Height-adjustable seed guide device and seed sowing device

Abstract

The height-adjustable seed guide device comprises the seed-metering device, a seed guide cavity and an annular seed guide belt, a seed-metering opening of the seed-metering device is communicated with one end of the seed guide cavity, a guide wheel is arranged in the seed guide cavity, a driving wheel is arranged on a driving shaft of the seed-metering device, the annular seed guide belt is wound on the guide wheel and the driving wheel, and the annular seed guide belt is connected with the seed-metering opening of the seed-metering device. The annular seed guiding belt and the guiding wheel rotate along with the driving wheel, seeds discharged from the seed discharging opening are conveyed to the other end of the seed guiding cavity from one end of the seed guiding cavity, at least two partition plates are arranged on the annular seed guiding belt, the partition plates and the annular seed guiding belt are in clearance fit with the inner wall of the seed guiding cavity, and the annular seed guiding belt is in clearance fit with the inner wall of the seed guiding cavity. A conveying cavity is formed among the two partition plates, the annular seed guide belt and the inner wall of the seed guide cavity, and the partition plates are arranged at equal intervals; the seed sowing device is modified on the basis of an existing seed sowing device, multiple seeds can be sown at a time by changing the number of the partition plates on the annular seed guide belt, the seed falling height is reduced, and the seed distance is uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of agriculture, in particular to a seed guiding device and a seed metering device with adjustable height. Background Art

[0002] At present, the seeding point of domestic seed drills is generally high. In actual practice, the seeds fall from the seed meter under the action of gravity. When moving along the seed guide tube, the seeds collide with the inner wall of the seed guide tube, causing the time for the seeds to fall into the seed furrow to change, resulting in a large coefficient of variation in the particle distance between seeds sown in the soil after sowing and a low qualified index.

[0003] The Chinese patent publication number is CN 205196280 U, which discloses an extended seed guide belt nail seed metering device. A seed filling and discharging drive shaft and a support shaft are arranged parallel to each other on the upper and lower parts of the seed metering device housing. The nail-type drive wheel is fixedly mounted on the seed filling and discharging drive shaft, the guide wheel is sleeved on the support shaft, and the partition cavity type annular seed guide belt is sleeved on the nail-type drive wheel and the guide wheel. The spacing dimension H between the axis center line of the seed filling and discharging drive shaft and the axis center line of the support shaft is 380-520 mm. The extended seed guide belt nail seed metering device is thus formed, which not only greatly reduces the height position of the seeding point of the partition cavity type annular seed guide belt, but also is controlled by the partition cavity type annular seed guide belt throughout the seed discharge process. At the same time, the traditional seed guide cylinder structure is eliminated, and the device has the characteristics of reasonable parameters, simple structure, high seeding spacing qualification rate, good seeding operation quality, and wide application range.

[0004] However, the height of the seed metering device of this structure is too high, resulting in increased costs, and it can only sow one seed at a time and cannot sow multiple seeds at the same time. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing seed metering device cannot realize the sowing operation of multiple seeds at the same time.

[0006] The seed guide belt is connected to the seed discharging opening of the seed discharging device and the seed guide cavity, and the guide wheel is provided in the seed discharging opening of the seed discharging device, and the guide wheel is provided on the driving shaft of the seed discharging device. The guide wheel is wound around the guide wheel and the driving wheel, so that the guide wheel and the guide wheel rotate along with the driving wheel, and the seeds discharged from the seed discharging opening are transported from one end of the seed guide cavity to the other end of the seed guide cavity. The invention is characterized in that at least two partitions are provided on the endless seed guide belt, the partitions are detachably connected or fixedly connected to the endless seed guide belt, the partitions and the endless seed guide belt are gap-matched with the inner wall of the seed guide cavity, a conveying cavity is formed between the two partitions, the endless seed guide belt and the inner wall of the seed guide cavity, the spacing between the partitions is the same, and the number of seeds stored in the same conveying cavity can be adjusted by changing the number of partitions to adjust the size of the spacing between the partitions;

[0007] The seed metering device is connected with a transmission, and the output shaft of the transmission is coaxially connected with the driving shaft of the seed metering device.

[0008] Furthermore, two seeds are stored in the same conveying cavity.

[0009] Furthermore, the annular seed guide belt is a chain, the driving wheel and the guide wheel are sprockets, and the partition is arranged on the chain through a chain pin.

