Hole-forming seeding device

Abstract

The present invention discloses a hole-forming seeding device, which includes a hole-forming drive shaft. At least one hole-forming turntable is installed on the hole-forming drive shaft. A plurality of duckbill-type hole thorns are evenly distributed along the outer periphery of the hole-forming turntable. An opening and closing mechanism for driving the duckbill-type hole thorns to open and close is arranged inside the hole-forming turntable. A hole-forming drive member for driving the hole-forming drive shaft to rotate is installed on one of the hole-forming turntables. An opening and closing drive member for actuating the opening and closing mechanism is installed on this hole-forming turntable or other hole-forming turntables. The device also includes a pneumatic suction type seed metering device, which is located above the hole-forming turntable and is docked with the duckbill-type hole thorns rotated to the upper side. The hole-forming seeding device has the advantages of simple and reliable structure, being able to realize automatic hole formation, automatic seeding and sowing, and high automation degree.

Description

Technical Field

[0001] The present invention mainly relates to agricultural seeding implements, and particularly to a hole-forming seeding device. Background Art

[0002] The seed project has always been the focus of the world's economic work. As a populous country, it is particularly important for China to cultivate excellent varieties, increase food production, and ensure food security. For the cultivation of new crop varieties, the test quality is of utmost importance. Therefore, a self-propelled numerically controlled plot seeding machine with high automation, precise seeding, stability, and reliability has become an urgently needed tool for various scientific research and breeding units to carry out new variety cultivation, improved seed breeding, variety comparison, cultivation, and other field tests. Currently, the seeding requirements for self-propelled plot drill seeders are as follows: walking independently without relying on external power, evenly sowing a certain amount of seeds within the specified plot length, and after sowing one plot, sowing the next plot without stopping the machine. When sowing the next plot, there should be no seed residue in the seeding and fertilizing machine to avoid varietal mixing.

[0003] In the process of agricultural scientific research experiments, seeding is an extremely important link. To ensure the accuracy of experimental results, the seeding of experimental plots has high requirements for row spacing control and the uniformity of seeds within and between rows. For example, a certain amount of seeds need to be evenly sown within the specified plot length, and the seeding within and between rows in the same plot should be uniform, and varietal mixing should be avoided between different plots. Currently, in China, traditional manual seeding is still used in many experimental plots, which has the disadvantages of high labor intensity, cumbersome procedures, low seeding efficiency, uneven seeding, etc., seriously affecting the accuracy of agricultural scientific research experiments.

[0004] In recent years, some scientific research institutions or universities have started to use domestic (Hongxinglong, Heilongjiang) and imported (Austria) plot seeding machines for seeding. Due to the erratic seeding length varying with soil structure, frequent mixing between plots, extremely unstable soil penetration depth, and frequent occurrence of over-seeding and seed exposure, precise seeding cannot be achieved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a hole-forming seeding device with a simple and reliable structure, capable of automatically forming holes, automatically inoculating and seeding, and high automation.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A hole-forming sowing device comprises a hole-forming drive shaft, on which is mounted at least one hole-forming turntable, on which the outer circumference of the hole-forming turntable is evenly distributed a plurality of duck-billed hole-forming spikes, within which is disposed an opening and closing mechanism for driving the duck-billed hole-forming spikes to open and close, wherein one of the hole-forming turntables is provided with a hole-forming drive member for driving the hole-forming drive shaft to rotate, and the hole-forming turntable or other hole-forming turntables are provided with an opening and closing drive member for actuating the opening and closing mechanism, and also comprises an air-suction seed-metering device, which is located above the hole-forming turntable and docked with the duck-billed hole-forming spikes rotated upward.

[0008] As a further improvement of the above technical solution:

[0009] The duckbill-type acupuncture needle comprises a pair of symmetrically arranged half-puncture pieces, which are hinged to the outer periphery of the acupuncture rotating disk, and the rotation direction of the hinge points of the half-puncture pieces is consistent with the rotation direction of the acupuncture rotating disk.

[0010] When the hole-forming rotary disc rotates, the length of the half thorn piece that first contacts the field surface is greater than the length of the other half thorn piece.

