CN108243675B

CN108243675B - Seed divider, seeding device and seeder

Info

Publication number: CN108243675B
Application number: CN201810253279.2A
Authority: CN
Inventors: 王友芳
Original assignee: Zhejiang Zomax Garden Machinery Co ltd
Current assignee: ZHEJIANG ZOMAX GARDEN MACHINERY Co.,Ltd.
Priority date: 2018-03-26
Filing date: 2018-03-26
Publication date: 2021-04-02
Anticipated expiration: 2038-03-26
Also published as: CN108243675A

Abstract

The invention discloses a seed divider, which comprises a fixed disc body, a central shaft, a rotating disc body and a seed taking belt assembly. The seed taking belt assembly comprises a ring-shaped part, a plurality of cantilevers, a fixed clamp and a movable clamp, wherein the ring-shaped part is fixed in the rotating disc body. The fixed clamp is fixed on the inner side wall of the ring-shaped piece, the movable clamp is rotatably arranged on the inner side wall of the ring-shaped piece, and the cantilever is fixed on the outer side wall of the ring-shaped piece. The cantilever is connected to the rotating clamp through a rotating shaft, and the tail end of the cantilever is connected to the annular piece through a spring. The movable clamp and the fixed clamp are both in L-shaped clamp opening shapes, and the clamping part guides the corn seeds into the clamp opening. The protrusion blocks corn seeds from leaking out of the tail. The inside wall of the movable clamp is an arc-shaped notch, which is beneficial to clamping single corn seeds.

Description

Seed divider, seeding device and seeder

Technical Field

The invention relates to a seed divider, which is used for quantitative seeding of corn. The invention also relates to a sowing device and a sowing machine.

Background

200820103637.3 and the test on the seed-metering performance of a mechanical forced clamping type precision seed-metering device (Stone river university, He Lei et al) disclose the structure of a seed-metering device directly contacting with a ridge. When the seed sowing device works, the seeds roll on the ground along with the seed sowing machine, and the seeds in the seed chamber are mainly concentrated in a lower concentration area. The seed taking device passes through the concentration area, and a shifting lever outside the seed taking device drives the movable seed clamping plate to rotate under the action of the guide convex block to clamp seeds. When the seed taking device moves to the highest point of the guide convex block, a clamping mouth formed by the movable seed clamping plate and the fixed seed taking device is opened, and the clamped seeds fall into the seed receiving cup under the action of gravity. The seed metering device with the structure can be used as a reference of the scheme. The seed taking device in the scheme mainly comprises a fixed seed taking device, corn seeds, a movable seed clamping plate and the like. The side of the movable seed clamping plate is straight, which is not beneficial to the corn seeds to enter the clamping position.

Disclosure of Invention

The invention provides a seed separator, which improves a clamping structure, is beneficial to single corn seeds to enter a clamping part, and improves the quantitative seed taking efficiency.

The technical scheme of the invention is realized as follows:

a seed dispenser comprising:

a fixed tray body;

the central shaft penetrates through the fixed disc body and can rotate relative to the fixed disc body;

the rotating disc body is sleeved on the inner side of the fixed disc body and is driven by the central shaft;

a seed taking belt assembly fixed in the rotary disc body,

the seed-taking belt assembly is characterized by comprising a ring piece, a plurality of cantilevers, a fixed clamp and a movable clamp, wherein the ring piece is fixed in the rotating disc body, the fixed clamp is fixed on the inner side wall of the ring piece, the movable clamp is rotatably arranged on the inner side wall of the ring piece, the cantilevers are fixed on the outer side wall of the ring piece, the cantilevers are connected to the movable clamp through a rotating shaft, the tail ends of the cantilevers are connected to the ring piece through a spring, the distance between the shaft parts of the movable clamp and the fixed clamp is 14-15 mm, the movable clamp comprises a first protruding part and a first clamping part, the length of the first protruding part is 3-5 mm, the length of the first clamping part is 18-19 mm, the first protruding part extends along the direction of the movable clamp, the first clamping part extends along the direction of rotation of the ring piece, the first clamping part is provided with an arc-shaped notch, and the arc-shaped notch extends from the top of the first clamping part to the root part, and the arc-shaped notch rotates from the direction towards the central shaft to the direction towards the fixed clamp gradually.

