Double-seedling-belt seeding machine

Abstract

The invention relates to the related technical field of seeding machines, in particular to a double-seedling-belt seeding machine which comprises a machine frame, a fertilization furrow opener, a fertilizer box, a fertilizer discharging mechanism, a seed box, a seed furrow opening disc and a seed discharging device, a land wheel is installed at the front side end of the machine frame, a press wheel is installed at the rear side end of the machine frame, and the fertilization furrow opener is installed on the machine frame; the fertilizing furrow opener is arranged on the rack and used for opening fertilizer furrows in soil, the fertilizer box is fixedly mounted on the rack, fertilizer is stored in the fertilizer box, and the fertilizer discharging mechanism is mounted at the lower side end of the fertilizer box and used for conveying the fertilizer in the fertilizer box into the fertilizer furrows; according to the double-seedling-belt seeding machine, the rack, the fertilizing furrow opener, the fertilizer box, the fertilizer discharging mechanism, the seed box, the seed furrow opening disc and the seed metering device are combined to form the double-seedling-belt seeding machine, so that furrow opening is performed through the fertilizing furrow opener, fertilization is performed through the fertilizer discharging mechanism, and seeding is performed through the seed furrow opening disc and the seed metering device synchronously, so that fertilization and seeding are performed synchronously; therefore, the overall working efficiency of the seeder is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to seed drills, and in particular to a double-seedling belt seed drill. Background Art

[0002] A seeder is a planting machine that sows crop seeds and is used for a certain type of crop. The existing Chinese patent document with the announcement number CN105612881B discloses a seed drill, which includes a rotary dial assembly, the rotary dial assembly including a rotary dial cavity, a non-enclosed cavity structure formed by a blocking plate and side baffles located on both sides of the blocking plate, for accommodating a rotary dial member; the rotary dial member is arranged in the rotary dial cavity, and uses its own rotation to dial out the seeds entering the rotary dial cavity through the seed inlet from the seed outlet, including a rotating body and a number of paddles evenly arranged on the circumference of the rotating body; the seed inlet is formed by the left and right side baffles and is arranged at the starting point of the rotary dial in the rotary dial cavity; the seed outlet is formed by the left and right side baffles and is arranged at the end of the rotary dial in the rotary dial cavity; the rotary dial starting point is set at a non-highest position of the rotary dial cavity and has a resistance torque when the seeds are dialed; the rotary dial end point is set at the time when the seeds begin to fall according to the unrestricted free dialing method; However, the sowing equipment in the above scheme cannot apply fertilizer synchronously, which leads to the need for additional fertilization later, thus affecting the overall sowing efficiency. In addition, it can only place one seed at a single sowing point, so when the seed cannot germinate normally, it will lead to the need for later replanting, which will cause the overall development cycle of the seedling to be out of sync, which will have a certain degree of impact on the subsequent cultivation process. For this reason, the present invention proposes a double-seedling belt seeder to solve the above problems. Summary of the Invention

[0003] The object of the present invention is to provide a double-seedling belt seeder to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a double-seedling belt seeder, comprising: A frame, wherein a ground wheel is installed at the front end of the frame and a pressure wheel is installed at the rear end of the frame; A fertilizer furrow opener is mounted on the frame and is used to open fertilizer furrows on the soil; A fertilizer box, wherein the fertilizer box is fixedly mounted on the frame and contains fertilizer; A fertilizer discharging mechanism is installed at the lower end of the fertilizer box and is used to deliver the fertilizer in the fertilizer box to the fertilizer ditch; A seed box, wherein the seed box is fixedly mounted on the frame and contains seeds; A seed furrowing disc is mounted on the frame and is used to open a seed furrow on the soil; The seed meter is fixedly mounted on the lower side of the seed box and is used to transport the seeds in the seed box into the seed furrow.