[0011] The opening and closing mechanism includes an opening and closing shaft, a cam and an opening and closing triggering member, the opening and closing shaft is passed through each acupuncture turntable and is connected to the opening and closing driving member, the cam is installed in each acupuncture turntable and is connected to the opening and closing shaft, the opening and closing triggering member is installed in each duckbill acupuncture thorn and is continuously driven by the cam to drive the duckbill acupuncture thorn to open and close, the opening and closing shaft matches the number of duckbill acupuncture thorns on each acupuncture turntable, the cam and the opening and closing triggering member match the number of duckbill acupuncture thorns, and the opening and closing driving member matches the number of opening and closing shafts.

[0012] The opening and closing triggering member includes an opening member and a return spring. The opening member is installed on the hole-forming turntable. One end of the opening member contacts a pair of semi-piercing members and the other end is in continuous contact with the cam. The return spring is installed in the pair of semi-piercing members and drives the semi-piercing members to close.

[0013] The opening member includes a push rod, a push plate and a linear sleeve, wherein the linear sleeve is fixedly mounted on the hole-forming turntable, the push rod is inserted into the linear sleeve and is in continuous contact with the cam, and the push plate is mounted at the end of the push rod and is in contact with the semi-thorn members on both sides.

[0014] The reset spring comprises a transverse tension spring and a longitudinal tension spring, the two ends of the transverse tension spring are connected to the semi-thorn pieces on the corresponding sides, and one end of the longitudinal tension spring is connected to the hole-forming rotating disk and the other end is connected to the push plate.

[0015] Spherical guide bodies are arranged at both ends of the push plate, and guide rails cooperating with the spherical guide bodies are arranged on the inner side of the semi-thorn piece.

[0016] The cavitation drive member and the opening and closing drive member are both configured as motors.

[0017] A reinforcing rod is arranged inside the acupuncture rotating disk, and end covers are arranged on both sides of the acupuncture rotating disk.

[0018] The air suction seed metering device includes a seed metering barrel, a seed suction disk and an air shaft. The seed suction disk is installed in the seed metering barrel and divides the interior of the seed metering barrel into a seed chamber and a negative pressure chamber. The air shaft is penetrated through the center of the seed suction disk and the seed suction disk, and the air shaft drives the seed suction disk to rotate in the seed metering barrel. The part of the air shaft located in the negative pressure chamber is provided with an air groove communicated with the air shaft. The seed suction disk is evenly provided with seed suction holes connecting the seed chamber and the negative pressure chamber. The seed metering barrel is provided with a seed metering port connecting the seed chamber. The seed metering port is connected to the duckbill hole thorn rotated to the top, and the air shaft is connected to the hole forming drive shaft through a sprocket chain transmission pair.

[0019] A partition is arranged in the seed cavity, and the partition divides the seed cavity into a seed storage cavity and a seed discharge cavity, and the seed discharge port is communicated with the seed discharge cavity.

[0020] The seed discharging cylinder is provided with a seed inlet which is communicated with the seed storage cavity.

[0021] The partition is configured as a "7"-shaped plate.

[0022] A block for blocking the seed suction holes and driving the seeds to fall into the seed discharging opening is arranged in the negative pressure chamber, and the block corresponds to the position of the seed discharging opening.

[0023] The seed discharging cylinder is provided with a sensor for detecting whether seeds are discharged from the seed discharging port, and the sensor is located at the seed discharging port.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] The hole-forming seeding device of the present invention, when the hole-type seeding device operates, the hole-forming driving member drives the hole-forming turntable to rotate. At this time, the opening and closing driving member rotates with the hole-forming turntable, and the opening and closing driving member drives the opening and closing mechanism to drive the duckbill-shaped hole piercers to perform opening and closing actions. The actions of the duckbill-shaped hole piercers during opening and closing are as follows: The duckbill-shaped hole piercers achieve the closing action during the process of rotating from above to below, and achieve the opening action during the process of rotating from below to above. When located at the lowest position, hole formation is achieved and the duckbill-shaped hole piercers start to open to achieve seeding. When located at the highest position, they are open, and the air-suction type seed metering device discharges seeds into the duckbill-shaped hole piercers to achieve seeding. This process repeats. The hole-forming seeder performs pure rolling in the soil, and the duckbill-shaped hole piercers on the hole-forming seeder periodically penetrate and pull out of the soil. Synchronously, under the action of the opening and closing mechanism, during the rotation process, the duckbill-shaped hole piercers are periodically opened and closed (when the duckbill-shaped hole piercers operate to the highest and lowest points, they are both in the fully opened state). Compared with the traditional structure, this hole-forming seeder can achieve automatic hole formation by the duckbill-shaped hole piercers periodically penetrating and pulling out of the soil, and can achieve automatic seeding and automatic inoculation by the duckbill-shaped hole piercers being periodically opened and closed. The overall structure is simple and reliable, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the front view structural schematic diagram of the present invention.