In the seed divider of the invention, the fixed tray comprises a side panel which constitutes a support for said central shaft and is connected to a seed box via a duct, and an annular plate having a plurality of seed discharge openings.

In the seed separator, the rotating disc body comprises a seed blocking part and a rotating plate which simultaneously connects the seed blocking part and the annular part.

In the seed divider, the seed divider further comprises a duckbill assembly, the duckbill assembly comprises an outer connecting plate, a guide pipe, a duckbill plate and a torsion spring, the outer connecting plate is fixed on a central shaft, the guide pipe is fixed on the outer connecting plate, the duckbill plate is hinged on the outer connecting plate, one end of the torsion spring is connected to the duckbill plate, the other end of the torsion spring is connected to the outer connecting plate, and the duckbill plate consists of a guide part and a cover sealing part.

In the seed divider of the invention, the fixing clip comprises a second protruding part and a second clamping part, the length of the second protruding part is 3-5 mm, and the length of the second clamping part is 16-19 mm.

In the seed divider, the maximum gap between the second protruding part and the first protruding part is less than 2mm, and the maximum gap between the second clamping part and the first clamping part is less than 13 mm.

In the seed divider, the arc surface radius of the arc-shaped notch is 14-18 mm, and the radius of the extending track of the arc-shaped notch is 22-31 mm.

A seed planting device, comprising: seed guider, seed sowing device and the seed divider.

A seeding machine is characterized by comprising a seeding support, a seed box and a plurality of groups of seeding devices.

The corn planter with the hard seed guide pipe has the following beneficial effects: the movable clamp and the fixed clamp are both in L-shaped clamp opening shapes, and the clamping part guides the corn seeds into the clamp opening. The protrusion blocks corn seeds from leaking out of the tail. The inside wall of the movable clamp is an arc-shaped notch, which is beneficial to clamping single corn seeds.

Drawings

FIG. 1 is a schematic view of a seed dispenser of the present invention;

FIG. 2 is a sectional view of FIG. 1, mainly illustrating a seed discharging state of the seed dispenser;

FIG. 3 is an enlarged view of a portion of FIG. 1, primarily illustrating the structure of the seed extraction belt assembly;

FIG. 4 is a partial view of FIG. 1, primarily illustrating the mounting structure of the guide rail;

FIG. 5 is a partially exploded view of FIG. 1;

FIG. 6 is a schematic view of another state of FIG. 5;

FIG. 7 is a partial view of a seed extraction tape assembly of the present invention;

FIG. 8 is a schematic view in another direction of FIG. 7;

FIG. 9 is a schematic view in another direction of FIG. 7;

FIG. 10 is a schematic view of a seed planting device of the present invention;

fig. 11 is a schematic view of a seeding machine of the invention;

FIG. 12 is a schematic view of the traveling body of FIG. 11;

FIG. 13 is a schematic view of the retractor of the present invention;

FIG. 14 is a schematic view of another state of FIG. 13;

FIG. 15 is a schematic view of a seed director of the present invention;

FIG. 16 is a schematic view of a seed guider under another embodiment of the invention in FIG. 15;

FIG. 17 is a cross-sectional view of FIG. 16;

FIG. 18 is a schematic view of another state of FIG. 17;

FIG. 19 is a partial view of FIG. 16;

FIG. 20 is a schematic view of another state of FIG. 19;

FIG. 21 is a schematic view of the seed meter of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

State of the art

The folding strength of the seeder is analyzed in the improved design and optimization of the folding type frame of the wide seeder (university of eight agricultural cultivations in Heilongjiang, Lihailiang and the like), and the transverse folding structure of the wide frame is improved.

