Air-blowing type rice precision seeding device

Abstract

The invention provides an air-blowing type rice precision seeding device, which belongs to the technical field of agricultural engineering and comprises a machine head, a suspension mechanism, a plurality of seed supply mechanisms, a seed blowing mechanism and a ditching and earthing mechanism. The suspension mechanism is connected with the tail end of the machine head; each seed supply mechanism comprises a seed box, a high-frequency vibrator and a seed metering device, the seed box is fixedly connected with the suspension mechanism, the high-frequency vibrator is located below the seed box, the high-frequency vibrator is provided with a spiral frame which approaches the seed box and extends outwards, and the spiral frame is provided with a feeding port and a discharging port and is used for dividing seeds in the seed box into single-row seed flows; the seed-metering device is connected with the high-frequency vibrator and is used for receiving a single row of seed flows and distributing a plurality of batches for seed metering so as to control the seeding quantity; the seed blowing mechanism is connected with the seed metering device and is used for blowing discharged seeds into soil; and the ditching and soil covering mechanism is connected with the suspension mechanism. The device can adapt to different seeding environments, realizes precise seeding, and improves the emergence rate of seeds.

Description

Technical Field

[0001] The present application relates to the field of agricultural engineering technology, and in particular to an air-blown precision rice seeding device. Background Art

[0002] As one of the main food crops in my country, the planting area and yield of rice are of great significance to the national food security. With the acceleration of agricultural modernization, mechanized rice planting technology has been widely used and developed.

[0003] Although the traditional hole-type seed metering device has met the needs of rice sowing to a certain extent, its sowing effect and efficiency still need to be improved. In addition, the hole-type seed metering device has the problem of inaccurate sowing amount adjustment and stability needs to be improved, which limits its application under different planting conditions. For hybrid rice or scenes requiring precision sowing, the effect is not good.

[0004] The existing rice direct seeding machine has the following shortcomings in sowing: (1) The sowing amount of its seeding device cannot be flexibly adjusted according to different planting needs, which limits its application scope. In addition, some seeding devices have the problem of uneven sowing during the sowing process, which affects the rice germination rate and yield; (ii) Its seed meter is only suitable for specific planting methods or rice seed types and lacks versatility; (3) The rice sowing method is to scatter rice seeds on the mud surface, which will be eaten by birds or mice, resulting in a decrease in rice seeds, thus affecting rice yields; Based on this, there is an urgent need for a sowing device that can adapt to different sowing environments to achieve precision sowing and improve the germination rate of rice seeds. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, the present application provides an air-blown rice precision seeding device that can adapt to different seeding environments, achieve precision seeding, and improve the seed emergence rate.

[0007] The present application provides an air-blown precision rice seeding device, comprising a machine head, a suspension mechanism, a plurality of seed supply mechanisms, a seed blowing mechanism and a furrowing and soil covering mechanism. The suspension mechanism is connected to the end of the machine head; each seed supply mechanism comprises a seed box, a high-frequency vibrator and a seed metering device, the seed box is fixedly connected to the suspension mechanism, the high-frequency vibrator is located below the seed box, the high-frequency vibrator has a spiral frame approaching the seed box and extending outward, the spiral frame has a feed inlet and a discharge outlet, and is used to divert the seeds in the seed box into a single-row seed flow, the seed metering device is connected to the high-frequency vibrator, and the seed metering device is used to receive the single-row seed flow and distribute several batches for seeding to control the sowing quantity; the seed blowing mechanism is connected to the seed metering device, and the seed blowing mechanism is used to blow the discharged seeds into the soil; the furrowing and soil covering mechanism is connected to the suspension mechanism.

[0008] In some embodiments, the suspension mechanism includes: a hanging joint connected to the machine head for suspension; a connecting spindle fixedly connected to the hanging joint; a bearing sleeved on the connecting spindle; a connecting frame, a surface close to the bearing having a bearing seat fixedly installed thereon, the connecting frame and the bearing being connected through the bearing seat; a mounting frame connected to the connecting frame for fixing the seed box; a plurality of balancing springs symmetrically distributed on both sides of the hanging joint, the balancing springs being connected to the connecting frame and the hanging joint.

[0009] In this embodiment, the suspension mechanism facilitates the quick connection between the air-blown rice precision seeding device and the machine head, ensuring that the device operates more stably; the connecting frame facilitates the connection between the suspension mechanism and the furrowing and soil covering mechanism.

[0010] In some embodiments, the mounting frame includes: multiple fixing plates; screws, respectively connecting the fixing plates and the connecting frame; a first mounting tube, passing through the multiple fixing plates and fixedly connected to the fixing plates; a second mounting tube, arranged parallel to the first mounting tube, the second mounting tube passing through the multiple fixing plates and fixedly connected to the fixing plates.

