A double-channel seeding device for sowing soybeans on ridges

Abstract

The present invention discloses a double-channel seeding device for sowing on soybean ridges, comprising a seeding device bottom shell, a left air distribution mechanism, a right air distribution mechanism, a left seeding disc, a right seeding disc, and a seeding shaft, wherein the seeding shaft is connected to a power transmission mechanism; the power transmission mechanism comprises a driving mechanism and a power transmission device, wherein the power transmission device is a worm gear mechanism, wherein the power input end of the worm gear mechanism is connected to the power output end of the driving mechanism, and the power output end of the worm gear is connected to the seeding shaft. The present invention provides a power transmission structure of a motor-worm-worm-wheel-seeding disc rotating shaft, which has stable power transmission, small jump and slip compared to the traditional driving scheme. At the same time, by adjusting the seed-clearing knife handle according to the different scales of the dial, the seed-clearing force of each seed-clearing knife can be adjusted separately, and reliable seed clearing of soybeans of different particle sizes can be achieved without changing the seeding disc. The angle of the seeding plate is adjusted by the handle to achieve directional seeding of soybean seeds.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a double-channel seeding device for sowing soybeans on ridges. Background Art

[0002] At present, soybean narrow row dense planting technology mainly includes two modes: parallel narrow row dense planting and ridge dense planting. It is roughly divided into flat planting, large ridge narrow row, and small ridge narrow row dense planting. The soybean small ridge dense planting high-yield cultivation technology refers to double-strip sowing on the ridge, which is equivalent to narrow row sowing on the basis of ridge cultivation. This planting method has a significant yield increase effect compared to ordinary conventional ridge cultivation. In view of this, it is necessary to develop a dual-channel seeding device suitable for soybean ridge sowing, and develop an electric drive technology solution to further improve the sowing level and sowing quality of soybean planters, and provide technical support for soybean yield and efficiency improvement.

[0003] Publication (announcement) number: CN103416136B, Publication (announcement) date: 2015-06-10. It relates to a double-chamber pneumatic seed metering device, which is composed of a left air chamber, a right air chamber, a left seed suction disc, a right seed suction disc, a seed filling cavity, a seed discharge tube, a seed discharge shaft, a seed inlet adjustment plate and a seed discharge block. The seed metering device is symmetrically equipped with left and right seed suction discs and left and right air chambers on the left and right sides of the seed filling cavity along the axial direction of the seed discharge shaft. The seed filling cavity is divided into a seed filling cavity and a seed discharge cavity by an internal partition plate. The surface of the seed suction disc is provided with a plurality of groups of seed suction holes along the circumferential direction, and the edges of the seed suction holes are provided with stirring teeth. The seed discharge tube can swing left and right. The present invention can form two seed suction discs to discharge seeds simultaneously, sequentially or individually, and the sowing amount, sowing hole spacing and row spacing can be changed under the premise of achieving precision sowing. The present invention is suitable for precision hole sowing of crops such as rice, cotton, corn and beans.

[0004] Publication (announcement) number: CN109691268A, Publication (announcement) date: 2019-04-30 A dual-motor real-time reseeding and adjusting sowing device and method, the device is mounted on a seeder, including a frame; a primary seeding mechanism, including a first motor, an air-suction precision seeding device and a missed seeding sensor, the missed seeding sensor determines whether the seeding hole position of the air-suction precision seeding device is a single seed, and controls the rotation of the seeding disc of the air-suction precision seeding device through the first motor to ensure single seeding and no missed seeds; a connecting mechanism, connecting the primary seeding mechanism and the secondary seeding mechanism; the secondary seeding mechanism, including a second motor and a seeding disc, the second motor controls the linear speed of the seeding disc to be opposite to the walking speed of the seeder and the speed value is equal to ensure zero-speed seeding when the seeds fall; and a furrowing mechanism; wherein the maximum instantaneous speed of the seeding disc is greater than the instantaneous speed of the seeding disc to ensure the accuracy of seeding. The present invention also discloses a dual-motor real-time reseeding and adjusting sowing method of the device.

[0005] Publication (announcement) number: CN107258165A, Publication (announcement) date: 2017-10-20 It relates to a one-chamber double-row air-suction seeder, including a frame, a U-shaped clamp, and a sowing unit. The frame includes a crossbeam and a three-point suspension device, wherein the three-point suspension device is fixedly connected to the front of the crossbeam. The sowing units are more than one group, which are fixedly connected to the crossbeam in sequence. The sowing units include a contoured four-link, a sowing unit frame, a seed box, an air-suction shaft, a one-chamber double-row seed discharger, a seed delivery tube a, a seed delivery tube b, a furrow opener a with a seed groove, a furrow opener b with a seed groove, a suppression device, and a power transmission device. When the one-chamber double-row air-suction seeder described in the present invention is working, a closed air chamber of each sowing unit sows two rows of seeds. The present invention has a simple and compact structure, and the seeds fall into the seed groove along the seed groove of the furrow opener, thereby reducing the seed drop height and improving the uniformity of seed distribution.

[0006] Publication (announcement) number: CN101595780A, Publication (announcement) date: 2009-12-09, relates to a single-ridge double-row air-suction seed-drilling device for sowing. The single-ridge double-row air-suction seed-drilling device comprises a seed chamber, one side or both sides of the seed chamber are provided with two air chambers, the middle part of each air chamber is provided with a seed-drilling shaft, a bearing is sleeved on the seed-drilling shaft, a seed-drilling disk is provided on one side of the seed chamber on each seed-drilling shaft, a sprocket is provided on the other side of each seed-drilling shaft, a seed-sucking hole is provided on the seed-drilling disk, and a vacuum chamber is provided on the air chamber, and the setting position of the seed-sucking hole matches the vacuum chamber. After the seeds sown by the present invention emerge, double seedling belts can be realized on the same ridge and arranged at intervals, that is, a certain seedling of one seedling belt just corresponds to the middle position of another seedling belt, and the spacing between each seedling is equal. The shape of the seeds is not strictly required. If a certain power of the sprocket is cut off, a single ridge and a single row are formed, so the versatility is good. It can improve the speed of sowing operations, avoid reseeding and missing seeds, ensure the requirements of the farming period, and increase production.

