Double bevel guide filling and active extrusion seed meter

Abstract

The application discloses a double-inclined-surface guiding filling and active extruding seed metering device, which comprises a front cover plate, a seed protection shell and a rear shell, the seed protection shell and the rear shell are both circular cover structures, the seed protection shell is located in the rear shell, the front cover plate is fixed at the front end of the seed protection shell and the rear shell, the front surface of the front cover plate is provided with a seed inlet channel, the lower part of the front cover plate is provided with a seed discharge port, the seed inlet channel is communicated with the seed discharge port, and the rear shell and the lower left part of the seed protection shell are provided with a seed discharge port correspondingly; the double-inclined-surface guiding filling and active extruding seed metering device can adapt to high-speed operation of a machine, realizes rapid and reliable filling and forced seed metering of materials such as soybeans and corn, improves the working performance of the mechanical precision seed metering device, optimizes the structure of the traditional mechanical seed metering device according to the interaction relationship between force and constraint, has the characteristics of reliable structure, strong filling capacity and strong high-speed operation adaptability, improves the seed metering performance, helps to promote the development of the mechanical high-speed precision seed metering technology and equipment, and has a good application prospect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of agricultural machinery, and particularly relates to a double-inclined-surface guiding filling and active extruding type seed sowing device. BACKGROUND

[0002] High-speed precision seeding technology has become the development direction and trend of modern seeding technology. The precision seed sowing device is the core working component of the precision seeding technology. In recent years, in order to improve the working efficiency and thus improve the machine operation speed, the seeding precision of the mechanical precision seed sowing device is continuously reduced, which cannot fully meet the requirements of the precision seeding operation, seriously affects the application of the mechanical seed sowing device, and causes the seeding precision of the mechanical precision seed sowing device to be reduced. The main reason for the reduction of the seeding precision of the mechanical precision seed sowing device is that the filling effect is greatly affected by vibration during operation. With the continuous improvement of the operation speed, the vibration seriously affects the seeding capacity of the mechanical precision seed sowing device. Further analysis of the filling process shows that the vibration of the seed causes multiple seeds to be located at the filling port at the same time, which cannot normally enter the type hole. Further analysis of the seed throwing process shows that due to the different working speeds of the seed sowing device and the different sizes of the seeds, the movement tracks of the seeds after entering the seed guide pipe are quite different, which finally affects the uniformity of the seed spacing. SUMMARY

[0003] The present application aims to provide a double-inclined-surface guiding filling and active extruding type seed sowing device, which solves the technical problem of the reduction of the seeding precision of the mechanical precision seed sowing device and the inability to meet the requirements of the precision seeding operation in the prior art.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] A double-inclined-surface guiding filling and active extruding type seed sowing device, comprising a front cover plate, a seed protection shell and a rear shell, the seed protection shell and the rear shell are both circular cover structures, the seed protection shell is located in the rear shell, the front cover plate is fixed at the front end of the seed protection shell and the rear shell, the front surface of the front cover plate is provided with a seed inlet channel, the lower part of the front cover plate is provided with a seed discharge port, the seed inlet channel is in communication with the seed discharge port, and the rear shell and the lower left side of the seed protection shell are provided with a seed sowing port in correspondence.