[0005] Preferably, the fertilizer furrow opened by the fertilizer furrow opener and the seed furrow opened by the seed furrow opener are staggered, the pressing wheel is used to fill the fertilizer furrow after fertilization and the seed furrow after sowing, and to press the soil at the fertilizer furrow and the seed furrow. A filter is provided in the material cavity of the fertilizer box, the filter holes of the filter are larger than the particle size of the fertilizer, and a box cover is installed at the box mouth of the fertilizer box.

[0006] Preferably, three fertilizer discharging mechanisms are arranged at equal intervals, and the fertilizer discharging mechanism includes a fertilizer bin and a feeding wheel. The fertilizer bin is fixedly mounted on the fertilizer box, and the feed port of the fertilizer bin is aligned with the discharge port of the fertilizer box. The lower side end of the fertilizer bin is provided with a discharge port, and adjacent fertilizer bins are reinforced and connected by a reinforcement rod. The feeding wheel is arranged in the inner cavity of the fertilizer bin, and a rotating shaft is rotatably mounted on the fertilizer bin, and the rotating shaft is driven by a servo motor on the frame. The feeding wheel is fixedly mounted on the rotating shaft, and a feeding trough is provided on the side wall of the feeding wheel, and the feeding trough is provided with a circle around the circumference of the feeding wheel. The fertilizer entering the feed port enters the feeding trough, and the fertilizer in the feeding trough is delivered to the position of the discharge port under the rotation of the feeding wheel.

[0007] Preferably, a connecting rod groove and a material baffle plate groove are fixedly installed on the side wall of the fertilizer bin, the connecting rod groove is a rectangular groove, a connecting rod is movably arranged in the connecting rod groove, a material baffle plate is fixedly installed on the connecting rod, and the material baffle plate is movably arranged in the material baffle plate groove, and when the material baffle plate moves with the connecting rod, the blocking area of ​​the feed trough by the material baffle plate changes.

[0008] The cam is fixedly mounted on the frame, and the inner wall of the cam is provided with a positioning groove, and the positioning grooves are arranged in a plurality of groups at equal intervals. One end of the connecting rod is fixedly mounted on the mounting shaft, and the mounting shaft is fixedly mounted on the mounting tube, and the mounting shaft is provided with a center hole, and a positioning piece groove is provided on the side wall of the center hole, and the positioning piece groove is symmetrically arranged in one group, and the cross-section of the positioning piece groove is convex, and a positioning piece is movably installed in the positioning piece groove, and the positioning piece cross-section is convex, and the outer side surface of the positioning piece is integrally formed with a positioning protrusion, and the positioning protrusion is matched with the positioning groove, and the center shaft is plugged into the center hole. When the center shaft is actually installed, the inner wall of the positioning piece is against the side wall of the center shaft, and at this time, the positioning protrusion is embedded in the positioning groove, and a scale is fixedly mounted on the fertilizer box, and a scale pointer is fixedly mounted on the connecting rod, and the scale pointer is arranged corresponding to the scale.

[0009] Preferably, a first slot, an annular slot and a second slot are provided on the inner side wall of the center hole, the first slot and the second slot are both connected to the annular slot, and a group of the first slot and the second slot are symmetrically provided, and a snap-fit ​​protrusion is integrally formed on the side wall of the center shaft, and the cross-sectional dimensions of the snap-fit ​​protrusion, the first slot and the second slot are consistent, and a support spring is fixedly connected to the inner end of the center shaft, and when the snap-fit ​​protrusion is inserted into the annular slot along the first slot and enters the second slot, the support spring is in a compressed state.

[0010] Preferably, the outer end of the central shaft is fixedly connected to a turning handle, and when the engaging protrusion is embedded in the second notch, the turning handle is aligned with the first notch, a magnet block is embedded in the positioning member, and the mounting shaft is cast from ferromagnetic material.

[0011] Preferably, an alignment groove is provided on the side wall of the center hole of the feeding wheel, a spring-loaded air-avoidance groove is provided on the side wall of the rotating shaft, and a positioning spring is integrally formed on the side wall of the air-avoidance groove. When the feeding wheel is fixedly mounted on the rotating shaft, the positioning spring is embedded in the alignment groove, and the length of the feeding wheel coincides with the inner cavity width of the fertilizer bin.