[0007] Publication (announcement) number: CN109566018A, Publication (announcement) date: 2019-04-05 It relates to a one-device, two-row, high-speed, pneumatic precision seed metering device. The technical solution includes that the space in the cover shell is divided into a seed filling chamber and an air chamber by a seed suction disc, the seed filling chamber is provided with a feed port and a seed guide port, a seed partition plate is provided next to the seed guide port, the air chamber includes a negative pressure air chamber and a positive pressure blowing port located above the seed guide tube, a plurality of seed suction holes are arranged on the inner ring and the outer ring of the seed suction disc, a seed separation plate located above the seed guide tube is provided in the seed filling chamber, the rear end of the seed separation plate is fixed on the cover shell, the front end is located between the inner ring seed suction hole and the outer ring seed suction hole of the seed suction disc, and the lower end extends into the seed guide port to separate the seed guide port into a first seed guide area and a second seed guide area; the seed guide tube includes a first seed guide tube and a second seed guide tube, the first seed guide area is connected to the first seed guide tube, and the second seed guide area is connected to the second seed guide tube. The invention has a simple structure, can carry out double-row precision seeding at the same time, has a low missed seeding rate and high operation efficiency.

[0008] Publication (announcement) number: CN108271475A Publication (announcement) date: 2018-07-13 Electric drive single-double row universal cylindrical wheel air suction precision seeding device and seeding method. Currently, the seeding discs used are all vertical discs. When the number of rows needs to be changed when sowing different crops, different seeding devices must be replaced for seeding. During the replacement process, it takes time to replace the seeding device, and the seeding efficiency is low. An electric-driven single-row and double-row universal cylindrical wheel type air suction precision seeding device comprises: a seeding device housing (2), a negative pressure pipe joint (13) is arranged above the seeding device housing, the negative pressure pipe joint is connected to a negative pressure fan, a bearing chamber and a seeding cylindrical wheel driving shaft are arranged at the center of the seeding device housing, the seeding cylindrical wheel driving shaft (6) is connected to a driving stepping motor (5) and a seeding cylindrical wheel (8), a seed chamber cover (9) is arranged outside the seeding cylindrical wheel, and positive pressure chamber partitions (16) are arranged on both sides of the fan-shaped area of ​​the seeding port directly below the seeding cylindrical wheel. The present invention is applied to air suction precision seeding.

[0009] The technical solutions of existing public technologies in the society, the technical problems to be solved and the beneficial effects produced are all different from the present invention, or the technical fields or application scenarios are different. For more technical features, technical problems to be solved and the beneficial effects of the present invention, the above public technical documents do not contain any technical inspiration. Summary of the invention

[0010] The purpose of the present invention is to provide a dual-channel seeding device for sowing soybeans on ridges in view of the above-mentioned defects in the prior art. The power transmission structure of the motor-worm-worm gear-seeding disk rotating shaft of the seeding device has stable power transmission, small jump and slippage compared with the traditional drive scheme. At the same time, by adjusting the seed-clearing knife handle according to the different scales of the dial, the seed-clearing force of each seed-clearing knife can be adjusted separately, and reliable seed clearing of soybeans of different particle sizes can be achieved without changing the seeding disk. By adjusting the angle of the seeding plate by the handle, the directional planting of soybean seeds can be achieved, the randomness of the projection direction of the soybean seeds after falling off from the shaped hole can be avoided, the consistency of the precision sowing grain distance of soybeans can be improved, and the sowing quality of the soybean planter can be improved.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] A double-channel seeding device for sowing on soybean ridges, comprising a seeding device bottom shell, a left air distribution mechanism, a right air distribution mechanism, a left seeding disc, a right seeding disc, and a seeding shaft. Seed filling cavities are arranged on both sides of the lower half of the seeding device bottom shell, namely a left seeding cavity and a right seeding cavity. The inner bottom of the seeding device bottom shell is connected to the left seeding cavity and the right seeding cavity at the same time. The left air distribution mechanism is installed on the outer side of the left seeding cavity, and the right air distribution mechanism is installed on the outer side of the right seeding cavity. The left seeding disc and the right seeding disc are symmetrically installed on the seeding shaft respectively. The outer side of the left seeding disc corresponds to the air distribution chamber of the left air distribution mechanism, and the inner side corresponds to the left seeding cavity. The outer side of the right seeding disc corresponds to the air distribution chamber of the right air distribution mechanism, and the inner side corresponds to the right seeding cavity. The seeding shaft is connected to a power transmission mechanism.

[0013] The power transmission mechanism includes a driving mechanism and a power transmission device. The power transmission device is a worm gear mechanism. The power input end of the worm gear mechanism is connected to the power output end of the driving mechanism, and the power output end of the worm gear is connected to the seeding shaft.

[0014] Furthermore, the driving mechanism is a driving motor.

[0015] Furthermore, the driving motor is fixedly mounted on the bottom shell of the seed metering device by means of bolts, the worm of the worm gear mechanism is connected to the driving motor, and the worm wheel of the worm gear mechanism is connected to the seed metering shaft.

