Corn seed-metering device

Abstract

The utility model relates to a corn seed-metering device, which belongs to the technical field of agricultural seeding mechanical equipment and comprises a feeding and separating component, a single-grain discharging component and a transmission connecting component. The feeding and grading assembly comprises a grading seat, a feeding shell fixedly connected with the grading seat is arranged at the upper end of the grading seat, and a grading disc communicated with the feeding shell is arranged in the grading seat. The single grain discharging assembly comprises a discharging wheel attached to the feeding grain separating assembly. The transmission connection assembly comprises a transmission shaft which is fixedly connected with the discharging wheel and the grain separating disc in an inserted and embedded mode. The device has the characteristics of compact structure, good operation stability and high use efficiency. The probability of miss-seeding and re-seeding of corn seeds is reduced, and the seeding efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural sowing machinery and equipment, in particular to a corn seeding device. Background Art

[0002] Seeder is a planting machine that sows crop seeds. Seeders used for a certain type or crop are often named after the crop type, such as grain drills, corn hole seeders, cotton seeders, forage spreaders, etc. Precision seeders will be more widely used in corn, sugar beets, cotton, beans and some vegetable crops. The manufacturing accuracy of seed meter parts will continue to improve, and more electronic monitoring devices that can send alarm signals in time when abnormal conditions occur will be used. The object of seeding with a seeder is crop seeds or pelletized coated seeds. It can be divided into three categories according to the sowing method: vacuum seed seeder spreader, drill seeder and hole seeder.

[0003] For any kind of seeder, the seed meter is the core, which determines the working quality and performance of the seeder. Corn scientific research and production practice have proved that increasing density and dense planting and increasing ears have a significant and decisive effect on increasing yield, and increasing density can only be adjusted by changing the spacing between plants and rows.

[0004] The existing spoon wheel type seeding device has a relatively simple structure. The corn seeds are transferred from the seed chamber shell to the guide wheel through the synchronous rotation of the guide wheel and the seed spoon plate, and then discharged from the seed drop plate. However, during the seeding process, the phenomenon of missed seeding and repeated seeding is prone to occur, which affects the seeding efficiency and quality. Summary of the invention

[0005] The utility model mainly solves the deficiencies in the prior art and provides a corn seeding device, which has the characteristics of compact structure, good operation stability and high use efficiency, reduces the probability of missed seeding and re-seeding of corn seeds, and improves seeding efficiency and quality.

[0006] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0007] A corn seed metering device includes a feed grain sorting component, a single grain discharging component and a transmission connection component. The feed grain sorting component includes a grain sorting seat, the upper end of the grain sorting seat is provided with a feed housing connected and fixed to the grain sorting seat, and the grain sorting seat is provided with a grain sorting disk connected to the feed housing. The single grain discharging component includes a discharging wheel fitted with the feed grain sorting component. The transmission connection component includes a transmission shaft fixedly plugged and connected to the discharging wheel and the grain sorting disk.

[0008] Preferably, the grain-classifying seat is composed of a grain-classifying shell seat, a brush, a grain-classifying shell cover, an iron ring, a rear cam, and a locking block. The grain-classifying shell cover is installed at the notch of the grain-classifying shell seat, the brush is installed in the notch formed by the grain-classifying shell seat and the grain-classifying shell cover, the rear cam is installed in the groove in the grain-classifying shell seat, the iron ring is installed on the inner ring of the grain-classifying shell seat, and the iron ring is fixed with a locking block.

[0009] Preferably, the grain-classifying plate is composed of a fork seat, a fork and a front cam; the fork seat is fixedly connected to the transmission shaft by plug-in nut locking, the fork seat is provided with a plurality of forks distributed in a ring shape and extending to the inner wall of the grain-classifying seat, a front cam sleeved with the transmission shaft is provided between the fork seat and the fork; the front cam is installed in a groove in the fork seat, and the forks are evenly distributed and installed in the semicircular groove of the fork seat.

[0010] Preferably, the shift fork is composed of a main shift fork, a movable shift fork, a torsion spring, a roller, and a fixed shaft; the rollers are respectively installed at the end notches of the main shift fork and the movable shift fork, the movable shift fork is installed at the tail notch of the main shift fork, the torsion spring is installed in the angle formed by the movable shift fork and the main shift fork, and the fixed shaft is installed in the torsion spring and inserted into the holes of the movable shift fork and the main shift fork.

[0011] Preferably, a bearing seat is provided between the transmission shaft and the particle classification seat, and bearings nested with the transmission shaft are provided between the transmission shaft and the bearing seat, and between the transmission shaft and the discharging wheel.