[0012] Preferably, the seed meter includes a seed meter body, a seed meter cover and a seeding tray. The seed meter body is fixed to the lower side end of the seed box, and the seed bin port of the seed meter body is aligned with the seed drop port on the seed box. The seed meter cover is fixedly installed on each side of the seed meter body. A rotating shaft is rotatably installed on the seed meter body, and the rotating shaft is driven by a driving structure. A group of seeding trays are symmetrically arranged, and the seeding trays are fixed on the rotating shafts, and feeding holes are evenly opened on the seeding trays.

[0013] Preferably, a baffle is fixedly connected to the inner side wall of the seeding device cover, a distance is left between the baffle and the seeding plate, and the distance between the baffle and the seeding plate is smaller than the particle size of the seeds, an adsorption chamber is formed on the seeding device cover, and the adsorption chamber is connected to the exhaust device through an exhaust pipe. When the exhaust device is running, the seeds in the seed bin are adsorbed into the feeding hole on the seeding plate, and when the feeding hole on the seeding plate rotates to separate from the baffle, the seeds in the feeding hole fall from the seeding device body and fall into the seed groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a double-seedling belt seeder composed of a frame, a fertilizer furrow opener, a fertilizer box, a fertilizer discharge mechanism, a seed box, a seed furrow disc and a seed meter, the fertilizer furrow opener is used to open the furrow, the fertilizer is then applied through the fertilizer discharge mechanism, and the seeds are sown through the seed furrow disc and the seed meter at the same time, thereby achieving simultaneous fertilization and sowing, thereby effectively improving the overall working efficiency of the seeder; 2. The fertilizer discharging mechanism is configured to be composed of a fertilizer bin and a feeding wheel, and a connecting rod groove and a baffle plate groove are provided on the side wall of the fertilizer bin. A connecting rod and a baffle plate are respectively provided in the connecting rod groove and the baffle plate groove, so that the position of the baffle plate can be adjusted by the connecting rod, and the shielding area of ​​the feeding chute can be adjusted by the baffle plate, thereby effectively controlling the amount of fertilizer applied to ensure the survival rate of the seeds; 3. By allowing the seed meter to simultaneously discharge a pair of seeds, the trouble of subsequent replanting due to a single seed not germinating can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a rear side view of the present invention; Figure 3 A top view of the present invention; Figure 4 It is a side view of the present invention; Figure 5 It is a lower side view of the fertilizer box of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure at center A; Figure 7 for Figure 5 A magnified schematic diagram of the structure at point B in the middle; Figure 8 This is a schematic diagram of the installation position of the filter screen of the present invention; Figure 9 for Figure 8 A magnified schematic diagram of the structure at point C in the middle; Figure 10 It is an upper side view of a fertilizer box of the present invention; Figure 11 for Figure 10 A magnified schematic diagram of the structure at D in the middle; Figure 12 for Figure 11 A magnified schematic diagram of the structure at E in the middle; Figure 13 This is a schematic diagram of the inner structure of the positioning member of the present invention; Figure 14 This is a schematic diagram of the outer structure of the positioning member of the present invention; Figure 15 This is a schematic diagram of the feeding wheel structure of the present invention; Figure 16 This is a schematic diagram of the central axis structure of the present invention; Figure 17 This is a schematic diagram of the connection between the fertilizer bin and the rotating shaft of the present invention; Figure 18 for Figure 17 A magnified schematic diagram of the structure at F in the middle; Figure 19 This is a schematic diagram of the connection between the baffle plate and the connecting rod of the present invention; Figure 20 for Figure 19 A magnified schematic diagram of the structure at G in the middle; Figure 21 Schematic diagram of the connecting rod structure of the present invention; Figure 22 for Figure 21 A magnified schematic diagram of the structure at H in the middle; Figure 23 for Figure 22 A magnified schematic diagram of the structure at J in the middle; Figure 24 This is a schematic diagram of the rotating shaft structure of the present invention; Figure 25 for Figure 24 A magnified schematic diagram of the structure at K in the middle; Figure 26 This is a structural schematic diagram of the seed metering device of the present invention; Figure 27 It is a half-section view of the seed metering device of the present invention; Figure 28 This is a lower side view of the seed metering device of the present invention; Figure 29 for Figure 28 A magnified schematic diagram of the structure at L in the middle; Figure 30 for Figure 29 Enlarged schematic diagram of the structure at M in the middle.