[0016] Furthermore, a seed cleaning knife assembly is installed on the front side of the left seed filling cavity and the right seed filling cavity, and the seed cleaning knife assembly includes a seed cleaning scale plate, an outer edge seed cleaning knife assembly, and an inner edge seed cleaning knife assembly;

[0017] The outer seed cleaning knife assembly includes an outer seed cleaning adjustment handle, a front pressure plate, an outer seed cleaning knife, a connecting plate, and a lower directional plate. The seed cleaning scale plate is fixed to the seed filling cavity by bolts. The seed cleaning scale plate is provided with an upper row of arc scale holes and a side row of arc scale holes. The lower half of the outer seed cleaning adjustment handle is provided with two circular through holes, wherein the upper circular through hole is connected to the connecting plate by a rivet, so that the connecting plate can be linked with the outer seed cleaning adjustment handle, and the lower circular through hole is hinged to the front pressure plate by a rivet. The lower circular through hole serves as the center of the circle for the outer edge seed cleaning adjustment handle to swing. The upper end of the outer edge seed cleaning adjustment handle is an arc-shaped positioning plug, which is inserted into the upper row of arc-shaped scale holes; the front pressing plate is connected to the lower directional plate and the seed cleaning scale plate as a whole through rivets, and the lower directional plate and the scale plate clamp the outer edge seed cleaning knife with the help of upper and lower surfaces, and the seed cleaning knife is positioned through the lower surface of the front pressing plate, and the outer edge seed cleaning knife is riveted and positioned with the connecting plate through rivets, and the outer edge seed cleaning knife sticks to the seeding disk and passes the outer edge of the seeding row hole when the seeding disk rotates;

[0018] The inner edge seed cleaning knife assembly includes a blade slider, an inner edge seed cleaning adjustment handle, a knife seat, and an inner edge seed cleaning knife. The inner edge seed cleaning knife is fixed to the blade slider by bolts, and the blade slider is inserted into the slide groove of the knife seat and connected to the knife seat by rivets. The inner edge seed cleaning adjustment handle is hinged to the knife seat, and the knife seat is hinged to the seed filling cavity by a pin shaft; the upper end of the inner edge seed cleaning adjustment handle is an arc-shaped positioning plug, and the arc-shaped positioning plug is inserted into the side row of arc-shaped scale holes. The inner edge seed cleaning knife sticks to the seeding disk and crosses the inner edge of the seeding row hole when the seeding disk rotates.

[0019] Furthermore, a terminal seed delivery mechanism is installed on the rear side of the seed filling cavity, and the terminal seed delivery mechanism includes a seed dropping angle scale plate, a seed dropping adjustment handle, and a seed dropping plate. The seed dropping angle scale plate is fixed to the seed filling cavity by bolts, and an arc-shaped scale hole for seed dropping adjustment is provided on the seed dropping angle scale plate. The upper end of the seed dropping adjustment handle is an arc-shaped positioning plug, and the arc-shaped positioning plug is inserted into the arc-shaped scale hole for seed dropping adjustment. The seed dropping plate is located in the seed filling cavity, and the seed dropping plate is an arc-shaped plate. Two holes are provided on the upper end of the seed dropping plate, the upper hole is connected and fixed to the lower end of the seed dropping adjustment handle as a whole, and the lower hole is hinged to the seed filling cavity through an axis.

[0020] Furthermore, a herringbone-shaped diverter seed channel is arranged at the bottom of the bottom shell of the seed meter, so that the left seed filling cavity and the right seed filling cavity are connected with the upper half space of the bottom shell of the seed meter at the same time through the herringbone-shaped diverter seed channel. The left seed filling cavity and the right seed filling cavity are both designed with seed disk flanges installed on the seeding shaft, namely the left seed disk flange and the right seed disk flange. An S-shaped rib plate is arranged on the above two seed disk flanges as a seed blocking plate, namely the left seed blocking plate and the right seed blocking plate. The outer side of the left seed blocking plate corresponds to the left seed disk, and the outer side of the right seed blocking disk corresponds to the right seed disk.

[0021] Furthermore, sealing rings are installed on the inner side of the air distribution chamber of the left air distribution mechanism and the inner side of the air distribution chamber of the right air distribution mechanism. The sealing rings are non-flexible plastic polyurethane self-lubricating structures, the outer rings are cut into arc structures, and a negative pressure groove is opened in the middle, which is sealed to the outer side edge of the left seed disc or the right seed disc.

[0022] Furthermore, the left seed disc or the right seed disc is a disc-shaped sheet metal structure, and a number of block-shaped seed disturbing teeth are evenly riveted around the outer edge. The seed disturbing teeth are right-angle bent structures, and the edges are chamfered. A regular hexagonal through hole is designed in the middle and is installed on the regular hexagonal flanges at both ends of the seed discharging shaft.

[0023] Furthermore, the seeding shaft passes through the bottom shell of the seeding device and extends to both ends of the bottom shell of the seeding device. Both ends are connected with regular hexagonal flanges and are connected to the seeding disk.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention separately introduces negative pressure gas from the air inlets of the left / right housings, and utilizes the pressure difference at the orifice positions to adsorb soybean seeds on the orifices of the seed metering disc. The soybean seeds follow the rotation of the seed metering disc and fall off from the orifices of the seed metering disc after leaving the negative pressure chamber. The left and right sides of the seed metering device are separately supplied with gas, which can either work alone for single-row sowing or work simultaneously on both sides to complete double-channel sowing on the soybean ridge.

[0026] 2. The seed channel at the bottom shell of the seed metering device of the present invention has an "inverted" layout, with a common seed bin at the upper end, and it flows rapidly to the left and right sides through the double-channel seed channels. This effectively reduces the volume of the seeder and realizes double-channel seed supply from one seed box.

[0027] 3. The sealing ring of the present invention is a polyurethane non-flexible sealing ring, which reduces the wear between the sealing ring and the seed metering disc during operation and extends the working life.

[0028] 4. The present invention proposes an electric drive scheme: a power transmission structure of motor - worm - worm gear - seed metering disc rotating shaft, which has more stable power transmission, less跳动 and sliding compared with the traditional drive scheme.

[0029] 5. The present invention designs a seed cleaning knife combination that can be adjusted separately to complete combined seed cleaning, which is composed of outer-edge seed cleaning and inner-edge seed cleaning. As the seed metering disc rotates, it sequentially completes double-sided seed cleaning of the outer edge and inner edge of the orifice. At the same time, by adjusting the handle of the seed cleaning knife according to different scales on the dial, the seed cleaning force of each seed cleaning knife can be adjusted separately, and reliable seed cleaning of soybeans with different particle sizes can be realized without replacing the seed metering disc.

