CN114375653B

CN114375653B - Centralized type segmented modularized seed discharging wheel structure

Info

Publication number: CN114375653B
Application number: CN202210052418.1A
Authority: CN
Inventors: 戴亿政; 胡彬生; 周玉姣; 骆赞磊; 李奇; 苏子昊; 王晖文; 汪华; 王在满
Original assignee: Jiangxi Agricultural Technology Extension Center
Current assignee: Jiangxi Agricultural Technology Extension Center
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2023-03-17
Anticipated expiration: 2042-01-18
Also published as: CN114375653A

Abstract

The invention relates to the field of efficient seeding machinery in modern agriculture, in particular to a centralized segmented modular seed metering wheel structure which comprises a pressure relief plate, an end cover, a support, a hexagonal shaft sleeve, a bearing, a seed dropping port, a pulling plate, a shell, a connecting plate, a brush, a centralized seed metering wheel and a quick switching device, wherein the shell, the pulling plate, the seed dropping port and the pressure relief plate form an internal cavity structure; the centralized seed sowing wheel is arranged in the internal cavity structure, one end of the centralized seed sowing wheel is fixed on the shell, and the other end of the centralized seed sowing wheel is connected with one end of the quick switching device through the end cover; the other end of the quick switching device is connected to the bearing through a hexagonal shaft sleeve, and the bearing is driven to rotate through an external motor synchronous belt to drive the centralized seed sowing wheel to rotate. The centralized sectional modular seed metering wheel structure can achieve the purposes of hole pattern compounding and high-efficiency quick replacement of the seed metering wheel, has the advantages of dual purposes of compounding, high efficiency, quick installation and replacement and the like, and is suitable for seeding crops such as rice, rape, wheat and the like.

Description

Centralized type segmented modular seed metering wheel structure

Technical Field

The invention relates to the field of efficient sowing machinery in modern agriculture, in particular to a centralized sectional modular seed metering wheel structure.

Background

China is the main world for grain production and consumption, but the production efficiency of main crops is low, and particularly the mechanization rate of the planting links of crops such as rice, rape, potatoes and the like is low. At present, rice and rape direct seeding generally adopts manual broadcasting, and the seeds subjected to manual broadcasting are uneven in density, poor in ventilation and daylighting performance and susceptible to pest and disease damage. The mechanical precision direct seeding can overcome the problems existing in manual broadcasting, and is a development trend of crop direct seeding production. In the mechanical direct seeding technology, the pneumatic direct seeding technology is high-performance and advanced direct seeding technology, and compared with the traditional mechanical seeding technology, the pneumatic direct seeding technology has better seed adaptability and can meet the seeding requirements of crop seeds such as rice, rape, wheat and the like.

At present, the annual utilization rate of direct seeding machines such as rice, rape and wheat is basically once in a single season, the service life is about 30 days generally, the idle rate of the machines is high, and the improvement of the utilization rate of the machines becomes an important way for improving quality and efficiency. Therefore, the development of a multi-crop dual-purpose seed sowing device is imperative, and the centralized sectional modular seed sowing wheel structure can meet the practical requirement.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a centralized sectional modular seed metering wheel structure which has the advantages of dual purposes, high efficiency, quick installation and replacement and the like and is suitable for seeding crops such as rice, rape, wheat and the like.

In order to realize the aim, the invention provides a centralized sectional modular seed metering wheel structure device, which mainly comprises a pressure relief plate, an end cover, a bracket, a hexagonal shaft sleeve, a bearing, a seed outlet, a pumping plate, a shell, a connecting plate and a brush, and also comprises a centralized seed metering wheel and a quick switching device;

the shell, the drawing plate, the seed outlet and the pressure relief plate form an internal cavity structure; the centralized seed metering wheel is arranged in the internal cavity structure, one end of the centralized seed metering wheel shaft is fixed on the shell, and the other end of the centralized seed metering wheel shaft is connected with one end of the quick switching device through an end cover arranged on the corresponding side of the shell; the other end of the quick switching device is connected to the bearing through a hexagonal shaft sleeve and fixed on the bracket, and the bearing is driven to rotate through an external motor synchronous belt to drive the centralized seed metering wheel to rotate, so that the seed filling and seed metering processes of crop seeding can be realized; the take-out plate is installed in the casing, play the effect of unloading kind and fixed brush, take out and set up back type mounting hole on the board, the brush passes through the bolt fastening and is in on the take-out plate, accessible removal bolt is in the clearance between the position control brush and the seed metering wheel of back type mounting hole, clears away the unnecessary seed in centralized seed metering wheel surface, the casing passes through the connecting plate and is connected with outside seed case, be provided with the pressure relief board between connecting plate and the outside seed case, the casing bottom is equipped with the kind of a mouthful down, during the seeding, discharges stable the amount seed stream through kind of a mouthful down. The centralized large-seeding-quantity seed discharging structure can realize a centralized one-to-many-row large-seeding-quantity seed discharging structure through the matching motion of the internal cavity structure and the centralized seed discharging wheel.