[0027] Figure 2 is the three-dimensional structural schematic diagram of the hole-forming module in the present invention.

[0028] Figure 3 is the front view structural schematic diagram of the hole-forming module in the present invention.

[0029] Figure 4 is the side view structural schematic diagram of the hole-forming module in the present invention.

[0030] Figure 5 is Figure 4 the enlarged structural schematic diagram at position A of

[0031] Figure 6 is the structural schematic diagram of the push plate in the present invention.

[0032] Figure 7 is the three-dimensional structural schematic diagram of the air-suction type seed metering device in the present invention.

[0033] Figure 8 is the side view structural schematic diagram of the air-suction type seed metering device in the present invention.

[0034] Figure 9 is the assembly structural schematic diagram of the air shaft and the seed suction disc in the present invention.

[0035] Figure 10 is the three-dimensional sectional structural schematic diagram of the air-suction type seed metering device in the present invention.

[0036] Figure 11 It is a schematic three-dimensional sectional view (another perspective) of the air-suction type seed metering device in the present invention.

[0037] Each label in the figure represents:

[0038] 1. Hole-forming drive shaft; 2. Hole-forming turntable; 21. Reinforcing rod; 22. End cover; 3. Duckbill hole punch; 31. Semi-punching part; 4. Opening and closing mechanism; 41. Opening and closing rotating shaft; 42. Cam; 43. Opening and closing trigger part; 431. Opening part; 4311. Push rod; 4312. Push plate; 43121. Spherical guide body; 4313. Linear bushing; 432. Return spring; 4321. Lateral tension spring; 4322. Longitudinal tension spring; 5. Hole-forming drive part; 6. Opening and closing drive part; 7. Air-suction type seed metering device; 71. Seed metering cylinder; 711. Seed cavity; 7111. Partition board; 7112. Seed storage cavity; 7113. Seed metering cavity; 712. Negative pressure cavity; 713. Seed metering port; 714. Seed inlet; 715. Block; 716. Sensor; 72. Seed suction disc; 721. Seed suction air hole; 73. Air shaft; 731. Air groove; 8. Sprocket and chain transmission pair. Specific embodiments

[0039] The following will further elaborate on the present invention in detail with reference to the accompanying drawings of the specification and specific embodiments.