[0030] 6. The present invention designs a seed end delivery device. By adjusting the angle of the seed delivery plate through the handle, it realizes the directional dropping of soybean seeds, avoids the randomness of the projection direction after the soybean seeds fall off from the orifice, improves the consistency of the seed spacing in precise sowing of soybeans, and improves the sowing quality of the soybean seeder.

[0031] Through the above technical solutions, compared with the prior art, the present invention provides a double-channel seed metering device for soybean ridge sowing and its electric drive layout scheme, which can realize double-row sowing on the soybean ridge, realize the high-yield cultivation technology of close planting in small soybean ridges, further improve the sowing level and sowing quality of the soybean seeder, and provide technical guarantee for increasing soybean yield and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic side view structure diagram of a double-channel seed metering device for soybean ridge sowing of the present invention;

[0033] Figure 2 It is a schematic external three-dimensional structure diagram of a double-channel seed metering device for soybean ridge sowing of the present invention;

[0034] Figure 3It is a partial cross-sectional schematic diagram of the three-dimensional structure of a dual-channel seed metering device for sowing soybeans on ridges according to the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the negative pressure cavity of the left shell;

[0036] Figure 5 It is a schematic diagram of the outer edge and inner edge seed cleaning knife components;

[0037] Figure 6 Schematic diagram of the sealing ring structure;

[0038] Figure 7 This is a schematic diagram of the terminal seed delivery structure;

[0039] Figure 8 It is a schematic diagram of the seeding plate structure;

[0040] Fig. 9 Schematic diagram of the inner edge seed cleaning knife assembly.

[0041] In the figure: the bottom shell of the seed metering device 1; the left shell of the seed metering device 2; the driving motor 3; the right shell of the seed metering device 4; the outer edge seed cleaning knife assembly 5; the inner edge seed cleaning knife assembly 6; the terminal seed delivery mechanism 7; the sealing ring 8; the inner chamber cavity 9; the positioning bushing 10; the power transmission device 11; the seeding shaft 12; the seeding disc 13; the soybean 14; the outer edge of the shaped hole 15; the inner edge of the shaped hole 16; the seed filling cavity 17; the seeding disc flange 18; the seed retaining plate 19; the shaped hole 20.

[0042] 201. Left shell air inlet, 501. Seed cleaning scale plate, 502. Outer edge seed cleaning adjustment handle, 503. Front pressure plate, 504. Outer edge seed cleaning knife, 505. Connecting plate, 506. Lower directional plate, 601. Blade slider, 602. Inner edge seed cleaning adjustment handle, 603. Blade holder, 604. Inner edge seed cleaning knife, 701. Seeding scale plate, 702. Seeding adjustment handle, 703. Seeding plate. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figures 1 to 9 , the present invention provides a technical solution:

[0045] A double-channel seeding device for sowing on soybean ridges, comprising a seeding device bottom shell 1, a left air distribution mechanism, a right air distribution mechanism, a left seeding disc, a right seeding disc, and a seeding shaft 12. Seed filling cavities 17 are arranged on both sides of the lower half of the seeding device bottom shell, which are respectively a left seeding cavity and a right seeding cavity. The inner bottom of the seeding device bottom shell is connected to the left seeding cavity and the right seeding cavity at the same time. The left air distribution mechanism is installed on the outer side of the left seeding cavity, and the right air distribution mechanism is installed on the outer side of the right seeding cavity. The left seeding disc and the right seeding disc are symmetrically installed on the seeding shaft respectively. The outer side of the left seeding disc corresponds to the air distribution chamber of the left air distribution mechanism, and the inner side corresponds to the left seeding cavity. The outer side of the right seeding disc corresponds to the air distribution chamber of the right air distribution mechanism, and the inner side corresponds to the right seeding cavity. The seeding shaft is connected to a power transmission mechanism.

[0046] The power transmission mechanism includes a driving mechanism and a power transmission device 11 . The power transmission device is a worm gear mechanism. The power input end of the worm gear mechanism is connected to the power output end of the driving mechanism. The power output end of the worm gear is connected to the seeding shaft 12 .

[0047] Furthermore, the driving mechanism is a driving motor 3 .

[0048] Furthermore, the driving motor 3 is fixedly mounted on the bottom shell of the seed metering device by means of bolts, the worm of the worm gear mechanism is connected to the driving motor 3 , and the worm wheel of the worm gear mechanism is connected to the seed metering shaft 12 .

[0049] Furthermore, a seed cleaning knife assembly is installed on the front side of the left seed filling cavity and the right seed filling cavity, and the seed cleaning knife assembly includes a seed cleaning scale plate 501, an outer edge seed cleaning knife assembly, and an inner edge seed cleaning knife assembly;

[0050] The outer edge seed cleaning knife assembly includes an outer edge seed cleaning adjustment handle 502, a front pressure plate 503, an outer edge seed cleaning knife 504, a connecting plate 505, and a lower directional plate 506. The seed cleaning scale plate is fixed to the seed filling cavity by bolts. The seed cleaning scale plate is provided with an upper row of arc scale holes and a side row of arc scale holes. The lower half of the outer edge seed cleaning adjustment handle is provided with two circular through holes, wherein the upper circular through hole is connected to the connecting plate by a rivet, so that the connecting plate can be linked with the outer edge seed cleaning adjustment handle, and the lower circular through hole is connected by a rivet. The outer edge seed cleaning knife is riveted to the connecting plate by rivets, and the outer edge seed cleaning knife is attached to the connecting plate by rivets. The outer edge seed cleaning knife is attached to the seeding disc and passes through the outer edge of the seeding hole when the seeding disc rotates.