[0006] The precision seed sowing mechanism is arranged in the seed protection shell, and comprises a transmission disc, a seed guiding ring, a transmission shaft, a front seed sowing ring and a rear seed sowing disc. The transmission shaft is rotatably arranged on the front cover plate, the seed protection shell and the rear shell through bearings, and the axes of the transmission shaft, the seed protection shell and the rear shell coincide. A rear cover is further fixed on the rear side of the rear shell, and the transmission shaft is rotatably connected to the rear cover through a bearing. The transmission disc is arranged on the transmission shaft, and the seed guiding ring is fixed on the transmission disc. The front seed sowing ring and the rear seed sowing disc are fixed on the rear surface of the front cover plate. The front seed sowing ring and the rear seed sowing disc are located in the seed guiding ring. The outer edge of the rear seed sowing disc is the rear seed sowing ring. The outer diameters of the front seed sowing ring and the rear seed sowing ring are equal to the inner diameter of the seed guiding ring. Notches are arranged on the lower right sides of the front seed sowing ring and the rear seed sowing ring. Three baffles are further fixed on the inner circle of the front seed sowing ring and the rear seed sowing ring. The three baffles are arranged in the radial direction. The three baffles are sequentially a first baffle, a second baffle and a third baffle in the counterclockwise direction. A pin hole is arranged on each baffle.

[0007] Two seed sowing ring rings are arranged on the seed guiding ring in parallel. Each seed sowing ring ring comprises a plurality of seed sowing holes. The seed sowing holes are uniformly arranged on the seed guiding ring in the circumferential direction. The seed sowing holes of the two seed sowing ring rings are arranged in a staggered manner. A seed guiding groove is connected between two corresponding seed sowing holes. The seed guiding groove is an overall convex arc structure. The front seed sowing ring and the rear seed sowing ring correspond to the two seed sowing ring rings respectively. The front seed sowing ring and the rear seed sowing ring block the two seed sowing ring rings respectively. A seed filling area and a seed cleaning area are formed between the first baffle and the second baffle in the seed guiding ring. The seed cleaning area is located above the seed filling area. The notches on the lower right sides of the front seed sowing ring and the rear seed sowing ring are located in the seed filling area and the seed cleaning area. A seed carrying area is formed between the second baffle and the third baffle in the seed guiding ring. A seed sowing area is formed between the third baffle and the first baffle in the seed guiding ring. The seed sowing port on the lower left side of the rear shell and the seed protection shell corresponds to the seed sowing area.

[0008] Further, a convex ring is arranged at the rear end of the seed guiding ring. An annular groove is arranged on the outer edge of the transmission disc. The convex ring of the seed guiding ring is opposite to the annular groove of the transmission disc. The convex ring and the annular groove are connected through the shell.

[0009] Further, a seed filling inclined surface is arranged on the seed sowing hole.

[0010] Further, a brush wheel shaft is rotatably arranged between the rear seed sowing disc and the front cover plate. A brush wheel is arranged on the brush wheel shaft. The brush wheel is located in the seed cleaning area. The bristles of the brush wheel are in contact with the inner wall of the seed guiding ring. A gear is further arranged on the brush wheel shaft. A gear ring is arranged on the front surface of the transmission disc. The gear is engaged with the gear ring.

[0011] Further, a rotating shaft is arranged between the front cover plate and the rear seed sowing disc. A strong sowing wheel is arranged on the rotating shaft. The strong sowing wheel is located in the seed sowing area. The strong sowing wheel has two wheel teeth. The two wheel teeth correspond to the two seed sowing ring rings. The end portions of the wheel teeth correspond to the seed sowing holes.

[0012] Compared with the prior art, the present application has the advantages that: the seed guiding ring provided in the present application can realize population disturbance and guiding filling when sowing operation is performed; the seed guiding groove can play a certain disturbance role on the seed population, avoiding the congestion of multiple seeds at the filling hole, so that the seed guiding ring can guide the seeds out of the disordered accumulation of soybean, corn and other materials, and realize the ordered arrangement of the seeds by using the seed guiding track, thereby enhancing the filling capacity; the passive strong discharge wheel provided in the present application moves with the seed guiding ring, and after the seeds reach the seed dropping area, the seeds are discharged into the seed sowing port, so that the seed sowing device can realize the consistency of the seed dropping point under different working speeds and different sizes of seeds, and finally improve the uniformity of the seed spacing; the seed guiding ring provided in the present application has two seed dropping holes, 50 in each row, which can achieve a high seed sowing frequency; the present application can adapt to high-speed operation of the machine, realize fast and reliable filling and forced sowing of soybean, corn and other materials, improve the working performance of the mechanical precision seed sowing device, optimize the structure of the traditional mechanical seed sowing device according to the interaction relationship between force and constraint, has the characteristics of reliable structure, strong filling capacity, strong adaptability to high-speed operation, etc., improves the seed sowing performance, helps to promote the development of mechanical high-speed precision seed sowing technology and equipment, and has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application serve to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0014] Figure 1 It is an isometric view of the double-inclined-surface guiding filling and active pressure-out type seed sowing device of the present application;