The further proposal is that the centralized seed sowing wheel comprises a main seed ring, an auxiliary seed ring and an adjusting ring module; the whole appearance of main row's ring, vice row's ring and adjustable ring is the cylindric that the external diameter is the same, and the three passes through axial shaft shoulder ladder square shaft square hole cooperation zonulae occludens, or through coaxial coupling. The invention can meet the seeding requirements of various crop seeds by replacing and combining various different ring rows.

The further proposal is that the centralized seed sowing wheel consists of main row rings, auxiliary row rings and adjusting ring modules with different numbers, and the arrangement sequence and the angle are randomly combined. The combination of the main ring discharging, the auxiliary ring discharging and the adjusting ring module with different numbers can be selected according to the difference of crops and the seeding amount, and the seeding amount can be adjusted in a grading way.

The further scheme is that the main ring surface of arranging is cylindrical, is equipped with main hole, hole ridge, first installation counterpoint hole and first hexagonal hole, main hole circumference array is in on the main ring surface cylinder of arranging, main hole is semi-ellipse shape recess, and the notch both sides are open, the sideline with the main ring surface of arranging is tangent, form the hole ridge between the adjacent sideline in main hole, first installation counterpoint hole axial runs through the hole ridge, first hexagonal hole runs through the setting and is in the cylinder center of main ring of arranging. The main type hole acts on the large-diameter crop seeds, the hole pattern can be set according to the size of the seeds and is a common seed arranging ring, and meanwhile, the internal volume of the main type hole is positively correlated with the seeding rate.

The utility model provides a further scheme is, the surface of vice bank ring with main bank ring is the same, is equipped with profile, vice type hole, second installation counterpoint hole and second hexagonal hole, vice type hole circumference array is in on the cylinder of vice seed metering ring surface, vice type hole is half ellipsoid shape recess, and the notch is sealed all around, the sideline with it is tangent to vice seed metering ring surface, the surface of vice bank ring is detached form the profile behind the vice type hole, second installation counterpoint hole axial runs through locate the profile edge, and with vice type hole dislocation, the second hexagonal hole runs through the setting and is in the cylinder center of vice bank ring. The auxiliary type holes act on the small-diameter crop seeds, the hole types and the number can be set according to the sizes of the seeds, meanwhile, the ring arrangement is used for dual purposes, and the internal volume of the type holes is positively correlated with the sowing quantity.

The cylindrical outer surface of the adjusting ring is a unthreaded hole, the surface of the amorphous hole and the surface of the outer ring are closed, the third mounting alignment hole is formed in the side edge of the unthreaded hole and axially penetrates through the unthreaded hole, and the third hexagonal hole penetrates through the center of the cylinder of the adjusting ring. The adjusting ring of the invention has the functions of adjusting the seeding medium amount and supporting and stabilizing the seed sowing wheel structure, and the adjusting ring does not directly act on the seed sowing of the crop seeds.

The further scheme is that the hexagonal hole both ends of ring, vice ring and the adjustable ring are arranged to the main branch do not are equipped with shoulder hole and hollow hexagonal hole projecting shaft, the shoulder hole with hollow hexagonal hole projecting shaft matches each other, the depth of shoulder hole is greater than the axial length of hollow hexagonal hole projecting shaft, and is less than the axial width of ring, vice ring and the adjustable ring is arranged to the main branch. The hollow hexagonal hole protruding shaft can be inserted into the stepped hole, the main row ring, the auxiliary row ring and the adjusting ring are randomly connected, and meanwhile, the pulsation of seeding can be reduced.