[0011] In this embodiment, the fixing plate on the mounting frame can be used to fix the seed box to prevent the seed box from shaking when the device is in operation, thereby improving the seed supply efficiency, and the screw rod is used to stabilize the mounting frame.

[0012] In some embodiments, the high-frequency vibrator includes: an outer cover; a vibration disk having a spiral frame; an upper base fixedly connected to the vibration disk; an armature fixedly connected to the upper base; an electromagnet arranged at a relative interval to the armature for generating a periodic electromagnetic excitation force; a lower base fixedly connected to the electromagnet and the outer cover; and a plurality of leaf springs arranged around the electromagnet and fixedly connected to the upper base and the lower base respectively.

[0013] In this embodiment, the electromagnet generates a periodic electromagnetic excitation force which works together with the leaf spring, so that the armature and the vibration disk realize periodic high-frequency vibration of the vertical axis together, and the vibration frequency is between 80Hz-120Hz. The best seed supply effect can be achieved within this vibration range; the seeds stored in the seed box fall into the middle of the vibration disk, and the seeds are vibrated to move forward along the spiral frame and form a uniform and continuous single-row seed flow.

[0014] In some embodiments, the seed meter includes: an outer shell, having a seed guide tube and a seed discharge tube, and a mounting plate is provided on the surface of the outer shell near the seed discharge tube; an end cover, connected to the outer shell to form a closed cavity, and a photoelectric sensor is provided on the outer surface of the end cover; an impeller, rotatably mounted on the outer shell and the end cover, and a plurality of blades are distributed on the surface of the impeller, and the ends of the blades away from the impeller surface are close to the inner wall of the outer shell.

[0015] In this embodiment, the photoelectric sensor is used to accurately record the sowing quantity, and the evenly distributed blades of the impeller divide the seeds sent from the seed guide tube into several batches as they rotate, thereby achieving uniform sowing.

[0016] In some embodiments, the seed row tube includes: a first seed row tube, connected to the outer shell and communicated with the closed cavity; and a second seed row tube, connected to the first seed row tube at an acute angle.

[0017] In this embodiment, the second row of seed tubes are connected to the first row of seed tubes at an acute angle, and the connection is approximately located in the middle of the second row of seed tubes. This inclination angle is conducive to the seeds entering the soil with the help of airflow, thereby improving the survival rate of the seeds.

[0018] In some embodiments, the seed blowing mechanism includes: an air flow pipe connected to the end of the second row of seed pipes away from the soil; a blower fixedly connected to the machine head; an air branch pipe connected to the air outlet of the blower, the air branch pipe having multiple air branch outlets; and multiple hoses, each hose being respectively connected to the air branch outlet and the air flow pipe.

[0019] In some embodiments, the ditching and soil covering mechanism includes: a soil covering base plate, including an arc-shaped plate and a horizontal plate, the arc-shaped plate is fixedly connected to the horizontal plate, a plurality of ditch openers are spaced apart at the bottom of the horizontal plate, and a seed ditch opener is provided between adjacent ditch openers; soil covering side plates are disposed on both sides of the soil covering base plate; side mudguards are fixedly connected to the soil covering side plates; a plurality of support frames are evenly distributed on the surface of the soil covering base plate, and the support frames are connected to the connecting frames; an installation assembly includes an installation base plate, an installation side plate and a plurality of support blocks, the installation base plate is respectively fixedly connected to the support frame and the seed metering device, the installation side plates are respectively connected to both sides of the installation base plate, the support blocks are evenly distributed on the surface of the installation base plate and are connected through the second installation pipe; a transmission device is disposed on both sides of the installation side plate and is connected to the impeller transmission.

[0020] In this embodiment, the trenching and soil covering mechanism can effectively reduce movement resistance, and the side fenders can effectively block impurities such as mud and water splashed during work, thereby adapting to different working environments.

[0021] In some embodiments, the spiral frame includes: a bottom plate; an inner plate; an outer plate, which is arranged parallel to the inner plate and abuts against the inner plate after extending outward; the inner plate and the outer plate are respectively connected to both sides of the bottom plate, forming a channel with two open ends with the bottom plate.

[0022] In this embodiment, the outer plate abuts against the inner plate that extends outward, which can prevent the seeds in the seed box from falling outside the vibration plate when they fall into the vibration plate, resulting in seed loss, which is beneficial to improving sowing efficiency.

[0023] In some embodiments, a wind baffle is provided inside the second row of seed tubes, and the wind baffle is close to the connection between the first row of seed tubes and the second row of seed tubes away from the soil.

[0024] In this embodiment, the airflow in the airflow tube uses the Venturi effect to increase the airflow speed when passing through the wind baffle, which is beneficial to drive the seeds to move toward the second row of seed tubes, so that the seeds are blown into the soil at a certain speed and angle, which is beneficial for the soil to cover the seeds and improve the seed germination rate.