[0015] Figure 2 It is an exploded view of the double-inclined-surface guiding filling and active pressure-out type seed sowing device of the present application;

[0016] Figure 3 It is a structural schematic view of the transmission disc;

[0017] Figure 4 It is a structural schematic view of the seed guiding ring;

[0018] Figure 5 It is a structural schematic view of the rear seed sowing disc;

[0019] Figure 6 It is a structural schematic view of the precision seed sowing mechanism;

[0020] Figure 7 It is an installation schematic view of the front seed sowing ring, the rear seed sowing disc and the seed protection shell;

[0021] Figure 8 It is an installation schematic view of the front seed sowing ring, the rear seed sowing disc and the seed guiding ring;

[0022] Figure 9 This is a rear view of the front cover.

[0023] Figure 10 A schematic diagram showing the locations of the seed filling area, seed cleaning area, seed carrying area, and seed placement area;

[0024] Figure 11 This is an end view of the brush wheel;

[0025] Figure 12 This is a side view of the brush wheel. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The present invention will be further described in detail below with reference to the embodiments.

[0028] like Figures 1-12 As shown, a specific embodiment of the double-sloping-surface guided filling and active pressing seed metering device provided by the present invention is as follows:

[0029] A double-sloping-surface guided filling and active pressing seed metering device includes a front cover plate 1, a seed-protecting shell 2, and a rear shell 3. Both the seed-protecting shell 2 and the rear shell 3 are round cover structures. The seed-protecting shell 2 is located inside the rear shell 3. The front cover plate 1 is fixed to the front end of the seed-protecting shell 2 and the rear shell 3 by several screws. The front surface of the front cover plate 1 is provided with a seed inlet channel 4, and the lower part of the front cover plate 1 is provided with a seed discharge port 5. The seed inlet channel 4 communicates with the seed discharge port 5. The lower left side of the rear shell 3 is provided with a seed discharge port 6 corresponding to the lower part of the seed-protecting shell 2. A precision seed metering mechanism is provided inside the seed-protecting shell 2. Seeds are put into the seed inlet channel 4 and then enter the rear shell 3 through the seed discharge port 5. The precision seed metering mechanism is used to quantitatively transport the seeds entering through the seed discharge port 5 to the seed discharge port 6, and then discharge them outward through the seed discharge port 6.

[0030] The precision seed sowing mechanism comprises a transmission disc 7, a seed guiding ring 8, a transmission shaft 9, a front seed sowing ring 10 and a rear seed sowing disc 11, the seed protecting shell 2 and the rear shell 3 are provided with a circular hole in correspondence, the rear surface of the front cover plate 1 is provided with a bearing seat, the front end of the transmission shaft 9 is rotatably installed on the bearing seat of the front cover plate 1 through a bearing, the transmission shaft 9 is installed on the seed protecting shell 2 and the rear shell 3 through a bearing arranged in the circular hole, the axis of the transmission shaft 9, the seed protecting shell 2 and the rear shell 3 coincides, the rear cover 12 is fixed on the rear surface of the rear shell 3 through a screw, the bearing in the rear cover 12 connects the transmission shaft and is used for fixing the transmission shaft to prevent the transmission shaft from moving forward and backward, the rear cover 12 is used for plugging the circular hole on the rear shell 3, and the transmission shaft 9 is rotatably connected to the rear cover 12 through a bearing;

