A wheat sowing machine

Abstract

The application discloses a wheat seeding machine and belongs to the field of wheat seeding, which comprises a rack, a rotary tillage structure, a spiral land leveler, a fertilization structure, a seeding structure and a compacting structure. The seeding position of each seeding structure is strictly corresponding to the ridge bottom position formed by the spiral land leveler and the fertilization position of the fertilization structure. The fertilization structure and the seeding structure accurately deliver the fertilizer and the seeds to the same ridge bottom position in sequence, ensuring that the seeds directly fall into the low-lying part of the ridge bottom and coincide with the fertilizer position, forming a "seed and fertilizer in the same hole" effect. The low-lying ridge bottom can effectively accumulate water and reduce evaporation, providing a stable humidity environment for seed germination. The fertilizer is concentratedly distributed around the seeds, avoiding volatilization and loss, and significantly improving the fertilizer efficiency. Finally, the compacting structure is used for compaction, forming a complete seedbed of "loose-ridge-fertilizer-seed-pressing", improving the seeding uniformity, water and fertilizer utilization rate and emergence rate, and laying a foundation for high and stable yield of wheat.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wheat joint seeding, in particular to a wheat seeding machine. BACKGROUND

[0002] The wheat seeding machine is the key equipment for realizing efficient seeding in modern agriculture, but the existing technology generally has the problem of fragmentation of the ridging and seeding links, and it is difficult to integrate the functions of land preparation (rotary tillage and ridging), fertilization, seeding and pressing into continuous and coordinated integrated operation. The traditional seeding machine usually adopts a split design, and after rotary tillage, the equipment needs to be replaced for ridging and seeding, resulting in low operation efficiency and inconsistent ridge shape; the fertilization and seeding positions also lack accurate correspondence, and the fertilizer is easy to scatter on the ridge surface, with low utilization rate, and the seeds are not planted in the low-lying place of the ridge bottom, resulting in poor water retention and uneven emergence. Although some improved schemes try to combine rotary tillage and seeding functions, they still cannot realize accurate matching of the ridge bottom position and seed and fertilizer placement, which restricts the advantages of wheat ridge cultivation technology in water saving and yield increase. Therefore, an integrated device that can integrate the whole process of ridging and seeding and ensure accurate positioning of seeds and fertilizers is urgently needed to improve operation efficiency and planting quality. SUMMARY

[0003] The purpose of the present application is to solve the problem that the traditional technology cannot realize accurate matching of the ridge bottom position and seed and fertilizer placement, which restricts the advantages of wheat ridge cultivation technology in water saving and yield increase, and a wheat seeding machine is designed.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is a wheat seeding machine, comprising a rack, a rotary tillage structure, a spiral soil leveler, a fertilization structure, a seeding structure and a pressing structure.

[0005] The rotary tillage structure is installed on the rack and is used to pulverize the stubble and soil clods of the previous crop and loosen the soil, and the rotary tillage structure and the spiral soil leveler are driven by a chain.

[0006] The spiral soil leveler is installed on the rack and is used to gather the loose soil after rotary tillage to the middle to form a ridge body.

[0007] The fertilization structure is installed on the rack and is used to guide the fertilizer into the ridge bottom, and the fertilization structure and the seeding structure are driven by a chain.

[0008] The seeding structure is installed on the rack and is used to guide the seeds into the ridge bottom.

[0009] The pressing structure is installed on the rack and is used to compact the soil around the seed trench and level the ridge surface, and the seeding structure and the pressing structure are driven by a chain.

[0010] The rotary tillage structure, the spiral land leveler, the fertilizing structure, the seeding structure and the compacting structure are arranged in sequence in the traveling direction during operation on the frame.

[0011] The seeding position of each seeding structure corresponds to the bottom position of the ridge formed by the spiral land leveler and the fertilizing position of the fertilizing structure respectively.

[0012] Preferably, the rotary tillage structure comprises a rotary tillage shell, a connecting support, a first gearbox, a first transmission gear, a rotary tillage blade shaft and rotary tillage blades, the connecting support is fixedly installed on the rotary tillage shell, the first gearbox is fixedly installed on the rotary tillage shell, the first gearbox has three output ends, one of the output ends of the first gearbox is located above the first gearbox and has a first transmission gear fixedly installed at the end, the first transmission gear is driven by a chain, the other two output ends of the first gearbox are located below the first gearbox and on the same axis, one end of each of the two rotary tillage blade shafts towards the center of the rotary tillage structure is fixedly connected with one of the output ends below the first gearbox, the other end of each of the two rotary tillage blade shafts towards the two sides of the rotary tillage structure is rotatably connected with the rotary tillage shell, a plurality of rotary tillage blades are fixedly installed on the rotary tillage blade shafts, and the rotary tillage blades are equidistantly distributed on the rotary tillage blade shafts.

[0013] Preferably, the spiral land leveler comprises a support frame, a second gearbox, a driven gear, a spiral blade shaft and spiral blades, two lifting frames are fixedly installed on the frame, the support frame is fixedly installed below the lifting frame, the second gearbox is fixedly installed on the support frame, the second gearbox has two output ends, the input end of the second gearbox is located above the second gearbox and has a driven gear fixedly installed at the end, the driven gear is driven by a chain, the two output ends of the second gearbox are located below the second gearbox and on the same axis, one end of each of the two spiral blade shafts towards the center of the support frame is fixedly connected with one of the output ends below the second gearbox, the other end of each of the two spiral blade shafts towards the outside is rotatably connected with the support frame, the spiral blades are fixedly installed on the spiral blade shafts, and the spiral blades on the two spiral blade shafts rotate in opposite directions to gather the loose soil after rotary tillage to the middle.

[0014] Preferably, the fertilizing structure comprises a fertilizing box, a fertilizer distributor, a fertilizer hose, a fertilizer positioning cylinder, a second transmission gear, the fertilizing box is fixedly installed on the frame, a plurality of fertilizer distributors are arranged below the fertilizing box, the plurality of fertilizer distributors are equidistantly distributed below the fertilizing box and are fixedly connected with the fertilizing box, each of the fertilizer distributors is correspondingly connected with a fertilizer hose, one end of the fertilizer hose is connected in the fertilizer distributor, the fertilizer positioning cylinder is fixedly installed on the frame, the number of the fertilizer positioning cylinder is consistent with the number of the fertilizer distributor, and the position of the fertilizer positioning cylinder is the fertilizing position of the fertilizing structure, the other end of each of the fertilizer hoses is respectively inserted into one of the fertilizer positioning cylinders, and the second transmission gear is fixedly installed at the end of the transmission shaft of the fertilizer distributor.