[0025] Compared with the prior art, the above technical solution provided by the present application at least includes the following technical effects: The present application provides an air-blown precision rice seeding device that can adapt to different seeding environments, realize precision seeding, and improve the emergence rate of rice seeds. The machine head drives the air-blown precision rice seeding device to move forward, and the seeds are diverted into a uniform single-row seed flow through the cooperation of the seed supply mechanism and the seed discharge mechanism, and are blown into the soil in batches to realize precision seeding. The furrowing and covering mechanism can reduce the resistance during furrowing, making the device smoother during the furrowing process, and convenient for adapting to different soil environments. In addition, the weight of the soil can be used to cover the seeds during sowing, thereby improving the emergence rate of the seeds.

[0026] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 It is a schematic structural diagram of an air-blown rice precision seeding device according to some embodiments of the present application; Figure 2 A schematic diagram of the structure of the suspension mechanism of some embodiments of the present application; Figure 3 A side view of a suspension mechanism according to some embodiments of the present application; Figure 4 A schematic diagram of the external structure of a high-frequency vibrator according to some embodiments of the present application; Figure 5 A schematic diagram of the internal structure of a high-frequency vibrator according to some embodiments of the present application; Figure 6 This is a schematic diagram of the structure of a seed metering device in some embodiments of the present application; Figure 7 It is a schematic diagram of the structure of the seed blowing mechanism and the installation assembly of some embodiments of the present application; Figure 8 This is a schematic structural diagram of the trenching and soil covering mechanism of some embodiments of the present application.

[0028] in, Figures 1 to 8 The corresponding relationship between the reference numerals and the component names is as follows: 100, nose; 200, suspension mechanism; 210, hanging joint; 220, balance spring; 230, mounting frame; 231, first mounting tube; 232, second mounting tube; 233, fixing plate; 234, screw rod; 240, connecting frame; 250, connecting spindle; 260, bearing; 270, bearing seat; 300, seed supply mechanism; 310, seed box; 320, high-frequency vibrator; 321, outer cover; 322, vibration plate; 323, upper base; 324, armature; 325, electromagnet; 326, lower base; 327, leaf spring; 330, seed meter; 331, outer shell; 3311, seed guide tube; 3312, first row seed tube; 3313, second row seed tube; 3314, air flow tube; 332, end cover; 333, impeller; 400, seed blowing mechanism; 410, blower; 420, air distribution duct; 430, hose; 500, trenching and soil covering mechanism; 510, soil covering bottom plate; 511, ditch opener; 512, seed ditch opener; 520, soil covering side plate; 530, side fender; 540, mounting assembly; 541, mounting bottom plate; 542, mounting side plate; 543, support block; 550, support frame; 560, transmission. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0031] Refer to the following Figures 1 to 8 An air-blowing precision rice seeding device provided according to some embodiments of the present application is described.

[0032] like Figure 1 As shown, the air-blowing precision rice seeding device provided according to some embodiments of the present application includes a machine head 100, a suspension mechanism 200, a plurality of seed supply mechanisms 300, a seed blowing mechanism 400, and a furrowing and soil covering mechanism 500. The suspension mechanism 200 is connected to the end of the machine head 100; each seed supply mechanism 300 includes a seed box 310, a high-frequency vibrator 320 and a seed meter 330. The seed box 310 is used to store seeds and is fixedly connected to the suspension mechanism 200. The high-frequency vibrator 320 is located below the seed box 310. The high-frequency vibrator 320 has a spiral frame approaching the seed box 310 and extending outward. The spiral frame has a feed inlet and a discharge outlet, which is used to divert the seeds dropped in the seed box 310 into a single-row seed flow. The seed meter 330 is connected to the high-frequency vibrator 320. The seed meter 330 is used to receive the single-row seed flow and distribute it to several batches for seeding to control the sowing quantity; the seed blowing mechanism 400 is connected to the seed meter 330, and the seed blowing mechanism 400 is used to blow the discharged seeds into the soil; the trenching and covering mechanism 500 is connected to the suspension mechanism 200 for trenching and sowing.

[0033] It should be noted that the machine head 100 is a power device, which provides power for the air-blown rice precision seed supply device to move forward. The machine head 100 can drag the air-blown rice precision seeding device to move forward through the suspension mechanism 200. The suspension mechanism 200 can be connected to the machine head 100 by a three-point suspension method. The three-point suspension method facilitates the quick connection between the suspension mechanism 200 and the machine head, and makes the air-blown rice precision seed supply device more stable when moving. Multiple seed supply mechanisms 300 are evenly distributed on the trenching and covering mechanism 500, and the seed blowing mechanism 400 is fixedly connected to the machine head 100 through a fixed base.