The seed metering wheel is characterized in that the quick switching device comprises a short hexagonal shaft, a long hexagonal shaft and a regular hexagonal universal joint, one end of the short hexagonal shaft and one end of the long hexagonal shaft are respectively installed at two ends of the regular hexagonal universal joint, the short hexagonal shaft and the long hexagonal shaft can axially move in inner holes at two ends of the regular hexagonal universal joint through a first threaded hole and a second threaded hole which are arranged on the regular hexagonal universal joint, the other end of the short hexagonal shaft is connected with a hexagonal hole in the seed metering wheel, and the other end of the long hexagonal shaft is connected with the bearing. The quick switching device not only plays a role in power transmission, but also can be quickly switched and disassembled, so that the quick replacement and installation of the centralized seed sowing wheel are realized, the quick switching device can be used for quickly replacing the seed sowing wheel among different crops, and the efficiency is high.

The further scheme is that the drawing plate is a moving part, the installation angle and the horizontal plane included angle are 43-45 degrees, a square-shaped installation hole is formed in the drawing plate, the hairbrush is connected to the square-shaped installation hole through a bolt, and the redundant seeds on the surface of the centralized seed sowing wheel are removed by adjusting the gap between the hairbrush and the centralized seed sowing wheel through the installation position of the adjusting bolt.

The invention has the beneficial effects that:

1. the centralized sectional modularized seed sowing wheel structure adopts a centralized seed sowing wheel mode of multi-type hole combination assembly, can adapt to the sowing of various crops under the condition of changing the seed sowing wheel, further improves the multiplexing index of crop production direct sowing machines and tools, and solves the problem of low annual utilization rate of a single machine.

2. The centralized sectional modularized seed metering wheel structure adopts the quick switching device, the quick switching device has few parts, is easy to install, is quick to assemble, has high power transmission efficiency, effectively solves the problem of power transmission coaxiality of the seed metering device, and ensures the efficient and quick replacement of the centralized seed metering wheel.

3. The centralized sectional modular seed metering wheel structure adopts a centralized seed metering scheme, one seed metering wheel can supply seeds for a plurality of seeding rows, the centralized sectional modular seed metering wheel structure is different from the traditional seed metering wheel which is used for seeding in a row, the quantity of the seed metering wheels can be reduced, a complex transmission mechanism is not needed, the problem of power synchronization among the single bodies of the seed metering device is solved, and the working efficiency is high.

4. The centralized seed sowing wheel adopts a segmented modular structure design, the arrangement sequence and the angles among the modules are randomly combined, the rapid assembly can be realized, the size of the shaped hole can be selected, and the sowing quantity can be adjusted in a grading way.

Drawings

FIG. 1 is a schematic structural view of a centralized sectional modular seed wheel according to the present invention;

FIG. 2 is a schematic view of a centralized seed wheel according to an embodiment of the present invention;

FIG. 3 is an isometric view of a main collar of one embodiment of the present invention;

FIG. 4 is an isometric view of a secondary row of rings in accordance with an exemplary embodiment of the present invention;

FIG. 5 is an isometric view of an adjustment ring of one particular embodiment of the invention;

fig. 6 is an isometric view of a fast switching apparatus according to an embodiment of the present invention.

The attached drawings are marked as follows:

1-main ring array; 101-a master hole; 102-a land; 103-a first mounting alignment hole; 104-a first hexagonal hole; 2-auxiliary ring arrangement; 201-a profile; 202-secondary hole; 203-a second mounting alignment hole; 204-a second hexagonal hole; 3-an adjusting ring; 301-a light hole; 302-a third mounting alignment hole; 303-a third hexagonal hole; 304-a stepped bore; 305-hollow hexagonal hole extension shaft; 4, pressure relief plate; 5-end cover; 6-short hexagonal shaft; 7-a regular hexagonal universal joint; 701-a first threaded hole; 702-a second threaded hole; 8-a scaffold; 9-hexagonal shaft sleeve; 10-a bearing; 11-long hexagonal shaft; 12-sowing the seeds; 13-drawing the plate; 14-a housing; 15-a connecting plate; 16-brush.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for limiting the components, and are used only for the convenience of distinguishing the corresponding components, and if not otherwise stated, the above terms do not have special meanings, and therefore, should not be construed as limiting the scope of the present application.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Referring to fig. 1 to 6, it should be noted that the drawings provided in the present embodiment are only schematic illustrations of the basic idea of the present invention, and only show the components related to the present invention rather than drawn according to the number, shape and size of the components in actual implementation, the shape, number and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