[0016] In the figure: frame 1, fertilizer opener 2, fertilizer box 3, fertilizer discharge mechanism 4, seed box 5, seed opener 6, seed meter 7, ground wheel 8, pressure wheel 9, box cover 10, filter 11, fertilizer bin 12, feed port 13, discharge port 14, reinforcement rod 15, rotating shaft 16, feed wheel 17, feed trough 18, connecting rod slot 19, baffle plate slot 20, connecting rod 21, baffle plate 22, mounting tube 23, mounting shaft 24, center hole 25, positioning piece slot 26, Positioning member 27, positioning protrusion 28, positioning groove 29, central axis 30, first notch 31, annular notch 32, second notch 33, engaging protrusion 34, support spring 35, turning handle 36, scale 37, scale pointer 38, alignment groove 39, spring clip avoidance groove 40, positioning spring clip 41, seed metering device body 42, seed metering device cover 43, seeding plate 44, feeding hole 45, baffle 46, rotating shaft 47, seed bin 48, magnet block 50. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 30 , the present invention provides the following three preferred embodiments: Embodiment 1: A double-seedling belt seeder includes a frame 1, a fertilizer furrow opener 2, a fertilizer box 3, a fertilizer discharge mechanism 4, a seed box 5, a seed furrow opener 6 and a seed meter 7. The front side end of the frame 1 is equipped with a ground wheel 8, and the rear side end of the frame 1 is equipped with a pressing wheel 9. The fertilizer furrow opener 2 is installed on the frame 1, and the fertilizer furrow opener 2 is used to open a fertilizer furrow on the soil. The fertilizer box 3 is fixedly installed on the frame 1, and the fertilizer box 3 stores fertilizer. The fertilizer discharge mechanism 4 is installed at the lower side end of the fertilizer box 3, and the fertilizer discharge mechanism 4 is used to deliver the fertilizer in the fertilizer box 3 to the fertilizer furrow. The seed box 5 is fixedly installed on the frame 1, and the seed box 5 stores seeds. The seed furrowing disc 6 is installed on the frame 1, and the seed furrowing disc 6 is used to open seed furrows on the soil. The seed meter 7 is fixedly installed on the lower side of the seed box 5, and the seed meter 7 is used to transport the seeds in the seed box 5 to the seed furrow. By setting up a double-seedling belt seeder composed of a frame 1, a fertilizer furrowing disc 2, a fertilizer box 3, a fertilizer discharge mechanism 4, a seed box 5, a seed furrowing disc 6 and a seed meter 7, the furrowing is opened by the fertilizer furrowing disc 2, and the fertilizer is applied by the fertilizer discharge mechanism 4, and the seeds are sown synchronously through the seed furrowing disc 6 and the seed meter 7, so that fertilization and sowing are carried out synchronously, thereby effectively improving the overall working efficiency of the seeder.

[0019] The fertilizer furrow opened by the fertilizing furrow opener 2 and the seed furrow opened by the seed furrow opening plate 6 are staggered. The pressing wheel 9 is used to fill the fertilizer furrow after fertilization and the seed furrow after sowing, and to press the soil at the fertilizer furrow and seed furrow positions. A filter screen 11 is provided in the material cavity of the fertilizer box 3. The filter holes of the filter screen 11 are larger than the particle size of the fertilizer. A box cover 10 is installed at the box mouth of the fertilizer box 3. The filter screen 11 can prevent caking fertilizer from entering the fertilizer box 3 and affecting the normal operation of the seeder.

