Duckbilled dibbler, seeding single body and complete machine

Abstract

The invention discloses a duckbilled dibbler, which comprises a supporting seat, a first duckbilled main body, a second duckbilled main body, a first needle tube assembly and a second needle tube assembly, and the supporting seat is respectively hinged with the first duckbilled main body and the second duckbilled main body; at least one first needle tube assembly is arranged in the first duckbilled main body, at least one second needle tube assembly is arranged in the second duckbilled main body, and the first needle tube assembly and the second needle tube assembly form an annular fertilization channel; during fertilization, the needle head extends out of the needle hole and is inserted into soil for liquid fertilizer fertilization, and the fertilizer can reach the root system part of the seed more easily. The invention further discloses a seeding complete machine, a part of vibration can be balanced through the upper crank flywheel and the lower crank flywheel of the complete machine, the balance of the machine body can be adjusted in an auxiliary manner, the seeding and fertilizing operation is more stable, the power consumption of the seeding machine is reduced, and the seeding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a duckbill type seed drill, a seeding unit and a complete machine. Background Art

[0002] When the existing duckbill type hole seeder is used for single fertilization, the liquid fertilizer pipe is fixed on the inner wall of the duckbill type hole seeder, and the liquid fertilizer is sprayed out through the nozzle. Figure 1 As shown, this will at least cause the following problems:

[0003] 1. Since the nozzle is fixed in the hole of the seed drill, the fertilizer can only be sprayed on the surface of the soil and cannot reach the root system of the seeds.

[0004] 2. Due to the complex environment of uneven soil, raised clods of soil can easily block the fertilizer sprayed from the nozzle, causing the fertilizer to fail to reach the intended location.

[0005] 3. The commonly used single liquid fertilizer tube limits the fertilization range and cannot fully fertilize the area around the seeds.

[0006] 4. Since the nozzle is fixed on the outer edge of the hole of the duckbill seed drill, the nozzle is easily blocked due to multiple contacts with moist soil during operation.

[0007] At the same time, when using a duckbill hole seeder to sow and fertilize tuber seeds, due to their spherical characteristics and irregular shape, the seeds fall to the ground at a high speed and are prone to bouncing, causing them to deviate from the predetermined sowing position, making it difficult to control the plant spacing and sowing depth.

[0008] Moreover, when applying fertilizer in hilly and mountainous areas, complex terrain, or uneven ground, the seeder vibrates greatly during sowing, resulting in unstable sowing and fertilization. The power consumption of the seeder increases due to the constant adjustment of the balance of the sowing unit, and the sowing efficiency is low.

[0009] In summary, the existing duckbill seeder cannot adapt to the sowing and fertilization requirements in hilly areas, resulting in poor sowing quality and poor fertilization effect, affecting yield. Summary of the invention

[0010] To this end, the present invention proposes a duckbill type seed drill to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0011] In order to achieve the above-mentioned object, the present invention provides a duckbill type hole seeder, comprising a support base, a first duckbill body and a second duckbill body, the support base is hinged to the first duckbill body and the second duckbill body respectively, and further comprises a first needle tube assembly and a second needle tube assembly; at least one first needle tube assembly is arranged in the first duckbill body, at least one second needle tube assembly is arranged in the second duckbill body, and the first needle tube assembly and the second needle tube assembly form an annular fertilization channel; the first needle tube assembly comprises:

[0012] An inner tube, an outer hard tube and a needle, the outer hard tube is sleeved on the outer side of the inner tube, one end of the inner tube is connected with the fertilizer delivery tube, the other end of the inner tube is connected with the needle, and one end of the outer hard tube away from the fertilizer delivery tube is fixedly connected with the needle; a pinhole is arranged at the bottom end of the first duckbill body, the pinhole is opposite to the needle, and when fertilizing, the outer hard tube can drive the needle to extend out of the pinhole to fertilize.

[0013] Preferably, the first needle tube assembly also includes a first annular frame, a connecting ring and a half ring, the end of the outer hard tube close to the fertilizer delivery tube is connected to the connecting ring, the end of the outer hard tube away from the fertilizer delivery tube is slidably connected to the half ring, the half ring is fixed on the inner wall of the first duckbill body, and the connecting ring is rotatably connected to the first annular frame.

[0014] Preferably, the first needle tube assembly further comprises a spring, which is sleeved on the outside of the outer hard tube, one end of the spring abuts against the connecting ring, and the other end of the spring abuts against the half ring.

[0015] Preferably, the first needle tube assembly also includes a fixing ring, a needle tube groove is opened on the inner wall of the first duckbill body, the fixing ring is fixed at one end of the needle tube groove, the inner tube passes through the fixing ring and can slide relative to the fixing ring, the spring is embedded in the needle tube groove, and the depth of the needle tube groove is less than the diameter of the spring.

[0016] Preferably, a first support plate is horizontally extended outward from the top of the first duckbill body, a second support plate is horizontally extended outward from the top of the second duckbill body, and the first needle tube assembly further includes a first pressing assembly, which includes:

[0017] A first buckle, a second buckle, a first push wire, a first slide rail and a first slider, the first buckle is fixed on the first support plate, the second buckle is fixed on the second support plate, the first slider cooperates with the first slide rail, the first slide rail is vertically arranged on the side of the first support plate close to the first duckbill body, one end of the first push wire is fixed on the second buckle, the other end of the first push wire passes through the first buckle and the bottom end of the first slide rail in turn, and is connected to the bottom of the first slider, and the side of the first slider away from the first slide rail is rotatably connected to the first annular frame.

