A precision seeder for soybean cultivation

Abstract

The present invention discloses a precision seeding machine for soybean cultivation, which relates to the technical field of grain sowing. The precision seeding machine includes a movable frame, a material preparation hopper, and a lower sowing guide cylinder; further includes a cut-off switching mechanism, a blocking component, and a power component. The cut-off switching mechanism includes an opening and closing cutting component and a rotating component. The rotating component can drive the opening and closing cutting component to switch the connection state and the closed state between the lower sowing guide cylinder and the upper sowing guide cylinder by rotating. When the connection state between the lower sowing guide cylinder and the upper sowing guide cylinder is switched to the closed state, the bottoms of the three blocking components move away from each other and open the bottom port of the lower sowing guide cylinder. Before the closed state between the lower sowing guide cylinder and the upper sowing guide cylinder is switched to the connection state, the blocking component rotates, and the bottoms of the three blocking components converge at the bottom port of the lower sowing guide cylinder and close the bottom port of the lower sowing guide cylinder. The present invention has a simple structure, equal amounts of sowing seeds in pits, and uniform sowing. It has high sowing efficiency, is easy to operate, and has strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of grain sowing, in particular to a precision seeder for soybean cultivation. Background Art

[0002] Soybeans are most commonly used to make various soy products, extract soybean oil, brew soy sauce, and extract protein. They are widely cultivated and consumed because of their high nutritional value and ease of digestion and absorption. Precision seed drills for soybean cultivation are highly efficient and precise agricultural machinery designed to improve the efficiency and quality of soybean cultivation. This machine plays a crucial role in the soybean cultivation process, significantly enhancing both accuracy and yield by precisely controlling seeding position, depth, and seed spacing.

[0003] The sowing method of the seeder used for soybean sowing is: an opening and closing mechanism is used to drive the opening and closing of the bottom of the discharge barrel. After the bottom port of the discharge barrel is opened, the soybean seeds in the storage device fall into the sowing pit through the discharge barrel; the length of time the bottom port of the discharge barrel is open is controlled by the opening and closing mechanism. Generally, the interval time for opening the bottom port of the discharge barrel is the same each time, so the position spacing of the soybean seeds falling each time is equal; however, the moving speed of the seeder and the position spacing of the pit excavation are prone to deviations, which may cause the soybean seeds to fall at an inaccurate position; at the same time, after the bottom port of the discharge barrel is opened, the falling speed of the soybean seeds will change due to the weight of the soybeans in the storage device. Because the soybean seeds fall synchronously, the friction between each other and the friction obstruction between the inner wall of the discharge barrel will affect the falling speed of the soybean seeds, which can easily lead to deviations in the amount of seeds in each pit. Summary of the Invention

[0004] The object of the present invention is to provide a precision seeder for soybean cultivation to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The discharging opening that stirs cage connects with the delivery chute charging aperture, and the delivery chute discharging opening is erected at bin top, bin be arranged on the supporting tractor of the present invention on the supporting tractor, and the delivery chute discharging opening is erected at bin top, bin be arranged on the supporting tractor of the present invention on the supporting tractor. Before the closed state between the lower sowing guide cylinder and the upper sowing guide cylinder is switched to the connected state, the blocking assembly rotates, and the bottom ends of the three blocking assemblies converge at the bottom port of the lower sowing guide cylinder and close the bottom port of the lower sowing guide cylinder.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional scheme: the opening and closing cutoff assembly includes a lower supporting ring, an upper annular rod and a plurality of partition movable plates, the lower supporting ring is arranged at the bottom port of the lower sowing guide cylinder and a plurality of circumferentially distributed partition shafts are provided near the edge of the upper end surface of the lower supporting ring, the upper annular rod is fixed to the outer wall of the upper sowing guide cylinder, the two ends of the partition shaft are respectively rotatably connected to the upper annular rod and the partition shaft, a plurality of partition movable plates are circumferentially distributed and arranged on the upper side of the lower supporting ring and a corner of the partition movable plate is fixedly connected to the corresponding partition shaft, the plurality of partition movable plates can be spliced ​​into a circular plate for closing the bottom port of the upper sowing guide cylinder, the plurality of partition movable plates open and close the bottom port of the upper sowing guide cylinder by rotating around the axis of the partition shaft, and the plurality of partition shafts are also connected to the rotating component.