[0020] Embodiment 2: On the basis of embodiment 1, three fertilizer discharging mechanisms 4 are arranged at equal intervals, and the fertilizer discharging mechanism 4 includes a fertilizer bin 12 and a feeding wheel 17. The fertilizer bin 12 is fixedly mounted on the fertilizer box 3, and the feed port 13 of the fertilizer bin 12 is aligned with the dropout port of the fertilizer box 3. The lower side end of the fertilizer bin 12 is provided with a discharge port 14, and adjacent fertilizer bins 12 are reinforced and connected by a reinforcement rod 15. The feeding wheel 17 is arranged in the inner cavity of the fertilizer bin 12, and a rotating shaft 16 is rotatably mounted on the fertilizer bin 12. The rotating shaft 16 is driven by a servo motor on the frame 1, and the feeding wheel 17 is fixedly mounted on the rotating shaft 16. A feeding trough 18 is provided on the side wall of the feeding wheel 17. The feeding trough 18 is arranged in a circle around the circumference of the feeding wheel 17. The fertilizer entering from the feed port 13 enters the feeding trough 18, and under the rotation action of the feeding wheel 17, the fertilizer in the feeding trough 18 is sent to the position of the discharge port 14.

[0021] A connecting rod groove 19 and a baffle plate groove 20 are fixedly installed on the side wall of the fertilizer bin 12. The connecting rod groove 19 is a rectangular groove, and a connecting rod 21 is movably provided in the connecting rod groove 19. A baffle plate 22 is fixedly installed on the connecting rod 21, and the baffle plate 22 is movably provided in the baffle plate groove 20. When the baffle plate 22 moves with the connecting rod 21, the baffle plate 22 changes the blocking area of ​​the feed chute 18. By configuring the fertilizer discharge mechanism 4 to be composed of a combination of the fertilizer bin 12 and the feed wheel 17, and providing a connecting rod groove 19 and a baffle plate groove 20 on the side wall of the fertilizer bin 12, and arranging a connecting rod 21 and a baffle plate 22 in the connecting rod groove 19 and the baffle plate groove 20 respectively, the position of the baffle plate 22 can be adjusted by the connecting rod 21, thereby adjusting the blocking area of ​​the feed chute 18 by the baffle plate 22, thereby effectively controlling the amount of fertilizer applied to ensure the survival rate of the seeds.

[0022] A mounting tube 23 is fixedly mounted on the fertilizer box 3, and a positioning groove 29 is provided on the inner side wall of the mounting tube 23. There are multiple groups of positioning grooves 29 at equal intervals. One end of the connecting rod 21 is fixedly mounted by a mounting shaft 24. The mounting shaft 24 is fixedly mounted on the mounting tube 23. A center hole 25 is provided on the mounting shaft 24. A positioning member groove 26 is provided on the side wall of the center hole 25. There is a group of positioning member grooves 26 symmetrically arranged, and the cross-section of the positioning member groove 26 is convex. A positioning member 27 is movably mounted in the positioning member groove 26. The cross-section of the positioning member 27 is convex. The outer side of the positioning member 27 is integrally formed with a positioning protrusion 28, and the positioning protrusion 28 matches the positioning groove 29. The center hole 25 is equipped with a center shaft 30 that is inserted into the center hole 25. When the center shaft 30 is actually installed, the inner wall of the positioning member 27 is against the side wall of the center shaft 30, and at this time, the positioning protrusion 28 is embedded in the positioning groove 29, which is convenient for positioning the position of the connecting rod 21 and ensuring the convenience of positioning the connecting rod 21. A scale ruler 37 is fixedly installed on the fertilizer box 3, and a scale pointer 38 is fixedly installed on the connecting rod 21. The scale pointer 38 is set corresponding to the scale ruler 37. The scale ruler 37 and the connecting rod 21 are fixedly installed with a scale pointer 38. The scale ruler 37 and the scale pointer 38 can facilitate the staff to determine the position of the baffle plate 22.