[0051] The inner edge seed cleaning knife assembly includes a blade slider 601, an inner edge seed cleaning adjustment handle 602, a knife seat 603, and an inner edge seed cleaning knife 604. The inner edge seed cleaning knife is fixed to the blade slider by bolts, and the blade slider is inserted into the slide groove of the knife seat and connected to the knife seat by rivets. The inner edge seed cleaning adjustment handle is hinged to the knife seat, and the knife seat is hinged to the seed filling cavity through a pin shaft; the upper end of the inner edge seed cleaning adjustment handle is an arc-shaped positioning plug, which is inserted into the side row of arc-shaped scale holes. The inner edge seed cleaning knife sticks to the seed disc and crosses the inner edge of the seed row hole when the seed disc rotates.

[0052] Furthermore, a terminal seed delivery mechanism is installed on the rear side of the seed filling cavity, and the terminal seed delivery mechanism includes a seed dropping angle scale plate 701, a seed dropping adjustment handle 702, and a seed dropping plate 703. The seed dropping angle scale plate is fixed to the seed filling cavity by bolts, and an arc-shaped scale hole for seed dropping adjustment is provided on the seed dropping angle scale plate. The upper end of the seed dropping adjustment handle is an arc-shaped positioning plug, and the arc-shaped positioning plug is inserted into the arc-shaped scale hole for seed dropping adjustment. The seed dropping plate is located in the seed filling cavity, and the seed dropping plate is an arc-shaped plate. Two holes are provided on the upper end of the seed dropping plate, and the upper hole is connected and fixed to the lower end of the seed dropping adjustment handle as a whole, and the lower hole is hinged to the seed filling cavity through an axis.

[0053] Combined with the above-mentioned connection method, by rotating the outer edge seed cleaning adjustment handle to the scale holes at different positions of the dial, power is transmitted to the connecting plate and the outer edge seed cleaning knife in turn. The seed cleaning knife is driven by power and realizes horizontal linear movement under the limitation of the front pressure plate, the seed cleaning scale plate and the lower directional plate, thereby realizing the adjustment of the seed cleaning force of the outer edge of the seed disc hole.

[0054] By turning the inner edge seed cleaning adjustment handle to the arc-shaped scale hole on the side of the dial, power is transmitted to the blade slider. The blade slider realizes linear sliding in the knife seat slide groove under power drive, driving the inner edge seed cleaning knife to move up and down, thereby realizing the adjustment of the seed cleaning force of the inner edge of the seed row hole.

[0055] When the adjustment handle is rotated to different scale holes of the scale plate, the seeding plate hinged to the handle will rotate in the same direction along the hinge position, so that the seeding plate can be adjusted to different seeding angles.

[0056] Furthermore, a herringbone-shaped diverter seed channel is arranged at the bottom of the bottom shell of the seed meter, so that the left seed filling cavity and the right seed filling cavity are connected with the upper half space of the bottom shell of the seed meter at the same time through the herringbone-shaped diverter seed channel. The left seed filling cavity and the right seed filling cavity are both designed with seed disk flanges installed on the seeding shaft, namely the left seed disk flange and the right seed disk flange. An S-shaped rib plate is arranged on the above two seed disk flanges as a seed blocking plate, namely the left seed blocking plate and the right seed blocking plate. The outer side of the left seed blocking plate corresponds to the left seed disk, and the outer side of the right seed blocking disk corresponds to the right seed disk.

[0057] Furthermore, sealing rings are installed on the inner side of the air distribution chamber of the left air distribution mechanism and the inner side of the air distribution chamber of the right air distribution mechanism. The sealing rings are non-flexible plastic polyurethane self-lubricating structures, the outer rings are cut into arc structures, and a negative pressure groove is opened in the middle, which is sealed to the outer side edge of the left seed disc or the right seed disc.

[0058] Furthermore, the left seed disc or the right seed disc is a disc-shaped sheet metal structure, and a number of block-shaped seed disturbing teeth are evenly riveted around the outer edge. The seed disturbing teeth are right-angle bent structures, and the edges are chamfered. A regular hexagonal through hole is designed in the middle and is installed on the regular hexagonal flanges at both ends of the seed discharging shaft.

[0059] Furthermore, the seeding shaft passes through the bottom shell of the seeding device and extends to both ends of the bottom shell of the seeding device. Both ends are connected with regular hexagonal flanges and are connected to the seeding disk.

[0060] In summary, the core improvements of the present invention are as follows:

[0061] 1. A power transmission structure of a motor-worm-worm gear-seed disc shaft is provided. Compared with the traditional drive scheme, the power transmission is stable, and the vibration and sliding are small.

[0062] 2. According to the different scales of the dial, the seed cleaning knife handle can be adjusted to achieve the individual adjustment of the seed cleaning force of each seed cleaning knife, and the reliable seed cleaning of soybeans of different particle sizes can be achieved without changing the seeding disc. The angle of the seeding plate can be adjusted by the handle to achieve directional seeding of soybean seeds, avoid the randomness of the projection direction after the soybean seeds fall off the shaped hole, improve the consistency of soybean precision seeding distance, and improve the sowing quality of the soybean planter.

[0063] Except for the above improvements, other structures are all existing known technologies, so the structural components that are not particularly discussed are clear to those skilled in the art, because they are familiar with the currently disclosed existing technologies.

[0064] like Figure 1As shown, a dual-channel seeding device for sowing on soybean ridges, the lower end chamber of the seeding device bottom shell 1 is equipped with a power transmission device 11, the power transmission device is composed of a worm gear, a worm and a seeding shaft 12, the seeding shaft 12 extends to the left and right sides of the seeding device bottom shell 1 respectively, and serves as the rotation power shaft of the left and right seeding discs 13; the motor 3 is installed in the middle position of the bottom end of the seeding device bottom shell 1 and fixed with bolts, and the power output shaft of the motor 3 is connected to the worm of the power transmission device 11; the left 2 / right shell 4 of the seeding device is respectively equipped with sealing rings 8, inner chamber cavity 9 and positioning bushing 10, and fixed with bolts to form a negative pressure chamber; the outer edge seed cleaning knife assembly 5, the inner edge seed cleaning knife assembly 6 and the terminal seed delivery device 7 are respectively installed on both sides of the bottom shell 1 of the seed metering device; after the above steps are completed, a seeding disc 13 is respectively installed on the seeding shaft 12 on both sides of the bottom shell of the seed metering device, and after the installation is completed, the two seeding discs 13 rotate simultaneously with the seeding shaft 12; the left 2 / right shell 4 assembly of the seed metering device forming the negative pressure chamber is fixed on the bottom shell 1 of the seed metering device by means of bayonet pins and bolts.