[0010] Furthermore, the annular seed guide belt is a rubber belt, and the partition and the rubber belt are an integral structure or are detachably connected via pins.

[0011] Furthermore, the distance between the axis centerline of the guide wheel and the axis centerline of the drive shaft is 200-360 mm.

[0012] Furthermore, the seed metering device is a nail-type seed metering device or a spoon-wheel-type seed metering device.

[0013] Furthermore, the partition is provided with grooves for storing seeds.

[0014] In order to solve the above technical problems, another technical solution provided by the utility model is: a height-adjustable seed meter, including a seed meter, and the seed meter is an adjustable height seed guide device as described above, which is characterized in that: two of the seed meters are arranged side by side, and the driving shafts of the two seed meters are coaxially connected for synchronous rotation.

[0015] Furthermore, the annular seed guide belts in the two seed metering devices are installed in a rotationally staggered manner, so that a stagger is formed between the two originally corresponding conveying cavities in the two seed metering devices.

[0016] The beneficial effects of the utility model are:

[0017] The present application is modified on the basis of the existing seed metering device. By changing the number of partitions on the annular seed guide belt, the size of the spacing between the partitions is adjusted to adjust the number of seeds stored in the same conveying cavity, so that multiple seeds can be sown at one time, preferably two seeds, to change the planting structure; when the partition and the annular seed guide belt are detachably connected, there is no need to remove the annular seed guide belt, only the number of partitions needs to be changed; when the partition and the annular seed guide belt are fixedly connected, it is necessary to replace the annular seed guide belt with a different number of partitions; the distance between the axis centerline of the guide wheel and the axis centerline of the drive shaft is 200-360mm, which can be directly connected to the sowing furrow opener, reducing the seed drop height, reducing the coefficient of variation of the particle distance of the seeds sown into the soil after sowing, and also increasing the height of the seed metering device, reducing the problem of congestion at the seed metering device during no-till sowing; a groove for storing seeds is provided on the partition, and the seeds in the conveying cavity can fall into the groove for transportation, reducing the probability of friction between the seeds and the inner wall of the conveying cavity, thereby reducing damage to the seed coating.

[0018] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only four of the drawings in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of this application.

[0021] Figure 2 This is a structural schematic diagram of an annular seed guide belt.

[0022] Figure 3 Schematic diagram of another structure of the annular seed guide belt.

[0023] Figure 4 Schematic diagram of the structure of the nail.

[0024] In the figure, 1-seeder, 2-seeder chamber, 3-annular seed guide belt, 4-seeder port, 5-drive shaft, 6-partition, 7-transmission, 8-drive wheel, 9-guide wheel, 10-nail, 11-bottom plate, 12-cover plate, 13-bolt. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0026] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0027] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes and are not used to limit the scope of these messages or information. Example 1

[0028] like Figure 1-4As shown, a height-adjustable seed guide device includes a seed meter 1, a seed guide cavity 2 and an annular seed guide belt 3. The seed meter 1 is a nail-type seed meter or a spoon wheel-type seed meter. The seed meter 1 is preferably a nail-type seed meter. The seed discharge port 4 of the seed meter 1 is connected to one end of the seed guide cavity 2. A guide wheel 9 is provided in the seed guide cavity 2. A drive wheel 8 is provided on the drive shaft 5 of the seed meter 1. The annular seed guide belt 3 is wound around the guide wheel 9 and the drive wheel 8, so that the annular seed guide belt 3 and the guide wheel 9 rotate with the drive wheel 8, and the seeds discharged from the seed discharge port 4 are transported from one end of the seed guide cavity 2 to the other end of the seed guide cavity 2. At least two partitions 6 are provided on the annular seed guide belt 3. The annular seed guide belt 3 is a rubber belt. The partition 6 and the rubber belt are an integral structure or are connected by pins. The connection is detachable, and the partition 6 and the annular seed guide belt 3 are matched with the inner wall of the seed guide cavity 2. A conveying cavity is formed between the two partitions 6, the annular seed guide belt 3 and the inner wall of the seed guide cavity 2. The spacing between the partitions 6 is the same. By changing the number of partitions 6, the size of the spacing between the partitions 6 is adjusted to adjust the number of seeds stored in the same conveying cavity; when the partition 6 and the annular seed guide belt 3 are fixedly connected, it is necessary to replace the annular seed guide belt 3 with a different number of partitions 6, thereby adjusting the size of the spacing between the partitions 6 to adjust the number of seeds stored in the same conveying cavity, so that multiple seeds can be sown at one time, and the planting structure can be changed. Among them, it is preferred that two seeds are stored in one conveying cavity, and two seeds can be sown at one time, realizing a sowing mode of two plants in one hole.