[0012] Preferably, a discharging shell which is screw-fixed to the particle classification seat is disposed on the periphery of the discharging wheel, and a discharging cover which is screw-fixed to the discharging shell is disposed on the outer end surface of the discharging shell.

[0013] Preferably, the discharging wheel is installed in the discharging shell, the discharging cover is installed in a close fit with the discharging shell, the soft rubber sheet is installed in the notch of the discharging cover, and the latch is installed in the mounting holes of the discharging shell and the discharging cover.

[0014] The transmission connection component and the single grain discharging component are installed and connected with the discharging shell through the bearing seat, and the feeding grain classification component and the transmission connection component are installed and connected with the rear cam through the bearing seat.

[0015] The utility model can achieve the following effects:

[0016] The utility model provides a corn seeding device, which has the characteristics of compact structure, good operation stability and high use efficiency compared with the prior art, reduces the probability of missed seeding and re-seeding of corn seeds, and improves seeding efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the top-view axial side structure of the utility model.

[0019] Figure 3 It is a schematic diagram of the upward-looking axial side structure of the utility model.

[0020] Figure 4 It is a schematic diagram of the structure after the discharge cover of the utility model is removed.

[0021] Figure 5 It is a structural sectional view of the utility model.

[0022] Figure 6 It is a front view structural schematic diagram of the particle classification seat in the utility model.

[0023] Figure 7 It is a rear structural schematic diagram of the particle classifying seat in the utility model.

[0024] Figure 8 It is a front view structural schematic diagram of the particle classification disk in the utility model.

[0025] Fig. 9 It is a rear structural schematic diagram of the particle classification disk in the utility model.

[0026] Fig.10 It is a structural schematic diagram of the shift fork in the utility model.

[0027] In the figure: feed particle classification component 1, single particle discharging component 2, transmission connection component 3, feed shell 4, particle classification disk 5, fork seat 5-1, fork 5-2, front cam 5-3, latch 6, particle classification seat 7, particle classification shell seat 7-1, brush 7-2, particle classification shell cover 7-3, iron ring 7-4, rear cam 7-5, locking block 7-6, soft rubber film 8, discharging shell 9, discharging cover 10, transmission shaft 11, discharging wheel 12, bearing 13, bearing seat 14, main fork 15, movable fork 16, torsion spring 17, roller 18, fixed shaft 19. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0029] Example: Figure 1-10As shown, a corn seed metering device includes a feed and grain classification component 1, a single grain discharging component 2 and a transmission connection component 3. The feed and grain classification component 1 includes a grain classification seat 7, which is composed of a grain classification shell seat 7-1, a brush 7-2, a grain classification shell cover 7-3, an iron ring 7-4, a rear cam 7-5 and a locking block 7-6. The grain classification shell cover 7-3 is installed at the gap of the grain classification shell seat 7-1, the brush 7-2 is installed in the gap formed by the grain classification shell seat 7-1 and the grain classification shell cover 7-3, the rear cam 7-5 is installed in the groove inside the grain classification shell seat 7-1, the iron ring 7-4 is installed on the inner ring of the grain classification shell seat 7-1, and the iron ring 7-4 is fixed by a locking block 7-6. The upper end of the grain classification seat 7 is provided with a feed shell 4 connected and fixed to the grain classification seat 7, and the grain classification seat 7 is provided with a grain classification plate 5 connected to the feed shell 4.

[0030] The grain classification plate 5 is composed of a fork seat 5-1, a fork 5-2, and a front cam 5-3. The fork seat 5-1 is connected and fixed to the transmission shaft (11) by a plug-in nut locking connection. The fork seat 5-1 is provided with 12 forks 5-2 distributed in an annular shape and extending to the inner wall of the grain classification seat 7. A front cam 5-3 is provided between the fork seat 5-1 and the fork 5-2 and is sleeved with the transmission shaft 11. The front cam 5-3 is installed in the groove inside the fork seat 5-1, and the forks 5-2 are evenly distributed and installed in the semicircular groove of the fork seat 5-1. The fork 5-2 is composed of a main fork 15, a movable fork 16, a torsion spring 17, a roller 18, and a fixed shaft 19. The rollers 18 are respectively installed at the end notches of the main fork 15 and the movable fork 16, the movable fork 16 is installed at the tail notch of the main fork 15, the torsion spring 17 is installed in the angle formed by the movable fork 16 and the main fork 15, and the fixed shaft 19 is installed in the torsion spring 17 and inserted into the holes of the movable fork 16 and the main fork 15.