[0031] The transmission disc 7 is installed on the transmission shaft 9, the seed guiding ring 8 is fixed on the transmission disc 7, the transmission shaft 9 is driven to rotate by an external power mechanism, so as to drive the transmission disc 7 and the seed guiding ring 8 to rotate, and the seed guiding ring 8 is specifically installed on the transmission disc 7 in the following manner: the rear end of the seed guiding ring 8 is provided with a convex ring 13, the outer edge of the transmission disc 7 is provided with an annular groove 14, the convex ring 13 of the seed guiding ring 8 is opposite to the annular groove 14 on the transmission disc 7, and the convex ring 13 and the annular groove 14 are fixedly connected through a shell.

[0032] The front seed sowing ring 10 and the rear seed sowing disc 11 are fixed on the rear surface of the front cover plate 1 together, and the front seed sowing ring 10 and the rear seed sowing disc 11 are located in the seed guiding ring 8, the outer edge of the rear seed sowing disc 11 is an integral structure of the rear seed sowing ring 15, the outer diameters of the front seed sowing ring 10 and the rear seed sowing ring 15 are slightly smaller than the inner diameter of the seed guiding ring 8, the front seed sowing ring 10 and the rear seed sowing ring 15 are provided with notches 16 at the lower right sides, and the inner circles of the front seed sowing ring 10 and the rear seed sowing ring 15 are further fixed with three baffles, the three baffles are arranged along the radial direction, and the three baffles are sequentially a first baffle 17, a second baffle 18 and a third baffle 19 in the counterclockwise direction.

[0033] The seed guiding ring 8 is provided with two seed sowing port rings arranged side by side, each seed sowing port ring comprises a plurality of seed sowing holes 20, the seed sowing holes 20 are uniformly arranged on the seed guiding ring 8 along the circumferential direction, and the seed sowing holes 20 of the two seed sowing port rings are arranged alternately, a seed guiding groove 21 is connected between two corresponding seed sowing holes 20, the seed guiding groove 21 is located in the inner circle of the seed guiding ring 8, the seed guiding groove 21 is used for connecting the two seed sowing holes 20, and the seed guiding groove 21 is an overall convex arc structure; the seeds can smoothly slide into the two seed sowing holes 20 through the convex seed guiding groove 21, and the front seed sowing ring 10 and the rear seed sowing ring 15 correspond to the two seed sowing port rings respectively, since the front seed sowing ring 10 and the rear seed sowing ring 15 are located in the inner circle of the seed guiding ring 8, the front seed sowing ring 10 and the rear seed sowing ring 15 can block the two seed sowing port rings respectively.

[0034] The first baffle 17 and the second baffle 18 form a filling area I and a cleaning area II in the seed guiding ring 8, the cleaning area II is above the filling area I, the front seed ring 10 and the notch 16 on the lower right side of the rear seed ring 15 are located in the filling area I and the cleaning area II, the second baffle 18 and the third baffle 19 form a seed carrying area III in the seed guiding ring 8, the third baffle 19 and the first baffle 17 form a seed dropping area IV in the seed guiding ring 8, and the rear shell 3 corresponds to the seed dropping hole 6 on the lower left side of the seed protection shell 2 in the seed dropping area IV. A brush wheel 22 is also arranged in the cleaning area II, and the rear seed disc 11 and the front cover plate 1 are rotatably connected by a brush wheel shaft 23, the brush wheel 22 is arranged on the brush wheel shaft 23, the brush wheel 22 is located in the cleaning area II, the bristles of the brush wheel 22 are in contact with the inner wall of the seed guiding ring 8, and a gear 24 is arranged on the brush wheel shaft 23. A gear ring 25 is arranged on the front surface of the transmission disc 7, the gear 24 is engaged with the gear ring 25, the transmission disc 7 is driven to rotate by the transmission shaft 9, the brush wheel shaft 23 is driven to rotate through the engagement of the gear ring 25 and the gear 24, the brush wheel 22 rotates with the brush wheel shaft 23, and the rotating direction of the brush wheel 22 is opposite to that of the seed guiding ring 8.