[0065] The bottom shell 1 of the seed metering device has a "human" shaped seed channel built in the bottom shell, with a seed inlet at the top, a diversion seed channel in the middle, and seed filling area cavities designed on both sides of the bottom. The seed inlet is connected to the seed box, and after the seeds enter the seed inlet, they slide through the "human" shaped diversion seed channel to the seed filling area cavity at the bottom; the structure described in this paragraph belongs to the known technology of this type of product.

[0066] The two sides of the bottom shell 1 of the seeding device are designed with a seeding plate flange in the middle; and an "S"-shaped rib plate is distributed as a seed blocking plate;

[0067] The driving motor 3 is fixedly mounted on the bottom shell 1 of the seed metering device by means of bolts and is connected to the power transmission device 11 .

[0068] The power transmission device 11 is a worm gear transmission, the worm is connected to the driving motor, and the worm gear is connected to the seeding shaft 12. The motor is connected to a transmission shaft through a worm gear mechanism, which is a conventional known technology in the mechanical field. The present invention only utilizes this transmission mechanism, so the overall solution combined with the seeding machine of the present invention is a creative invention technology, so this transmission mechanism itself does not need to provide a specific drawing or a specific connection method, because it is only for a technical solution that the motor is connected to a transmission shaft through a worm gear mechanism, and those skilled in the art are clear.

[0069] The left air distribution mechanism and the right air distribution mechanism are both existing well-known technologies. The present invention only adds a sealing ring to the air distribution chamber. The left air distribution mechanism includes a left shell 2 of the seed meter, an inner chamber cavity, a sealing ring, a positioning bushing, etc. The left air distribution mechanism has the same structure. The left shell 2 of the seed meter and the right shell 4 of the seed meter are circular cavity cast aluminum structures; the left shell 2 and the right shell 4 are symmetrical structures, which are the installation carriers of the sealing ring 8, the inner chamber cavity 9 and the positioning bushing 10; after being assembled with the above components, a negative pressure chamber is formed on the shell, and the whole is fixedly installed on the bottom shell 1 of the seed meter by a bayonet and bolts.

[0070] The sealing ring 8 is a non-flexible plastic polyurethane self-lubricating structure, the outer ring is cut into an arc structure, a negative pressure groove is opened in the middle, and is fixed to the left shell 2 and the right shell 4 with the inner chamber cavity 9 and the positioning bushing 10 by bolts.

[0071] The seeding disc 13 is a disc-shaped sheet metal structure, with a number of block-shaped seed disturbing teeth evenly riveted around the outer edge. The seed disturbing teeth are a right-angle bending structure with chamfered edges, which form disturbances on the seeds during rotation to ensure reliable seed filling performance of the seeding device. It is installed on the bottom shell 1 of the seeding device through the middle positioning hole in cooperation with the seeding shaft 12, and forms a negative pressure area by cooperating with the left 2 / right shell 4 of the seeding device to complete the adsorption of seeds in the seed filling area.

[0072] The outer edge seed cleaning knife assembly 5 is installed on both sides of the seed metering device bottom shell 1, and includes: a seed cleaning scale plate 501, an outer edge seed cleaning adjustment handle 502, a front pressure plate 503, an outer edge seed cleaning knife 504, a connecting plate 505 and a lower directional plate 506. All of them are sheet metal structures, and are connected by riveting to form an assembly. The outer edge seed cleaning blade 504 is a rectangular arc incision structure, and a transition chamfer is opened at the arc inlet to form a cutting edge. During the working process, the blade is close to the seed metering disk 13, so as to realize reliable cleaning of the seeds at the outer edge of the shaped hole. During the operation of the seed meter, the operator turns the adjustment handle to the scale holes at different positions on the scale plate according to the seed filling status during the rotation of the seeding disc. With the rotation of the adjustment handle, the connecting plate is driven to move in the plane in turn. The connecting plate continues to drive the outer edge seed cleaning knife to achieve horizontal linear movement under the limit of the front pressure plate, the lower line plate and the scale plate. The blade of the seed cleaning knife covers the upper edge of the seeding disc hole to clean the seeds adsorbed on the hole and rotating with the seeding disc, so as to reduce reseeding and improve the sowing single seed rate of the seed meter. In this seeding method, the operator can achieve multi-level adjustment of the seed cleaning force at the outer edge of the hole according to the seed filling situation.

[0073] The inner edge seed cleaning knife assembly 6 includes a blade slider 601, an inner edge seed cleaning adjustment handle 602, a knife seat 603, an inner edge seed cleaning knife 604, etc. The inner edge seed cleaning knife 604 is a right-angle bent L-shaped structure with a special-shaped cutting edge on one side. During operation, the cutting edge is close to the seeding disc 13 to achieve reliable cleaning of seeds at the inner edge of the shaped hole. During the operation of the seeding device, the operator rotates the adjustment handle to the scale holes at different positions of the scale plate according to the seed filling state during the rotation of the seeding disc. With the rotation of the adjustment handle, the blade slider slides linearly in the knife seat slide groove with the rotation of the handle, and at the same time drives the inner edge seed cleaning knife to move up and down, thereby adjusting the seed cleaning force of the inner edge of the seeding shaped hole.

[0074] The above-mentioned outer edge seed cleaning knife assembly and inner edge seed cleaning knife assembly share a scale plate, and the seed cleaning force is adjusted by adjusting the handle. The combined use of the two components can achieve double-sided and multi-stage seed cleaning of the seed disc holes, improve the adaptability of the seed disc to seeds of different sizes, increase the single-grain rate of the seed meter, and improve the seeding performance.