[0015] Preferably, the fertilizing structure comprises a fertilizing box, a fertilizer distributor, a fertilizer hose, a fertilizer positioning cylinder, a second transmission gear, the fertilizing box is fixedly installed on the frame, a plurality of fertilizer distributors are arranged below the fertilizing box, the plurality of fertilizer distributors are equidistantly distributed below the fertilizing box and are fixedly connected with the fertilizing box, each of the fertilizer distributors is correspondingly connected with a fertilizer hose, one end of the fertilizer hose is connected in the fertilizer distributor, the fertilizer positioning cylinder is fixedly installed on the frame, the number of the fertilizer positioning cylinder is consistent with the number of the fertilizer distributor, and the position of the fertilizer positioning cylinder is the fertilizing position of the fertilizing structure, the other end of each of the fertilizer hoses is respectively inserted into one of the fertilizer positioning cylinders, and the second transmission gear is fixedly installed at the end of the transmission shaft of the fertilizer distributor.

[0016] Preferably, the adjusting mechanism comprises a connecting shaft, a limiting mechanism, a first belt pulley, a second belt pulley, a linkage shaft, a cam, an adjusting frame, a guide slot, a clamping base, a connecting plate, and a clamping plate, the connecting shaft is rotatably installed on the side of the seeding structure and extends out of the end of the seeding box, the limiting mechanism is fixedly installed on the end of the connecting shaft, the first belt pulley is fixedly installed on the connecting shaft near the inside of the seeding box, the first belt pulley is connected with two second belt pulleys through a belt, the two second belt pulleys are at the same height, each second belt pulley is fixedly installed on a linkage shaft, the two ends of each linkage shaft are rotatably installed on the seeding box, a cam is fixedly installed on each side of each linkage shaft, the guide slot is arranged on the adjusting frame, the number and position of the guide slot correspond to the number and position of the cam, the outer contour of the cam is located in the guide slot of the adjusting frame, all the seeding positioning cylinders are fixedly installed on the adjusting frame, a clamping base is welded on each side of each seeding positioning cylinder, the connecting plate is rotatably installed on the clamping base through a rotating shaft, a torsional spring is sleeved on the rotating shaft, one end of the torsional spring is fixedly installed on the clamping base, the other end of the torsional spring is fixedly installed on the connecting plate, the clamping plate is fixedly installed on the upper end of the connecting plate, and the lower surface of the clamping plate is upwardly inclined from the position of the connecting plate to the position of the seeding positioning cylinder.

[0017] Preferably, the limiting mechanism comprises an adjusting handle, a limiting cap, a reset tension spring, and a clamping groove, the adjusting handle is fixedly installed on the connecting shaft, the limiting cap is slidably installed on the adjusting handle and rotates together with the adjusting handle, the reset tension spring is located in the limiting cap and is sleeved on the adjusting handle, one end of the reset tension spring is fixedly installed on the seeding box, and the other end of the reset tension spring is fixedly installed on the limiting cap, a plurality of clamping grooves are equidistantly arranged in a ring shape on the seeding box with the connecting shaft as the center, and the limiting cap is inserted into the clamping groove on the side of the seeding box.

[0018] Preferably, the limiting mechanism comprises a servo motor and a protective shell, the protective shell is fixedly installed on the outside of the seeding box, and the servo motor is fixedly installed in the protective shell and is fixedly connected with the connecting shaft at the output end.

[0019] Preferably, the compacting structure comprises a bottom plate, a connecting shell, a compacting roller, and a connecting gear, two bottom plates are fixedly installed on the frame, each bottom plate is fixedly installed below a lifting frame, a connecting shell is fixedly installed on each lifting frame, two connecting shells are rotatably installed on the two ends of the compacting roller, one of the connecting shells is internally provided with a driving motor, the output end on one side of the driving motor is fixedly connected with the compacting roller, the output end on the other side of the driving motor is fixedly installed with a connecting gear, and the connecting gear is driven by a chain.

[0020] Preferably, the rotary tiller shell is provided with a hinge plate, and one side of the hinge plate is hinged to the rotary tiller shell via a hinge.

[0021] In summary, this invention provides a wheat seeder with the following beneficial effects: First, the seeding position of each seeding structure strictly corresponds to the ridge bottom position formed by the spiral leveler and the fertilization position of the fertilization structure. This ensures that the seeds fall directly into the low-lying area of ​​the ridge bottom, coinciding with the fertilizer location, creating a "seed and fertilizer in the same hole" effect. The lower ridge bottom effectively retains moisture, reduces evaporation, and provides a stable humidity environment for seed germination; the fertilizer is concentrated around the seeds, preventing volatilization and loss, and significantly improving fertilizer efficiency.

[0022] Secondly, from rotary tillage and leveling to fertilization, sowing, and compaction, each structure is powered by a chain drive to ensure continuous operation. After the rotary tillage structure crushes the soil, the reverse spiral blades of the spiral leveler push the soil towards the center to form a uniform ridge. The reverse spiral design of the spiral leveler can adapt to clay, sand, and high-moisture soils, avoiding the clogging problems of traditional plows. The fertilization and sowing structures deliver fertilizer and seeds precisely to the same ridge bottom position in sequence. Finally, the compaction structure compacts the soil, forming a complete seedbed of "loosening-ridge-fertilizing-sowing-compacting".

[0023] In summary, this invention solves the problems of seed-fertilizer separation and positional deviation in traditional seeders, improves sowing uniformity, water and fertilizer utilization rate and emergence rate, and lays the foundation for high and stable wheat yields. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the first embodiment of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the first embodiment of the present invention viewed from below;

[0026] Figure 3 This is a front structural diagram of the first embodiment of the present invention;

[0027] Figure 4 This is a bottom view structural diagram of the first embodiment of the present invention;

[0028] Figure 5 This is a side view of the first embodiment of the present invention;

[0029] Figure 6 This is the invention described Figure 1 A schematic diagram of the lifting frame at point A is shown.

[0030] Figure 7 This is the invention described Figure 2 A schematic diagram of the adjustment mechanism at point A is shown.

[0031] Figure 8 is a structural schematic diagram of the seed positioning cylinder according to the present application;

[0032] Figure 9 is a sectional view of the limiting mechanism according to the first embodiment of the present application;

[0033] Figure 10 is a three-dimensional structural schematic diagram of the limiting mechanism according to the first embodiment of the present application;

[0034] Figure 11 is a structural schematic diagram of the compacting structure according to the first embodiment of the present application;

[0035] Figure 12 is a sectional view of the limiting mechanism according to the second embodiment of the present application.