[0040] Figures 1 to 11An embodiment of the hole-forming seeding device of the present invention is shown, which includes a hole-forming drive shaft 1. At least one hole-forming turntable 2 is installed on the hole-forming drive shaft 1. A plurality of duckbill-shaped hole-poking needles 3 are evenly distributed along the outer periphery of the hole-forming turntable 2. An opening and closing mechanism 4 for driving the opening and closing of the duckbill-shaped hole-poking needles 3 is arranged inside the hole-forming turntable 2. A hole-forming drive member 5 for driving the rotation of the hole-forming drive shaft 1 is installed on one of the hole-forming turntables 2. An opening and closing drive member 6 for actuating the opening and closing mechanism 4 is installed on this hole-forming turntable 2 or other hole-forming turntables 2. It further includes a pneumatic suction type seed metering device 7. The pneumatic suction type seed metering device 7 is located above the hole-forming turntable 2 and is docked with the duckbill-shaped hole-poking needles 3 rotated to the upper part. When the hole-type seeding device operates, the hole-forming drive member 5 drives the rotation of the hole-forming turntable 2. At this time, the opening and closing drive member 6 rotates with the hole-forming turntable 2. The opening and closing drive member 6 drives the opening and closing mechanism 4 to drive the duckbill-shaped hole-poking needles 3 to perform opening and closing actions. The actions of the duckbill-shaped hole-poking needles 3 during opening and closing are as follows: The duckbill-shaped hole-poking needles 3 achieve a closing action during the process of rotating from the upper part to the lower part, and achieve an opening action during the process of rotating from the lower part to the upper part. When located at the lowest part, hole formation is achieved and the duckbill-shaped hole-poking needles 3 start to open to achieve seeding. When located at the uppermost part, it is open. The pneumatic suction type seed metering device 7 discharges seeds into the duckbill-shaped hole-poking needles 3 to achieve seeding. In this way, the hole-forming seeder performs pure rolling in the soil. The duckbill-shaped hole-poking needles 3 on the hole-forming seeder periodically penetrate into and pull out of the soil. Synchronously, under the action of the opening and closing mechanism 4, during the rotation process, the duckbill-shaped hole-poking needles 3 are periodically opened and closed (when the duckbill-shaped hole-poking needles 3 are at the highest point and the lowest point during operation, they are both in the state of complete opening). Compared with the traditional structure, this hole-forming seeding device can achieve automatic hole formation by the duckbill-shaped hole-poking needles 3 periodically penetrating into and pulling out of the soil, and can achieve automatic seeding and automatic sowing by the duckbill-shaped hole-poking needles 3 being periodically opened and closed. The overall structure is simple and reliable, and the degree of automation is high.

[0041] In this embodiment, the duckbill-shaped hole-poking needle 3 includes a pair of semi-needle members 31 arranged symmetrically. This pair of semi-needle members 31 is hinged to the outer periphery of the hole-forming turntable 2, and the rotation direction of the hinge point of the semi-needle member 31 is the same as the rotation direction of the hole-forming turntable 2. The semi-needle member 31 is hinged to the outer periphery of the hole-forming turntable 2, which can achieve periodic opening and closing to ensure the functions of automatic seeding and automatic sowing.

[0042] In this embodiment, when the hole-forming turntable 2 rotates, the length of the semi-needle member 31 that first contacts the field surface is greater than the length of the other semi-needle member 31. At the same time, the rotation direction of the hinge point of the semi-needle member 31 is set to be the same as the rotation direction of the hole-forming turntable 2. With such a setting, when forming holes, soil will not enter the gap between the pair of semi-needle members 31. Its structure is simple and the design is ingenious.

[0043] In this embodiment, the opening and closing mechanism 4 includes an opening and closing rotating shaft 41, a cam 42, and an opening and closing trigger 43. The opening and closing rotating shaft 41 passes through each cavity forming turntable 2 and is connected to the opening and closing driving member 6. The cam 42 is installed inside each cavity forming turntable 2 and is connected to the opening and closing rotating shaft 41. The opening and closing trigger 43 is installed inside each duckbill type cavity piercer 3 and is continuously driven by the cam 42 (the long and short radii of the cam 42 are periodically replaced) to drive the opening and closing of the duckbill type cavity piercer 3. The number of the opening and closing rotating shaft 41 matches the number of the duckbill type cavity piercers 3 on each cavity forming turntable 2. The number of the cam 42 and the opening and closing trigger 43 matches the number of the duckbill type cavity piercers 3. The number of the opening and closing driving member 6 matches the number of the opening and closing rotating shaft 41. In this structure, the opening and closing driving member 6 drives the cam 42 to rotate through the opening and closing rotating shaft 41, and the cam 42 drives the opening and closing trigger 43 to drive the duckbill type cavity piercer 3 to open and close periodically.

[0044] In this embodiment, the opening and closing trigger 43 includes an opening member 431 and a return spring 432. The opening member 431 is installed on the cavity forming turntable 2. One end of the opening member 431 contacts a pair of half piercers 31, and the other end is in continuous contact with the cam 42. The return spring 432 is installed inside a pair of half piercers 31 and drives the half piercers 31 to close. In this structure, the cam 42 drives the opening member 431 to push a pair of half piercers 31 to open through the long axis radius. When the short axis radius of the cam 42 contacts, the return spring 432 drives a pair of half piercers 31 to close, and its structure is simple and reliable.