201510048833.X discloses a precision seeding mechanism, a seed discharging device, an angle adjusting device and a seed conveying device are sequentially connected and mounted on a rack of the precision seeding mechanism. The seed metering device is formed by connecting and installing a seed box, an electromagnetic vibration exciter, a first motor, an outer grooved wheel and a seed metering hose. The angle adjusting device comprises a seed guide pipe. The seed guide pipe and the seed sowing pipe are at least partially made of flexible materials so as to ensure the stable connection between the seed sowing port and the seed box in vibration. The seeder 201510406934.X comprises a frame, a seed discharging device, a seed guiding device and a planting device, wherein the seed discharging device, the seed guiding device and the planting device are arranged on the frame. The seed sowing device comprises a garlic collecting box and a seed sowing box. The seeds in the garlic collecting box enter the seed guide pipe after being quantitatively sowed by the seed sowing box and then enter the farmland through the seed guide pipe. In addition, the seed guiding pipe of the seeding machine is also of a spiral elastic structure.

201410377731.8 comprises a seed-taking device movable plate, a seed-taking device fixed plate, a duckbilled dibbler, a duckbilled mounting rack and the like. When the seeds rotate to the upper opening of the seeding channel, the seeds freely fall into the seeding channel by the self gravity. When the duckbilled dibbler rotates to the lower opening of the seed discharging channel, the seeds enter the seed discharging duckbill in the duckbilled dibbler. After the seed metering duckbilled digs into the soil, the duckbilled is opened by the action of the seed metering pressing plate and the ground, thereby realizing seeding. The duckbill may be shoveled into the ground, the structure of which may be referred to in this application.

The design of a forced clamping type corn precision seed metering device (mechanical and electrical engineering college of the university of Shihe, Buwei and the like) designs the structure and the size of key parts in the seed metering device in detail. The distance between the bottom end edge line of the fixed clamp and the movable clamp is L2, the distance between the top end edge line of the fixed clamp and the movable clamp is L1, and the bottom end edge line and the top end edge of the seed clamping position of the fixed clamp are transition arcs. The sizing was followed 2b > L2 > L1 > L. b is the width of the corn seed and l is the length of the corn seed. In this document, L1=12mm, L2=10.5 mm. The document also discloses a structure of a guide rail (guide projection), the guide rail is provided with an obvious bulge in a seed feeding area, and the bulge makes a spring pull a movable clamp to expand to complete seed feeding through a roller. The guide rail is fixed with the recess of certain interval in another department, and the guide rail height reduces, and the spring resets, and the tensioning moves the clamp, presss from both sides the maize seed. Reference can be made to the structure and the working principle of the seeding device.

In order to control seeding, it is sometimes necessary to provide controls on the terminal seed metering pipe. 201520556290.8 seed-discharging tube has a seed-guiding plate arranged in the tube at the seed-feeding end, the seed-guiding plate is obliquely arranged at one side in the tube, and a seed outlet is formed between the seed-guiding plate and the inner wall of the tube at the opposite side. The seed guide plate is used for controlling the motion direction of the seeds, so that the seeds are subjected to motion separation and the spatial position sequence of the seeds is changed. The seed guide plate in this case is a fixed part. 201710882741.0 comprises a sowing box, a seed tube, a pushing device and a lifting device are arranged in the sowing box, and the seed tube is slidably arranged on the lifting device through a supporting connecting rod. A first stop valve is arranged at the upper end side of the seed discharging pipe; the lower end side of the seed tube is provided with a second stop valve. The lifting device descends until the seed discharging pipe is inserted into the ground surface, the first valve plate is driven to be opened by the first stop valve, and the seed block continues to descend to the seed pit. The stop valve in the scheme is used for controlling the sowing time and is not influenced by the movement direction of the sowing vehicle.