[0075] The terminal seed delivery mechanism 7, including a seeding angle dial 701, a seeding adjustment handle 702 and a seeding plate 703, is fixed on the bottom shell 1 of the seeding device by bolts. The angle of the seeding plate 703 is changed by adjusting the seeding adjustment handle 702. The seeding plate uses its own arc side and real-time angle to achieve directional delivery of soybean seeds after they fall off the molded holes. After the seeds of the traditional seeding device fall off the molded holes, they mainly rely on gravity to fall. During the seeding process, the seeding positions are disordered and the seeding angles are disordered, which easily causes uneven plant spacing after sowing. After using the seeding mechanism, the seeding angle and position of the seeds after they fall off the molded holes are corrected with the help of the arc surface of the seeding plate, which plays a role in directional delivery of the seeds, and has a significant effect on ensuring the consistency of plant spacing after sowing and reducing the coefficient of variation of grain spacing.

[0076] The left shell or the right shell of the seed metering device is a cast aluminum, circular cavity structure, which is installed in conjunction with the inner chamber cavity, the sealing ring and the positioning bushing to form a negative pressure cavity. The shell air inlet is connected to the fan through a plastic hose.

[0077] The seeding disc is a disc-shaped sheet metal structure, with several block-shaped seed disturbing teeth evenly riveted around the outer edge. The seed disturbing teeth are right-angle bent structures with chamfered edges, which form disturbances on the seeds during rotation to ensure reliable seed filling performance of the seed meter. A regular hexagonal through hole is designed in the middle, which is installed on the bottom shell of the seed meter in conjunction with the seeding shaft, and forms a negative pressure area in conjunction with the negative pressure chamber of the left / right shell of the seed meter to complete the adsorption of seeds in the seed filling area.

[0078] The outer-edge seed cleaning knife has a structure of a rectangular shape with an arc-shaped notch. A transitional chamfer is formed at the arc inlet to form a cutting edge, and during the working process, the cutting edge closely adheres to the seed metering disc. The inner-edge seed cleaning knife has a right-angled bent L-shaped structure, with an arc-shaped cutting edge on one side. During the working process, the cutting edge closely adheres to the seed metering disc to reliably clean the seeds at the inner edge of the die hole. By adjusting the handle of the seed cleaning knife according to different scales on the dial, the cleaning force of each seed cleaning knife can be individually adjusted, and reliable seed cleaning of soybeans with different particle sizes can be achieved without replacing the seed metering disc.

[0079] The end seed delivery mechanism adjusts the seed delivery angle of the seed delivery plate by adjusting the handle to correspond to different hole positions on the seed delivery angle dial.

[0080] The seed delivery plate has a sheet metal bent structure. The L-shaped side of the seed delivery plate is a quasi-circular arc curved surface, and the directional delivery of soybean seeds falling off from the die hole is realized by means of this curved surface and the real-time angle.

[0081] The working process of the present invention is as follows:

[0082] 1) After the soybean seeds fall from the seed box, they enter the common seed inlet of the bottom shell 1 of the seed metering device, and are respectively drained to the seed filling areas on the left and right sides of the bottom shell of the seed metering device through the "inverted" shaped seed channels in the bottom shell.

[0083] 2) During operation, the fan is respectively connected to the air inlet channels 201 of the left housing 2 and the air inlet channels 404 of the right housing 4 through plastic hoses and interfaces. The negative pressure air flow enters the negative pressure cavity. Along with the seed metering disc 13 fitting with the sealing ring 8, a pressure gradient force is formed at the die hole position. The soybeans in the seed filling area are adsorbed on the die holes of the seed metering disc 13 by using the negative pressure.

[0084] 3) The motor 3 starts to work, and the power is sequentially transmitted to the power transmission device 11 and the seed metering shaft 12. The seed metering disc 13 rotates counterclockwise along with the seed metering shaft 12. The soybean seeds in the seed filling area are continuously adsorbed on the die holes of the seed metering disc 13 and rotate counterclockwise along with the seed metering disc 13 to complete the seed filling process.

[0085] 4) Along with the rotation of the seed metering disc 13, the die holes sequentially pass through the outer-edge seed cleaning knife assembly 5 and the inner-edge seed cleaning knife assembly 6 to complete the seed cleaning process.

[0086] 4) When the seed metering disc 13 continues to rotate, when the die holes on the seed metering disc 13 rotate out of the negative pressure cavity, the soybean seeds fall off from the die holes under the action of gravity and the initial velocity, and then under the action of the end seed delivery device 7, the projection angle and speed are adjusted to complete the seed dropping.

[0087] The above-mentioned power transmission device 11 has a worm and worm gear structure, but is not limited to this structure.

[0088] All parts and components not discussed in detail in this application and the connection methods of the parts and components in this application belong to the well-known technology in this technical field and will not be described in detail, such as welding, threaded connection, etc.