[0034] When the air-blown precision rice seeding device is in operation, the machine head 100 pulls the suspension mechanism 200 to move forward, and the rice seeds fall from the seed box 310 into the vibration plate, and the electromagnet 325 in the high-frequency vibrator 320 is energized to vibrate periodically, and the seeds rise along the spiral frame of the vibration plate 322 to form a continuous seed flow, and the seed flow passes through the seed guide tube 3311 and falls into the seed meter 330; during the seeding process, the impeller 333 of the seed meter 330 is driven by the transmission device 560 to rotate to perform seeding; during the seeding process, the seeding port at the lower end of the seed meter 330 is connected to the seeding tube, and the seeds fall out of the seeding tube, and the blower 420 generates airflow, and the air distribution pipe 420 divides the airflow, and the airflow is transported by the hose 430 to the airflow pipe 3314 to blow the seeds into the soil to complete the seeding. The sowing amount can be controlled by adjusting the vibration frequency of the high-frequency vibrator 320 and the rotation speed of the transmission device 560 to achieve precise sowing.

[0035] In some possible embodiments, Figure 2 As shown, the suspension mechanism 200 includes: a hanging joint 210 suspended and connected to the machine head 100; a connecting spindle 250, fixedly connected to the hanging joint 210; a bearing 260, sleeved on the connecting spindle 250; a connecting frame 240, a bearing seat 270 fixedly installed on the surface close to the bearing 260, and the connecting frame 240 and the bearing 260 are connected through the bearing seat 270; a mounting frame 230, connected to the connecting frame 240, and used to fix the seed box 310; a plurality of balancing springs 220, symmetrically distributed on both sides of the hanging joint 210, and the balancing springs 220 are connected to the connecting frame 240 and the hanging joint 210.

[0036] In this embodiment, the hanging joint 210 includes two hanging side plates, a hanging main plate, a hanging cover plate and a hook rod. The two hanging side plates are arranged at intervals, and the hook rod is arranged between the two hanging side plates. The hook rod is used to hang the hanging joint at the end of the machine head 100, and the hanging cover plate is used to connect the tops of the two hanging side plates; the connecting spindle 250 is fixedly connected to the hanging main plate of the hanging joint 210 by welding, and the connecting spindle 250 is a cylinder; the bearing 260 is a cylinder with a cavity, which is sleeved with the connecting spindle 250; the connecting spindle 250 is clamped together with the bearing seat 270, and the shaft The bottom end of the support 270 is welded to the upper surface of the connecting frame 240 near the bearing 260. The connecting frame 240 is U-shaped and can be used to indirectly connect the trenching and covering mechanism 500; the connecting frame 240 is fixedly connected to the hanging joint 210 through a plurality of balance springs 220 symmetrically distributed on both sides of the hanging joint 210, and one end of the balance spring 220 is connected to the hanging side plates on both sides of the hanging joint 210 through a turnbuckle screw, and the other end is connected to the upper surface of the connecting frame 240 through a lifting eye bolt; the mounting frame 230 is fixedly connected to the upper surface of the connecting frame 240, and the mounting frame 230 is used to fix the seed metering device 330.

[0037] In some possible embodiments, Figure 1, Figure 2 As shown, the mounting frame 230 includes: a plurality of fixing plates 233; screws 234, respectively connecting the fixing plates 233 and the connecting frame 240; a first mounting tube 231, penetrating the plurality of fixing plates 233 and fixedly connected to the fixing plates 233; a second mounting tube 232, arranged in parallel with the first mounting tube 231, and the second mounting tube 232 penetrates the plurality of fixing plates 233 and fixedly connected to the fixing plates 233.

[0038] In this embodiment, if Figure 3 As shown, the fixing plate 233 can be in a square, rectangular, elliptical or other shapes, and is used to fix the seed box 310. There are through holes at both ends of the fixing plate 233 that are compatible with the first mounting tube 231 and the second mounting tube 232. The first mounting tube 231 and the second mounting tube 232 can be cylindrical or other shapes, and the first mounting tube 231 and the second mounting tube 232 are arranged in parallel, and multiple fixing plates 233 are penetrated by the through holes on the fixing plate 233 and are fixedly connected to the fixing plate 233; the fixing plate 233 is also provided with multiple mounting holes for installing screw rods 234, each fixing plate 233 is installed with screw rods 234, one end of the screw rod 234 can be installed on different mounting holes of the fixing plate 233 to achieve position adjustment of the mounting frame 230, and the other end of the screw rod 234 is fixedly connected to the upper surface of the connecting frame 240 by a lifting eye bolt, which can keep the mounting frame 230 stable during device operation and prevent the seed box 310 fixed on the fixing plate 233 from shaking, thereby affecting seed supply.

[0039] In some possible embodiments, Figure 4 , Figure 5 As shown, the high-frequency vibrator 320 includes: an outer cover 321; a vibration disk 322 having a spiral frame; an upper base 323 fixedly connected to the vibration disk 322; an armature 324 fixedly connected to the upper base 323; an electromagnet 325 arranged at a relative interval to the armature 324, for generating a periodic electromagnetic excitation force; a lower base 326 fixedly connected to the electromagnet 325 and the outer cover 321; and a plurality of leaf springs 327 arranged around the electromagnet 325, fixedly connected to the upper base 324 and the lower base 326, respectively.