As shown in fig. 1-9, the seed dispenser 800 includes a stationary plate 810, a rotating plate 820, a central shaft 830, a seed extraction tape assembly 840, and a duckbill assembly 850. The central shaft 830 passes through the fixed disc 810 and can rotate relative to the fixed disc 810, the rotating disc 820 is sleeved on the inner side of the fixed disc 810 and is driven by the central shaft 830, and the seed taking belt assembly 840 is fixed in the rotating disc 820. The seed taking belts rotate along with the rotating disc body 820, and seeds enter the seed sowing port 813 along with the seed taking belts one by one. Enters the conduit 852 through the seeding opening 813, and the cover 856 periodically releases the seeds in the conduit 852 to finally enter the seed guider 600. The fixed disk 810 comprises a side panel 811 and a ring-shaped panel 812, the side panel 811 forming a support for the central shaft 830, the side panel 811 being connected to the seed box 300 via the pipe 310, the ring-shaped panel 812 having a plurality of seeding openings 813, the seeding openings 813 corresponding to the period of the conduit 852 when the duckbill assembly 850 is rotated. The side wall of the fixed tray 810 has a guide rail 860 for guiding the movable clamp 845 to open and close. The fixed disk 810 has a seed retaining portion 814 extending into the rotating disk 820. The rotating disk 820 connects the ring-shaped member 841. Duckbill assembly 850 includes an outer connecting plate 851, a conduit 852, a duckbill plate 853, and a torsion spring 854. An outer attachment plate 851 is fixed to the central shaft 830, the conduit 852 is fixed to the outer attachment plate 851, and the duckbill plate 853 is hinged to the outer attachment plate 851. One end of a torsion spring 854 is connected to the duckbill plate 853 and the other end is connected to the outer connecting plate. The duckbill plate 853 is composed of a guide portion 855 and a cap portion 856, the length of the guide portion 855 is greater than the distance between the torsion spring 854 and the flared tube 610, and the length of the cap portion 856 is less than the distance between the torsion spring 854 and the flared tube. The cover 856 is closer to the forward side in the direction of rotation of the duckbill assembly 850. In the free state, the urging force provided by the torsion spring 854 causes the cover 856 to press against the conduit 852, preventing the seeds from falling. During rotation of the duckbill assembly 850 with the central shaft 830, the guide 855 is impeded from rotating by the flared tube 610 so that the closure portion 856 opens the conduit 852 and the seed falls into the flared tube 610. The present application does not refer to 200820103637.3 and other documents as far as the features are concerned.

The seed extraction tape assembly 840 includes a ring 841 and a plurality of cantilever arms 842, a retaining clip 843, a seed cassette 844, and a moving clip 845. The ring member 841 is fixed in the rotating disk body 820, the fixing clip 843 is fixed on the inner side wall of the ring member 841, and the movable clip 845 is rotatably installed on the inner side wall of the ring member 841. The arm 842 is fixed on the outer side wall of the ring 841, the arm 842 is connected to the movable clamp 845 through a rotating shaft 847, the tail end of the arm 842 is connected to the ring 841 through a spring 846, and the front end of the arm 842 is provided with a roller 848, and the roller 848 is at least partially pressed on the guide rail 860. In the present invention, the guide 860 pushes against the cantilever 842, forcing the spring to elongate and drive the movable clamp 845 open. The side position of the guide 860 determines the angle of rotation of the arm 842 to achieve the clamping and unclamping of the movable clamp 845. One rotation cycle of the seed take-up belt assembly 840 is roughly divided into three states. The roller 848 rolls on the guide rail 860, and the movable clamp 845 and the fixed clamp 843 open at a small angle to clamp seeds (seed clamping area). The roller 848 gradually leaves the guide rail 860, and the fixed clamp 843 and the movable clamp 845 clamp single corn seeds, and redundant seeds are reserved in a storage area (seed cleaning area). The roller enters the area of the maximum inclined plane of the guide rail 860, the fixed clamp 843 and the movable clamp 845 are opened at the maximum angle, and single corn seeds enter the inoculation box 844 (seeding area).