[0036] In the figure, 1 is a machine frame; 2 is a rotary tillage structure; 3 is a spiral land leveler; 4 is a fertilizing structure; 5 is a seeding structure; 6 is a compacting structure; 7 is an opening and closing plate; 21 is a rotary tillage shell; 22 is a connecting support; 23 is a first gearbox; 24 is a first transmission gear; 25 is a rotary tillage blade shaft; 26 is a rotary tillage blade; 31 is a support frame; 32 is a second gearbox; 33 is a driven gear; 34 is a spiral blade shaft; 35 is a spiral blade; 41 is a fertilizing box body; 42 is a fertilizer distributor; 43 is a fertilizer discharge hose; 44 is a fertilizer discharge positioning cylinder; 45 is a second transmission gear; 51 is a seeding box body; 52 is a seed metering device; 53 is a seeding hose; 54 is a seeding positioning cylinder; 55 is an opener; 56 is a third transmission gear; 57 is an adjusting mechanism; 571 is a connecting shaft; 572 is a limiting mechanism; 573 is a first pulley; 574 is a second pulley; 575 is a linkage shaft; 576 is a cam; 577 is an adjusting frame; 578 is a guide groove; 57a is a clamping base; 57b is a connecting plate; 57c is a clamping plate; 5721 is an adjusting handle; 5722 is a limiting cap; 5723 is a return tension spring; 5724 is a clamping groove; 5725 is a servo motor; 5726 is a protective shell; 61 is a bottom plate; 62 is a connecting shell; 63 is a compacting roller; and 64 is a connecting gear. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "setting / suiting", "sleeving", "connecting" and the like should be broadly understood, for example, "connecting" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] First embodiment

[0041] Please refer to Figure 1 and Figure 3 , the present application provides a technical scheme: a wheat seeding machine, comprising a rack 1, a rotary tillage structure 2, a spiral land leveler 3, a fertilization structure 4, a seeding structure 5, and a pressing structure 6. The rotary tillage structure 2 is fixedly installed at the rightmost end of the rack 1, and the rotary tillage structure 2 is connected with the spiral land leveler 3 through a chain transmission.

[0042] When working, the rotary tillage structure 2 located at the rightmost end completely pulverizes the stubble and soil clods of the previous crop, loosens the soil, improves the air permeability and water retention, and creates a flat seedbed for subsequent fertilization and seeding. The gearbox of the rotary tillage structure 2 drives the transmission of the spiral land leveler 3 to operate when running.

[0043] Please refer to Figure 2 , the spiral land leveler 3 is located on the left side of the rotary tillage structure 2 and is fixedly installed on the rack 1. The bottom position of each spiral land leveler 3 formed during operation corresponds to the fertilization position of one fertilization structure 4, so that subsequent fertilization can be directly applied to the formed bottom position.

[0044] When working, the spiral land leveler 3 gathers the loosened soil after rotary tillage to the middle, and the blades of the spiral land leveler 3 are in reverse spiral (left-handed and right-handed). The reverse spiral design pushes the soil on both sides to the center and continuously piles up during the travel, forming a ridge body, which is suitable for various soil types such as clay and sandy soil. Even if the soil humidity is relatively high (such as after rain), it can still effectively form ridges, avoiding the sticking and blocking problems of traditional plows.

[0045] Please refer to Figure 4 , the fertilizer structure 4 is located at the left side of the spiral land leveler 3 and is fixedly installed on the frame 1. The fertilizer structure 4 is driven by the seeding structure 5 through a chain. The fertilizer position of each fertilizer structure 4 corresponds to the seeding position of one seeding structure 5 respectively. The fertilizer structure 4 adopts an outer-groove wheel type fertilizer distributor.

[0046] In operation, the seeding structure 5 transmits power to the fertilizer distributor in the fertilizer structure 4 through a chain, drives the fertilizer distributor to run, and the fertilizer distributor falls the fertilizer in the box into the ridge bottom through a fertilizer guide pipe, so as to avoid the volatilization and loss of the fertilizer.

[0047] The seeding structure 5 is located at the left side of the fertilizer structure 4 and is fixedly installed on the frame 1. The seeding structure 5 adopts an outer-groove wheel type seed distributor.

[0048] In operation, the pressing structure 6 transmits power to the seed distributor of the seeding structure 5 through a chain, drives the seed distributor to run, and the seed distributor falls the seed in the box into the ridge bottom through a hose. The planting of wheat needs to consider the water condition, and the ridge bottom has a lower terrain, so that the water can be better preserved, evaporation is reduced, and the seed germination and seedling growth are facilitated.

[0049] Please refer to Figure 5 , the pressing structure 6 is located at the leftmost end of the frame 1 and is fixedly installed on the frame 1. The seeding structure 5 is driven by the pressing structure 6 through a chain.

[0050] The pressing structure 6 is the last part of the application, and in operation, the motor in the pressing structure 6 drives one end of the chain to move around the gear through the gear, so that the chain transmits power to the seeding structure 5 at the other end of the chain. The wheel body of the pressing wheel adopts cast iron material, which has two effects. One is to compact the soil around the seed furrow, so as to ensure that the seed is in close contact with the soil to promote water absorption and germination. The other is to level the ridge surface, so as to provide convenience for subsequent field management (such as irrigation and pesticide spraying).

[0051] The rotary tillage structure 2, the spiral land leveler 3, the fertilizer structure 4, the seeding structure 5 and the pressing structure 6 are located on the frame 1 and are arranged in sequence from right to left. The seeding position of each seeding structure 5 corresponds to the ridge bottom position formed by the spiral land leveler 3 in operation and the fertilizer position of the fertilizer structure 4 respectively, so that the fertilizer structure 4 and the seeding structure 5 can guide the fertilizer and the seed into the ridge bottom.

[0052] In the application, the power of the rotary tillage structure 2 and the spiral soil leveler 3 is provided by the tractor. The tractor drives the input end of the gearbox in the rotary tillage structure 2 to rotate, thereby driving the rotary tillage structure 2 to operate. The rotary tillage structure 2 will completely crush the stubble of the previous crop and the soil clods, loosen the soil, improve the air permeability and water retention, and create a flat seedbed for subsequent fertilization and seeding. The gearbox of the rotary tillage structure 2 drives the gearbox of the spiral soil leveler 3 to operate through the chain when operating, thereby driving the spiral soil leveler 3 to operate. The spiral soil leveler 3 will gather the loose soil after rotary tillage to the middle, and the blades of the spiral soil leveler 3 are in reverse spiral to push the soil on both sides to the center, and continuously pile up during the process, forming a ridge body.