[0040] In this embodiment, the outer cover 321 is a hollow cylinder with an opening at the bottom, which can prevent dust or impurities from entering the high-frequency vibrator 320 and interfering with its vibration operation. The vibration plate 322 is used to accommodate seeds dropped from the seed box 310. The seed box 310 has a cavity for storing seeds, and its bottom has an opening for discharging seeds onto the vibration plate 322; the vibration plate 322 is fixedly connected to a spiral frame approaching the seed box and extending outward, and the spiral frame has a discharge port and a feed port for conveying seeds to the seed meter 330; the bottom of the vibration plate 322 is connected to the upper base 323 The bottom of the upper base 323 is fixedly connected to the armature 324 by bolts; an electromagnet 325 is arranged at intervals below the armature 324, and the electromagnet 325 is fixedly connected to the top of the lower base 326 by a concave block. A plurality of leaf springs 327 are arranged around the electromagnet 325, one end of the leaf spring 327 is fixedly connected to the upper base 323 by bolts, and the other end of the leaf spring 327 is fixedly connected to the lower base 326 by bolts, and is obliquely arranged between the upper base 323 and the lower base 326; the lower base 326 is also fixedly connected to the bottom of the outer cover 321 by screws. When working, the electromagnet 325 generates a periodic electromagnetic excitation force which works together with the leaf spring 327, so that the armature 324 and the vibration disk 322 realize periodic high-frequency vibration of the vertical axis, and the vibration frequency is between 80Hz-120Hz. The best seed supply effect can be achieved within this vibration range; the seeds stored in the seed box 310 fall into the middle of the vibration disk 322, and the seeds are vibrated to move forward along the spiral frame and form a uniform and continuous single-row seed flow.

[0041] In some possible embodiments, Figure 6 As shown, the seed meter 330 includes: an outer shell 331, which has a seed guide tube 3311 and a seed metering tube, and a mounting plate is provided on the surface of the outer shell 331 close to the seed metering tube; an end cover 332, which is connected to the outer shell 331 to form a closed cavity, and a photoelectric sensor is provided on the outer surface of the end cover 332; an impeller 333, which is rotatably installed between the outer shell 331 and the end cover 332, and a plurality of blades are distributed on the surface of the impeller 333, and the ends of the blades away from the surface of the impeller 333 are close to the inner wall of the outer shell 331.

[0042] In this embodiment, a seed guide tube 3311 is provided at the top of the outer shell 331, and the seed guide tube 3311 is connected to the discharge port of the spiral frame on the vibrating plate 322, and is used to input a single row of seed flow into the seed meter 330; a seed metering tube is provided at the bottom of the outer shell 331, and a mounting plate is provided on the surface of the outer shell 331 close to the seed metering tube. The mounting plate is connected to the outer shell 331 by bolts, and the mounting plate is used to mount the seed meter on the top of the mounting base plate 541 by bolts, so as to facilitate blowing seeds into the soil; the end cover 332 is connected to the outer shell 331 by multiple bolts, and forms a A closed cavity is used to accommodate the impeller 333. The end cover 332 is adapted to the opening of the outer shell 331, and a photoelectric sensor is provided on the outer surface of the end cover 332 for accurately recording the sowing quantity. The impeller 333 is rotatably installed between the outer shell 331 and the end cover 332. A through hole is provided in the middle of the impeller 333. A plurality of blades are evenly distributed on the surface of the impeller 333, and the number of blades may be ten. The ends of the blades away from the surface of the impeller 333 approach the inner wall of the outer shell 331. The evenly distributed blades of the impeller 333 divide the seeds sent from the seed guide tube 3311 into several batches as they rotate, so as to achieve uniform sowing.

[0043] In some possible embodiments, the seed rowing tube includes: a first seed rowing tube 3312 connected to the outer shell 331 and communicated with the closed cavity; and a second seed rowing tube 3313 connected to the first seed rowing tube 3312 at an acute angle.

[0044] In this embodiment, the first row of seed tubes 3312 are vertically connected to the outer shell 331 and are communicated with the closed cavity formed by the end cover 332 and the outer shell 331, so as to transport each batch of seeds to the second row of seed tubes 3313; the second row of seed tubes 3313 are connected to the first row of seed tubes 3312 at an acute angle, and the connection is roughly located in the middle of the second row of seed tubes 3313. This inclination angle is conducive to the seeds entering the soil with the help of airflow, thereby improving the seed germination rate.

[0045] In some possible embodiments, Figure 7 As shown, the seed blowing mechanism 400 includes: an air flow tube 3314, connected to the second row seed tube end 3313 away from the soil; a blower 410, fixedly connected to the head 100; a branch air duct 420, connected to the air outlet of the blower 410, the branch air duct 420 has a plurality of branch air outlets; a plurality of hoses 430, each hose 430 is respectively connected to a branch air outlet and the air flow tube 3314.