[0089] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0090] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0091] In the description of this specification, 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 invention. 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.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-channel seeding device for sowing on soybean ridges, comprising a seeding device bottom shell, a left air distribution mechanism, a right air distribution mechanism, a left seeding disc, a right seeding disc, and a seeding shaft. Seed filling cavities are arranged on both sides of the lower half of the seeding device bottom shell, namely a left seeding cavity and a right seeding cavity. The inner bottom of the seeding device bottom shell is connected to the left seeding cavity and the right seeding cavity at the same time. The left air distribution mechanism is installed on the outer side of the left seeding cavity, and the right air distribution mechanism is installed on the outer side of the right seeding cavity. The left seeding disc and the right seeding disc are symmetrically installed on the seeding shaft respectively. The outer side of the left seeding disc corresponds to the air distribution chamber of the left air distribution mechanism, and the inner side corresponds to the left seeding cavity. The outer side of the right seeding disc corresponds to the air distribution chamber of the right air distribution mechanism, and the inner side corresponds to the right seeding cavity. The seeding shaft is connected to a power transmission mechanism. It is characterized in that The front sides of the left seed filling cavity and the right seed filling cavity are both equipped with seed cleaning knife assemblies, which include a seed cleaning scale plate, an outer edge seed cleaning knife assembly, and an inner edge seed cleaning knife assembly; The outer edge seed cleaning knife assembly includes an outer edge seed cleaning adjustment handle, a front pressure plate, an outer edge seed cleaning knife, a connecting plate, and a lower directional plate. The seed cleaning scale plate is fixed to the seed filling cavity by bolts. The seed cleaning scale plate is provided with an upper row of arc scale holes and a side row of arc scale holes. Two circular through holes are provided in the lower half of the outer edge seed cleaning adjustment handle, wherein the upper circular through hole is connected to the connecting plate by a rivet, so that the connecting plate can move together with the outer edge seed cleaning adjustment handle, and the lower circular through hole is hinged to the front pressure plate by a rivet. The circular through hole is used as the center of the circle for the outer edge seed cleaning adjustment handle to swing. The upper end of the outer edge seed cleaning adjustment handle is an arc-shaped positioning plug, which is inserted into the upper row of arc-shaped scale holes; the front pressing plate is connected to the lower directional plate and the seed cleaning scale plate as a whole through rivets, and the lower directional plate and the scale plate clamp the outer edge seed cleaning knife with the help of upper and lower surfaces, and the seed cleaning knife is positioned through the lower surface of the front pressing plate, and the outer edge seed cleaning knife is riveted and positioned with the connecting plate through rivets, and the outer edge seed cleaning knife sticks to the seeding disk and passes the outer edge of the seeding row hole when the seeding disk rotates; The terminal seed delivery mechanism is installed on the rear side of the seed filling cavity, and the terminal seed delivery mechanism includes a seed dropping angle scale plate, a seed dropping adjustment handle, and a seed dropping plate. The seed dropping angle scale plate is fixed to the seed filling cavity by bolts, and an arc-shaped scale hole for seed dropping adjustment is provided on the seed dropping angle scale plate. The upper end of the seed dropping adjustment handle is an arc-shaped positioning plug, and the arc-shaped positioning plug is inserted into the arc-shaped scale hole for seed dropping adjustment. The seed dropping plate is located in the seed filling cavity, and the seed dropping plate is an arc-shaped plate. Two holes are provided on the upper end of the seed dropping plate. The upper hole is connected and fixed to the lower end of the seed dropping adjustment handle as a whole, and the lower hole is hinged to the seed filling cavity through an axis.

2. A dual-channel seed metering device for soybean ridge sowing according to claim 1, characterized in that: The power transmission mechanism includes a driving mechanism and a power transmission device. The power transmission device is a worm gear mechanism. The power input end of the worm gear mechanism is connected to the power output end of the driving mechanism. The power output end of the worm gear is connected to the seeding shaft. The driving mechanism is a driving motor.

3. A dual-channel seed metering device for soybean ridge sowing according to claim 2, characterized in that: The driving motor is fixedly mounted on the bottom shell of the seed metering device through bolts, the worm of the worm gear mechanism is connected with the driving motor, and the worm wheel of the worm gear mechanism is connected with the seed metering shaft.

4. A dual-channel seed metering device for sowing soybean on ridges according to claim 1, 2 or 3, characterized in that: The inner edge seed cleaning knife assembly includes a blade slider, an inner edge seed cleaning adjustment handle, a knife seat, and an inner edge seed cleaning knife. The inner edge seed cleaning knife is fixed to the blade slider by bolts, the blade slider is inserted into the slide groove of the knife seat, and is connected to the knife seat by rivets, the inner edge seed cleaning adjustment handle is hinged to the knife seat, and the knife seat is hinged to the seed filling cavity through a pin shaft; the upper end of the inner edge seed cleaning adjustment handle is an arc-shaped positioning plug, and the arc-shaped positioning plug is inserted into the side row of arc-shaped scale holes, the inner edge seed cleaning knife sticks to the seed disc and crosses the inner edge of the seed row hole when the seed disc rotates.

5. A dual-channel seed metering device for soybean ridge sowing according to claim 1, 2 or 3, characterized in that: A herringbone-shaped diverter seed channel is arranged at the bottom of the bottom shell of the seed meter, so that the left seed filling cavity and the right seed filling cavity are connected with the upper half space of the bottom shell of the seed meter through the herringbone-shaped diverter seed channel at the same time. The left seed filling cavity and the right seed filling cavity are designed with seed disk flanges installed on the seeding shaft, which are the left seed disk flange and the right seed disk flange respectively. An S-shaped rib plate is arranged on the above two seed disk flanges as a seed blocking plate, which are the left seed blocking plate and the right seed blocking plate respectively. The outer side of the left seed blocking plate corresponds to the left seed disk, and the outer side of the right seed blocking disk corresponds to the right seed disk.

6. A dual-channel seed metering device for sowing soybean on ridges according to claim 1, 2 or 3, characterized in that: Sealing rings are installed on the inner side of the air distribution chamber of the left air distribution mechanism and the inner side of the air distribution chamber of the right air distribution mechanism. The sealing rings are non-flexible plastic polyurethane self-lubricating structures. The outer rings are cut into arc structures with a negative pressure groove in the middle, which are sealed to the outer side edge of the left seed disc or the right seed disc.

7. A dual-channel seed metering device for sowing soybean on ridges according to claim 1, 2 or 3, characterized in that: The left seeding disc or the right seeding disc is a disc-shaped sheet metal structure, and a number of block-shaped seed disturbing teeth are evenly riveted around the outer edge. The seed disturbing teeth are a right-angle bending structure, with chamfered edges and a regular hexagonal through hole designed in the middle to be installed on the regular hexagonal flanges at both ends of the seeding shaft.

8. A dual-channel seed metering device for sowing soybean on ridges according to claim 1, 2 or 3, characterized in that: The seeding shaft penetrates through the bottom shell of the seeding device and extends to two ends of the bottom shell of the seeding device. The two ends are connected with regular hexagonal flanges and are connected with the seeding disc.

Images