[0018] Preferably, it also includes a circular tube and a connecting tube, the first needle tube assembly also includes an annular tube, the annular tube is arranged above the first annular frame, the circular tube is arranged above the annular tube, the circular tube is connected to the annular tube through the connecting tube, the annular tube is connected to one end of the inner tube through the fertilizer delivery tube, and the fertilizer delivery tube is a telescopic fertilizer delivery tube.

[0019] Preferably, the support seat is U-shaped, and the first side plate and the second side plate extend upward from both sides of the first support plate, the first side plate is opposite to the second side plate, and the support seat is inserted between the first side plate and the second side plate, and also includes an opening and closing component, which includes:

[0020] A first rotating axis, a second rotating axis, a first fixing member, a second fixing member and a tension spring, the support seat is hinged to the first duckbill body through the first rotating axis, the support seat is hinged to the second duckbill body through the second rotating axis, the first fixing member is fixed to the first side panel, the second fixing member is fixed to the side of the support seat close to the first side panel, one end of the tension spring is connected to one end of the first rotating axis close to the second side panel, the other end of the tension spring is connected to one end of the second rotating axis close to the second side panel, the vertical height of the first fixing member and the vertical height of the second fixing member are higher than the first rotating axis.

[0021] The present invention also discloses a sowing unit, including the duckbill type seed drill, a frame and a transmission assembly, the transmission assembly is connected to the duckbill type seed drill, and the transmission assembly includes:

[0022] A power input shaft, a crank flywheel shaft, an upper crank flywheel, a lower crank flywheel, a connecting rod and a sowing rocker arm; the power input shaft is arranged at the bottom end of the frame, the crank flywheel shaft is arranged at the top end of the frame, the power input shaft and the crank flywheel shaft are connected through a gear rack transmission, one end of the power input shaft is connected to one end of the lower crank flywheel, the other end of the lower crank flywheel is hinged to one end of the sowing rocker arm, the other end of the sowing rocker arm is connected to a supporting seat, one end of the upper crank flywheel is connected to the crank flywheel shaft, the other end of the upper crank flywheel is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the sowing rocker arm.

[0023] Preferably, it also includes a pull-wire rocker arm, a pull wire, and a seed throwing bucket. The pull-wire rocker arm is arranged at the top of the frame, a cam is arranged at the other end of the upper crank flywheel shaft, the cam cooperates with the pull-wire rocker arm, one end of the pull-wire rocker arm is connected to the pull wire, and the other end of the pull wire passes through the second fixing piece and is connected to the first fixing piece. The seed throwing bucket is arranged on the support seat, and the seed throwing outlet end is opposite to the annular fertilization channel.

[0024] The present invention also discloses a seeding machine, comprising at least two seeding units as described above arranged side by side, a liquid fertilizer barrel and a liquid infusion main pipe, wherein every two adjacent seeding units are connected to one end of a liquid infusion main pipe, and the other end of the liquid infusion main pipe is connected to the liquid fertilizer barrel.

[0025] The advantages and beneficial effects of the duckbill type seed drill of the present invention are as follows:

[0026] 1. When applying fertilizer, the needle extends from the needle hole and penetrates into the soil for fertilization, so that the fertilizer can reach the root of the seed more easily. After the fertilization is completed, the needle retracts from the needle hole into the duckbill body to prevent the soil from blocking the needle hole. The seeds collide or rub against multiple external hard tubes in the annular fertilization channel, which can reduce the falling speed of the seeds, making it less likely for the seeds to bounce when they reach the predetermined position on the ground, and expand the fertilization range.

[0027] 2. The upper crank flywheel and the lower crank flywheel of the whole machine can balance part of the vibration, assist in adjusting the balance of the machine body, make the sowing and fertilization operation more stable, reduce the power consumption of the seeder, and improve the sowing quality.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 It is a duckbill type hole seeder in the prior art.

[0031] Figure 2 It is a schematic diagram of the structure of the duckbill type hole seeder according to the present invention.

[0032] Figure 3 It is a front view of the duckbill type hole seeder according to the present invention.

[0033] Figure 4 It is a schematic diagram of the matching structure between the first needle tube assembly and the circular tube of the duckbill type seed drill according to the present invention.

[0034] Figure 5 This is an exploded view of the cooperation between the first needle tube assembly and the second needle tube assembly.

[0035] Figure 6 It is a schematic diagram of the cooperation structure between the first needle tube assembly and the first duckbill body of the duckbill type seeding device according to the present invention.

[0036] Figure 7 It is a schematic diagram of the first duckbill main body structure of the duckbill type hole seeder according to the present invention.

[0037] Figure 8 It is a schematic structural diagram of the first needle tube assembly of the duckbill type seeding device according to the present invention.

[0038] Fig. 9 It is a schematic diagram of the cooperation structure between the first pressing assembly and the first annular frame of the duckbill type hole seeder according to the present invention.