[0031] The single-grain discharging component 2 includes a discharging wheel 12 fitted with the feed and granulation component 1. The outer periphery of the discharging wheel 12 is provided with a discharging housing 9 that is screwed and fixed to the granulation seat 7, and the outer end surface of the discharging housing 9 is provided with a discharging cover 10 that is screwed and fixed to the discharging housing 9. The discharging wheel 12 is installed in the discharging housing 9, the discharging cover 10 is fitted and installed with the discharging housing 9, the soft rubber sheet 8 is installed at the notch of the discharging cover 10, and the latch 6 is installed in the mounting hole of the discharging housing 9 and the discharging cover 10. The transmission connection component 3 includes a transmission shaft 11 that is fixedly inserted and connected with the discharging wheel 12 and the granulation disc 5. A bearing seat 14 is provided between the transmission shaft 11 and the granulation seat 7, and bearings 13 that are nested with the transmission shaft 11 are provided between the transmission shaft 11 and the bearing seat 14, and between the transmission shaft 11 and the discharging wheel 12.

[0032] Working process: Pour the corn kernels into the feeding shell 4. Due to gravity, the corn kernels poured into the grain-classifying shell seat 7-1 and the feeding shell 4 are located at the bottom. The transmission shaft 11 is rotated by the power source, and the front and rear ends of the transmission shaft 11 pass through the hole of the transmission shaft 11 through the hollow pins and are respectively stuck in the inner groove of the discharge wheel 12 and the inner groove of the fork seat 5-1 to achieve synchronous rotation. When the transmission shaft 11 rotates, it drives the fork seat 5-1 to rotate, and the fork seat 5-1 drives the fork 5-2 installed therein to make circumferential motion. When the fork 5-2 is located at the bottom of the grain-classifying shell seat 7-1, it is in an open state, and the corn kernels at the bottom can be picked up in this state. The transmission shaft 11 rotates again, and the fork 5-2 rotates a certain angle along the inner circle of the grain-classifying shell seat 7-1 and enters a clamping state. Due to the groove designed on the head of the fork 5-2, at most only one corn kernel will be clamped.

[0033] When the corn kernels are pressed, the fork 5-2 rotates along the inner circle of the grain separation shell seat 7-1, and the excess corn kernels brought up will be removed by gravity and the brush 7-2 on the top of the grain separation shell seat 7-1. When the fork 5-2 rotates to the gap of the grain separation shell cover 7-3, the fork 5-2 is in a pressing state at this time, and when it reaches the gap, it will give the corn kernels a pressing force, and the corn kernels will be shot through the gap to the stop groove of the discharge wheel 12 that rotates synchronously with the fork seat 5-1). At the same time, because a soft rubber sheet 8 is installed at one end of the gap, the inside of the soft rubber sheet 8 is rubber, which absorbs the force of the corn kernels, so that the corn kernels are stably stopped in the stop groove of the discharge wheel 12, and there will be no problem of corn kernels popping out. When the next fork 5-2 presses the corn kernels and rotates to the gap, the next stop groove of the discharge wheel 12 arrives at the same time. This process continues, thereby completing the grain separation process of the corn kernels piled into individual corn kernels.

[0034] Working principle of the shift fork 5-2: the front cam 5-3 and the rear cam 7-5 have convex and concave parts. The front cam 5-3 and the rear cam 7-5 are fixedly mounted on the bearing seat 14, and the bearing seat 14 is fixedly connected with the grain separation shell seat 7-1 and the discharge shell 9, so that when the transmission shaft rotates, the front cam 5-3 and the rear cam 7-5 are in a fixed state.

[0035] When the fork seat 5-1 rotates, because the tail of the fork 5-2 is equipped with two rollers 18, the fork 5-2 moves in the groove formed by the front cam 5-3 and the rear cam 7-5 in a linear contact motion, which reduces friction and increases service life. Because the torsion spring 17 is installed in the tail of the fork 5-2, and the initial state angle of the torsion spring 17 is greater than the angle required for the inner groove formed by the front cam 5-3 and the rear cam 7-5, the torsion spring 17 needs to be pre-tightened when the fork 5-2 is installed to ensure that the two rollers 18 always keep in contact with the surface of the front cam 5-3 and the rear cam 7-5 when the fork 5-2 is in idle motion.

[0036] When one roller 18 of the fork 5-2 contacts the concave portion of the front cam 5-3 and the other roller 18 contacts the convex portion of the rear cam 7-5, the entire fork 5-2 will rotate outwards by a certain angle based on the grain separation shell seat 7-1, and the state is now in a compressed state.