[0045] In this embodiment, the opening member 431 includes a push rod 4311, a push plate 4312, and a linear bushing 4313. The linear bushing 4313 is fixedly installed on the cavity forming turntable 2. The push rod 4311 passes through the linear bushing 4313 and is in continuous contact with the cam 42. The push plate 4312 is installed at the end of the push rod 4311 and contacts the half piercers 31 on both sides. In this structure, the long axis radius of the cam 42 drives the push rod 4311 to move linearly inside the linear bushing 4313. The push rod 4311 drives the half piercers 31 on both sides to open through the push plate 4312. When the short axis radius of the cam 42 contacts, the return spring 432 drives a pair of half piercers 31 to close, and the push plate 4312 together with the push rod 4311 is reset in the reverse direction.

[0046] In this embodiment, the return spring 432 includes a transverse tension spring 4321 and a longitudinal tension spring 4322. Both ends of the transverse tension spring 4321 are connected to the corresponding half piercers 31 on one side. One end of the longitudinal tension spring 4322 is connected to the cavity forming turntable 2, and the other end is connected to the push plate 4312. In this structure, when the short axis radius of the cam 42 contacts the push rod 4311, the transverse tension spring 4321 pulls the half piercers 31 on both sides to close, and the longitudinal tension spring 4322 pulls the push plate 4312 together with the push rod 4311 to be reset in the reverse direction.

[0047] In this embodiment, spherical guides 43121 are provided at both ends of the push plate 4312, and guide rails cooperating with the spherical guides 43121 are provided inside the semi-thorn member 31. In this structure, through the cooperation of the spherical guides 43121 and the guide rails, the smoothness and accuracy of the reciprocating movement of the push plate 4312 are improved.

[0048] In this embodiment, both the hole-forming driving member 5 and the opening / closing driving member 6 are configured as motors. Its structure is simple and it is convenient to use.

[0049] In this embodiment, a reinforcing rod 21 is provided inside the hole-forming turntable 2, and end caps 22 are provided on both sides of the hole-forming turntable 2. The provision of the reinforcing rod 21 can improve the overall strength of the hole-forming turntable 2; while the provision of the end caps 22 can ensure the sealing performance of the hole-forming turntable 2 and improve the service life of the internal parts.

[0050] In this embodiment, the air-suction type seed metering device 7 includes a seed metering cylinder 71, a seed suction disc 72 and an air shaft 73. The seed suction disc 72 is sleeved inside the seed metering cylinder 71 and divides the interior of the seed metering cylinder 71 into a seed cavity 711 and a negative pressure cavity 712. The air shaft 73 passes through the centers of the seed suction disc 72, the seed metering cylinder 71 and the seed suction disc 72, and the air shaft 73 drives the seed suction disc 72 to rotate inside the seed metering cylinder 71. An air groove 731 communicating with the air shaft 73 is provided in the part of the air shaft 73 located in the negative pressure cavity 712. Seed suction holes 721 communicating the seed cavity 711 and the negative pressure cavity 712 are evenly distributed on the seed suction disc 72. A seed discharging port 713 communicating the seed cavity 711 is provided on the seed metering cylinder 71. The seed discharging port 713 is docked with the duckbill type hole piercer 3 rotated to the upper side. The air shaft 73 is connected to the hole-forming driving shaft 1 through a sprocket chain transmission pair 8. When this air-suction type seed metering device operates, the driving motor drives the air shaft 73 to drive the seed suction disc 72 to rotate inside the seed metering cylinder 71. At this time, the air pump sucks air from one end of the air shaft 73, and sucks away the air in the negative pressure cavity 712 through the air groove 731 of the air shaft 73 to form a negative pressure. As the seed suction disc 72 rotates, the seed suction holes 721 on the seed suction disc 72 suck the seeds in the seed cavity 711 and rotate together. When the seed suction holes 721 reach the seed discharging port 713, the suction force is released, and the seeds fall under the action of gravity and are discharged through the seed discharging port 713 to the duckbill type hole piercer 3. Compared with the traditional structure, this air-suction type seed metering device 7 generates a rotational force and a suction force through the air shaft 73 to form an air-suction type seed metering effect. Its structure is simple and reliable, and the degree of automation is high, and precise seed metering can be realized.