[0039] Fig.10 It is a structural schematic diagram of a seed drill according to the present invention.

[0040] Fig.11 FIG. 2 is another schematic diagram of the structure of the seed drill according to the present invention.

[0041] Fig.12 It is a front view of a seed drill according to the present invention.

[0042] Among them: 1-support seat; 2-first duckbill body; 3-second duckbill body; 4-inner tube; 5-outer hard tube; 6-needle head; 7-needle hole; 8-first annular frame; 9-blocking block; 10-connecting ring; 11-half ring; 12-spring; 13-needle tube groove; 14-fixing ring; 15-first support plate; 16-first pressing component; 17-first buckle; 18-second buckle; 19-first pressing wire; 20-first slider ring; 21-first slide rail; 22-first slider; 23-second pressing component; 24-round tube; 25 -connecting pipe; 26-first side plate; 27-second side plate; 28-first rotating shaft; 29-second rotating shaft; 30-first fixing member; 31-second fixing member; 32-tension spring; 33-frame; 34-power input shaft; 35-crank flywheel shaft; 36-upper crank flywheel; 37-lower crank flywheel; 38-connecting rod; 39-seeding rocker arm; 40-pull wire rocker arm; 41-pull wire; 42-seeding bucket; 43-liquid fertilizer barrel; 44-infusion main pipe; 45-telescopic fertilizer delivery pipe, 46-first needle tube assembly; 47-second needle tube assembly. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] like Figures 2 to 9 As shown, a duckbill type seed drill according to an embodiment of the present invention comprises a support base 1, a first duckbill body 2 and a second duckbill body 3, wherein the support base 1 is hinged to the first duckbill body 2 and the second duckbill body 3 respectively, and further comprises a first needle tube assembly 46 and a second needle tube assembly 47; at least one first needle tube assembly 46 is arranged in the first duckbill body 2, and at least one second needle tube assembly is arranged in the second duckbill body 3, and the first needle tube assembly 46 and the second needle tube assembly 47 form an annular fertilization channel; the first needle tube assembly 46 comprises:

[0045] An inner tube 4, an outer hard tube 5 and a needle 6, the outer hard tube 5 is sleeved on the outside of the inner tube 4, one end of the inner tube 4 is connected to the fertilizer delivery tube, the other end of the inner tube 4 is connected to the needle 6, and the end of the outer hard tube 5 away from the fertilizer delivery tube is fixedly connected to the needle 6; a pinhole 7 is arranged at the bottom end of the first duckbill body 2, the pinhole 7 is opposite to the needle 6, when fertilizing, the outer hard tube 5 can drive the needle 6 to extend out of the pinhole 7 for fertilizing.

[0046] As a preferred embodiment, there are three outer hard tubes, which are arranged in a ring around the inner wall of the first duckbill body 2. When the first duckbill body 2 and the second duckbill body 3 are closed or opened, the annular fertilization channel composed of the first needle tube assembly 46 and the second needle tube assembly 47 can carry out comprehensive fertilization around the seeds, with a large fertilization range.

[0047] Optionally, the outer surface of the outer hard tube 5 is a rough surface.

[0048] The inner tube 4 is a hose, which is used to connect the liquid fertilizer barrel 43 to transport fertilizer, and transport the fertilizer to the needle 6 for fertilization. The outer hard tube 5 is a tube made of hard material, and the inner tube 4 and the outer hard tube 5 are circular tubes 24. The outer hard tube 5 is sleeved on the outside of the inner tube 4, and the diameter of the outer hard tube 5 is larger than the diameter of the inner tube 4. On the one hand, it is used to protect the inner tube 4. The outer hard tube 5 is fixedly connected to the needle 6 to provide support for the needle 6 to penetrate into the soil. The needle 6 penetrates into the soil, which is convenient for positioning and accurate fertilization, and the fertilization is deeper, saving fertilizer. On the other hand, when the falling seeds collide with the outer hard tube 5, it can reduce the falling speed of the seeds, reduce the contact speed of the seeds with the ground, avoid the seeds from bouncing when landing, improve the friction of the seeds, reduce the rate of repeated seeding and missed seeding, and make the spacing between plants uniform.

[0049] After the needle 6 is inserted into the soil to apply fertilizer, the outer hard tube 5 drives the needle 6 to retract from the needle hole 7 into the inner wall of the first duckbill body 2. The inner wall of the first duckbill body 2 protects the needle 6 and prevents the soil from clogging the needle 6.

[0050] The first duckbill body 2 and the second duckbill body 3 can rotate around the hinge point on the support seat 1, and the first duckbill body 2 and the second duckbill body 3 support each other, and the two duckbill bodies open and close. When the duckbill is not working, the two duckbill bodies are closed together. When sowing is required, the first duckbill body 2 and the second duckbill body 3 are inserted into the soil and opened.

[0051] The plurality of first needle tube assemblies and the plurality of second needle tubes form an annular fertilization channel, and may also form a fertilization channel of other shapes.