In this embodiment, the movable clamp 845 and the fixed clamp 843 are both in an L-shaped clamp mouth shape, and the distance between the shaft parts of the movable clamp 845 and the fixed clamp 843 is 14-15 mm. The grip portion guides the corn seeds into the nip and the tab 734 blocks the corn seeds from leaking out of the tail. In order to facilitate the clamping of a single corn seed, the inner side wall of the movable clamp 845 is a spiral arc-shaped notch. The movable clip 845 includes a first protrusion portion 871 and a first clamping portion 872, the length of the first protrusion portion 871 is 3 to 5mm, and the length of the first clamping portion 872 is 18 to 19 mm. The first protrusion 871 extends in the direction of the movable clip 845, and the first grip 872 extends in the direction of rotation of the ring member 841. The clip 843 includes a second protrusion 873 and a second clamping portion 874, the second protrusion 873 having a length of 3 to 5mm and the second clamping portion 874 having a length of 16 to 19 mm. The maximum gap between the second protrusion 873 and the first protrusion 871 is less than 2mm, and the maximum gap between the second clamping part 874 and the first clamping part 872 is less than 13 mm. The first clamping portion 872 has an arc-shaped notch 875 extending from the top to the root of the first clamping portion 872, and the arc-shaped notch 875 rotates from a direction toward the central axis 830 to a direction toward the fixing clamp 843. The arc radius of the arc notch is 14-18 mm, and the radius of the extending track of the arc notch is 22-31 mm. The corn seeds move along the annular gap to the gap between the movable clamp 845 and the fixed clamp 843 and gradually approach the annular member 841. The arrangement of the arc-shaped notch further improves the seed clamping efficiency of the forced clamping structure. When the operation speed is 4km/h (other operation conditions refer to the conventional means in the field and are not listed one by one), the single-seed rate of hole sowing can reach 95.5%, the reseeding rate is about 3.17%, the miss-sowing rate is less than 1.33%, and the seed breakage rate is 0. The miss-seeding rate is lower than the design results of the design of the forced clamping type corn precision seed-metering device 700 and the like.

In the present invention, the expansion unit 900 controls the opening angle of the actuating clips 845, and if necessary, cancels the maximum angle state (seed discharge region) of the actuating clips 845. The guide rail includes a rail body 861 and a protrusion 862 slidably engaged to a portion of a side wall of the rail body 861. The rail body 861 has a substantially trapezoidal configuration. It is comprised of a first inclined segment 863, a straight segment 864, a second inclined segment 865, and a floor 866. The protrusion 862 is a smaller trapezoid structure movably jointed to the straight section 864, and the protrusion 862 at least partially forms the same guiding slant 867 with the first slant section 863, which guides the cantilever 842 into the maximum angle of opening. The telescopic device of this embodiment drives the protrusion 862 to move up, can reduce the maximum opening angle of cantilever 842 for move clamp 845 centre gripping maize seed all the time, suspend the discharge of maize seed. The retractor 900 may be a magnetostrictive device that determines the state of retraction in response to an electrical signal. The retractor 900 includes an electromagnet 910 (electromagnetic coil), a magnetostrictive rod 920, and a base 930. The unexpired matter of retractors is described with reference to 200680052506.0, 200710125011.2, etc. The base 930 is fixed inside the fixed disk 810, and the electromagnet 910 is fitted over the base 930 and connected to the fixed disk 810 through the base 930. The electromagnet 910 has a chute 911, and the electromagnet 910 may be connected to an external power network via a conductive line (not shown). The magnetostrictive rod 920 is connected to the protrusion 734, the magnetostrictive rod 920 extends at least partially into the chute 911, and the magnetostrictive rod 920 extends at least partially into the electromagnet 910. The magnetostrictive rod 920 has a shoulder 921, and the elastic member 940 has one end abutting on the shoulder 921 and the other end fixed in the base 930. The base 930 has a limiting portion 931, and the limiting portion 931 is used for limiting the movement of the magnetostrictive rod 920. In the non-energized state of the electromagnet 910, the elastic body pushes the magnetostrictive rod 920 to move farthest, maintaining the assembled state of the protrusion 862 and the rail body 861. At this time, the seed distributor 800 distributes seeds at regular time. In the energized state, the magnetostrictive rod 920 is attracted into the electromagnet 910 with the protrusion 862 away from the rail body 861. At this time, the seed distributor 800 does not distribute the seeds.