[0009] In an optional scheme: a partition gear part is provided on each partition shaft, and the rotating part includes a rotating sleeve, a radial connecting part and a plurality of inner racks, the rotating sleeve is rotatably arranged on the edge of the lower support ring and a plurality of avoidance gaps are opened on the outer wall of the rotating sleeve, and the avoidance gaps correspond to the radial connecting part; one end of the radial connecting part is fixedly connected to the outer wall of the rotating sleeve and the other end is connected to the power component, a plurality of inner racks are circumferentially distributed on the inner wall of the radial connecting part and the plurality of inner racks are respectively engaged with the plurality of partition gear parts; a plurality of arc protrusions are also provided on the outer wall of the rotating sleeve, the arc protrusions correspond to the top of the blocking component and the arc protrusions can drag the top of the blocking component outward.

[0010] In an optional solution: the blocking assembly includes a blocking lever arm and a fan-shaped blocking plate, the middle part of the blocking lever arm is rotatably connected to the outer wall of the lower sowing guide cylinder through a support and a blocking spring is arranged between the blocking lever arm and the lower sowing guide cylinder, the fan-shaped blocking plate is arranged at the bottom of the blocking lever arm and multiple fan-shaped blocking plates can be spliced ​​into a circular plate; the top of the blocking lever arm is provided with a supporting roller that rotates with it and the outer wall of the supporting roller is in rolling contact with the side of the arc protrusion.

[0011] In an optional solution: a lower extension bar is also provided at the bottom of the fan-shaped blocking plate, the lower extension bar can be elastically deformed and has a deformation sensor on its surface; the deformation sensor can generate an induction signal after the lower extension bar is deformed and restores its shape; the deformation sensor is electrically connected to the power component.

[0012] In an optional scheme: the radial connecting part is a radial bar frame structure, an outer extension frame is provided on the side of the movable frame and the power assembly includes a power screw part, a servo motor and a toggle rod, the power screw part is rotatably arranged on the outer extension frame and a spiral seat that spirally cooperates with it is provided on the power screw part, the spiral seat is connected to the outer extension frame and slides along the axial direction of the power screw part on the outer extension frame; the servo motor is provided on the outer extension frame and the output end of the servo motor is rotatably connected to the end of the power screw part; the top of the toggle rod is fixedly connected to the spiral seat, and the bottom of the toggle rod extends to the inside of the radial connecting part.

[0013] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is, for example, that two guide wheels are connected along the longitudinal direction of the sliding panel, and the guide wheels are connected along the interlocking structure to form a round shank and a gear.

[0014] In an optional solution: the one-way transmission part includes a transmission ring and a plurality of transmission teeth arranged on the side of the horizontal movable rod, the transmission ring is fixed on the outer wall of the sleeve part and two groups of arc-shaped pushing parts are arranged on the outer wall of the transmission ring, the arc-shaped pushing parts are fixedly connected to the outer wall of the transmission ring and the arc-shaped pushing parts can produce elastic deformation when the plate surface is under pressure; one side of the transmission tooth body is an inclined surface and the other side is a straight surface.

[0015] In an optional solution: the bottom of the covering rod is provided with a sleeve portion that slides with the covering rod and the covering plate is fixed to the bottom of the sleeve portion; a pulling link with one end hinged to the sleeve portion is provided on the top side wall of the sleeve portion, and the other end of the pulling link is hinged to the mobile frame and the connection between the pulling link and the mobile frame is lower in height than the connection between the pulling link and the sleeve portion.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The bottom ports of the upper sowing guide cylinder and the lower sowing guide cylinder cooperate with each other when switching between the open and closed states, so that the same amount of soybean seeds can be sown each time, and the seed weight requirements for soybean sowing can be met, which greatly improves the accuracy and yield of soybean planting;

[0018] 2. The soybean seeds sown in the present invention can automatically fall from the bottom port of the lower sowing guide cylinder and accurately fall into the planting pit, avoiding the seeds bouncing on the ground during sowing, achieving rapid sowing and improving sowing efficiency;

[0019] 3. The present invention has a simple structure, the sowing seeds in the pits are of the same weight and are sown evenly, the sowing efficiency is high, the operation is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1The figure is a schematic diagram of the overall structure of the precision seeding machine in one embodiment of the present invention.

[0021] Figure 2 The figure is a structural schematic diagram of the precision seeder without the movable frame in one embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the structure of the cut-off switching mechanism and the blocking component in one embodiment of the present invention.

[0023] Figure 4 This is a structural schematic diagram of an opening and closing truncation component from one perspective in one embodiment of the present invention.

[0024] Figure 5 This is a schematic structural diagram of an opening and closing truncation component from another perspective in an embodiment of the present invention.

[0025] Figure 6 Schematic diagram of the structure of the rotating component in one embodiment of the present invention.

[0026] Figure 7 Schematic diagram of the soil covering mechanism structure in one embodiment of the present invention.

[0027] Figure 8 for Figure 7 Enlarged structural diagram at point A in the middle.