[0052] Furthermore, the first needle tube assembly 46 also includes a first annular frame 8, a connecting ring 10 and a half ring 11. The end of the outer hard tube 5 close to the fertilizer delivery tube is connected to the connecting ring 10, and the end of the outer hard tube 5 away from the fertilizer delivery tube is slidingly connected to the half ring 11. The half ring 11 is fixed on the inner wall of the first duckbill body 2, and the connecting ring 10 is rotatably connected to the first annular frame 8.

[0053] As a preferred embodiment, multiple outer hard tubes 5 are arranged on the first annular frame 8. In a preferred embodiment, three outer hard tubes 5 are arranged on the first annular frame 8. The first annular frame 8 is semicircular. The first annular frame 8 passes through a connecting ring 10. The rotational connection is specifically that the connecting ring 10 can rotate around the first annular frame, the connecting ring 10 is fixedly connected to the side wall of one end of the outer hard tube 5, the inner tube 4 passes through the connecting ring 10 and can slide in the connecting ring 10, the outer hard tube 5 is fixedly connected to the connecting ring 10, the outer side wall of the connecting ring 10 away from the first annular frame 9 is slidably connected to the inner side wall of the first duckbill body 2, and the connecting ring 10 can slide up and down on the inner side wall of the first duckbill body 2.

[0054] The first annular frame 8 is double-layered, and includes a first annular frame upper portion and a first annular frame lower portion, wherein the first annular frame upper portion is arranged above the first annular frame lower portion, and a plurality of support columns are arranged between the first annular frame upper portion and the first annular frame lower portion. The first pressing assembly is connected to the upper portion of the first annular frame, and the connecting ring is connected to the lower portion of the first annular frame.

[0055] The outer hard tube 5 passes through the semi-ring 11 and is connected with the needle 6. The semi-ring 11 can limit the horizontal movement of the outer hard tube 5, so that the end of the outer hard tube 5 close to the needle tube can rotate synchronously with the first duckbill body 2. When the first duckbill body 2 rotates, the outer hard tube 5 drives the needle 6 and the inner tube 4 to rotate synchronously with the first duckbill body 2. The outer hard tube 5 rotates around the first annular frame 8. The semi-ring 11 connects the outer hard tube 5 with the inner wall of the duckbill body. The duckbill body drives the outer hard tube 5 to rotate synchronously, so that the needle 6 can always be opposite to the pinhole 7. When it is necessary to extend the needle 6 into the pinhole 7 for fertilization, it is only necessary to push the outer hard tube 5 downward through the first annular frame 8 to make the needle 6 extend out of the pinhole 7. The first annular frame 8 is connected to the first pressing assembly.

[0056] Specifically, the angle of the notch of the semi-ring 11 is less than ninety degrees, so that the outer hard tube 5 can be clamped in the semi-ring 11 to limit the position in the horizontal direction.

[0057] Specifically, the first needle tube assembly 46 further includes a spring 12 , which is sleeved on the outside of the outer hard tube 5 , one end of the spring 12 abuts against the connecting ring 10 , and the other end of the spring 12 abuts against the half ring 11 .

[0058] The outer hard tube 5 can slide relative to the half ring 11 along the axial direction of the outer hard tube 5. The spring 12 is arranged between the connecting ring 10 and the half ring 11. The half ring 11 is fixedly connected to the inner wall of the first duckbill body 2. The connecting ring 10 can drive the outer hard tube 5 to slide along the inner wall of the first duckbill body 2. When the outer hard tube 5 drives the needle 6 to penetrate into the soil, the connecting ring 10 moves down with the outer hard tube 5 to compress the spring 12. After fertilization is completed, the first pressing assembly removes the pressing force on the first annular frame, and the spring 12 rebounds to rebound the outer hard tube 5 and the first annular frame to the inner wall of the first duckbill body 2. At the same time, the spring 12 has another function, that is, to increase the friction with the surface of the falling seeds, which can more effectively reduce the falling speed of the seeds.

[0059] The length of the outer hard tube 5 is smaller than the length of the duckbill body.

[0060] Optionally, the first needle tube assembly 46 also includes a fixing ring 14, a needle tube groove 13 is opened on the inner wall of the first duckbill body 2, the fixing ring 14 is fixed at one end of the needle tube groove 13, the inner tube 4 passes through the fixing ring 14 and can slide relative to the fixing ring 14, the spring 12 is embedded in the needle tube groove 13, and the depth of the needle tube groove 13 is less than the diameter of the spring 12.

[0061] The outer wall of the connecting ring 10 is embedded in the needle tube groove 13 and can slide in the needle tube groove 13. The needle tube groove 13 is a semicircular groove. The diameter of the needle tube groove 13 is larger than the diameter of the spring 12. The spring 12 can be freely compressed or rebounded in the needle tube groove 13. The needle tube groove 13 plays a guiding role, so that the outer hard tube 5 can slide along the needle tube groove 13. The outer wall of the half tube is fixed in the needle tube groove 13. The fixing ring 14 is fixed in the needle tube groove 13, which plays a role of fixing the inner tube in the horizontal direction. The height of the fixing ring 14 is higher than the height of the connecting ring 10.