The corn planter of the present invention, as shown in fig. 10 to 21, is composed of a traveling body 100, a planting support 200, a seed box 300, a land wheel 400, and a plurality of sets of planting devices 500. The seed box 300 is fixed on the sowing support 200, the ground wheels 400 are installed at both sides of the sowing support 200, and the sowing device 500 is installed at the lower portion of the seed box 300. The traveling body 100 pulls the sowing bracket 200, and corn seeds are quantitatively sown into the cultivated land through the sowing device 500, which is described below. The present invention is not to be taken as an exhaustive list with reference to the prior art cited and to the general knowledge of the art.

The traveling body 100 is, for example, a tractor, and includes a vehicle body 110, an engine 120, a steering wheel 130, and a drive wheel 140. The engine 120 is mounted on the vehicle body 110 and drives the driving wheel 140 to rotate. The engine 120 is, for example, a diesel engine of the related art, and an exhaust pipe 116 thereof is attached to the vehicle body 110 side. The vehicle body 110 has a side plate 111 and a bottom plate 112, the two side plates 111 are respectively fixed on two sides of the bottom plate 112, and the side plates 111 are used for blocking the driving wheel 140 and blocking muddy water from entering the middle. Between the side plates 111 there is a seat 113. The side plate 111 is hinged on the bottom of the seeding bracket 200 through a rocker arm 114, the bottom plate 112 is provided with a cylinder 115, and the end of the cylinder 115 is hinged on the upper part of the seeding bracket 200. The cylinder 115 drives the seeding support 200 to move up and down, and the distance between the seeding device 500 and the ground is adjusted. The air cylinder 115 can also completely lift the seeding support 200 during the non-working time, so as to prevent the specific gravity device from being damaged by the near-ground object. The sowing bracket 200 has a truss 210, a support table 220, and a step 230. The truss 210 has scraper bars 211 on both sides, the scraper bars 211 being aligned with the ground wheels 400. The truss side wall drive 212 is used to drive the central shaft of the seed divider. A support platform 220 is installed at the rear of the truss 210, and a step plate 230 is connected to the support platform 220. The support platform 220 and the pedals 230 reserve an operating space for the grower. The box 300 is a funnel-shaped structure, and a plurality of outlets of the box are correspondingly connected with the seed distributors 800 at different positions. An auger structure can be disposed within the seed box 300 for guiding the seeds into the seed sorter 800.

The sowing device 500 includes a seed guider 600, a seed sowing device 700, a connecting rod 510, and a seed divider 800. The corn seeds enter the seed holes sequentially through the seed box 300, the seed separator 800, the seed guider 600 and the seed sowing device 700. One end of the connecting rod 510 is fixed on the seed sowing device 700, and the other end is hinged at the bottom of the sowing bracket 200. The seed distributors 800 are arranged side by side at the side of the seed box 300, and the seed box 300 is communicated with the cavities of the seed distributors 800 through a pipeline 310. The seed box 300 and the seed separator 800 can form a communicating vessel structure, and the height of the seeds in the seed box 300 is flush with the cavity of the seed separator 800 so as to control the maximum capacity of the seed separator 800. The duct 310 should have as little bending as possible, so the seed separator 800 should be arranged directly below the seed box 300, and the width of the seed box 300 determines the number and the gap of the seed separator 800. The width of the seeding apparatus 700 is adapted to the ridge of the cultivated land, and the width is always larger than that of the seed divider 800. The catheter and the linkage 510 should have some deformation and bending. The pitch of adjacent seed separators 800 is less than the pitch of adjacent seed meters 700, and at least some of the links 510 have a bend that guides the seed meters 700 away from each other. The seed sowing device 700 is placed on a cultivated land and can rotate around the sowing support 200 according to the fluctuation of the cultivated land, and the seed guider 600 can bear the bending deformation of partial movement. In the prior art, the seed guide 600 is, for example, a spiral rubber tube, and the severe working environment may cause the rubber tube to be twisted and bent, which may affect smooth seeding.