[0028] Figure numerals: movable frame 100, outer extension frame 110, preparation hopper 200, upper sowing guide cylinder 210, lower sowing guide cylinder 300, blocking spring 310, cut-off switching mechanism 400, opening and closing cut-off assembly 410, lower support ring 411, partition movable plate 412, upper annular rod 413, partition shaft 414, partition gear part 415, rotating component 420, rotating sleeve 421, radial connecting part 422, inner rack 423, avoidance gap 424, arc protrusion 425, blocking assembly 500, support 510, blocking lever arm 520, fan-shaped blocking plate 530, bearing roller 540, lower extension bar 550, power assembly 600, power screw part 610, servo motor 620, spiral seat 630, toggle rod 640, covering mechanism 700, covering rod 710, horizontal movable rod 720, transmission gear body 721, covering plate 730, sleeve part 740, sliding seat 750, pulling connecting rod 760, vertical connecting rod 770, sleeve part 800, outer connecting rod 810, transmission ring 900, arc-shaped pushing part 910. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. In the drawings or descriptions, similar or identical parts are denoted by the same reference numerals, and in actual applications, the shape, thickness, or height of each component may be enlarged or reduced. The various embodiments listed in the present invention are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0030] In one embodiment, Figure 1-Figure 3As shown, a precision seeding machine for soybean cultivation includes a mobile frame 100, a preparation hopper 200 and a lower sowing guide cylinder 300, wherein the preparation hopper 200 is arranged on the top of the mobile frame 100 and an upper sowing guide cylinder 210 is fixedly installed at the bottom of the preparation hopper 200, and the lower sowing guide cylinder 300 is arranged at the bottom of the upper sowing guide cylinder 210 and is connected thereto; further comprising a cut-off switching mechanism 400, a blocking component 500 and a power component 600, wherein the cut-off switching mechanism 400 is arranged between the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210 and the cut-off switching mechanism 400 includes an opening and closing cut-off component 410 and a rotating part The opening and closing cut-off assembly 410 is installed between the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210, and the rotating component 420 is rotatably arranged on the outside of the rotating component 420. The rotating component 420 can drive the opening and closing cut-off assembly 410 to switch the connection state and the closed state between the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210 by rotating; the power assembly 600 is provided on the mobile frame 100, and the power assembly 600 is connected to the rotating component 420 and can drive the rotating component 420 to rotate relative to the opening and closing cut-off assembly 410; the blocking assembly 500 is three and circumferentially distributed on the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210. The outer side of the sowing guide cylinder 300, the middle part of the blocking component 500 is rotatably connected to the outer wall of the lower sowing guide cylinder 300 in an elastic damping manner, the top of the blocking component 500 extends to the outer side of the rotating component 420 and the rotating rotating component 420 can push the top of the blocking component 500 laterally, and the bottom of the blocking component 500 extends to the bottom of the lower sowing guide cylinder 300. In the initial free state, the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210 are in a connected state, and the bottom ends of the three blocking components 500 are in contact at the bottom of the lower sowing guide cylinder 300 and close the bottom port of the lower sowing guide cylinder 300; when When the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210 are switched from a connected state to a closed state, the cut-off switching mechanism 400 acts on the three blocking components 500 and the three blocking components 500 rotate around the connection with the outer wall of the lower sowing guide cylinder 300, and the bottoms of the three blocking components 500 are separated from each other and the bottom port of the lower sowing guide cylinder 300 is opened; before the closed state between the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210 is switched to a connected state, the blocking component 500 rotates, and the bottoms of the three blocking components 500 converge at the bottom port of the lower sowing guide cylinder 300 and close the bottom port of the lower sowing guide cylinder 300.

[0031] When the seed drill 100 is in operation, the seed drill 100 is in operation, and the seed drill 100 is in operation. When the seed drill 100 is in operation, the seed drill 100 is in operation, and the seed drill 100 is in operation. When the seed drill 100 is in operation, the seed drill 100 is in operation, and the seed drill 100 is in operation. When the seed drill 100 is in operation, the seed drill 100 is in operation, and the seed drill 100 is in operation. The connection of the outer wall of the guide cylinder 300 rotates, and the bottom ends of the three blocking components 500 move away from each other, so that the bottom port of the lower sowing guide cylinder 300 is opened and the soybeans in the lower sowing guide cylinder 300 fall and fall into the planting pit; finally, the power component 600 drives the rotating component 420 to reverse, and the rotating component 420 first causes the three blocking components 500 to rotate in the opposite direction, and the bottom ends of the three blocking components 500 converge at the bottom port of the lower sowing guide cylinder 300 and close the bottom port of the lower sowing guide cylinder 300, and the rotating component 420 acts on the opening and closing cutoff component 410 and the opening and closing cutoff component 410 switches the closed state between the upper sowing guide cylinder 210 and the lower sowing guide cylinder 300 to a connected state, so that the soybean seeds to be sown inside the upper sowing guide cylinder 210 fall into the lower sowing guide cylinder 300 and fill the lower sowing guide cylinder 300 for the next sowing, so that the amount of soybean seeds sown each time is the same, so as to meet the requirements of accurate sowing, convenient operation and high sowing efficiency.