[0062] Specifically, Figure 7 As shown, the top of the first duckbill body 2 horizontally extends outward to form a first support plate 15, and the top of the second duckbill body 3 horizontally extends outward to form a second support plate 16. The first needle tube assembly 46 also includes a first pressing assembly, which includes:

[0063] The first buckle 17, the second buckle 18, the first push wire 19, the first slide rail 21 and the first slider 22, the first buckle 17 is fixed on the first support plate 15, the second buckle 18 is fixed on the second support plate 16, the first slider 22 cooperates with the first slide rail 21, the first slide rail 21 is vertically arranged on the side of the first support plate 15 close to the first duckbill body 2, one end of the first push wire 19 is fixed on the second buckle 18, the other end of the first push wire 19 passes through the first buckle 17 and the bottom end of the first slide rail 21 in turn, and is connected to the bottom of the first slider 22, and the first slider 22 is rotatably connected to the first annular frame on the side away from the first slide rail 21.

[0064] The first buckle 17 and the second buckle 18 are semicircular rings; the first slider 22 is specifically connected to the first annular frame 8, and the rotation connection is specifically: the first slider 22 can rotate around the first annular frame 8. As a preferred embodiment, the first slider 22 can be connected to the first annular frame 8 through a first slider ring 20, the first annular frame 8 passes through the first slider ring 20, and the first slider ring 20 is fixedly connected to the first slider.

[0065] The first needle tube assembly 46 also includes a second pressing assembly 23, and the second pressing assembly 23 includes:

[0066] The third buckle, the fourth buckle, the second pressing wire, the second slide rail and the second slider, the third buckle is fixed on the second support plate 16, the fourth buckle is fixed on the first support plate 15, the second slider cooperates with the second slide rail, the second slide rail is vertically arranged on the second support plate, one end of the second pressing wire is fixed on the fourth buckle, the other end of the second pressing wire passes through the third buckle and the bottom end of the second slide rail in sequence, and is connected to the bottom of the second slider, the side of the second slider away from the first slide rail is rotatably connected to the first annular frame. The second slider can be connected to the first annular frame 8 through the second slider ring, the first annular frame 8 passes through the second slider ring, and the second slider ring is fixedly connected to the second slider.

[0067] The first pressing assembly is arranged at one end of the first annular frame, and the second pressing assembly 23 is arranged at the other end of the first annular frame, and together they press the first annular frame 8 downward, providing a stable and parallel downward pressing force for the first annular frame 8, so that the first annular frame can smoothly push out the needle.

[0068] The first needle tube assembly 46 further includes a blocking block 9. A blocking block 9 is respectively provided at both ends of the first annular frame to prevent the first annular frame 8 from sliding out of the first slider ring and the second slider ring.

[0069] When the first duckbill body 2 and the second duckbill body 3 are opened, the second buckle 18 moves with the second duckbill body 3, the first buckle 17 moves with the first duckbill body 2, the first buckle 17 and the second buckle 18 move away from each other, the second buckle 18 pulls the first pressing wire 19 to move in the direction of the second buckle 18, the first pressing wire 19 drives the first slider to move downward along the first slide rail 21, the first slider moves downward and slides to the bottom of the first slide rail 21, drives the first annular frame 8 to move downward, the first annular frame 8 drives the outer hard tube 5 to move downward, and the first pressing assembly enables the needle 6 to extend from the needle hole 7 for fertilization. When the first duckbill body 2 and the second duckbill body 3 are closed, the spring 12 gives the first annular frame 8 an upward elastic force, and the first slider slides along the bottom of the first slide rail 21 to the top of the first slide rail 21.

[0070] The maximum rebound height of the first annular frame 8 driven by the spring 12 is smaller than the height of the first sliding block at the top end of the first sliding rail 21 .

[0071] Since the spring 12 is connected to the first annular frame 8 via the connecting ring 10 , the rebound height of the first annular frame 8 is smaller than the height of the first sliding block at the top end of the first sliding rail 21 .

[0072] Optionally, limit blocks are provided at the top ends of the first slide rail 21 and the second slide rail 21 to prevent the first slide block from sliding out.

[0073] The first pressing assembly can make the needle 6 extend along with the openings of the first duckbill body 2 and the second duckbill body 3, so as to realize synchronous fertilization of liquid fertilizer.

[0074] Optionally, the first needle tube assembly 46 further includes a circular tube 24 and a connecting tube 25. The circular tube 24 is arranged above the first circular frame 8. The circular tube 24 is connected to the circular tube through the connecting tube 25. The circular tube is connected to one end of the inner tube 4 through the fertilizer delivery tube. The fertilizer delivery tube is specifically a telescopic fertilizer delivery tube 45. The telescopic fertilizer delivery tube 45 has a function of being retractable in length.

[0075] The annular tube is semicircular, and the diameter of the pipeline of the circular tube is larger than the diameter of the pipeline of the annular tube, so as to ensure that the circular tube can provide sufficient fertilizer flow for multiple annular tubes, and the fertilizer transportation is more stable. The annular tube and the circular tube 24 are connected by multiple connecting tubes 25. When the needle 6 is inserted downward, the telescopic fertilizer delivery tube 45 can provide a certain movement margin for the inner tube 4, and the telescopic length of the telescopic fertilizer delivery tube 45 is greater than the length of the needle 6 moving downward.