As shown in figure 1, the invention discloses a centralized sectional modular seed metering wheel structure, which comprises a main seed metering ring 1, an auxiliary seed metering ring 2, an adjusting ring 3, a pressure relief plate 4, an end cover 5, a short hexagonal shaft 6, a regular hexagonal universal joint 7, a bracket 8, a hexagonal shaft sleeve 9, a bearing 10, a long hexagonal shaft 11, a seed outlet 12, a pulling plate 13, a shell 14, a connecting plate 15 and a brush 16. Wherein, the main seeding ring 1, the auxiliary seeding ring 2 and the adjusting ring 3 are randomly combined and assembled into a centralized seeding wheel, and the short hexagonal shaft 6, the regular hexagonal universal joint 7 and the long hexagonal shaft 11 are assembled into a quick switching device.

The shell 14, the drawing plate 13, the sowing hole 12 and the pressure relief plate 4 form an internal cavity structure; the centralized seed sowing wheel is arranged in the internal cavity structure, one end of the centralized seed sowing wheel shaft is fixed on the shell 14, and the other end of the centralized seed sowing wheel shaft is connected with one end of the quick switching device through an end cover 5 arranged at the corresponding side of the shell 14; the other end of the quick switching device is connected to a bearing 10 through a hexagonal shaft sleeve 9 and fixed on a bracket 8, and a synchronous belt drives the bearing 10 to rotate through an external motor and drives a centralized seed sowing wheel to rotate; the suction plate 13 is arranged in the shell 14, the hairbrush 16 is fixed on the suction plate 13, the shell 14 is connected with an external seed box through a connecting plate 15, the pressure relief plate 4 is arranged between the connecting plate 15 and the external seed box, and the bottom of the shell 14 is provided with the seed outlet 12.

In the embodiment shown in fig. 1, during sowing, seeds in the outer inoculation box enter the shell 14 through the connecting plate 15, and in a cavity formed by the pulling plate 13, the brush 16 and the shell 14, the short hexagonal shaft 6 inputs power to drive the seed sowing wheel to rotate, so that the seeds entering the shell 14 are brought into the seed discharge opening 12 through the shaped hole on the centralized seed sowing wheel, and the seed flow is discharged in a timed and quantitative manner.

The drawing plate 13 is a movable part and is arranged in a hole of the shell 14, seeds can be quickly unloaded when the seeding is finished, and in order to ensure that the centralized seed sowing wheel fills the hole with the seeds within the limit rotating speed, the included angle between the drawing plate and the horizontal plane is 43 degrees, 44 degrees or 45 degrees. The brush 16 is connected to the square mounting hole of the pumping plate 13 through a bolt, and the position of the brush is adjustable, so that the tangential distance between the brush 16 and the centralized seed sowing wheel is adjusted, and the redundant seeds on the surface of the centralized seed sowing wheel are convenient to clear.

The pressure relief plate 4 is in face fit with the connecting plate 15, and plays a role in reducing the pressure of seeds above on the centralized seed sowing wheel. The end cover 5 is arranged on the shell 14 through a butterfly bolt and is used for axially limiting the centralized seed sowing wheel. An assembly body is formed by the support 8, the hexagonal shaft sleeve 9 and the bearing 10, the long hexagonal shaft 11 is supported and fixed, external power is input by the long hexagonal shaft 11, and the seed sowing wheel is driven to rotate through a synchronous belt or chain wheel transmission, so that the seeding is realized.

In the embodiment, a centralized seed sowing wheel mode and a quick switching device are adopted, under the condition of changing the seed sowing wheel, the seeding machine can adapt to the seeding of various crops, further the multiplexing index of a crop production direct sowing machine tool is improved, and the problem of low annual utilization rate of a single machine can be effectively solved.

In another embodiment of the present invention, as shown in fig. 2, the main seed discharging ring 1, the auxiliary seed discharging ring 2 and the adjusting ring 3 are cylindrical with the same outer diameter, and are assembled and connected to form a centralized seed discharging wheel, and the number, the arrangement sequence and the angle of the wheels can be randomly combined. In actual use, the number and the type holes of the main seed discharging ring 1, the auxiliary seed discharging ring 2 and the adjusting ring 3 can be selected according to different seeding crop objects and different seeding amounts, namely the main type holes 101, the auxiliary type holes 202 and the unthreaded holes 301 can be randomly combined, and the internal volume of the hole pattern is positively correlated to the seeding amount. In addition, the seeding rings can be coaxially connected through a hexagonal shaft and can also be tightly connected through the matching of axial shaft shoulder stepped square shaft square holes. The positions of the pattern holes can be adjusted through the mutual matching of the first mounting alignment hole 103, the second mounting alignment hole 203 and the third mounting alignment hole 302 of the main seeding ring 1, the auxiliary seeding ring 2 and the adjusting ring 3, and the pulsation of the centralized seeding wheel during seeding is reduced.