[0032] In one embodiment, Figure 2-Figure 5As shown, the opening and closing cut-off assembly 410 includes a lower supporting ring 411, an upper annular rod 413 and a plurality of partition movable plates 412. The lower supporting ring 411 is arranged at the bottom port of the lower sowing guide cylinder 300 and a plurality of circumferentially distributed partition shafts 414 are provided near the edge of the upper end surface of the lower supporting ring 411. The upper annular rod 413 is fixed to the outer wall of the upper sowing guide cylinder 210. The two ends of the partition shaft 414 are rotatably connected to the upper annular rod 413 and the partition shaft 414 respectively. A plurality of partition movable plates 412 are circumferentially distributed on the upper side of the lower supporting ring 411 and one side corner of the partition movable plate 412 is aligned with the corresponding partition shaft 41 4 is fixedly connected, and multiple partition movable plates 412 can be spliced ​​into a circular plate for closing the bottom end of the upper sowing guide cylinder 210. The multiple partition movable plates 412 rotate around the axis of the partition rotating shaft 414 to open and close the bottom end of the upper sowing guide cylinder 210. The multiple partition rotating shafts 414 are also connected to the rotating component 420. During actual application of the embodiment of the present invention, the rotating rotating component 420 acts on the multiple partition rotating shafts 414 and rotates them. The rotating partition rotating shafts 414 drive the partition movable plates 412 to rotate, so that the multiple partition movable plates 412 can realize the opening and closing of the bottom of the upper sowing guide cylinder 210 by rotating.

[0033] In one embodiment, Figure 2-Figure 6 As shown, each partition shaft 414 is provided with a partition gear portion 415, and the rotating component 420 includes a rotating sleeve 421, a radial connecting portion 422 and a plurality of inner racks 423, the rotating sleeve 421 is rotatably arranged on the edge of the lower support ring 411 and a plurality of avoidance notches 424 are provided on the outer wall of the rotating sleeve 421, and the avoidance notches 424 correspond to the radial connecting portion 422; one end of the radial connecting portion 422 is fixedly connected to the outer wall of the rotating sleeve 421 and the other end is connected to the power component 600, a plurality of inner racks 423 are circumferentially distributed on the inner wall of the radial connecting portion 422 and the plurality of inner racks 423 are respectively meshed with the plurality of partition gear portions 415; a plurality of arc protrusions 425 are also provided on the outer wall of the rotating sleeve 421, and the arc protrusions 425 correspond to the top of the blocking component 500 and the arc protrusions 425 can drag the top of the blocking component 500 outward; in the actual application process of the embodiment of the present invention, the power component 600 acts on the radial connection part 422 and drives the rotating sleeve 421 to rotate around the opening and closing cutting component 410 through the radial connection part 422. The rotating radial connection part 422 drives the partition shaft 414 to rotate through the engagement of multiple inner racks 423 with the partition gear part 415. The partition shaft 414 drives the partition movable plate 412 to rotate. The partition movable plate 412 rotating outward can pass through the avoidance gap 424, thereby avoiding interference between the partition movable plate 412 rotating outward and the inner wall of the rotating sleeve 421. At the same time, the rotating rotating sleeve 421 also acts on the top of the blocking component 500 through the arc protrusion 425 to make the blocking component 500 rotate around the outer wall of it and the lower sowing guide cylinder 300.