[0053] At the same time, the power of the fertilization structure 4, the seeding structure 5 and the pressing structure 6 is provided by the power motor in the pressing structure 6. The motor in the pressing structure 6 drives the pressing structure 6 itself to operate while transmitting power to the seeding structure 5 through the chain. Then the power is transmitted to the fertilization structure 4 through the chain by the seeding structure 5. Each fertilization position of the fertilization structure 4 corresponds to a ridge bottom position formed by the working of the spiral soil leveler 3, and the fertilization structure 4 can accurately drop the fertilizer into the ridge bottom to avoid loss of fertilizer evaporation. The seeding structure 5 drops the seeds into the ridge bottom, and since each seeding position of the seeding structure 5 corresponds to a ridge bottom position formed by the working of the spiral soil leveler 3, the seeds can be more accurately dropped into the position of the ridge bottom. The low ridge bottom terrain can better save water and reduce evaporation, which is beneficial to seed germination and seedling growth. Finally, the pressing structure 6 compacts the soil to ensure that the seeds are in close contact with the soil to promote water absorption and germination, and to flatten the ridge surface to facilitate subsequent field management (such as irrigation and pesticide spraying).

[0054] The rotary tillage structure 2 includes a rotary tillage shell 21, a connecting bracket 22, a first gearbox 23, a first transmission gear 24, a rotary tillage blade shaft 25, and a rotary tillage blade 26. The connecting bracket 22 is fixedly installed at the center position above the rotary tillage shell 21, and the first gearbox 23 is fixedly installed at the center position of the rotary tillage shell 21. The first gearbox 23 has three output ends, one of which is located above the first gearbox 23 and has a first transmission gear 24 fixedly installed at the end. The first transmission gear 24 is driven by the chain with the spiral soil leveler 3. The other two output ends of the first gearbox 23 are located below the first gearbox 23 on the same axis. One end of each of the two rotary tillage blade shafts 25 towards the center of the rotary tillage structure 2 is fixedly connected with an output end below the first gearbox 23. The other end of each of the two rotary tillage blade shafts 25 towards the two sides of the rotary tillage structure 2 is rotatably connected with the rotary tillage shell 21. A plurality of rotary tillage blades 26 are fixedly installed on the rotary tillage blade shaft 25, and the plurality of rotary tillage blades 26 are equally distributed on the rotary tillage blade shaft 25.

[0055] In work, the connecting support 22 provides a position for the rotary tillage structure 2 to be connected with the tractor, so that the tractor can drive the rotary tillage structure 2 to move when moving, and the whole structure can move along with the moving track of the tractor.

[0056] The first gearbox 23 is driven by the tractor to rotate the input end, so as to drive the three output ends to rotate simultaneously. The output end above the first gearbox 23 drives the first transmission gear 24 to rotate, the first transmission gear 24 drives the one end of the chain engaged with the first transmission gear 24 to rotate around the first transmission gear 24, and then the power is transmitted to the spiral land leveler 3 at the other end of the chain, so as to drive the spiral land leveler 3 to operate. The two output ends below the first gearbox 23 rotate to drive the rotary tillage shaft 25 to rotate in the rotary tillage shell 21, the rotary tillage shaft 25 rotates to drive the rotary tillage blade 26 to rotate around the rotary tillage shaft 25, so as to completely crush the stubble of the previous crop and the soil block, loosen the soil, improve the air permeability and water retention of the soil, and create a flat seedbed for subsequent fertilization and seeding.

[0057] Please refer to Figure 1 , the rotary tillage shell 21 is provided with an opening and closing plate 7, one side of the opening and closing plate 7 is hinged to the rotary tillage shell 21 by a hinge. When it is necessary to maintain or replace the rotary tillage shaft 25 and the rotary tillage blade 26, the opening and closing plate 21 can be opened on the rotary tillage shell 21 by the hinge, so as to facilitate the maintenance personnel to check and work.

[0058] Please refer to Figure 2 and Figure 6 The spiral land leveler 3 comprises a support frame 31, a second gearbox 32, a driven gear 33, a spiral knife shaft 34, and a spiral knife blade 35. Two lifting frames are fixedly installed on the machine frame 1, and the support frame 31 is fixedly installed below the lifting frame. The lifting frame is used to rotate the rotatable handle above the lifting frame to adjust the height of the support frame 31 to change the height of the spiral knife blade 35, which is a common technical means for those skilled in the art. The second gearbox 32 is fixedly installed at the center position of the support frame 31. The second gearbox 32 has two output ends, the input end of the second gearbox 32 is located above the second gearbox 32 and has a driven gear 33 fixedly installed at the distal end, and the driven gear 33 is driven by the rotary tillage structure 2 through a chain transmission. The two output ends of the second gearbox 32 are located below the two sides of the second gearbox 32 and are on the same axis. One end of each of the two spiral knife shafts 34 facing the center of the support frame 31 is fixedly connected with an output end below the second gearbox 32, and the other end of each of the two spiral knife shafts 34 facing the outer side direction is rotatably connected with the support frame 31. The spiral knife blade 35 is fixedly installed on the spiral knife shaft 34. The spiral knife blades 35 on the two spiral knife shafts 34 rotate in opposite directions, which are used to gather the loosened soil after rotary tillage to the middle.

[0059] In operation, the rotary tillage structure 2 transmits power to the driven gear 33 via the chain, drives the driven gear 33 to rotate, drives the input end of the second gearbox 32 to rotate, drives the two output ends below the second gearbox 32 to rotate, drives the helical shaft 34 on the support frame 31 to rotate, and drives the helical blades 35 on the two helical shafts 34 to rotate in opposite directions, thereby gathering the loosened soil after rotary tillage to the middle, and pushing the soil on both sides to the center and continuously piling up during the travel, forming a ridge.

[0060] The fertilizer application structure 4 includes a fertilizer box 41, a fertilizer applicator 42, a fertilizer discharge hose 43, a fertilizer positioning cylinder 44, and a second transmission gear 45. The fertilizer box 41 is fixedly installed on the frame 1. A plurality of fertilizer applicators 42 are installed below the fertilizer box 41 and are fixedly connected to the fertilizer box 41. Each fertilizer applicator 42 corresponds to a fertilizer discharge hose 43, and the one end of the fertilizer discharge hose 43 is connected to the fertilizer applicator 42. The fertilizer positioning cylinder 44 is fixedly installed on the frame 1, and the number of the fertilizer positioning cylinder 44 is consistent with the number of the fertilizer applicator 42. The position of the fertilizer positioning cylinder 44 is the fertilizer application position of the fertilizer application structure 4. The other end of each fertilizer discharge hose 43 is inserted into the fertilizer positioning cylinder 44. The second transmission gear 45 is fixedly installed at the end of the transmission shaft of the fertilizer applicator 42, and the second transmission gear 45 and the seeding structure 5 are driven by the chain.