In the embodiment, by adopting a centralized seed sowing wheel mode assembled by combining various types of holes, the main seed sowing ring 1, the auxiliary seed sowing ring 2 and the adjusting ring 3 are randomly combined into modules according to actual needs, one seed sowing wheel can supply seeds for a plurality of sowing rows, the use number of the seed sowing wheels can be reduced, the use of a complex transmission mechanism can be reduced, meanwhile, the modules can be quickly assembled, the sizes of the holes can be selected, and the sowing amount can be adjusted in a grading manner.

As shown in fig. 3, the outer surface of the main ring 1 is cylindrical, and is provided with a main hole 101, a ridge 102, a first mounting alignment hole 103 and a first hexagonal hole 104, the main hole 101 is circumferentially arrayed on the outer surface cylinder of the main ring, the main hole 101 is a semi-elliptical groove, two sides of the notch are open, the sidelines are tangent to the outer surface of the main ring 1, the ridge 102 is formed between adjacent sidelines of the main hole 101, the first mounting alignment hole 103 axially penetrates through the ridge 102, and the first hexagonal hole 104 penetrates through the center of the cylinder of the main ring 1.

As shown in fig. 4, the outer surface of the secondary seeding ring 2 is the same as the main seeding ring 1, and is provided with a profile 201, a secondary hole 202, a second installation alignment hole 203 and a second hexagonal hole 204, the secondary hole 202 is circumferentially arrayed on the cylinder of the outer surface of the secondary seeding ring 2, the secondary hole 202 is a semi-ellipsoidal groove, the periphery of the notch is closed, the sideline is tangent to the outer surface of the secondary seeding ring 2, the outer surface of the secondary seeding ring 2 is formed into the profile 201 after removing the secondary hole 202, the second installation alignment hole 203 is axially arranged on the profile 201 in a penetrating manner and is staggered with the secondary hole 202, and the second hexagonal hole 204 is arranged in the center of the cylinder of the secondary seeding ring 2 in a penetrating manner.

As shown in fig. 5, the outer surface of the adjusting ring 3 is a smooth hole 301, the outer ring surface is closed, a third mounting alignment hole 302 is arranged on the side edge of the smooth hole 301 and axially penetrates through the smooth hole 301, and a third hexagonal hole 303 penetrates through the center of the cylinder of the adjusting ring 3.

In another embodiment of the invention, the main seeding ring 1, the auxiliary seeding ring 2 and the adjusting ring 3 are randomly combined according to actual needs, and the number of rings is limited by the size of the shell. The main holes 101 on the main seeding ring 1 are working surfaces, the hole ridges 102 are closed ends, and the first mounting alignment holes 103 can form dislocation of the holes as required, so that the pulsation of the centralized seeding wheel is reduced; the first hexagonal hole 104 is a shaft hole. The upper contour 201 of the auxiliary seed discharging ring 2 is a closed surface, and the auxiliary hole 202 is a working surface; the second mounting alignment holes 203 can form dislocation of the holes as required, so that the pulsation of the centralized seed sowing wheel is reduced; the second hexagonal hole 204 is a shaft hole. The unthreaded hole 301 on the adjusting ring 3 is a closed end, the third mounting alignment hole 302 can form dislocation of holes as required to reduce the pulsation of the centralized seed sowing wheel, and the third hexagonal hole 303 is a shaft hole as the first hexagonal hole 104 and the second hexagonal hole 204. The main seeding ring 1, the auxiliary seeding ring 2 and the adjusting ring 3 are coaxially connected through a hexagonal shaft. In the embodiment, the hexagonal shafts are coaxially connected, and the aligning holes are installed in a matched mode, so that the pulsation of the centralized seed sowing wheel can be effectively reduced.