[0034] In one embodiment, Figure 2-Figure 6 As shown, the blocking assembly 500 includes a blocking lever arm 520 and a fan-shaped blocking plate 530, the middle portion of the blocking lever arm 520 is rotatably connected to the outer wall of the lower sowing guide cylinder 300 through the support 510, and a blocking spring 310 is provided between the blocking lever arm 520 and the lower sowing guide cylinder 300, the fan-shaped blocking plate 530 is provided at the bottom of the blocking lever arm 520, and multiple fan-shaped blocking plates 530 can be spliced ​​into a circular plate; the top of the blocking lever arm 520 is provided with a bearing roller 540 that rotates therewith, and the outer wall of the bearing roller 540 is in rolling contact with the side of the arc protrusion 425; in actual application of the embodiment of the present invention, when the rotating sleeve 421 rotates and causes the multiple partition movable plates 412 to rotate toward the center of the lower support ring 411, the arc protrusion 425 rotates with the rotating sleeve 421 and pushes the bearing roller 540 laterally, and the bearing roller 540 drives the blocking lever arm 52 0 rotates around the support 510, so that the fan-shaped blocking plate 530 gradually moves away from the bottom of the lower sowing guide cylinder 300, and when the multiple partition movable plates 412 are fully combined, the multiple fan-shaped blocking plates 530 move away from and open the bottom port of the lower sowing guide cylinder 300, allowing the soybean seeds in the lower sowing guide cylinder 300 to fall into the planting pit; when the rotating sleeve 421 rotates, the outer wall of the arc-shaped protrusion 425 no longer exerts a force on the bearing roller 540. Under the action of the rebound force of the blocking spring 310, the blocking lever arm 520 rotates and the bottom of the fan-shaped blocking plate 530 gradually converges at the bottom port of the lower sowing guide cylinder 300, until the multiple fan-shaped blocking plates 530 converge and can prevent the soybean seeds from passing through, the partition movable plate 412 fully opens the bottom port of the upper sowing guide cylinder 210, so that the soybean seeds inside the upper sowing guide cylinder 210 fall into the lower sowing guide cylinder 300.

[0035] In one embodiment, Figure 2 and Figure 3 As shown, a lower extension bar 550 is further provided at the bottom of the fan-shaped blocking plate 530. The lower extension bar 550 can be elastically deformed and has a deformation sensor on its surface; the deformation sensor can generate an induction signal after the lower extension bar 550 is deformed and restores its shape; the deformation sensor is electrically connected to the power component 600; in the actual application process of the embodiment of the present invention, the entire device moves and the bottom of the lower extension bar 550 is deformed due to contact with the ridge and pressure. When the lower extension bar 550 moves to the planting pit, the lower extension bar 550 is located on the upper side of the pit and is separated from the ground, so that the lower extension bar 550 returns to its original state, and the deformation sensor on the surface of the lower extension bar 550 generates an induction signal, and the power component 600 starts working and sowing soybean seeds.

[0036] In one embodiment, Figure 2 and Figure 6As shown, the radial connection portion 422 is a radial bar frame structure, the side of the mobile frame 100 is provided with an outer extension frame 110 and the power assembly 600 includes a power screw part 610, a servo motor 620 and a toggle rod 640, the power screw part 610 is rotatably provided on the outer extension frame 110 and the power screw part 610 is provided with a spiral seat 630 that is spirally matched with it, the spiral seat 630 is connected to the outer extension frame 110 and slides along the axial direction of the power screw part 610 on the outer extension frame 110; the servo motor 620 is provided on the outer extension frame 110 and the output end of the servo motor 620 is rotatably connected to the end of the power screw part 610; the toggle rod 640 The top is fixedly connected to the spiral seat 630, and the bottom of the toggle rod 640 extends to the inside of the radial connection part 422; in the actual application process of the embodiment of the present invention, the servo motor 620 drives the power screw part 610 to rotate, and the rotating power screw part 610 is spirally matched with the spiral seat 630 to make the spiral seat 630 move axially along the power screw part 610 on the outer extension frame 110, and the spiral seat 630 drives the toggle rod 640 to move and the toggle rod 640 to toggle the radial connection part 422, thereby causing the rotating sleeve 421 to rotate; wherein, the servo motor 620 is electrically connected to the deformation sensor on the lower extension bar 550, and the deformation sensor can control the working state of the servo motor 620.