[0076] The double-layer pipeline design of the circular tube and the annular tube is used to improve the uniformity and accuracy of the liquid fertilizer when it is bumpy, shaking or tilted during operation in hilly and mountainous areas or when facing complex terrain and uneven ground, and to control the liquid fertilizer to be synchronously transported to the first needle tube assembly and the second needle tube assembly for fertilization operations.

[0077] Specifically, the support seat 1 is U-shaped, and the first side plate 26 and the second side plate 27 extend upward from both sides of the first support plate 15, the first side plate 26 is opposite to the second side plate 27, and the support seat 1 is inserted between the first side plate 26 and the second side plate 27, and also includes an opening and closing component, which includes:

[0078] The first rotating axis 28, the second rotating axis 29, the first fixing member 30, the second fixing member 31 and the tension spring 32, the support seat 1 is hinged to the first duckbill body 2 through the first rotating axis 28, the support seat 1 is hinged to the second duckbill body 3 through the second rotating axis 29, the first fixing member 30 is fixed on the first side plate 26, the second fixing member 31 is fixed on the side of the support seat 1 close to the first side plate 26, one end of the tension spring 32 is connected to one end of the first rotating axis 28 close to the second side plate 27, the other end of the tension spring 32 is connected to one end of the second rotating axis 29 close to the second side plate 27, the vertical height of the first fixing member 30 and the vertical height of the second fixing member 31 are higher than the first rotating axis 28.

[0079] When one end of the tension spring 32 rotates and stretches along with the first rotating shaft 28 , the other end of the tension spring 32 can pull the second rotating shaft 29 to rotate.

[0080] The support seat 1 is provided with a seeding hole, and the seeding hole, the center of the circular tube 24, the center of the annular tube and the annular fertilization channel are opposite to each other. Seeds fall onto the ground through the seeding hole, the circular tube 24, the annular tube and the annular fertilization channel in sequence.

[0081] The first rotating shaft 28 passes through the first side plate 26, the support seat 1 and the second side plate 27. One end of the first rotating shaft 28 is fixedly connected to the first side plate 26, and the other end of the first rotating shaft 28 is fixedly connected to the second side plate 27. The first rotating shaft 28 can rotate around the axis of the first rotating shaft 28 in the support seat 1. One end of the pull wire 41 passes through the second fixing frame and is connected to the first fixing member 30. The second duckbill body 3 is fixedly connected to the second rotating shaft 29. The second rotating shaft can rotate around the axis of the second rotating shaft 29 relative to the support seat 1. When the pull wire 41 is pulled, the first side plate 26 rotates around the first rotating shaft 28, the first rotating shaft 28 drives one end of the tension spring 32 to rotate around the first rotating shaft 28, the other end of the tension spring 32 drives the second rotating shaft 29 to rotate, the second rotating shaft 29 drives the second duckbill body 3 to rotate, the second duckbill body 3 rotates with the first duckbill body 2, the first fixing member 30 can fix the end of the pull wire 41 on the first side plate 26, and the pull wire 41 can pass through the second fixing member 31 and can slide on the second fixing member 31. The first fixing member 30 and the second fixing member 31 are arranged in parallel, and the above structure is not limited to the structure of this opening and closing assembly. In the prior art, as long as the structure that can realize the opening and closing of the first duckbill body 2 and the second duckbill body 3 can be applied to this embodiment.

[0082] The second duckbill body 3 has the same structure as the first duckbill body 2 , and the second needle tube assembly 47 has the same structure as the first needle tube assembly 46 .

[0083] As a preferred embodiment, the structure of the second needle tube assembly is different from that of the first needle tube assembly in that the first pressing assembly of the second needle tube assembly does not include the first buckle and the second buckle, and it shares the first buckle and the second buckle with the first pressing assembly in the first needle tube assembly, and the second pressing assembly in the second needle tube assembly does not include the third buckle and the fourth buckle, and it shares the third buckle and the fourth buckle with the pressing assembly in the first needle tube assembly. Apart from this, the rest of the structure of the second needle tube assembly is the same as that of the first needle tube assembly.

[0084] The working principle of the duckbill hole seeder of the present invention is as follows: the first duckbill body 2 and the second duckbill body 3 are inserted into the soil, the first duckbill body 2 and the second duckbill body 3 are opened by the opening and closing assembly, and while opening, seedlings are thrown above the annular fertilization channel, the first pressing assembly and the second pressing assembly 23 press the first annular frame 8, and the needle 6 is extended from the needle hole 7 for fertilization, and after the seedlings fall to the ground, the first duckbill body 2 and the second duckbill body 3 move up and away from the ground to close, and the spring 12 simultaneously drives the needle 6 to retract from the needle hole 7 to the inside of the first duckbill body 2 to complete fertilization and sowing.

[0085] The present invention also discloses a sowing unit, including the above-mentioned duckbill type seed drill, and also including a frame 33 and a transmission assembly, the transmission assembly is connected to the duckbill type seed drill, and the transmission assembly includes:

[0086] Power input shaft 34, crank flywheel shaft 35, upper crank flywheel 36, lower crank flywheel 37, connecting rod 38 and sowing rocker arm 39; the power input shaft 34 is arranged at the bottom end of the frame 33, the crank flywheel shaft 35 is arranged at the top end of the frame 33, the power input shaft 34 and the crank flywheel shaft 35 are connected through a gear rack transmission, one end of the power input shaft 34 is connected to one end of the lower crank flywheel 37, the other end of the lower crank flywheel 37 is hinged to one end of the sowing rocker arm 39, the other end of the sowing rocker arm 39 is connected to the support seat 1, one end of the upper crank flywheel 36 is connected to the crank flywheel shaft 35, the other end of the upper crank flywheel 36 is hinged to one end of the connecting rod 38, and the other end of the connecting rod 38 is hinged to the sowing rocker arm 39.