[0037] When one roller 18 of the shift fork 5-2 contacts the raised part of the front cam 5-3 and the other roller 18 contacts the recessed part of the rear cam 7-5, the entire shift fork 5-2 will rotate inwards by a certain angle based on the grain-classifying shell seat 7-1. Since a torsion spring 17 is installed at the tail of the shift fork 5-2, the head of the shift fork 5-2 will be flush with the grain-classifying shell seat 7-1, and the state is now in an open state.

[0038] In summary, the corn seeding device has the characteristics of compact structure, good operation stability and high use efficiency, reduces the probability of missed seeding and re-seeding of corn seeds, and improves seeding efficiency and quality.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0040] In summary, the above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A corn seed metering device, characterized in that: The invention comprises a feed and granulation assembly (1), a single-grain discharge assembly (2) and a transmission connection assembly (3); the feed and granulation assembly (1) comprises a granulation seat (7); the upper end of the granulation seat (7) is provided with a feed housing (4) connected and fixed to the granulation seat (7); the granulation seat (7) is provided with a granulation disc (5) connected to the feed housing (4); the single-grain discharge assembly (2) comprises a discharge wheel (12) fitted with the feed and granulation assembly (1); and the transmission connection assembly (3) comprises a transmission shaft (11) fixedly plugged and connected to the discharge wheel (12) and the granulation disc (5).

2. A corn seed metering device according to claim 1, characterized in that: The grain-classifying seat (7) is composed of a grain-classifying shell seat (7-1), a brush (7-2), a grain-classifying shell cover (7-3), an iron ring (7-4), a rear cam (7-5), and a locking block (7-6); the grain-classifying shell cover (7-3) is installed at a notch of the grain-classifying shell seat (7-1); the brush (7-2) is installed in a notch formed by the grain-classifying shell seat (7-1) and the grain-classifying shell cover (7-3); the rear cam (7-5) is installed in a groove inside the grain-classifying shell seat (7-1); the iron ring (7-4) is installed on an inner ring of the grain-classifying shell seat (7-1); and the iron ring (7-4) is fixed by a locking block (7-6).

3. A corn seed metering device according to claim 1, characterized in that: The grain classification plate (5) is composed of a fork seat (5-1), a fork (5-2), and a front cam (5-3); the fork seat (5-1) is fixedly connected to the transmission shaft (11) by means of a plug-in nut locking connection; the fork seat (5-1) is provided with a plurality of forks (5-2) distributed in an annular shape and extending to the inner wall of the grain classification seat (7); a front cam (5-3) sleeved with the transmission shaft (11) is provided between the fork seat (5-1) and the fork (5-2); the front cam (5-3) is installed in a groove in the fork seat (5-1); and the forks (5-2) are evenly distributed and installed in the semicircular groove of the fork seat (5-1).

4. A corn seed metering device according to claim 3, characterized in that: The shift fork (5-2) is composed of a main shift fork (15), a movable shift fork (16), a torsion spring (17), a roller (18), and a fixed shaft (19); the roller (18) is respectively mounted at the end notches of the main shift fork (15) and the movable shift fork (16); the movable shift fork (16) is mounted at the tail notch of the main shift fork (15); the torsion spring (17) is mounted within the angle formed by the movable shift fork (16) and the main shift fork (15); and the fixed shaft (19) is mounted within the torsion spring (17) and inserted into the holes of the movable shift fork (16) and the main shift fork (15).

5. The corn seed metering device according to claim 1, characterized in that: A bearing seat (14) is provided between the transmission shaft (11) and the particle classification seat (7), and bearings (13) nested with the transmission shaft (11) are provided between the transmission shaft (11) and the bearing seat (14), and between the transmission shaft (11) and the discharge wheel (12).

6. A corn seed metering device according to claim 1, characterized in that: The outer periphery of the discharging wheel (12) is provided with a discharging housing (9) which is screw-connected and fixed to the particle classification seat (7), and the outer end surface of the discharging housing (9) is provided with a discharging cover (10) which is screw-connected and fixed to the discharging housing (9).

7. A corn seed metering device according to claim 6, characterized in that: The discharge wheel (12) is installed in the discharge housing (9), the discharge cover (10) is installed in a close fit with the discharge housing (9), a soft rubber sheet (8) is installed at the notch of the discharge cover (10), and a latch (6) is installed in the installation holes of the discharge housing (9) and the discharge cover (10).

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