[0035] The working process of the double-inclined-surface guiding filling and active extrusion type seed sowing device is as follows: the transmission shaft 9 is driven to rotate by an external power mechanism, the transmission shaft 9 transmits power to the transmission disc 7, the transmission disc 7 drives the seed guiding ring 8 to rotate, and the seeds fall into the filling area through the seed inlet channel 4 and the seed discharge hole 5, then slide to the seed dropping holes 20 on the seed guiding ring through the notch 16. In order to make the seeds smoothly enter the seed dropping holes 20, a filling inclined surface 26 can be arranged on the seed dropping holes 20, the filling inclined surface 26 is in an inclined surface structure, the seeds can smoothly enter the seed dropping holes 20 through the filling inclined surface 26, and in addition, the seeds can also smoothly slide into the seed dropping holes 20 on both sides through the convex seed guiding grooves 21.

[0036] With the rotation of the seed guiding ring 8, the seeds enter the seed dropping holes 20 in an orderly manner, then enter the cleaning area II, the brush wheel 22 brushes the inner wall of the seed guiding ring 8 to clean the excess seeds, the cleaned seeds fall back to the filling area I, then the seeds that are not cleaned enter the seed carrying area III, and the seeds in the seed dropping holes 20 will not fall down when entering the seed carrying area III from the cleaning area II due to the blockage of the front seed ring 10 and the rear seed ring 15. Under the protection of the front seed ring 10, the rear seed ring 15 and the seed protection shell 2, the seeds enter the seed dropping area IV with the rotation of the seed guiding ring 8, at this time, the seeds fall from the seed dropping holes 20 under the action of force and are discharged outward through the seed dropping hole 6.

[0037] In order to avoid the seed jamming in the seed-throwing hole 20, causing the seed unable to be smoothly discharged from the seed-throwing hole 20 by gravity, a strong discharge wheel 27 can also be arranged in the seed-throwing area IV. Specifically, a rotating shaft is rotatably arranged between the front cover plate 1 and the rear seed-throwing disc 11, and the strong discharge wheel 27 is arranged on the rotating shaft. The strong discharge wheel 27 is located in the seed-throwing area IV, and two gear teeth 28 are arranged on the strong discharge wheel 27. The two gear teeth 28 correspond to the two seed-throwing hole rings, and the end of the gear tooth 28 extends into the seed-throwing hole 20. In the rotating process of the seed guide ring 8, the seed guide ring 8 drives the strong discharge wheel 27 to rotate, and the gear tooth 28 on the strong discharge wheel 27 is sequentially inserted into the seed-throwing hole 20 on the seed guide ring 8, so as to push the seed inside outward.

[0038] It should be noted that in this document, such as the term "comprise", "include" or any other variant thereof, is intended to cover non-exclusive inclusion, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices.