[0061] In operation, the seeding structure 5 transmits power to the second transmission gear 45 via the chain, drives the fertilizer applicator 42 to operate, and drives the fertilizer applicator 42 to guide the fertilizer in the fertilizer box 41 to the soil via the fertilizer discharge hose 43. The fertilizer positioning cylinder 44 precisely positions the outlet of the fertilizer discharge hose 43 to the position of the ridge bottom, thereby avoiding the volatilization and loss of the fertilizer.

[0062] The seeding structure 5 comprises a seeding box 51, seeders 52, seeding hoses 53, seeding positioning cylinders 54, furrow openers 55, third transmission gears 56, adjusting mechanisms 57, the seeding box 51 is fixedly installed on the frame 1, a plurality of seeders 52 are installed below the seeding box 51, the plurality of seeders 52 are equidistantly distributed below the seeding box 51 and are fixedly connected with the seeding box 51. Each seeder 52 is connected with a seeding hose 53. The seeding positioning cylinders 54 are slidingly installed on the frame 1, the number of the seeding positioning cylinders 54 is consistent with the number of the seeders 52, and the positions of the seeding positioning cylinders 54 are the seeding positions of the seeding structure 5. The other ends of the seeding hoses 53 are inserted into the seeding positioning cylinders 54. One furrow opener 55 is fixedly installed below each seeding positioning cylinder 54. The transmission shafts of the seeders 52 are fixedly installed with two third transmission gears 56, one of which is driven by the fertilizer structure 4 through a chain, and the other of which is driven by the compacting structure 6 through a chain. The adjusting mechanisms 57 are installed below the seeding box 51 and are connected with the seeding positioning cylinders 54, and the adjusting mechanisms 57 are used for adjusting the heights of the seeding positioning cylinders 54.

[0063] Before work, the heights of the seeding positioning cylinders 54 can be adjusted according to the required seeding depth by using the adjusting mechanisms 57. When the heights of the seeding positioning cylinders 54 are adjusted, the heights of the furrow openers 55 are simultaneously changed, and the adjustment of the seeding depth is completed.

[0064] When working, the compacting structure 6 transmits power to the third transmission gears 56 through a chain. The third transmission gears 56 rotate to drive the seeders 52 to operate. The seeders 52 guide the seeds in the seeding box 51 into the seeding positioning cylinders 54 through the seeding hoses 53, and the furrow openers 55 on the seeding positioning cylinders 54 open seed furrows in the ridge bottom, so that the seeds fall into the seed furrows.

[0065] Please refer to Figure 7The adjusting mechanism 57 comprises a connecting shaft 571, a limiting mechanism 572, a first belt pulley 573, a second belt pulley 574, a linkage shaft 575, a cam 576, an adjusting frame 577, a guide slot 578, a clamping base 57a, a connecting plate 57b, and a clamping plate 57c. The connecting shaft 571 is rotatably installed on the side of the seeding structure 5 and extends out of the end of the seeding box 51 to be fixedly installed with the limiting mechanism 572. The limiting mechanism 572 is used to drive the connecting shaft 571 to rotate and limit the connecting shaft 571 when the rotation is stopped. The connecting shaft 571 is fixedly installed with the first belt pulley 573 on the inside of the seeding box 51 close to one side of the seeding box 51. The first belt pulley 573 is connected with the two second belt pulleys 574 through a belt. The two second belt pulleys 574 are at the same height of a horizontal line and are respectively fixedly installed on one linkage shaft 575. The two ends of each linkage shaft 575 are rotatably installed on the seeding box 51. Each linkage shaft 575 is fixedly installed with a cam 576 on each side. The adjusting frame 577 is provided with the guide slot 578, and the number and position of the guide slot 578 correspond to the number and position of the cam 576. The outer contour of the cam 576 is located in the guide slot 578 provided on the adjusting frame 577. All the seeding positioning cylinders 54 are fixedly installed on the adjusting frame 577.

[0066] When the seeding depth is adjusted, the limiting mechanism 572 drives the connecting shaft 571 to rotate, the connecting shaft 571 drives the first belt pulley 573 to rotate, the first belt pulley 573 transmits power to the second belt pulley 574 through the belt to drive the second belt pulley 574 to rotate, the second belt pulley 574 drives the linkage shaft 575 to rotate, the linkage shaft 575 drives the cam 576 to rotate, the outer contour of the cam 576 is located in the guide slot 578 provided on the adjusting frame 577, and the outer contour of the cam 576 remains in the guide slot when the cam 576 rotates, thereby driving the height of the adjusting frame 577 to change. The change in the height of the adjusting frame 577 drives the height of all the seeding positioning cylinders 54 connected with the adjusting frame 577 to change, and the limiting mechanism 572 limits the rotation of the connecting shaft 571 when the height reaches the requirement, thereby completing the positioning of the seeding depth.

[0067] Please refer to Figure 8 Each of the seeding positioning cylinders 54 is respectively welded with a clamping base 57a on each side of the frame 1. One end of the connecting plate 57b is rotatably installed on the clamping base 57a through a rotating shaft, and a torsional spring is sleeved on the rotating shaft. One end of the torsional spring is installed on the clamping base 57a, and the other end is installed on the connecting plate 57b. The clamping plate 57c is fixedly installed on the upper end of the connecting plate 57b. The lower surface of the clamping plate 57c is upwardly inclined from the position of the connecting plate 57b to the position of the seeding positioning cylinder 54.

[0068] When the cam 576 drives the seed positioning cylinder 54 to the highest position, it will make the seed positioning cylinder 54 move the two clamping plates 57c on both sides of the seed positioning cylinder 54 to the sides by lifting the slope at the bottom of the clamping plate 57c. At this time, the seed hose 53 can be inserted into the seed positioning cylinder 54. When the seed positioning cylinder 54 moves downward and is not in the highest position, the torsional spring drives the connecting plate 57b on the clamping base 57a to reset. The resetting of the connecting plate 57b drives the clamping plate 57c to reset and fix the seed hose 53, preventing the seed hose 57c from being separated from the seed positioning cylinder 54 due to vibration or other reasons during the operation of the invention, and maintaining the stability of the seeding work.