[0023] A first slot 31, an annular slot 32 and a second slot 33 are provided on the inner side wall of the center hole 25. The first slot 31 and the second slot 33 are connected to the annular slot 32. The first slot 31 and the second slot 33 are symmetrically arranged in a group. A snap-fit ​​protrusion 34 is integrally formed on the side wall of the center shaft 30. The cross-sectional dimensions of the snap-fit ​​protrusion 34, the first slot 31 and the second slot 33 are consistent. A support spring 35 is fixedly connected to the inner end of the center shaft 30. When the snap-fit ​​protrusion 34 is inserted into the annular slot 32 along the first slot 31 and enters the second slot 33, the support spring 35 is in a compressed state and is embedded in the second slot 33 through the snap-fit ​​protrusion 34, thereby facilitating the positioning of the center shaft 30 and preventing the center shaft 30 from falling off, thereby effectively ensuring the positioning stability of the connecting rod 21.

[0024] The outer end of the central shaft 30 is fixedly connected to a turning handle 36. When the engaging protrusion 34 is embedded in the second slot 33, the turning handle 36 is aligned with the first slot 31. A magnet block 50 is embedded in the positioning member 27. The mounting shaft 24 is cast from ferromagnetic material. The magnet block 50 can ensure that the positioning member 27 is connected to the positioning member slot 26.

[0025] Example three: On the basis of Example two, an alignment groove 39 is provided on the side wall of the center hole of the feeding wheel 17, and a spring-loaded air-avoiding groove 40 is provided on the side wall of the rotating shaft 16. A positioning spring 41 is integrally formed on the side wall of the air-avoiding groove 40. When the feeding wheel 17 is fixedly mounted on the rotating shaft 16, the positioning spring 41 is embedded in the alignment groove 39. The length value of the feeding wheel 17 is consistent with the inner cavity width value of the fertilizer bin 12, which facilitates the positioning of the feeding wheel 17 on the rotating shaft 16.

[0026] The seeding device 7 includes a seeding device body 42, a seeding device cover 43 and a seeding tray 44. The seeding device body 42 is fixed to the lower side end of the seed box 5, and the seed bin 48 port of the seeding device body 42 is aligned with the seed drop port on the seed box 5. A seeding device cover 43 is fixedly installed on each side of the seeding device body 42. A rotating shaft 47 is rotatably installed on the seeding device body 42, and the rotating shaft 47 is driven by a driving structure. A group of seeding trays 44 are symmetrically arranged, and the seeding trays 44 are fixed on the rotating shaft 47, and feeding holes 45 are evenly opened on the seeding trays 44.

[0027] A baffle 46 is fixedly connected to the inner wall of the seeding device cover 43, and a distance is left between the baffle 46 and the seeding tray 44, and the distance between the baffle 46 and the seeding tray 44 is smaller than the particle size of the seeds. An adsorption chamber is formed on the seeding device cover 43, and the adsorption chamber is connected to the exhaust device through an exhaust pipe. When the exhaust device is running, the seeds in the seed bin 48 are adsorbed into the feeding hole 45 on the seeding tray 44. When the feeding hole 45 on the seeding tray 44 rotates to separate from the baffle 46, the seeds in the feeding hole 45 fall from the seeding device body 42 and fall into the seed trench, so that a pair of seeds fall synchronously in the seed trench, thereby effectively avoiding the trouble of subsequent replanting due to the failure of a single seed to germinate.

[0028] Although the above describes the illustrative specific embodiments of the present application so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations based on the concept of the present application are protected.