[0037] In one embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 8As shown, the outer wall of the upper sowing guide cylinder 210 is provided with a sleeve portion 800 that rotates therewith, and the outer wall of the sleeve portion 800 is fixedly connected to the upper edge of the rotating component 420 through a plurality of external connecting rods 810. Two covering mechanisms 700 are provided on the mobile frame 100, and the two covering mechanisms 700 are symmetrically arranged on both sides of the lower sowing guide cylinder 300. The covering mechanism 700 includes a covering rod 710, a covering plate 730 and a horizontal movable rod 720. The top of the covering rod 710 is rotatably connected to the top of the mobile frame 100 through a spring bearing and the middle of the covering rod 710 is provided with a The sliding seat 750 slides, and the horizontal movable rod 720 is provided with a vertical connecting rod 770 and the top of the vertical connecting rod 770 is slidably connected to the top of the mobile frame 100. One end of the horizontal movable rod 720 is hinged to the sliding seat 750 and the other end is connected to the sleeve part 800 through a one-way transmission part. The covering plate 730 is provided at the bottom of the covering rod 710; when the opening and closing cutoff assembly 410 switches the closed state between the upper sowing guide cylinder 210 and the lower sowing guide cylinder 300 to a connected state, the sleeve part 800 acts on the horizontal movable rod 720 through the one-way transmission part and makes the horizontal movable rod 720 move toward the far When the upper seeding guide cylinder 210 and the lower seeding guide cylinder 300 are in the closed state, the rotating rotating part 420 drives the sleeve part 800 to rotate and the sleeve part 800 does not act on the horizontal movable rod 720. Under the elastic force of the spring bearing, the covering rod 710 and the covering plate 730 move back to the initial position and always remain in a stationary state. When the opening and closing cutoff component 410 switches the closed state between the upper seeding guide cylinder 210 and the lower seeding guide cylinder 300 to In the connected state, the sleeve portion 800 acts on the horizontal movable rod 720 through the one-way transmission portion and causes the horizontal movable rod 720 to move in the direction away from the covering rod 710, and then the covering rod 710 rotates around the connection with the movable frame 100 and the covering plate 730 rotates with the covering rod 710. The rotating covering plate 730 can move the soil on the side of the planting pit toward the planting pit, thereby covering the planting pit with soil, so as to achieve covering and burying of soybean seeds after sowing; wherein, the clockwork bearing is a device in which a clockwork is installed between the inner ring and the outer ring of the bearing, so that elastic resistance is generated when the inner ring and the outer ring of the bearing rotate relative to each other.

[0038] In one embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 8As shown, the one-way transmission part includes a transmission ring 900 and a plurality of transmission teeth 721 provided on the side of the horizontal movable rod 720. The transmission ring 900 is fixed on the outer wall of the sleeve part 800 and two groups of arc-shaped push parts 910 are provided on the outer wall of the transmission ring 900. The arc-shaped push parts 910 are fixedly connected to the outer wall of the transmission ring 900 and can generate elastic deformation when the plate surface is pressurized; one side of the transmission tooth 721 is an inclined surface and the other side is a straight surface; when the transmission ring 900 is fixed to the outer wall of the sleeve part 800, the two groups of arc-shaped push parts 910 are provided on the outer wall of the transmission ring 900. 00As the sleeve portion 800 rotates and the plate surface of the arc-shaped pushing portion 910 contacts the inclined surface of the transmission tooth body 721, the rotating transmission ring 900 and the arc-shaped pushing portion 910 will not drive the horizontal movable rod 720 to move; when the end of the arc-shaped pushing portion 910 contacts the straight surface of the transmission tooth body 721, the ends of multiple rotating arc-shaped pushing portions 910 are located in the gap between the two transmission tooth bodies 721 and drag the straight surface of the transmission tooth body 721, thereby causing the horizontal movable rod 720 to move laterally.

[0039] In one embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 8 As shown, the bottom of the covering rod 710 is provided with a sleeve portion 740 that slides with it and the covering plate 730 is fixed to the bottom of the sleeve portion 740; a pulling link 760 with one end hinged to it is provided on the top side wall of the sleeve portion 740, and the other end of the pulling link 760 is hinged to the movable frame 100, and the connection between the pulling link 760 and the movable frame 100 is lower in height than the connection between the pulling link 760 and the sleeve portion 740; in actual application of the embodiment of the present invention, when the covering rod 710 rotates around its connection with the outer extension frame 110 toward the lower sowing guide cylinder 300, the sleeve portion 740 moves upward under the traction of the pulling link 760, and the covering plate 730 moves downward with the sleeve portion 740 and penetrates into the soil, so that the covering plate 730 can move the soil to the planting pit.