[0069] Please refer to Figure 9 and Figure 10 The limiting mechanism 572 includes an adjusting handle 5721, a limiting cap 5722, a reset tension spring 5723, and a clamping groove 5724. The adjusting handle 5721 is fixedly installed on the connecting shaft 571, the limiting cap 5722 is slidably installed on the adjusting handle 5721, and the adjusting handle 5721 has multiple protrusions to limit the sliding of the limiting cap 5722, so that the limiting cap 5722 rotates together with the adjusting handle 5721. The reset tension spring 5723 is located in the limiting cap 5722 and is sleeved on the adjusting handle 5721. One side of the adjusting handle 5721 towards the reset tension spring 5723 is provided with a rotatable plate, one end of the reset tension spring 5723 is fixedly installed on the seed box 51, and the other end of the reset tension spring 5723 is fixedly installed on the rotatable plate in the limiting cap 5722. Multiple clamping grooves 5724 are equally distributed in a ring shape around the connecting shaft 571 on the seed box 51. The limiting cap 5722 is inserted into the clamping groove 5724 on the side towards the seed box 51.

[0070] When the connecting shaft 571 is rotated, the limiting cap 5722 is first pulled out to the outside, so that the end of the limiting cap 5722 is not inserted into the clamping groove 5724. At this time, the adjusting handle 5721 on the connecting shaft 571 is manually rotated to drive the connecting shaft 571 to rotate and complete the adjustment of the seeding depth.

[0071] When the seeding depth is adjusted, the limiting cap 5722 is loosened, the reset tension spring 5723 drives the limiting cap 5722 to be reinserted into the clamping groove 5724 on the seed box 51, and the limiting of the rotation of the connecting shaft 571 is completed.

[0072] Please refer to Figure 11The compacting structure 6 comprises a bottom plate 61, a connecting shell 62, a compacting roller 63 and a connecting gear 64. Two bottom plates 61 are fixedly installed on the two sides of the left end of the frame 1. Each bottom plate 61 is fixedly installed with a lifting frame, and the side of each lifting frame is fixedly installed with a connecting shell 62. The lifting frame is used to rotate the handle above the lifting frame to adjust the height of the compacting roller 63, which is a common technical means for those skilled in the art. Two connecting shells 62 are rotatably installed at the two ends of the compacting roller 63. One of the connecting shells 62 is internally provided with a driving motor, and the output end of one side of the driving motor is fixedly installed on the compacting roller 63. The output end of the other side of the driving motor is fixedly installed with a connecting gear 64, and the connecting gear 64 is driven by the third gear through a chain.

[0073] In work, the driving motor in the connecting shell 62 drives the compacting roller 63 and the connecting gear 64 to rotate at the same time. The rotation of the connecting gear 64 drives one end of the chain engaged with the connecting gear 64 to rotate around the connecting gear 64, thereby transmitting power to the seeding structure 5 at the other end of the chain to drive the seeding structure 5 to operate. The rotation of the compacting roller 63 compacts the soil to ensure that the seeds are in close contact with the soil to promote water absorption and germination, and at the same time, the soil surface is leveled to facilitate subsequent field management (such as irrigation and pesticide spraying).

[0074] Through the personnel in the art, all electrical components in the case are connected to their adapted power supply through wires, and appropriate controllers should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should be completed according to the working principle of the electrical components, and the detailed connection means is a well-known technology in the art. The working principle and process are mainly introduced below, and the electrical control is not described.

[0075] In the first embodiment of the present application: before work, the connecting bracket 22 provides a position connected with the tractor for the rotary tillage structure 2, so that the tractor can drive the rotary tillage structure 2 to move at the same time when moving, thereby enabling the overall structure of the present application to move along with the moving track of the tractor.

[0076] Before work, the height of the seeding positioning cylinder 54 can also be adjusted according to the required seeding depth using the adjusting mechanism 57. The connecting shaft 571 is driven to rotate by the limiting mechanism 572, the first pulley 573 is driven to rotate by the rotation of the connecting shaft 571, the power is transmitted to the second pulley 574 through the belt to drive the second pulley 574 to rotate. The second pulley 574 drives the linkage shaft 575 to rotate when it rotates, and the linkage shaft 575 drives the cam 576 to rotate. The outer contour of the cam 576 is located in the guide groove 578 opened in the adjusting frame 577. When the cam 576 rotates, the outer contour of the cam 576 remains in the guide groove, driving the height of the adjusting frame 577 to change.

[0077] The height of the adjusting frame 577 is changed to drive the height of all the seeding positioning cylinders 54 connected with the adjusting frame 577 to be changed, and the limiting mechanism 572 limits the rotation of the connecting shaft 571 when the height reaches the requirement, thereby completing the positioning of the seeding depth.

[0078] Meanwhile, when the cam 576 drives the seeding positioning cylinder 54 to be in the highest position, the seeding positioning cylinder 54 can drive the two clamping plates 57c on both sides of the same seeding positioning cylinder 54 to move to both sides through the slope at the bottom of the clamping plate 57c. At this time, the seeding hose 53 can be inserted into the seeding positioning cylinder 54. When the seeding positioning cylinder 54 moves downward and is not in the highest position, the torsional spring drives the connecting plate 57b on the clamping base 57a to reset. The resetting of the connecting plate 57b drives the clamping plate 57c to reset and fix the seeding hose 53, so that the seeding hose 57c is prevented from being separated from the seeding positioning cylinder 54 due to vibration or other reasons in the working process of the present application, and the stability of the seeding work is maintained. The height adjustment of the seeding positioning cylinder 54 can drive the height of the furrow opener 55 to be changed at the same time, thereby completing the adjustment of the seeding depth.

[0079] In the present application, the power of the rotary tillage structure 2 and the spiral soil leveler 3 is provided by the tractor. During work, the tractor drives the input end of the first gearbox 23 in the rotary tillage structure 2 to rotate, thereby driving the three output ends to rotate at the same time. The output end above the first gearbox 23 drives the first transmission gear 24 to rotate, and the rotation of the first transmission gear 24 drives one end of the chain engaged with the first transmission gear 24 to rotate around the first transmission gear 24, thereby transmitting power to the other end of the chain at the second gearbox 32, and driving the spiral soil leveler 3 to operate.

[0080] The two output ends below the first gearbox 23 rotate to drive the rotary tillage blade shaft 25 to rotate in the rotary tillage shell 21, and the rotation of the rotary tillage blade shaft 25 drives the rotary tillage blade 26 to rotate around the rotary tillage blade shaft 25, thereby completing the work of completely crushing the previous crop residue and soil clumps and loosening the soil, creating a flat seedbed for subsequent fertilization and seeding.

[0081] The power transmitted to the driven gear 33 via the chain by the second gearbox 32 drives the two output ends below the second gearbox 32 to rotate. The rotation of the two output ends below the second gearbox 32 drives the spiral blade shaft 34 to rotate on the support frame 31. The rotation of the spiral blade shaft 34 drives the spiral blade 35 to rotate, and the rotation directions of the spiral blades 35 on the two spiral blade shafts 34 are simultaneously towards the middle position, thereby gathering the loosened soil after rotary tillage towards the middle, and the reverse spiral design pushes the soil on both sides towards the center and continuously piles up during the travel, forming a ridge.