[0087] Optionally, it also includes a pull-wire rocker arm 40, a pull wire 41, and a seed throwing bucket 42. The pull-wire rocker arm 40 is arranged at the top of the frame 33, and a cam is arranged at the other end of the upper crank flywheel 36 shaft 35, and the cam cooperates with the pull-wire rocker arm 40. One end of the pull-wire rocker arm 40 is connected to the pull wire, and the other end of the pull wire passes through the second fixing member 31 and is connected to the first fixing member 30. The seed throwing bucket 42 is arranged on the support seat 1, and the outlet end of the seed throwing is opposite to the annular fertilization channel.

[0088] The upper crank flywheel 36 includes a disc and a rectangular plate, the rectangular plate is connected to the circumference of the disc, and the lower crank flywheel 37 has the same shape as the upper crank flywheel 36. The power input wheel crank flywheel shaft 35 rotates, and through the sprocket transmission, drives the upper crank flywheel 36 shaft and the lower crank flywheel 37 shaft to rotate, and the upper crank flywheel 36 shaft 35 controls the reciprocating motion of the wire rocker arm 40 through the cam, and the wire rocker arm 40 controls the opening and closing of the duckbill type seed drill through the wire; the upper crank flywheel 36 shaft and the lower crank flywheel 37 shaft act on the sowing rocker arm 39 together, and the sowing rocker arm 39 drives the duckbill type seed drill to perform sowing operations.

[0089] Two duckbill hole seeders operate synchronously to achieve dense planting in double rows on large ridges, which can increase yield.

[0090] like Figures 10 to 12 As shown, the present invention also discloses a seeding machine, including at least two of the above-mentioned seeding units arranged side by side, and also including a liquid fertilizer barrel 43 and a liquid infusion main pipe 44. Every two adjacent seeding units are connected to one end of a liquid infusion main pipe 44, and the other end of the liquid infusion main pipe 44 is connected to the liquid fertilizer barrel 43.

[0091] The main infusion pipe 44 is arranged between two adjacent sowing units. The main infusion pipe 44 is connected to the circular pipe 24 in the first sowing unit through a first pipeline, and the main infusion pipe 44 is connected to the circular pipe 24 in the second sowing unit through a second pipeline. The main infusion pipe 44 is a telescopic pipe, which is convenient for the reciprocating movement of the machine and provides a variable space.

[0092] A load-bearing box is arranged on the frame 33, and the liquid fertilizer barrel 43 is fixed to the upper end of the liquid fertilizer barrel load-bearing box by bolts. The liquid infusion main pipe 44 is divided into left and right under the control of the hydraulic pump, and flows into the circular tube 24 of the first duckbill type seed drill through the first pipeline, and flows into the circular tube 24 of the second duckbill type seed drill through the second pipeline.

[0093] The upper crank flywheel 36 and the lower crank flywheel 37 operate synchronously to reduce power consumption, balance part of the vibration, make the operation more stable, and plant densely in double rows on large ridges, which can improve operation efficiency and increase yield.

[0094] The lid on the liquid fertilizer barrel 43 can be opened to replenish the liquid fertilizer at any time. The liquid fertilizer is divided left and right from the main infusion pipe 44 under the control of the hydraulic pump and flows into two adjacent sowing monomers. The hydraulic pump is provided with a filtering device to effectively filter the solid fiber materials in the liquid fertilizer.

[0095] Under the power input of the tractor, two adjacent sowing units operate synchronously to realize the large ridge double-row operation mode. While sowing, the fertilizer needles around the inside of the duckbill type hole seeder are pressed and extended, and liquid fertilizer is sprayed under the control of the hydraulic pump. Then the duckbill type hole seeder is closed under the action of the tension spring 32. At the same time, the fertilizer needles are driven to retract under the action of the first pressing wire 19 and the pressing spring 12 to complete an operation cycle.

[0096] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A duckbill type seed drill, comprising a support seat, a first duckbill body and a second duckbill body, wherein the support seat is hinged to the first duckbill body and the second duckbill body respectively, characterized in that: It also includes a first needle tube assembly and a second needle tube assembly; at least one of the first needle tube assemblies is arranged in the first duckbill body, and at least one of the second needle tube assemblies is arranged in the second duckbill body, and the first needle tube assembly and the second needle tube assembly form an annular fertilization channel; The first needle tube assembly comprises: An inner tube, an outer hard tube and a needle, the outer hard tube is sleeved on the outside of the inner tube, one end of the inner tube is connected to the fertilizer delivery tube, the other end of the inner tube is connected to the needle, and one end of the outer hard tube away from the fertilizer delivery tube is fixedly connected to the needle; a pinhole is arranged at the bottom end of the first duckbill body, the pinhole is opposite to the needle, and when fertilizing, the outer hard tube can drive the needle to extend out of the pinhole for fertilizing.