[0051] In this embodiment, a partition plate 7111 is provided inside the seed cavity 711. The partition plate 7111 divides the seed cavity 711 into a seed storage cavity 7112 and a seed discharging cavity 7113. The seed discharging port 713 communicates with the seed discharging cavity 7113. The provision of this partition plate 7111 cleverly divides the seed cavity 711 into the seed storage cavity 7112 and the seed discharging cavity 7113, ensuring that the two cavities do not interfere with each other and further improving the accuracy of seed metering.

[0052] In this embodiment, a seed inlet 714 communicating with the seed storage cavity 7112 is formed in the seed metering cylinder 71. In this structure, seeds can be placed into the seed storage cavity 7112 through the seed inlet 714 for storage, so that the seed suction holes 721 can suck the seeds away from the seed storage cavity 7112.

[0053] In this embodiment, the partition plate 7111 is arranged as a "7"-shaped plate. With such an arrangement, when seeds are placed into the seed storage cavity 7112 through the seed inlet 714, they can flow along the "7"-shaped plate to the bottom of the seed storage cavity 7112, facilitating the orderly suction of the seeds by the seed suction holes 721, and its structure is simple and ingenious.

[0054] In this embodiment, a stopper 715 for blocking the seed suction holes 721 to drive the seeds to fall into the seed discharge port 713 is provided in the negative pressure cavity 712, and the stopper 715 corresponds to the position of the seed discharge port 713. The provision of the stopper 715 enables the seed suction holes 721 to be blocked when they arrive, the negative pressure at the seed suction holes 721 disappears, and the seeds fall under the action of gravity, eliminating the need to repeatedly start and stop the air pump, thus greatly reducing the energy consumption.

[0055] In this embodiment, a sensor 716 for detecting whether seeds are discharged from the seed discharge port 713 is provided on the seed metering cylinder 71, and the sensor 716 is located at the seed discharge port 713. The sensor 716 is used to detect whether seeds are discharged from the seed discharge port 713 to prevent the phenomenon of missed seeding.

[0056] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hole-forming seeding device, characterized in that: It includes a hole-forming drive shaft (1), at least one hole-forming turntable (2) is installed on the hole-forming drive shaft (1), a plurality of duckbill-shaped hole-poking needles (3) are evenly distributed along the outer periphery of the hole-forming turntable (2), an opening and closing mechanism (4) for driving the opening and closing of the duckbill-shaped hole-poking needles (3) is arranged in the hole-forming turntable (2), a hole-forming drive member (5) for driving the rotation of the hole-forming drive shaft (1) is installed on one of the hole-forming turntables (2), the hole-forming drive member (5) is set as a motor, an opening and closing drive member (6) for making the opening and closing mechanism (4) act is installed on this hole-forming turntable (2) or other hole-forming turntables (2), and it also includes a pneumatic suction type seed metering device (7), the pneumatic suction type seed metering device (7) is located above the hole-forming turntable (2) and is docked with the duckbill-shaped hole-poking needles (3) rotated to the upper part, and a reinforcing rod (21) is arranged in the hole-forming turntable (2); The duckbill-shaped hole-poking needle (3) includes a pair of semi-needle members (31) arranged symmetrically, this pair of semi-needle members (31) are hinged to the outer periphery of the hole-forming turntable (2), and the rotation direction of the hinge point of the semi-needle member (31) is the same as the rotation direction of the hole-forming turntable (2); when the hole-forming turntable (2) rotates, the length of the semi-needle member (31) that first contacts the field surface is greater than the length of the other semi-needle member (31). The opening and closing mechanism (4) includes an opening and closing rotating shaft (41), a cam (42) and an opening and closing trigger member (43), the opening and closing rotating shaft (41) passes through each hole-forming turntable (2) and is connected with the opening and closing drive member (6), the cam (42) is installed in each hole-forming turntable (2) and is connected with the opening and closing rotating shaft (41), the opening and closing trigger member (43) is installed in each duckbill-shaped hole-poking needle (3) and is continuously driven by the cam (42) to drive the opening and closing of the duckbill-shaped hole-poking needle (3), the opening and closing rotating shaft (41) matches the number of duckbill-shaped hole-poking needles (3) on each hole-forming turntable (2), the cam (42) and the opening and closing trigger member (43) match the number of duckbill-shaped hole-poking needles (3), and the opening and closing drive member (6) matches the number of opening and closing rotating shafts (41).