[0082] In the present application, the power of the fertilizing structure 4, the seeding structure 5 and the compacting structure 6 is provided by the power motor in the compacting structure 6. The power motor in the connecting shell 62 drives the connecting gear 64 to rotate, which drives the seed dispenser 52 in the seeding structure 5 and the fertilizer dispenser 4 in the fertilizing structure 4 to operate through the transmission of the chain.

[0083] The fertilizer dispenser 42 guides the fertilizer in the fertilizing box 41 into the soil through the fertilizer discharge hose 43, and the fertilizer discharge positioning pipe 44 accurately positions the outlet position of the fertilizer discharge hose 43 to the position of the ridge bottom, avoiding the loss of fertilizer evaporation.

[0084] The seed dispenser 52 guides the seeds in the seeding box 51 into the seeding positioning cylinder 54 through the seeding hose 53, and the furrow opener 55 on the seeding positioning cylinder 54 opens a seed furrow in the ridge bottom, so that the seeds fall into the seed furrow.

[0085] Since each seeding position of the seeding structure 5 corresponds to the position of the ridge bottom formed by the operation of each spiral land leveler 3, the seeds can be more accurately dropped into the position of the ridge bottom. The ridge bottom has a lower terrain, which can better save water, reduce evaporation, and benefit seed germination and seedling growth.

[0086] Finally, the compacting roller 62 of the compacting structure 6 rotates to compact the soil, ensuring that the seeds are in close contact with the soil to promote water absorption and germination, and at the same time, the ridge surface is flattened, providing convenience for subsequent field management (such as irrigation and pesticide spraying).

[0087] Second embodiment

[0088] Please refer to Figure 12 In the second embodiment of the present application:

[0089] In the first embodiment, the adjustment of the seeding depth needs to be manually completed by the manual adjustment of the seeding depth. The second embodiment is different from the first embodiment in that the limiting mechanism 572 includes a servo motor 5725 and a protective shell 5726. The protective shell 5726 is fixedly installed on the outside of the seeding box 51, and the servo motor 5725 is fixedly installed in the protective shell 5726 and has an output end fixedly connected to the connecting shaft 571. When the connecting shaft 571 is rotated, the servo motor 5725 located in the protective shell 5726 is directly started to drive the connecting shaft 571. At this time, the connecting shaft 571 is rotated to complete the adjustment of the seeding depth, and the servo motor 5725 is a servo motor with an electromagnetic brake, which can automatically lock the output shaft after power failure, thereby limiting the rotation of the connecting shaft 571.

[0090] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions and do not necessarily require or imply any actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In other words, without further restriction, reference to elements will not, without more limitations, exclude additional, unrecited elements of a process, method, article, or apparatus.

[0091] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to these embodiments. Rather, it is the intention to cover any variations and modifications, provided they fall within the scope of the application as defined by the appended claims and their equivalents.

Claims

1. A wheat seeder, characterized in that, It includes a frame (1), a rotary tillage structure (2), a spiral leveler (3), a fertilization structure (4), a sowing structure (5), and a compaction structure (6); The rotary tillage structure (2) is installed on the frame (1) and is used to crush the stubble and soil clods of the previous crop and loosen the soil. The rotary tillage structure (2) and the spiral leveler (3) are driven by a chain. The spiral leveler (3) is installed on the frame (1) and is used to gather the loose soil after rotary tillage to the center to form a ridge. The fertilization structure (4) is installed on the frame (1) and is used to introduce fertilizer into the bottom of the ridge. The fertilization structure (4) and the sowing structure (5) are driven by a chain. The sowing structure (5) is installed on the frame (1) and is used to guide the seeds into the bottom of the ridge; The sowing structure (5) includes a sowing box (51), a seed metering device (52), a sowing hose (53), a sowing positioning cylinder (54), a furrow opener (55), a third transmission gear (56), and an adjustment mechanism (57). The sowing box (51) is fixedly installed on the frame (1). Multiple seed metering devices (52) are located below the sowing box (51), equidistantly distributed below the sowing box (51) and fixedly connected to it. Each seed metering device (52) is connected to a sowing hose (53). The sowing positioning cylinder (54) is slidably installed on the frame (1), and the number of sowing positioning cylinders (54) is the same as the number of seed metering devices (52). The position of the seeding positioning cylinder (54) is the seeding position of the seeding structure (5). The other end of the seeding hose (53) is inserted into the seeding positioning cylinder (54). A furrow opener (55) is fixedly installed below each seeding positioning cylinder (54). Two third transmission gears (56) are fixedly installed at the end of the drive shaft of the seed metering device (52). One of the third transmission gears (56) is connected to the fertilizer structure (4) by a chain, and the other third transmission gear (56) is connected to the pressing structure (6) by a chain. The adjustment mechanism (57) is installed below the seeding box (51) and connected to the seeding positioning cylinder (54). The adjustment mechanism (57) is used to adjust the height of the seeding positioning cylinder (54). The compaction structure (6) is installed on the frame (1) and is used to compact the soil around the seed furrow and level the ridge surface. The sowing structure (5) and the compaction structure (6) are driven by a chain. The rotary tillage structure (2), spiral leveler (3), fertilization structure (4), sowing structure (5) and compaction structure (6) are located on the frame (1) and arranged in sequence in the direction of travel during operation; The sowing position of each of the sowing structures (5) corresponds to the ridge bottom position formed by a spiral leveler (3) and the fertilization position of a fertilization structure (4) respectively; The adjustment mechanism (57) includes a connecting shaft (571), a limiting mechanism (572), a first pulley (573), a second pulley (574), a linkage shaft (575), a cam (576), an adjustment frame (577), a guide groove (578), a clamping base (57a), a connecting plate (57b), and a clamping plate (57c). The connecting shaft (571) is rotatably mounted on the side of the sowing structure (5) and the limiting mechanism (572) is fixedly mounted at the end extending out of the sowing box (51). The limiting mechanism (572) is used for... The connecting shaft (571) is rotated and its rotation is limited when it stops rotating. A first pulley (573) is fixedly installed on the connecting shaft (571) inside the seeding box (51) near the seeding box (51). The first pulley (573) is connected to two second pulleys (574) via belts. The two second pulleys (574) are at the same horizontal level. Each second pulley (574) is fixedly installed on a linkage shaft (575). Each linkage shaft... (575) Both ends are rotatably mounted on the seed box (51). Each of the linkage shafts (575) has a cam (576) fixedly mounted on both sides. The adjusting frame (577) has guide grooves (578). The number and position of the guide grooves (578) correspond to the number and position of the cams (576). The outer contour of the cam (576) is located in the guide groove (578) on the adjusting frame (577). All the seed positioning cylinders (54) are fixedly mounted on the adjusting frame (577). Each seed positioning cylinder (54) is fixedly mounted on the adjusting frame (577). A clamping base (57a) is welded to each side of the positioning cylinder (54) on the frame (1). One end of the connecting plate (57b) is rotatably mounted on the clamping base (57a) via a rotating shaft, and a torsion spring is mounted on the rotating shaft. One end of the torsion spring is mounted on the clamping base (57a), and the other end is mounted on the connecting plate (57b). A clamping plate (57c) is fixedly mounted on the upper end of the connecting plate (57b). The lower surface of the clamping plate (57c) is inclined upward from the position of the connecting plate (57b) toward the position of the seeding positioning cylinder (54).