[0040] The above embodiment provides a precision seeder for soybean cultivation, wherein, in the initial state, the upper sowing guide cylinder 210 and the lower sowing guide cylinder 300 are in a connected state due to the opening and closing cut-off component 410 and the bottom of the multiple blocking components 500 close the bottom port of the lower sowing guide cylinder 300, so that the interior of the lower sowing guide cylinder 300 and the upper sowing guide cylinder 210 are filled with soybean seeds to be sown; after the entire seeder moves to the position of the sowing pit, the lower sowing guide cylinder 300 is directly above the sowing pit, the power component 600 starts to work and drives the rotating component 420 to rotate relative to the opening and closing cut-off component 410, the rotating rotating component 420 acts on the opening and closing cut-off component 410, and the opening and closing cut-off component 410 switches the connection state between the upper sowing guide cylinder 210 and the lower sowing guide cylinder 300 to a closed state, the rotating component 420 that continues to rotate acts on the blocking component 500 and the three blocking components 500 are around the outer wall of the lower sowing guide cylinder 300 The connection of the three blocking components 500 is rotated, and the bottom ends of the three blocking components 500 are all away from each other, so that the bottom port of the lower sowing guide cylinder 300 is opened and the soybeans in the lower sowing guide cylinder 300 fall and fall into the planting pit; finally, the power component 600 drives the rotating component 420 to reverse, and the rotating component 420 first causes the three blocking components 500 to rotate in the opposite direction, and the bottom ends of the three blocking components 500 converge at the bottom port of the lower sowing guide cylinder 300 and close the bottom port of the lower sowing guide cylinder 300, and the rotating component 420 acts on the opening and closing cutoff component 410 again, and the opening and closing cutoff component 410 switches the closed state between the upper sowing guide cylinder 210 and the lower sowing guide cylinder 300 to a connected state, so that the soybean seeds to be sown inside the upper sowing guide cylinder 210 fall into the lower sowing guide cylinder 300 and fill the lower sowing guide cylinder 300 for the next sowing, so that the amount of soybean seeds sown each time is the same, so as to meet the requirements of accurate sowing, convenient operation and high sowing efficiency.

[0041] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A precision seeding machine for soybean cultivation, comprising a mobile frame, a preparation hopper and a lower seeding guide cylinder, wherein the preparation hopper is arranged on the top of the mobile frame and an upper seeding guide cylinder is fixedly installed at the bottom of the preparation hopper, and the lower seeding guide cylinder is arranged at the bottom of the upper seeding guide cylinder and is connected thereto; characterized in that It also includes a cut-off switching mechanism, a blocking assembly, and a power assembly; The cut-off switching mechanism is provided between the lower sowing guide cylinder and the upper sowing guide cylinder and the cut-off switching mechanism includes an opening and closing cut-off component and a rotating component; The opening and closing cut-off assembly is installed between the lower sowing guide cylinder and the upper sowing guide cylinder, and the rotating part is rotatably arranged on the outside of the lower sowing guide cylinder. The rotating part can drive the opening and closing cut-off assembly to switch the connection state and the closed state between the lower sowing guide cylinder and the upper sowing guide cylinder by rotating. The power assembly is arranged on the mobile frame, is connected to the rotating component and can drive the rotating component to rotate relative to the opening and closing cut-off component; There are three blocking components and they are circumferentially distributed on the outside of the lower sowing guide cylinder. The middle part of the blocking component is rotatably connected to the outer wall of the lower sowing guide cylinder in an elastic damping manner. The top of the blocking component extends to the outside of the rotating component and the rotating rotating component can push the top of the blocking component laterally. The bottom of the blocking component extends to the bottom of the lower sowing guide cylinder. In the initial free state, the lower sowing guide cylinder and the upper sowing guide cylinder are in a connected state, and the bottom ends of the three blocking components are in contact with the bottom of the lower sowing guide cylinder and close the bottom port of the lower sowing guide cylinder; When the lower sowing guide cylinder and the upper sowing guide cylinder are switched from a connected state to a closed state, the cut-off switching mechanism acts on the three blocking components and the three blocking components rotate around the connection with the outer wall of the lower sowing guide cylinder, and the bottoms of the three blocking components move away from each other and open the bottom port of the lower sowing guide cylinder; Before the closed state between the lower sowing guide cylinder and the upper sowing guide cylinder is switched to the connected state, the blocking assembly rotates, and the bottoms of the three blocking assemblies converge at the bottom port of the lower sowing guide cylinder and close the bottom port of the lower sowing guide cylinder; The blocking assembly includes a blocking lever arm and a fan-shaped blocking plate; The middle part of the blocking lever arm is rotatably connected to the outer wall of the lower sowing guide cylinder through a support, and a blocking spring is provided between the blocking lever arm and the lower sowing guide cylinder. The fan-shaped blocking plate is provided at the bottom of the blocking lever arm, and multiple fan-shaped blocking plates can be spliced ​​into a circular plate. A lower extension bar is also provided at the bottom of the fan-shaped blocking plate. The lower extension bar can be elastically deformed and has a deformation sensor on its surface; the deformation sensor can generate an induction signal after the lower extension bar is deformed and restores its shape; the deformation sensor is electrically connected to the power component.

