracket weld (902) is installed with a support spring (903) and a fertilizer disc adjustment seat (904), the fertilizer disc (905) is arranged on the fertilizer disc adjustment seat (904), one end of the fertilizer guide pipe (906) is connected to the fertilizer pipe (211), the other end of the fertilizer guide pipe (906) is open, and the second scraper plate (907) is installed at the rear of the ditching plate (410); The ground wheel assembly (5) is symmetrically mounted on both sides of the front of the main beam assembly (10) to provide power for the seed meter and the fertilizer box; The transmission assembly comprises a seeding device transmission gearbox assembly (6), a fertilizer box transmission gearbox assembly (11) and a hexagonal transmission shaft, wherein the seeding device transmission gearbox assembly (6) is mounted on the rear middle position of the main beam assembly (10) via a mounting plate, and the fertilizer box transmission gearbox assembly (11) is mounted on the duct beam weld (2) via bolts, and the hexagonal shaft of the ground wheel differential sprocket sequentially passes through the driving tower wheels of the seeding device transmission gearbox assembly (6) and the fertilizer box transmission gearbox assembly (11) to provide power for the two gearboxes; The invention also comprises a traction device assembly (12), wherein the traction device assembly (12) comprises a traction frame weld (1001), a hanging beam weld (1002) and a transmission spline shaft (1003), wherein the rear portion of the traction frame weld (1001) is provided with two mounting holes for connecting with the lower hanging point of the hanging beam weld (1), the middle portion of the traction frame weld (1001) is connected with the upper hanging point of the hanging beam weld (1) via a pull rod, the transmission spline shaft (1003) is arranged at the middle portion of the traction frame weld (1001), and the hanging beam weld (1002) is connected with the traction frame weld (1001) via a pin shaft.

2. The air-suction corn and soybean strip composite planting seeder according to claim 1, Features: It also includes a loading step assembly (9), which is hung on the rear part of the main beam assembly (10) and is located outside the sowing unit assembly (7).

3. The air suction corn and soybean strip composite planting seeder according to claim 1, Features: A transport wheel assembly is arranged on the outer side of the main beam assembly (10), and the transport wheel assembly is connected to a hydraulic mechanism.

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