2. The wheat seeder according to claim 1, characterized in that, The rotary tillage structure (2) includes a rotary tillage shell (21), a connecting bracket (22), a first gearbox (23), a first transmission gear (24), a rotary tillage shaft (25), and rotary tillage blades (26). The connecting bracket (22) is fixedly installed on the rotary tillage shell (21). The first gearbox (23) is fixedly installed on the rotary tillage shell (21). The first gearbox (23) has three output ends. One of the output ends of the first gearbox (23) is located above the first gearbox (23) and the first transmission gear (24) is fixedly installed at its end. The first transmission gear (24) interacts with the rotary tillage leveling mechanism. The device (3) is driven by a chain. The other two output ends of the first gearbox (23) are located on both sides below the first gearbox (23) and are on the same axis. The ends of the two rotary tillage blade shafts (25) facing the center of the rotary tillage structure (2) are respectively fixedly connected to the output end below the first gearbox (23). The ends of the two rotary tillage blade shafts (25) facing both sides of the rotary tillage structure (2) are respectively rotatably connected to the rotary tillage shell (21). Multiple rotary tillage blades (26) are fixedly installed on the rotary tillage blade shafts (25). The multiple rotary tillage blades (26) are equidistantly distributed on the rotary tillage blade shafts (25).

3. The wheat seeder according to claim 1, characterized in that, The spiral tillager (3) includes a support frame (31), a second gearbox (32), a driven gear (33), a spiral cutter shaft (34), and spiral blades (35). Two lifting frames are fixedly installed on the frame (1). The support frame (31) is fixedly installed below the lifting frames. The second gearbox (32) is fixedly installed on the support frame (31). The second gearbox (32) has two output ends. The input end of the second gearbox (32) is located above the second gearbox (32) and the driven gear (33) is fixedly installed at its end. The driven gear (33) is connected to the rotary tillage structure (2) via a chain. The transmission is a bar drive. The two output ends of the second gearbox (32) are located on both sides below the second gearbox (32) and are on the same axis. The ends of the two spiral cutter shafts (34) facing the center of the support frame (31) are respectively fixedly connected to the output end below one of the second gearboxes (32). The ends of the two spiral cutter shafts (34) facing outward are respectively rotatably connected to the support frame (31). The spiral blades (35) are fixedly installed on the spiral cutter shafts (34). The spiral blades (35) on the two spiral cutter shafts (34) rotate in opposite directions to gather the loose soil after rotary tillage towards the center.

4. The wheat seeder according to claim 1, characterized in that, The fertilization structure (4) includes a fertilization box (41), a fertilizer dispenser (42), a fertilizer dispensing hose (43), a fertilizer dispensing positioning cylinder (44), and a second transmission gear (45). The fertilization box (41) is fixedly installed on the frame (1). Multiple fertilizer dispensers (42) are located below the fertilization box (41). These dispensers (42) are equidistantly distributed below the fertilization box (41) and fixedly connected to it. Each fertilizer dispenser (42) corresponds to a fertilizer dispensing hose (43). The fertilizer dispensing hose (43)... The end is connected to the fertilizer applicator (42), and the fertilizer applicator positioning cylinder (44) is fixedly installed on the frame (1). The number of fertilizer applicator positioning cylinders (44) is the same as the number of fertilizer applicators (42), and the position of the fertilizer applicator positioning cylinder (44) is the fertilizer application position of the fertilizer application structure (4). The other end of each fertilizer applicator hose (43) is inserted into a fertilizer applicator positioning cylinder (44). The end of the drive shaft of the fertilizer applicator (42) is fixedly installed with a second drive gear (45). The second drive gear (45) is connected to the seeding structure (5) by a chain drive.

5. The wheat seeder according to claim 1, characterized in that, The limiting mechanism (572) includes an adjusting handle (5721), a limiting cap (5722), a reset spring (5723), and a slot (5724). The adjusting handle (5721) is fixedly installed on the connecting shaft (571). The limiting cap (5722) is slidably installed on the adjusting handle (5721) and rotates together with the adjusting handle (5721). The reset spring (5723) is located inside the limiting cap (5722) and is fitted onto the adjusting handle (5721). One end of the reset spring (5723) is installed on the seeding box (51), and the other end is installed on the limiting cap (5722). Multiple slots (5724) are equidistantly distributed in a ring around the connecting shaft (571). The limiting cap (5722) is inserted into the slot (5724) on the side facing the seeding box (51).

6. The wheat seeder according to claim 1, characterized in that, The limiting mechanism (572) includes a servo motor (5725) and a protective shell (5726). The protective shell (5726) is fixedly installed on the outside of the seed box (51). The servo motor (5725) is fixedly installed inside the protective shell (5726) and its output end is fixedly connected to the connecting shaft (571).

7. The wheat seeder according to claim 1, characterized in that, The pressing structure (6) includes a base plate (61), a connecting shell (62), a pressing roller (63), and a connecting gear (64). The two base plates (61) are fixedly installed on the frame (1). Each base plate (61) is fixedly installed with a lifting frame, and each lifting frame is fixedly installed with a connecting shell (62). The two connecting shells (62) are rotatably installed at both ends of the pressing roller (63). One of the connecting shells (62) is equipped with a drive motor, and the output end of one side of the drive motor is fixedly connected to the pressing roller (63). The output end of the other side of the drive motor is fixedly installed with a connecting gear (64). The connecting gear (64) is driven by a chain to the sowing structure (5).

8. The wheat seeder according to claim 2, characterized in that, The rotary tillage shell (21) is provided with a hinge plate (7), and one side of the hinge plate (7) is hinged to the rotary tillage shell (21) by a hinge.

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