Claims

1. A double seedling belt seeder, characterized by: include: A frame (1), wherein a ground wheel (8) is installed at the front end of the frame (1), and a pressure wheel (9) is installed at the rear end of the frame (1); A fertilizer furrow opener (2), the fertilizer furrow opener (2) being mounted on the frame (1) and used for opening fertilizer furrows on the soil; A fertilizer box (3), wherein the fertilizer box (3) is fixedly mounted on the frame (1), and fertilizer is stored in the fertilizer box (3); A fertilizer discharging mechanism (4), the fertilizer discharging mechanism (4) being installed at the lower side end of the fertilizer box (3), and the fertilizer discharging mechanism (4) being used to deliver the fertilizer in the fertilizer box (3) into the fertilizer ditch; A seed box (5), wherein the seed box (5) is fixedly mounted on the frame (1), and seeds are stored in the seed box (5); A seed furrowing disc (6), the seed furrowing disc (6) being mounted on the frame (1), and the seed furrowing disc (6) being used to open a seed furrow on the soil; A seed meter (7) is fixedly mounted on the lower side of the seed box (5), and is used to transport the seeds in the seed box (5) into the seed furrow.

2. A double seedling belt seeder according to claim 1, characterized in that: The fertilizer furrow opened by the fertilizer furrow opener (2) and the seed furrow opened by the seed furrow opening disc (6) are arranged in a staggered manner. The pressing wheel (9) is used to fill the fertilizer furrow after fertilization and the seed furrow after sowing, and to press the soil at the positions of the fertilizer furrow and the seed furrow. A filter screen (11) is provided in the material cavity of the fertilizer box (3). The filter holes of the filter screen (11) are larger than the particle size of the fertilizer. A box cover (10) is installed at the box opening position of the fertilizer box (3).

3. The double seedling belt seeder according to claim 1, characterized in that: The fertilizer discharging mechanism (4) is provided with three fertilizer bins (12) at equal intervals, and the fertilizer discharging mechanism (4) includes a fertilizer bin (12) and a feeding wheel (17). The fertilizer bin (12) is fixedly mounted on the fertilizer box (3), and the feeding port (13) of the fertilizer bin (12) is aligned with the feeding port of the fertilizer box (3). A discharging port (14) is provided at the lower side end of the fertilizer bin (12), and adjacent fertilizer bins (12) are reinforced and connected by a reinforcing rod (15). The feeding wheel (17) is arranged in the inner cavity of the fertilizer bin (12), and the fertilizer bin (12) is rotatably mounted on the feeding wheel (17). A rotating shaft (16) is provided, the rotating shaft (16) being driven by a servo motor on the frame (1), the feeding wheel (17) being fixedly mounted on the rotating shaft (16), the feeding trough (18) being provided on the side wall of the feeding wheel (17), the feeding trough (18) being provided with a circle around the circumference of the feeding wheel (17), the fertilizer entering through the feeding port (13) enters into the feeding trough (18), and the fertilizer in the feeding trough (18) is delivered to the position of the discharge port (14) under the rotation of the feeding wheel (17).

4. A double seedling belt seeder according to claim 3, characterized in that: A connecting rod groove (19) and a material blocking plate groove (20) are fixedly installed on the side wall of the fertilizer bin (12). The connecting rod groove (19) is a rectangular groove. A connecting rod (21) is movably arranged in the connecting rod groove (19). A material blocking plate (22) is fixedly installed on the connecting rod (21). The material blocking plate (22) is movably arranged in the material blocking plate groove (20). When the material blocking plate (22) moves with the connecting rod (21), the shielding area of ​​the feeding trough (18) formed by the material blocking plate (22) changes.