2. The hole-forming seeding device according to claim 1, characterized in that: The opening and closing trigger member (43) includes an opening member (431) and a return spring (432), the opening member (431) is installed on the hole-forming turntable (2), one end of the opening member (431) contacts a pair of semi-needle members (31), and the other end is in continuous contact with the cam (42), and the return spring (432) is installed in a pair of semi-needle members (31) and drives the semi-needle members (31) to close.

3. The hole-forming seeding device according to claim 2, characterized in that: The opening member (431) includes a push rod (4311), a push plate (4312) and a linear shaft sleeve (4313), the linear shaft sleeve (4313) is fixedly installed on the hole-forming turntable (2), the push rod (4311) passes through the linear shaft sleeve (4313) and is in continuous contact with the cam (42), and the push plate (4312) is installed at the end of the push rod (4311) and contacts the semi-needle members (31) on both sides.

4. The hole-forming seeding device according to claim 3, characterized in that: The reset spring (432) includes a lateral tension spring (4321) and a longitudinal tension spring (4322). Both ends of the lateral tension spring (4321) are connected to the semi-thorn members (31) on the corresponding side. One end of the longitudinal tension spring (4322) is connected to the cavity-forming turntable (2), and the other end is connected to the push plate (4312).

5. The hole-forming seeding device according to claim 4, characterized in that: Spherical guide bodies (43121) are provided at both ends of the push plate (4312), and guide rails that cooperate with the spherical guide bodies (43121) are provided inside the semi-thorn members (31).

6. The hole-forming seeding device according to any one of claims 1 to 5, characterized in that: The opening and closing drive member (6) is set as a motor.

7. The hole-forming seeding device according to any one of claims 1 to 5, characterized in that: End covers (22) are provided on both sides of the cavity-forming turntable (2).

8. The hole-forming seeding device according to any one of claims 1 to 5, characterized in that: The air-suction type seed metering device (7) includes a seed metering cylinder (71), a seed suction disc (72), and an air shaft (73). The seed suction disc (72) is sleeved inside the seed metering cylinder (71) and divides the interior of the seed metering cylinder (71) into a seed cavity (711) and a negative pressure cavity (712). The air shaft (73) passes through the centers of the seed suction disc (72) and the seed metering cylinder (71), and the air shaft (73) drives the seed suction disc (72) to rotate inside the seed metering cylinder (71). An air groove (731) that communicates with the air shaft (73) is provided in the part of the air shaft (73) located in the negative pressure cavity (712). Seed suction holes (721) that communicate the seed cavity (711) and the negative pressure cavity (712) are evenly distributed on the seed suction disc (72). A seed discharging port (713) that communicates with the seed cavity (711) is provided on the seed metering cylinder (71). The seed discharging port (713) is docked with the duckbill-type cavity thorn (3) rotated to the upper side. The air shaft (73) is connected to the cavity-forming drive shaft (1) through a sprocket chain transmission pair (8).

9. The hole-forming seeding device according to claim 8, wherein: A partition plate (7111) is provided in the seed cavity (711). The partition plate (7111) divides the seed cavity (711) into a seed storage cavity (7112) and a seed discharging cavity (7113). The seed discharging port (713) communicates with the seed discharging cavity (7113).

10. The hole-forming seeding device according to claim 9, characterized in that: A seed inlet (714) that communicates with the seed storage cavity (7112) is provided on the seed metering cylinder (71).

11. The hole-forming seeding device according to claim 10, characterized in that: The partition plate (7111) is set as a "7"-shaped plate.

12. The hole-forming seeding device according to claim 11, characterized in that: A block (715) for blocking the seed suction holes (721) to drive the seeds to fall into the seed discharging port (713) is provided in the negative pressure cavity (712). The block (715) corresponds to the position of the seed discharging port (713).

13. The hole-forming seeding device according to claim 12, characterized in that: A sensor (716) for detecting whether seeds are discharged from the seed discharging port (713) is provided on the seed metering cylinder (71). The sensor (716) is located at the seed discharging port (713).

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