[0029] The seed guiding chamber 2 is formed by a bottom plate 11 and a cover plate 12 which are integrally formed with the seed meter 1 and are detachably connected by bolts 13, so that the cover plate 12 can be disassembled to adjust the number of the internal partitions 6 for easy operation.

[0030] Among them, the seed metering device 1 is connected to a transmission 7, and the output shaft of the transmission 7 is coaxially connected to the drive shaft 5 of the seed metering device 1; the drive shaft 5 of the seed metering device 1 is directly coaxially connected to the output shaft of the transmission 7, the structure is simple, and the structural complexity caused by the chain transmission connection in the prior art is reduced.

[0031] Among them, the distance between the axis center line of the guide wheel 9 and the axis center line of the drive shaft 5 is 200-360mm, preferably 255mm; it can be directly connected to the sowing furrow opener to reduce the seed drop height, reduce the coefficient of variation of the grain distance of seeds sown into the soil after sowing, and increase the height of the seed meter 1, reducing the problem of congestion at the seed meter 1 during no-till sowing. Example 2

[0032] like Figure 2 and 3As shown, this embodiment is obtained by changing the technical features such as the annular seed guide belt 3 on the basis of the embodiment one. The remaining technical features are the same as those of the embodiment one, and the similarities are not repeated here. Among them, the difference between this embodiment and the embodiment one is that: the annular seed guide belt 3 is a chain, the driving wheel 8 and the guide wheel 9 are sprockets, and the partition 6 is set on the chain through a chain pin.

[0033] In this embodiment, chain sprocket transmission is used to prevent slipping during use and ensure sowing accuracy. When the partition 6 and the annular seed guide belt 3 are detachably connected, there is no need to remove the annular seed guide belt 3, and it is only necessary to change the number of partitions 6 through the chain pin. Example 3

[0034] This embodiment is obtained by adding technical features such as grooves on the basis of Example 2. The remaining technical features are the same as those of Example 1, and the similarities are not repeated here. Among them, the difference between this embodiment and Example 1 is that a groove for storing seeds is provided on the partition 6.

[0035] In this embodiment, a groove for storing seeds is provided on the partition 6, and the seeds in the conveying cavity can fall into the groove for conveying. During the process of conveying the seeds, the opening of the groove is always kept in an upward state, so that the seeds do not contact the inner wall of the conveying cavity, reducing the probability of friction between the seeds and the inner wall of the conveying cavity, thereby reducing damage to the seed coating.

[0036] Among them, using two seeding devices 1 disclosed in the above embodiment side by side forms another technical solution disclosed in the present application, which is: a height-adjustable seeding device, including a seeding device 1, wherein the seeding device 1 is the above-mentioned extended seeding device with adjustable seeding quantity, the two seeding devices 1 are arranged side by side, and the driving shafts 5 of the two seeding devices 1 are coaxially connected for synchronous rotation; the specific driving shafts 5 of the two seeding devices 1 can be replaced by a through shaft or connected by a coupling, and it is only necessary to adjust the transmission part according to the actual situation when in use to transmit power to the transmission 7, which can be selected from sprocket drive, drive shaft drive, motor or hydraulic motor drive.

[0037] Since the two seed-metering devices 1 are arranged side by side, the installation rotation angle of the chains in the two seed-metering devices 1 can be adjusted to form a misalignment between the corresponding conveying cavities on the two chains (there is no misalignment between the rotating shafts in the two seed-metering devices 1, and there is no misalignment between the seed-seeding plates in the two seed-metering devices 1), so that the seeds in the two conveying cavities are discharged from the bottom of the seed guide cavity 2 with a time difference, so that the two rows of seeds falling on the ground are misaligned, and the number of seeds in each hole in each row of seeds can be adjusted, forming a two-row, one-hole, two-plant staggered sowing as a whole; specifically, there are two corresponding conveying cavities A and A' on the two chains, and after the chain in one seed-metering device 1 is rotated and installed in a staggered manner, a misalignment is formed between the two conveying cavities A and A', from corresponding to non-corresponding, so that the seeds in the two conveying cavities A and A' are discharged from the bottom of the seed guide cavity 2 at different times, forming two misaligned rows of seeds on the ground.