2. A duckbill type hole seeding device as claimed in claim 1, characterized in that: The first needle tube assembly also includes a first annular frame, a connecting ring and a half ring. The end of the outer hard tube close to the fertilizer delivery tube is connected to the connecting ring, and the end of the outer hard tube away from the fertilizer delivery tube is slidably connected to the half ring. The half ring is fixed on the inner wall of the first duckbill body, and the connecting ring is rotatably connected to the first annular frame.

3. A duckbill type hole seeding device as claimed in claim 2, characterized in that: The first needle tube assembly also includes a spring, which is sleeved on the outside of the outer hard tube, one end of the spring abuts against the connecting ring, and the other end of the spring abuts against the half ring.

4. A duckbill type hole seeding device as claimed in claim 3, characterized in that: The first needle tube assembly also includes a fixing ring, a needle tube groove is provided on the inner wall of the first duckbill body, the fixing ring is fixed at one end of the needle tube groove, the inner tube passes through the fixing ring and can slide relative to the fixing ring, the spring is embedded in the needle tube groove, and the depth of the needle tube groove is less than the diameter of the spring.

5. A duckbill type hole seeding device as claimed in claim 4, characterized in that: A first support plate is horizontally extended outward from the top of the first duckbill body, a second support plate is horizontally extended outward from the top of the second duckbill body, and the first needle tube assembly further includes a first pressing assembly, which includes: A first buckle, a second buckle, a first push wire, a first slide rail and a first slider, the first buckle is fixed on the first support plate, the second buckle is fixed on the second support plate, the first slider cooperates with the first slide rail, the first slide rail is vertically arranged on the side of the first support plate close to the first duckbill body, one end of the first push wire is fixed on the second buckle, the other end of the first push wire passes through the first buckle and the bottom end of the first slide rail in sequence, and is connected to the bottom of the first slider, and the side of the first slider away from the first slide rail is rotatably connected to the first annular frame.

6. A duckbill type hole seeding device as claimed in claim 5, characterized in that: It also includes a circular tube and a connecting tube. The first needle tube assembly also includes an annular tube. The annular tube is arranged above the first annular frame. The circular tube is arranged above the annular tube. The circular tube is connected to the annular tube through a connecting tube. The annular tube is connected to one end of the inner tube through the fertilizer delivery tube. The fertilizer delivery tube is a telescopic fertilizer delivery tube.

7. A duckbill type hole seeding device as claimed in claim 5, characterized in that: The support seat is U-shaped, and the first side plate and the second side plate extend upward from both sides of the first support plate, the first side plate is opposite to the second side plate, and the support seat is inserted between the first side plate and the second side plate, and also includes an opening and closing component, which includes: A first rotating axis, a second rotating axis, a first fixing member, a second fixing member and a tension spring, the support seat is hinged to the first duckbill body through the first rotating axis, the support seat is hinged to the second duckbill body through the second rotating axis, the first fixing member is fixed to the first side panel, the second fixing member is fixed to the side of the support seat close to the first side panel, one end of the tension spring is connected to one end of the first rotating axis close to the second side panel, the other end of the tension spring is connected to one end of the second rotating axis close to the second side panel, the vertical height of the first fixing member and the vertical height of the second fixing member are higher than the first rotating axis.

8. A sowing unit, characterized in that: The method comprises the duckbill type hole drill as claimed in claim 7, further comprising a frame and a transmission assembly, wherein the transmission assembly is connected to the duckbill type hole drill, and the transmission assembly comprises: A power input shaft, a crank flywheel shaft, an upper crank flywheel, a lower crank flywheel, a connecting rod and a sowing rocker arm; the power input shaft is arranged at the bottom end of the frame, the crank flywheel shaft is arranged at the top end of the frame, the power input shaft and the crank flywheel shaft are connected through a gear rack transmission, one end of the power input shaft is connected to one end of the lower crank flywheel, the other end of the lower crank flywheel is hinged to one end of the sowing rocker arm, the other end of the sowing rocker arm is connected to the supporting seat, one end of the upper crank flywheel is connected to the crank flywheel shaft, the other end of the upper crank flywheel is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the sowing rocker arm.

9. A sowing unit as claimed in claim 8, characterized in that: It also includes a pull-wire rocker arm, a pull wire, and a seed throwing bucket. The pull-wire rocker arm is arranged at the top of the frame, a cam is arranged at the other end of the upper crank flywheel shaft, and the cam cooperates with the pull-wire rocker arm. One end of the pull-wire rocker arm is connected to the pull wire, and the other end of the pull wire passes through the second fixing piece and is connected to the first fixing piece. The seed throwing bucket is arranged on the support seat, and the seed throwing outlet end is opposite to the annular fertilization channel.

10. A seeding machine, characterized in that: It comprises at least two sowing units as described in any one of claims 8 to 9 arranged side by side, and also comprises a liquid fertilizer barrel and a liquid infusion main pipe, wherein every two adjacent sowing units are connected to one end of the liquid infusion main pipe, and the other end of the liquid infusion main pipe is connected to the liquid fertilizer barrel.

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