[0046] In this embodiment, the blower 410 is fixedly connected to the head 100 through a fixed base, and the blower 410 has an air outlet; the air branch pipe 420 is fixedly connected to the air outlet of the blower 410, and the air branch pipe 420 is a cylinder having a cavity for storing air flow, and is fixedly connected to the air branch pipe bottom plate fixed to the head through an iron wire. The air branch pipe 420 has a plurality of air branch ports for dispersing the air flow blown out by the blower 410; a plurality of hoses 430, each hose 430 is connected to a corresponding air branch port, one end of the hose 430 is fixedly connected to the air branch port by bolts, and the other end is fixedly connected to the air flow pipe 3314 by bolts, and the hose 430 is used to transport the dispersed uniform air flow to the air flow pipe 3314 connected to each seeding device 330, so as to provide the air flow required for blowing seeds into the soil. During operation, the airflow from the blower 410 is diverted through the air distribution pipe 420 into the hose 430 to obtain a uniform airflow, thereby reducing the impact force on the material, protecting the seeds from damage, improving the seed survival rate, and at the same time facilitating the improvement of sowing accuracy.

[0047] In some possible embodiments, Figure 8 As shown, the trenching and soil covering mechanism 500 includes: a soil covering bottom plate 510, including an arc plate and a horizontal plate, the arc plate is fixedly connected to the horizontal plate, a plurality of water trench openers 511 are arranged at intervals at the bottom of the horizontal plate, and a seed trench opener 512 is arranged between adjacent water trench openers 511; soil covering side plates 520, which are arranged on both sides of the soil covering bottom plate 510; side fenders 530, which are fixedly connected to the soil covering side plates 520; a plurality of support frames 550, which are evenly distributed on the surface of the soil covering bottom plate 510, and the support frames 550 are arranged on the surface of the soil covering bottom plate 510. Connected to the connecting frame 240; the mounting assembly 540 includes a mounting base plate 541, a mounting side plate 542 and a plurality of support blocks 543, the mounting base plate 541 is respectively fixedly connected to the support frame 550 and the seed metering device 330, the mounting side plates 542 are respectively connected to both sides of the mounting base plate 541, the support blocks 543 are evenly distributed on the surface of the mounting base plate 541 and are connected through the second mounting pipe 232; the transmission device 560 is arranged on both sides of the mounting side plate 542 and is in transmission connection with the impeller 333.

[0048] In this embodiment, the soil covering bottom plate 510 includes an arc-shaped plate and a horizontal plate, and the arc-shaped plate and the horizontal plate can be fixed together by welding. A plurality of ribs are arranged inside the arc-shaped plate, and the arrangement of the ribs can improve the strength of the soil covering bottom plate 510; a plurality of ditch openers 511 are arranged at intervals at the bottom of the horizontal plate, and the number of ditch openers 511 can be set to nine, which needs to be set specifically according to actual needs. The cutting edge curve of the ditch opener 511 is an arc-shaped, and the upper cutting edge curve on the cutting edge is an exponential function curve, and the lower cutting edge curve is a parabolic function curve; there are a plurality of ribs between adjacent ditch openers 511. The furrow opener 512 simulates the actual furrowing for sowing; the soil covering side plates 520 are respectively arranged on both sides of the soil covering bottom plate 510 and fixed to the soil covering bottom plate 510 by welding; the side mud guards 530 are fixedly connected to the soil covering side plates 520 by bolts, and the side mud guards 530 can prevent the mud accumulated at the front end of the soil covering bottom plate 510 from flowing to the two sides of the air-blown rice sowing device, ensuring that the mud will not cover the seeds; a plurality of support frames 550 are evenly welded to the surface of the soil covering bottom plate 510, and the support frames 550 are welded to the connecting frame 240, and are used to fix the furrowing and soil covering mechanism 500 with the suspension mechanism 200, The support frame 550 has a notch adapted to the connecting frame 240, which is used to support and weld the connecting frame 240 to prevent the connecting frame from being uneven; the mounting assembly 540 includes a mounting base plate 541, a mounting side plate 542 and a plurality of support blocks 543, the mounting base plate 541 is respectively connected to the support frame 550 and the seed meter 330, the support frame 550 is welded to the mounting base plate 541, and the seed meter 330 is fixedly connected to the mounting base plate by bolts; the mounting side plates 542 are respectively welded to both sides of the mounting base plate 541, and are connected together by fixing square steel to ensure that the mounting side plates 542 are firmly connected to the mounting base plate The support block 543 is evenly welded to the surface of the mounting bottom plate 541 and connected with the second mounting pipe 232, which is used to fix the mounting frame 230 to prevent the mounting frame 230 from shaking; the transmission device 560 is respectively arranged on both sides of the mounting side plate 542, and the transmission device 560 includes a motor, a coupling and a seeding shaft. The motor is connected to the mounting side plate 542 by bolts, and the seeding shaft is connected with the impeller 333 in the seeding device 330. The two ends of the seeding shaft are respectively connected with the couplings on both sides of the mounting side plate 542. The motor provides power to achieve transmission connection between the transmission device 560 and the impeller 333. When working, the motor provides power to drive the seeding shaft and the impeller 333 to rotate and drive the material to move, prevent blockage during seeding and achieve precise sowing. The number of seeds can be controlled by controlling the motor to control the speed of the impeller 333. The soil-covering bottom plate 510 can effectively reduce the movement resistance, and the side fender 530 can effectively block the splashing mud and water and other impurities during work, so as to adapt to different working environments.