5. A double seedling belt seeder according to claim 4, characterized in that: The fertilizer box (3) is fixedly mounted with a mounting tube (23), and a positioning groove (29) is provided on the inner side wall of the mounting tube (23). The positioning grooves (29) are arranged in multiple groups at equal intervals. One end of the connecting rod (21) is fixedly mounted by a mounting shaft (24), and the mounting shaft (24) is fixedly mounted on the mounting tube (23). A center hole (25) is provided on the mounting shaft (24), and a positioning member groove (26) is provided on the side wall of the center hole (25). The positioning member grooves (26) are symmetrically arranged in one group, and the cross section of the positioning member grooves (26) is convex. A positioning member (27) is movably installed in the positioning member groove (26). The positioning member ( 27) has a convex cross-section, and a positioning protrusion (28) is integrally formed on the outer side surface of the positioning member (27), and the positioning protrusion (28) is matched with the positioning groove (29). A central shaft (30) is inserted and installed in the central hole (25). When the central shaft (30) is actually installed, the inner side wall of the positioning member (27) and the side wall of the central shaft (30) are against each other, and at this time, the positioning protrusion (28) is embedded in the positioning groove (29). A scale (37) is fixedly installed on the fertilizer box (3), and a scale pointer (38) is fixedly installed on the connecting rod (21). The scale pointer (38) is set corresponding to the scale (37).

6. A double seedling belt seeder according to claim 5, characterized in that: A first notch (31), an annular notch (32) and a second notch (33) are provided on the inner side wall of the center hole (25). The first notch (31) and the second notch (33) are both arranged in communication with the annular notch (32). The first notch (31) and the second notch (33) are symmetrically arranged in a group. A snap-fit ​​protrusion (34) is integrally formed on the side wall of the center shaft (30). The cross-sectional dimensions of the snap-fit ​​protrusion (34), the first notch (31) and the second notch (33) are consistent. A support spring (35) is fixedly connected to the inner side end of the center shaft (30). When the snap-fit ​​protrusion (34) is inserted into the annular notch (32) along the first notch (31) and enters the second notch (33), the support spring (35) is in a compressed state.

7. The double seedling belt seeder according to claim 6, characterized in that: The outer end of the central shaft (30) is fixedly connected to a rotating handle (36). When the engaging protrusion (34) is embedded in the second notch (33), the rotating handle (36) is aligned with the first notch (31). A magnet block (50) is embedded in the positioning member (27). The mounting shaft (24) is cast from a ferromagnetic material.

8. The double seedling belt seeder according to claim 3, characterized in that: A positioning groove (39) is provided on the side wall of the center hole of the feeding wheel (17), and a spring-loaded air-avoiding groove (40) is provided on the side wall of the rotating shaft (16). A positioning spring (41) is integrally formed on the side wall of the air-avoiding groove (40). When the feeding wheel (17) is fixedly mounted on the rotating shaft (16), the positioning spring (41) is embedded in the positioning groove (39), and the length of the feeding wheel (17) is consistent with the width of the inner cavity of the fertilizer bin (12).

9. The double seedling belt seeder according to claim 1, characterized in that: The seeding device (7) includes a seeding device body (42), a seeding device cover (43) and a seeding disc (44). The seeding device body (42) is fixed to the lower side end of the seed box (5), and the seed bin (48) port of the seeding device body (42) is aligned with the seed drop port on the seed box (5). The seeding device cover (43) is fixedly installed on both sides of the seeding device body (42). A rotating shaft (47) is rotatably installed on the seeding device body (42), and the rotating shaft (47) is driven by a driving structure. A group of seeding discs (44) are symmetrically arranged, and the seeding discs (44) are fixed on the rotating shaft (47). Feeding holes (45) are evenly opened on the seeding discs (44).

10. The double seedling belt seeder according to claim 9, characterized in that: A baffle (46) is fixedly connected to the inner side wall of the seeding device cover (43), and a distance is left between the baffle (46) and the seeding disk (44), and the distance between the baffle (46) and the seeding disk (44) is smaller than the particle size of the seeds. An adsorption chamber is formed on the seeding device cover (43), and the adsorption chamber is connected to the exhaust device through an exhaust pipe. When the exhaust device is in operation, the seeds in the seed bin (48) are adsorbed into the feeding hole (45) on the seeding disk (44). When the feeding hole (45) on the seeding disk (44) rotates to separate from the baffle (46), the seeds in the feeding hole (45) fall from the seeding device body (42) and fall into the seed furrow.

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