[0039] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A dual bevel guided fill and positive displacement seed meter, characterized by: The application relates to a seed-protecting device, which comprises a front cover plate, a seed-protecting shell and a rear shell, the seed-protecting shell and the rear shell are both round cover structures, the seed-protecting shell is located in the rear shell, the front cover plate is fixed at the front end of the seed-protecting shell and the rear shell, the front surface of the front cover plate is provided with a seed-feeding channel, the lower part of the front cover plate is provided with a seed-unloading port, the seed-feeding channel is communicated with the seed-unloading port, the rear shell and the lower left part of the seed-protecting shell are provided with a seed-discharging port. A precision seed-discharging mechanism is arranged in the seed-protecting shell, the precision seed-discharging mechanism comprises a transmission disc, a seed-guiding ring, a transmission shaft, a front seed-discharging ring and a rear seed-discharging disc, the transmission shaft is rotatably arranged on the front cover plate, the seed-protecting shell and the rear shell through bearings, the axis of the transmission shaft, the seed-protecting shell and the rear shell is coincident, a rear cover is further fixed on the rear side of the rear shell, the transmission shaft is rotatably connected to the rear cover through a bearing, the transmission disc is arranged on the transmission shaft, the seed-guiding ring is fixed on the transmission disc, the front seed-discharging ring and the rear seed-discharging disc are fixed on the rear surface of the front cover plate, the front seed-discharging ring and the rear seed-discharging disc are located in the seed-guiding ring, the outer edge of the rear seed-discharging disc is a rear seed-discharging ring, the outer diameters of the front seed-discharging ring and the rear seed-discharging ring are equal to the inner diameter of the seed-guiding ring, notches are arranged on the lower right parts of the front seed-discharging ring and the rear seed-discharging ring, three baffles are further fixed on the inner circle of the front seed-discharging ring and the rear seed-discharging ring, the three baffles are arranged along the radial direction, the three baffles are sequentially a first baffle, a second baffle and a third baffle along the counterclockwise direction, and each baffle is provided with a pin hole. The seed-guiding ring is provided with two seed-feeding ring rings arranged side by side, each seed-feeding ring ring comprises a plurality of seed-feeding holes, the seed-feeding holes are uniformly arranged on the seed-guiding ring along the circumferential direction, the two seed-feeding ring rings are staggered, seed-guiding grooves are connected between the two corresponding seed-feeding holes, the seed-guiding grooves are overall arc-shaped structures, the front seed-discharging ring and the rear seed-discharging ring correspond to the two seed-feeding ring rings respectively, the front seed-discharging ring and the rear seed-discharging ring block the two seed-feeding ring rings respectively, a seed-filling area and a seed-cleaning area are formed between the first baffle and the second baffle in the seed-guiding ring, the seed-cleaning area is located above the seed-filling area, the notches on the lower right parts of the front seed-discharging ring and the rear seed-discharging ring are located in the seed-filling area and the seed-cleaning area, a seed-carrying area is formed between the second baffle and the third baffle in the seed-guiding ring, a seed-feeding area is formed between the third baffle and the first baffle in the seed-guiding ring, and the seed-discharging port on the lower left part of the rear shell and the seed-protecting shell is located in the seed-feeding area.

2. The dual bevel guide fill and positive displacement seed meter of claim 1, wherein: The rear end of the seed-guiding ring is provided with a convex ring, the outer edge of the transmission disc is provided with an annular groove, the convex ring of the seed-guiding ring is opposite to the annular groove of the transmission disc, and the convex ring and the annular groove are fixedly connected through a plurality of screws.

3. The dual bevel guide fill and positive displacement seed meter of claim 1, wherein: The seed-feeding holes are provided with seed-filling inclined surfaces.

4. The dual bevel guide fill and positive displacement seed meter of claim 1, wherein: A brush wheel shaft is rotatably arranged between the rear seed-discharging disc and the front cover plate, a brush wheel is arranged on the brush wheel shaft, the brush wheel is located in the seed-cleaning area, the bristles of the brush wheel are in contact with the inner wall of the seed-guiding ring, a gear is further arranged on the brush wheel shaft, and a gear ring is arranged on the front surface of the transmission disc, the gear is engaged with the gear ring.

5. The dual bevel guide fill and positive displacement seed meter of claim 1, wherein: A rotating shaft is rotatably arranged between the front cover plate and the rear seed-discharging disc, a strong-discharging wheel is arranged on the rotating shaft, the strong-discharging wheel is located in the seed-feeding area, the strong-discharging wheel has two gear teeth, the two gear teeth correspond to the two seed-feeding ring rings, and the end parts of the gear teeth correspond to the seed-feeding holes.

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