[0049] In some possible embodiments, the spiral frame includes: a bottom plate; an inner plate; an outer plate, which is arranged parallel to the inner plate and abuts against the inner plate after extending outward; the inner plate and the outer plate are respectively connected to both sides of the bottom plate, forming a channel with two open ends with the bottom plate.

[0050] In this embodiment, the outer plate abuts against the inner plate that extends outward, which can prevent the seeds in the seed box from falling outside the vibration plate 322 when falling into the vibration plate 322, resulting in seed loss, which is beneficial to improving sowing efficiency; the spiral frame extends outward to facilitate the delivery of seeds into the seed meter 330, and the inner plate and the outer plate are respectively fixedly connected to both sides of the bottom plate to form a channel with two open ends with the bottom plate, the inner end is the feed port, and the outer end is the discharge port.

[0051] In some possible embodiments, a wind baffle is provided inside the second seed row tube 3313, and the wind baffle is close to the connection between the first seed row tube 3312 and the second seed row tube 3313 away from the soil.

[0052] In this embodiment, the wind baffle is arranged near the connection between the first row of seed tubes 3312 and the second row of seed tubes 3313 away from the soil. This is beneficial for increasing the airflow speed by utilizing the Venturi effect when the airflow enters the airflow tube 3314 and passes through the wind baffle during operation, which is beneficial for driving the seeds to move toward the second row of seed tubes 3313, so that the seeds are blown into the soil at a certain speed and angle. Air-blowing sowing can adapt to different seed sizes, shapes and weights, and can adapt to different types of soil by adjusting the airflow speed and the seed ejection angle.

[0053] When the air-blown precision rice seeding device is in operation, the seeds fall from the seed box 310 into the vibration plate 322, and the high-frequency vibrator 320 generates a periodic electromagnetic excitation force through the pulse electromagnet 325 and the leaf spring 327, so that the armature 324 and the vibration plate 322 vibrate at high frequency along the vertical axis; the seeds are driven to rise along the spiral frame on the vibration plate 322, and the seeds form a uniform and continuous single-row seed flow under the action of vibration; the seed flow enters the seed guide pipe 3311 through the discharge port and then falls into the seed meter 330, and the impeller 333 of the seed meter 330 is driven to rotate by the transmission 560, and the impeller rotation divides the fallen seeds into several batches, so as to achieve accurate seeding and effectively prevent blockage during seeding; the seeds fall from the first seed tube 3312, and the photoelectric sensor located on the end cover 332 of the seed meter 330 can accurately count the number of seeds sown. At the same time, the blower 410 generates airflow, which is divided by the air distribution pipe 420 to obtain uniform airflow. The seeds are transported to the seeding tube through the hose 430. The second seeding tube 3313 is provided with a wind-blocking piece, which effectively utilizes the Venturi effect to increase the airflow speed in the second seeding tube 3313, blows the seeds into the soil, and then uses the dead weight of the soil to cover the seeds immediately after one hole of sowing is completed, which can greatly increase the emergence rate of the seeds. The vibration frequency of the high-frequency vibrator 320 and the rotation speed of the impeller 333 can also be adjusted to make the seeding device 330 drop different numbers of seeds, so as to achieve precision sowing. The principle of high-frequency vibration and pulse airflow ejection is adopted to realize the precision delivery and sowing of seeds, and the seeding accuracy is 3 to 11 seeds. The seeds are ejected into the mud by airflow, and the mud depth is in the range of 3 to 10 mm. The air-blown precision sowing device can adapt to seeds with different length-width ratios.

[0054] In the present application, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. The term "plurality" refers to two or more, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In this application, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air-blowing rice precision seeding device, characterized in that: include: Nose; A suspension mechanism connected to the end of the machine head; A plurality of seed supply institutions, each of which comprises: A seed box, fixedly connected to the suspension mechanism; A high-frequency vibrator is located below the seed box, the high-frequency vibrator has a spiral frame approaching the seed box and extending outward, the spiral frame has a feed inlet and a discharge inlet, and is used to divert the seeds in the seed box into a single-row seed flow; A seed meter connected to the high-frequency vibrator, the seed meter is used to receive the single-row seed flow and distribute several batches for seeding to control the sowing quantity; A seed blowing mechanism connected to the seed metering device, the seed blowing mechanism is used to blow the discharged seeds into the soil; The trenching and soil covering mechanism is connected with the suspension mechanism.