In another embodiment of the present invention, as shown in fig. 5, stepped holes 304 are respectively disposed at one end of the first hexagonal hole 104, the second hexagonal hole 204 and the third hexagonal hole 303, a hollow hexagonal protruding shaft 305 is disposed at the other end of the first hexagonal hole, the stepped holes 304 are matched with the hollow hexagonal protruding shaft 305, the hollow hexagonal protruding shaft 305 can be sleeved in the stepped holes 304, and the depth of the stepped holes 304 is greater than the axial length of the hollow hexagonal protruding shaft 305 and smaller than the axial widths of the main seeding ring 1, the auxiliary seeding ring 2 and the adjusting ring 3. The stepped shaft shoulder square shaft holes are installed, matched and connected through stepped holes 304 on the first hexagonal hole 104, the second hexagonal hole 204 and the third hexagonal hole 303 and a hollow hexagonal hole extension shaft 305. In the embodiment, the stepped shaft shoulder square shaft square hole is adopted for installation, matching and connection, so that the pulsation of the centralized seed sowing wheel can be effectively reduced.

In another embodiment of the present invention, as shown in fig. 6, a fast switching device is designed, which includes a short hexagonal shaft 6, a long hexagonal shaft 11 and a regular hexagonal universal joint 7, wherein one end of the short hexagonal shaft 6 and one end of the long hexagonal shaft 11 are respectively installed at two ends of the regular hexagonal universal joint 7, and are fixed by a set screw arranged in a first threaded hole 701 and a second threaded hole 702 of the regular hexagonal universal joint 7, the short hexagonal shaft 6 and the long hexagonal shaft 11 can axially move in inner holes at two ends of the regular hexagonal universal joint 7, the other end of the short hexagonal shaft 6 is connected with a hexagonal hole in the seed wheel, and the other end of the long hexagonal shaft 11 is connected with the bearing 10.

In the embodiment of fig. 6, the end B of the short hexagonal shaft 6 is mounted in the hole of the regular hexagonal universal joint 7 and fixed by a set screw in the first threaded hole 701, the end C of the long hexagonal shaft 11 is fixed by a set screw in the second threaded hole 702, and the hexagonal shaft hole clearance is less than 0.5mm. The end A of the short hexagonal shaft 6 is connected with the centralized seed sowing wheel, and the end D of the long hexagonal shaft 11 is connected and fixed with an assembly body consisting of the bracket 8, the hexagonal shaft sleeve 9 and the bearing 10. When in work, the whole body is connected into a whole; when the centralized seed sowing wheel is replaced, the set screw is loosened, the short hexagonal shaft 6 and the long hexagonal shaft 11 are separated from the centralized seed sowing wheel and the support 8 respectively through axial movement, and the axial assembly matching size is smaller than the disassembly axial movement size. Two ends of the regular-hexagonal universal joint 7 are respectively matched with the shaft holes of the short hexagonal shaft 6 and the long hexagonal shaft 11, so that the shaft aligning problem of connection of the short hexagonal shaft 6 and the long hexagonal shaft 11 can be solved. The quick switching device of this embodiment spare part is few, easily installs, and is swift, can solve the seed metering ware power transmission axiality problem simultaneously, and transmission power efficiency is high.

Finally, only specific embodiments of the present invention have been described in detail above. The invention is not limited to the specific embodiments described above. Equivalent modifications and substitutions by those skilled in the art are also within the scope of the present invention. Accordingly, equivalent alterations and modifications are intended to be included within the scope of the invention, without departing from the spirit and scope of the invention.

Claims

1. A dual-purpose sectional modular seed sowing wheel structure comprises a pressure relief plate (4), an end cover (5), a bracket (8), a hexagonal shaft sleeve (9), a bearing (10), a seed sowing port (12), a pulling plate (13), a shell (14), a connecting plate (15) and a brush (16), and is characterized by also comprising a centralized seed sowing wheel and a quick switching device;

the shell (14), the pulling plate (13), the seeding opening (12) and the pressure relief plate (4) form an internal cavity structure; the centralized seed metering wheel is arranged in the internal cavity structure, one end of the centralized seed metering wheel shaft is fixed on the shell (14), and the other end of the centralized seed metering wheel shaft is connected with one end of the quick switching device through an end cover (5) arranged on the corresponding side of the shell (14); the other end of the quick switching device is connected to a bearing (10) through a hexagonal shaft sleeve (9), is fixed on a bracket (8), and drives the bearing (10) to rotate through an external motor synchronous belt so as to drive the centralized seed sowing wheel to rotate; the suction plate (13) is arranged in the shell (14), the brush (16) is fixed on the suction plate (13), the shell (14) is connected with an external seed box through a connecting plate (15), a pressure relief plate (4) is arranged between the connecting plate (15) and the external seed box, and a seed outlet (12) is arranged at the bottom of the shell (14);