[0038] The process of using the overall technical solution formed by the above embodiments is as follows:

[0039] The transmission 7 transmits power to the drive shaft 5 of the seed metering device 1, and the drive shaft 5 drives the nail 10 in the seed metering device 1 to rotate and the drive wheel 8 to rotate, thereby realizing the synchronous rotation of the annular seed guide belt 3, and the rotating nail 10 discharges a seed from the seed outlet 4 of the seed metering device 1, and the discharged seed falls into the conveying cavity corresponding to the seed outlet 4. When a conveying cavity corresponds to multiple nails 10, multiple seeds discharged from the seed outlet 4 of the seed metering device 1 fall into the same conveying cavity in turn, and when the conveying cavity carries the seeds to the guide wheel 9 at the bottom of the seed guide cavity 2, the seeds fall from the conveying cavity at the same time and fall into the soil.

[0040] Among them, the sowing mode of two plants in one hole is: when one conveying cavity corresponds to two nails 10, the two seeds discharged from the seed discharge port 4 of the seed meter 1 fall into the same conveying cavity in turn. When the conveying cavity carries the seeds to the guide wheel 9 at the bottom of the seed guide cavity 2, the two seeds fall from the conveying cavity at the same time and fall into the soil, completing the sowing operation.

[0041] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. A height-adjustable seed guide device, comprising a seed meter, a seed guide chamber, and an annular seed guide belt, wherein a seed discharge port of the seed meter is connected to one end of the seed guide chamber, a guide wheel is provided in the seed guide chamber, a drive wheel is provided on a drive shaft of the seed meter, and the annular seed guide belt is wound around the guide wheel and the drive wheel, so that the annular seed guide belt and the guide wheel rotate with the drive wheel, and the seeds discharged from the seed discharge port are transported from one end of the seed guide chamber to the other end of the seed guide chamber, characterized in that: At least two partitions are provided on the annular seed guide belt, and the partitions are detachably connected or fixedly connected to the annular seed guide belt. The partitions and the annular seed guide belt are in clearance with the inner wall of the seed guide cavity. A conveying cavity is formed between the two partitions, the annular seed guide belt and the inner wall of the seed guide cavity. The spacing between the partitions is the same. By changing the number of partitions and adjusting the size of the spacing between the partitions, the number of seeds stored in the same conveying cavity can be adjusted; The seed metering device is connected with a transmission, and the output shaft of the transmission is coaxially connected with the driving shaft of the seed metering device.

2. The height-adjustable seed guide device according to claim 1, characterized in that: Two seeds are stored in the same conveying cavity.

3. A height-adjustable seed guide device according to any one of claims 1 or 2, characterized in that: The annular seed guide belt is a chain, the driving wheel and the guide wheel are sprockets, and the partition is arranged on the chain through a chain pin.

4. The height-adjustable seed guide device according to claim 1, characterized in that: The annular seed guide belt is a rubber belt, and the partition plate and the rubber belt are an integral structure or are detachably connected via pins.

5. The height-adjustable seed guide device according to claim 1 or 2, characterized in that: The distance between the axis center line of the guide wheel and the axis center line of the drive shaft is 200-360mm.

6. The height-adjustable seed guide device according to claim 4, characterized in that: The seed metering device is a nail type seed metering device or a spoon wheel type seed metering device.

7. The height-adjustable seed guide device according to claim 5, characterized in that: The partition is provided with grooves for storing seeds.

8. A height-adjustable seed metering device, comprising a seed metering device, wherein the seed metering device is a height-adjustable seed guide device according to any one of claims 1 to 7, characterized in that: The two seed-metering devices are arranged side by side, and the driving shafts of the two seed-metering devices are coaxially connected to rotate synchronously.

9. The height-adjustable seed metering device according to claim 8, characterized in that: The annular seed guide belts in the two seed metering devices are installed in a rotationally staggered manner, so that a stagger is formed between the two originally corresponding conveying cavities in the two seed metering devices.

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