2. The air-blowing rice precision seeding device according to claim 1, characterized in that: The suspension mechanism comprises: A hanging joint, hangingly connected to the machine head; A connecting spindle fixedly connected to the hanging joint; A bearing, sleeved on the connecting spindle; A connecting frame, a bearing seat is fixedly mounted on a surface close to the bearing, and the connecting frame is connected to the bearing through the bearing seat; A mounting frame connected to the connecting frame and used to fix the seed box; A plurality of balance springs are symmetrically distributed on both sides of the hanging joint, and the balance springs are connected to the connecting frame and the hanging joint.

3. The air-blowing rice precision seeding device according to claim 2, characterized in that: The mounting frame comprises: Multiple fixing plates; Screws, respectively connecting the fixing plate and the connecting frame; A first mounting tube, passing through the plurality of fixing plates and fixedly connected to the fixing plates; The second mounting tube is arranged in parallel with the first mounting tube, and the second mounting tube penetrates through the plurality of fixing plates and is fixedly connected to the fixing plates.

4. The air-blowing precision rice seeding device according to any one of claims 1 to 3, characterized in that: The high frequency vibrator comprises: Outer cover; a vibration plate, the vibration plate having the spiral frame; An upper base, fixedly connected to the vibration plate; An armature fixedly connected to the upper base; An electromagnet, arranged relative to the armature and spaced apart from each other, for generating a periodic electromagnetic exciting force; A lower base, fixedly connected to the electromagnet and the outer cover; A plurality of leaf springs are arranged around the electromagnet and are respectively fixedly connected to the upper base and the lower base.

5. The air-blowing precision rice seeding device according to claim 4, characterized in that: The seed metering device comprises: The outer shell has a seed guide tube and a seed discharge tube, and a mounting piece is provided on the surface of the outer shell close to the seed discharge tube; An end cover is connected to the outer shell to form a closed cavity, and a photoelectric sensor is provided on the outer surface of the end cover; The impeller is rotatably mounted between the outer shell and the end cover. A plurality of blades are distributed on the surface of the impeller, and the ends of the blades away from the impeller surface are close to the inner wall of the outer shell.

6. The air-blowing precision rice seeding device according to claim 5, characterized in that: The seed discharging pipe comprises: A first row of seed tubes connected to the outer shell and in communication with the closed cavity; The second row of seed tubes is connected to the first row of seed tubes at an acute angle.

7. The air-blowing precision rice seeding device according to claim 6, characterized in that: The seed blowing mechanism comprises: An airflow pipe connected to the end of the second row of seed pipes away from the soil; A blower, fixedly connected to the machine head; An air distribution pipe connected to the air outlet of the blower, the air distribution pipe having a plurality of air distribution outlets; A plurality of hoses, each hose is respectively connected to the air outlet and the air flow pipe.

8. The air-blowing rice precision seeding device according to claim 7, characterized in that: The ditching and soil covering mechanism comprises: The soil covering bottom plate comprises an arc-shaped plate and a horizontal plate, wherein the arc-shaped plate is fixedly connected to the horizontal plate, a plurality of water ditch openers are arranged at intervals at the bottom of the horizontal plate, and a seed ditch opener is arranged between adjacent water ditch openers; Soil-covering side plates are arranged on both sides of the soil-covering bottom plate; Side fenders, fixedly connected to the soil-covering side panels; A plurality of support frames are evenly distributed on the surface of the soil covering base plate, and the support frames are connected to the connecting frames; The mounting assembly comprises a mounting base plate, a mounting side plate and a plurality of support blocks, wherein the mounting base plate is fixedly connected to the support frame and the seed metering device respectively, the mounting side plates are respectively connected to both sides of the mounting base plate, and the support blocks are evenly distributed on the surface of the mounting base plate and are connected through the second mounting pipe; The transmission device is arranged on both sides of the mounting side plate and is connected to the impeller in a transmission manner.

9. The air-blowing precision rice seeding device according to any one of claims 1 to 3, characterized in that: The spiral framework comprises: Base plate; inner side panels; An outer plate is arranged parallel to the inner plate and abuts against the inner plate after being extended outward; The inner plate and the outer plate are respectively connected to two sides of the bottom plate, and form a channel with two open ends with the bottom plate.

10. The air-blowing precision rice seeding device according to claim 7, characterized in that: A wind blocking piece is arranged inside the second row seed tube, and the wind blocking piece is close to the connection between the first row seed tube and the second row seed tube away from the soil.

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