In the present invention, the seed guider 600 is composed of a flared tube 610, a first seed guider 620 and a second seed guider 630. The flared tube 610 is mounted on the seeding support 200, and the flared tube 610 is connected to the seeding apparatus 700 through a first seed guide 620 and a second seed guide 630. The flared tube 610 has a tapered portion 611 and a first inner spherical portion 612, and the first seed guide tube 620 has a first outer spherical portion 621. The first inner spherical portion 612 is mounted in the first outer spherical portion 621 to form a spherical hinge structure. When the first inner spherical portion 612 rotates within the first outer spherical portion 621, the opening of the first inner spherical portion 612 is at least partially in communication with the first outer spherical portion 621. The first inner spherical portion 612 ends in a first opening 613, the first outer spherical portion 621 has a second opening 622 connected to the cylindrical conduit 623, and the intersection area of the first opening 613 and the second opening 622 is larger than the corn seed (about 4mm 2) when the flared tube 610 rotates relative to the first seed guide 620. In the present invention, the movement of the seed meter 700 is controlled by small ground undulations, a spherical section with a radius greater than 3mm and an opening size of 30mm2 are sufficient. The seed meter 700 has a second outer spherical portion 710 and the second seed guide 630 has a second inner spherical portion 631. A second inner spherical portion 631 is mounted in the second outer spherical portion 710, and the opening of the second inner spherical portion 631 is at least partially in communication with the second outer spherical portion 710 when the second inner spherical portion 631 rotates within the second outer spherical portion 710. The first seed pipe 620 is movably inserted into the second seed pipe 630. An elastic member 640 (spring) is disposed outside the first seed guide 620, one end of the elastic member 640 abuts against the outer sidewall of the first inner spherical portion 612, and the other end of the elastic member 640 presses against the second seed guide 630. The seed guider 600 adopts a four-section structure and consists of a plurality of rotating pairs and moving pairs. When the seed sowing device 700 moves along the terrain, the seed guider 600 rotates and stretches according to the height of the seed sowing device 700, and the seed channels in the seed guider 600 are always communicated. The seed guider 600 is made of hard pipes made of metal or thermosetting plastic and the like, and can still keep the shape in cultivated land such as corn stubble. When the seeding vehicle is in a plant dense area such as crop stubble, the seed guider 600 is not easy to bend and turn over under the influence of the stubble, and the pipeline is always kept smooth.

In the present invention, the seed meter 700 has a seed meter body 720 and a cap 730, the bottom of the seed meter body 720 is provided with an opening cutter 721, and the opening cutter 721 is used for discharging soil or guiding. The inside of the seed metering device body 720 is a through seed channel 722, and the seed channel 722 is communicated with the seed guide 600. Referring to the drawings, the cap 730 has a hinge portion 731 and a sealing portion 732 perpendicular to each other, the hinge portion 731 being mounted on the seed meter body 720 above the seed passage. When the hinge portion 731 is rotated to the tail portion of the seed channel, the sealing portion 732 presses against the tail portion of the seed channel. The tail of the seeding unit body 720 is provided with an oblique opening 723, the sealing part 732 is provided with an extending side 733 and a protruding part 734, the extending side 733 is blocked at two sides, and the protruding part 734 extends into the oblique opening 723 and blocks the seed channel 722. Under its own weight, the cap 730 rotates in a direction to close the seed passage 722. When the sowing machine moves forward, the cover 730 is in an open state supported by the ground. When the sowing machine moves backward, the sealing part 732 rotates clockwise to press the seed passage, preventing the discharge of the seeds. In this embodiment, the seed meter body 720 is provided with a sensor 725, the sensor 725 being connected to the cap 730 via an operating rod 726, the sensor 725 driving the seed dispenser 800. The cap 730 may also transmit a rotation signal to the sensor 725 and control the operation of the dispenser 800 via the sensor 725. When the cover 730 closes the seed channel, the sensor controls the seed distributor 800 to stop seeding. The sensor is, for example, a displacement sensor, and when the cover 730 rotates to a threshold distance, the displacement sensor transmits a signal to the main control unit through the signal line 727, and the main control unit controls the expansion piece to move and change tracks.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A seed dispenser comprising:

a fixed tray body;

a seed taking belt assembly fixed in the rotary disc body,

the seed-taking belt assembly is characterized by comprising a ring piece, a plurality of cantilevers, a fixed clamp and a movable clamp, wherein the ring piece is fixed in the rotating disc body, the fixed clamp is fixed on the inner side wall of the ring piece, the movable clamp is rotatably arranged on the inner side wall of the ring piece, the cantilevers are fixed on the outer side wall of the ring piece, the cantilevers are connected to the movable clamp through a rotating shaft, the tail ends of the cantilevers are connected to the ring piece through a spring, the distance between the shaft parts of the movable clamp and the fixed clamp is 14-15 mm, the movable clamp comprises a first protruding part and a first clamping part, the length of the first protruding part is 3-5 mm, the length of the first clamping part is 18-19 mm, the first protruding part extends along the direction of the movable clamp, the first clamping part extends along the direction of rotation of the ring piece, the first clamping part is provided with an arc-shaped notch, and the arc-shaped notch extends from the top of the first clamping part to the root part, and the arc notch is gradually rotated from the direction of the central shaft to the direction of the fixed clamp, wherein,

the side wall of the fixed disk body is provided with a guide rail for guiding the movable clamp to open and close,

the front end of the cantilever is provided with a roller which is at least partially pressed on the guide rail,

the guide rail comprises a rail body and a protrusion body, the protrusion body is spliced on part of the side wall of the rail body in a sliding way, the rail body consists of a first inclined section, a straight section, a second inclined section and a bottom surface,

the protrusion is movably spliced on the straight section, at least partially forms the same guide inclined plane with the first inclined section, and the guide inclined plane guides the cantilever into a maximum opening angle.

2. The seed dispenser of claim 1 wherein the fixed disk includes a side panel that forms a support for the central shaft and an annular plate connected to a seed box via a conduit, the annular plate having a plurality of seed ports.

3. The seed sorter of claim 1 wherein the rotating disk includes a seed trap portion and a rotating plate that connects the seed trap portion and the annular member simultaneously.

4. The seed divider of claim 1, characterized in that the seed divider further comprises a duckbill assembly, the duckbill assembly comprising an outer connecting plate, a guide tube, a duckbill plate and a torsion spring, the outer connecting plate is fixed on the central shaft, the guide tube is fixed on the outer connecting plate, the duckbill plate is hinged on the outer connecting plate, one end of the torsion spring is connected to the duckbill plate, the other end is connected to the outer connecting plate, and the duckbill plate is composed of a guide part and a cover sealing part.

5. The seed sorter of claim 1 wherein the set clamp comprises a second projection and a second grip, the second projection having a length of 3 to 5mm and the second grip having a length of 16 to 19 mm.

6. The seed sorter of claim 5 wherein the maximum clearance of the second projection from the first projection is less than 2mm and the maximum clearance of the second clamp from the first clamp is less than 13 mm.

7. The seed divider according to claim 1, characterized in that the arc-shaped notch has an arc surface radius of 14 to 18mm and the arc-shaped notch has an extension track radius of 22 to 31 mm.

8. A seed planting device, comprising: seed guider, seed metering device and the seed divider of claim 1.

9. A seeding machine comprising a seeding support, seed boxes and a plurality of sets of the seeding devices of claim 8.