the centralized seed sowing wheel comprises a main seed sowing ring (1), an auxiliary seed sowing ring (2) and an adjusting ring (3) module; the main seeding ring (1), the auxiliary seeding ring (2) and the adjusting ring (3) are integrally cylindrical with the same outer diameter and are tightly connected in a matched manner through an axial shaft shoulder step square shaft square hole;

the outer surface of the main ring (1) is cylindrical, and is provided with a main hole (101), a hole ridge (102), a first installation alignment hole (103) and a first hexagonal hole (104), the main hole (101) is circumferentially arrayed on the outer surface cylinder of the main ring, the main hole (101) is a semi-elliptical groove, two sides of a notch are open, side lines are tangent to the outer surface of the main ring (1), the hole ridge (102) is formed between adjacent side lines of the main hole (101), the first installation alignment hole (103) axially penetrates through the hole ridge (102), and the first hexagonal hole (104) is arranged at the center of the cylinder of the main ring (1) in a penetrating manner;

the outer surface of the auxiliary seed discharging ring (2) is the same as that of the main seed discharging ring (1), and is provided with a profile (201), an auxiliary hole (202), a second installation alignment hole (203) and a second hexagonal hole (204), the auxiliary hole (202) is circumferentially arrayed on a cylinder of the outer surface of the auxiliary seed discharging ring (2), the auxiliary hole (202) is a semi-ellipsoidal groove, the periphery of a notch is closed, a side line is tangent to the outer surface of the auxiliary seed discharging ring (2), the outer surface of the auxiliary seed discharging ring (2) except the auxiliary hole (202) forms the profile (201), the second installation alignment hole (203) axially penetrates through the edge of the profile (201) and is staggered with the auxiliary hole (202), and the second hexagonal hole (204) penetrates through the center of the cylinder of the auxiliary seed discharging ring (2);

the cylindrical outer surface of the adjusting ring (3) is closed, a third installation alignment hole (302) is formed in the side edge of the adjusting ring (3) and axially penetrates through the adjusting ring (3), and a third hexagonal hole (303) is formed in the center of a cylinder of the adjusting ring (3) in a penetrating mode;

stepped holes (304) and hollow hexagonal hole extension shafts (305) are respectively formed in two ends of a hexagonal hole of the main seeding ring (1), the auxiliary seeding ring (2) and the adjusting ring (3), the stepped holes (304) are matched with the hollow hexagonal hole extension shafts (305), the depth of each stepped hole (304) is larger than the axial length of each hollow hexagonal hole extension shaft (305) and smaller than the axial width of the main seeding ring (1), the auxiliary seeding ring (2) and the adjusting ring (3);

the centralized seed sowing wheel consists of modules of main seed sowing rings (1), auxiliary seed sowing rings (2) and adjusting rings (3) with different numbers, and the arrangement sequence and the angles are randomly combined.

2. A dual-purpose segmented modular seed wheel structure according to claim 1, wherein the fast switching means comprises a short hexagonal shaft (6), a long hexagonal shaft (11) and a hexagonal universal joint (7), one end of the short hexagonal shaft (6) and one end of the long hexagonal shaft (11) are respectively mounted at both ends of the hexagonal universal joint (7), and are fixed by a set screw provided in a first screw hole (701) and a second screw hole (702) of the hexagonal universal joint (7), the short hexagonal shaft (6) and the long hexagonal shaft (11) axially move in inner holes at both ends of the hexagonal universal joint (7), the other end of the short hexagonal shaft (6) is connected to a hexagonal hole of the centralized seed wheel, and the other end of the long hexagonal shaft (11) is connected to the bearing (10).

3. The dual-purpose sectional modular seed metering wheel structure of claim 1, wherein the drawing plate (13) is a movable part, the installation angle and the horizontal plane form an included angle of 43-45 degrees, a square-shaped installation hole is arranged on the drawing plate (13), the brush (16) is connected to the square-shaped installation hole through a bolt, and the gap between the brush (16) and the centralized seed metering wheel is adjusted through the installation position of the adjusting bolt, so that redundant seeds on the surface of the centralized seed metering wheel are removed.