2. The soybean cultivation precision seeder according to claim 1, characterized in that: The opening and closing cut-off assembly includes a lower support ring, an upper annular rod and a plurality of partition movable plates; The lower support ring is arranged at the bottom port of the lower sowing guide cylinder and a plurality of circumferentially distributed partition shafts are arranged near the edge of the upper end surface of the lower support ring; The upper annular rod is fixed to the outer wall of the upper sowing guide cylinder, and the two ends of the partition shaft are rotatably connected to the upper annular rod and the partition shaft respectively; Multiple partition movable plates are circumferentially distributed on the upper side of the lower support ring and one corner of the partition movable plate is fixedly connected to the corresponding partition rotating shaft. The multiple partition movable plates can be spliced ​​into a circular plate for closing the bottom port of the upper sowing guide cylinder. The multiple partition movable plates open and close the bottom port of the upper sowing guide cylinder by rotating around the axis of the partition rotating shaft. The multiple partition rotating shafts are also connected to the rotating component.

3. The soybean cultivation precision seeder according to claim 2, characterized in that: Each partition shaft is provided with a partition gear portion; The rotating component includes a rotating sleeve, a radial connecting portion and a plurality of inner racks; The rotating sleeve is rotatably arranged on the edge of the lower supporting ring and a plurality of avoidance notches are opened on the outer wall of the rotating sleeve, and the avoidance notches correspond to the radial connecting parts; One end of the radial connection portion is fixedly connected to the outer wall of the rotating sleeve and the other end is connected to the power assembly, and a plurality of inner racks are circumferentially distributed on the inner wall of the radial connection portion and the plurality of inner racks are respectively engaged with the plurality of partition gear portions; A plurality of arc-shaped protrusions are further provided on the outer wall of the rotating sleeve. The arc-shaped protrusions correspond to the top of the blocking component and the arc-shaped protrusions can drag the top of the blocking component outward.

4. The soybean cultivation precision seeder according to claim 3, characterized in that: The top of the blocking lever arm is provided with a bearing roller which rotates therewith, and the outer wall of the bearing roller is in rolling contact with the side of the arc convex portion.

5. The soybean cultivation precision seeder according to claim 3, characterized in that: The radial connection part is a radial bar frame structure, the side of the mobile frame is provided with an external extension frame and the power assembly includes a power screw part, a servo motor and a toggle rod; The power screw part is rotatably arranged on the outer extension frame and a spiral seat is provided on the power screw part to be spirally matched with it. The spiral seat is connected to the outer extension frame and slides along the axis direction of the power screw part on the outer extension frame; The servo motor is arranged on the outer extension frame, and the output end of the servo motor is rotatably connected to the end of the power screw rod; the top of the toggle rod is fixedly connected to the spiral seat, and the bottom of the toggle rod extends to the inside of the radial connection part.

6. The precision seeder for soybean cultivation according to claim 1, characterized in that: The outer wall of the upper sowing guide cylinder is sleeved with a sleeve portion that rotates with the upper sowing guide cylinder, and the outer wall of the sleeve portion is fixedly connected to the upper edge of the rotating component through multiple external connecting rods; The movable frame is provided with two soil covering mechanisms, and the two soil covering mechanisms are symmetrically arranged on both sides of the lower sowing guide cylinder, and the soil covering mechanisms include a soil covering rod, a soil covering plate and a horizontal movable rod; The top of the soil covering rod is rotatably connected to the top of the movable frame via a spring bearing, and a sliding seat capable of sliding thereon is provided in the middle of the soil covering rod; The horizontal movable rod is provided with a vertical connecting rod, and the top of the vertical connecting rod is slidably connected to the top of the movable frame. One end of the horizontal movable rod is hinged to the sliding seat and the other end is connected to the sleeve part through a one-way transmission part. The covering plate is provided at the bottom of the covering rod; When the opening and closing cutoff assembly switches the closed state between the upper sowing guide cylinder and the lower sowing guide cylinder to a connected state, the sleeve portion acts on the horizontal movable rod through the one-way transmission portion and causes the horizontal movable rod to move in a direction away from the covering rod.

7. The soybean cultivation precision seeder according to claim 6, characterized in that: The one-way transmission part includes a transmission ring and a plurality of transmission teeth provided on the side of the horizontal movable rod; The transmission ring is fixed on the outer wall of the sleeve part and two groups of arc-shaped pushing parts are provided on the outer wall of the transmission ring. The arc-shaped pushing parts are fixedly connected to the outer wall of the transmission ring and can produce elastic deformation when the plate surface is under pressure; one side of the transmission tooth body is an inclined surface and the other side is a straight surface.

8. The soybean cultivation precision seeder according to claim 6, characterized in that: The bottom of the soil covering rod is sleeved with a sleeve portion that is slidably matched with the sleeve portion, and the soil covering plate is fixed to the bottom of the sleeve portion; A pulling link with one end hinged to the top side wall of the sleeve portion is provided, and the other end of the pulling link is hinged to the mobile frame, and the connection between the pulling link and the mobile frame is lower in height than the connection between the pulling link and the sleeve portion.

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