A left-right symmetrical seeder with adjustable mounting position

Abstract

The utility model discloses a kind of left-right symmetrical seeding device of installation position can be adjusted, and seeding device includes clamping piece, U type card, traction crossbar, hoisting clamping piece, short parallel support, long parallel support, seeding device support, seeder, seeding device mounting rack;Seeding device includes shell, shell side plate, transmission shaft, bearing seat, bearing, brush piece I, brush piece II, seeding disc transmission piece, seeding disc, seed cleaning piece and butterfly nut, wherein, shell, brush piece I, brush piece II, seed cleaning piece have mutual symmetry piece, form two independent seeding devices of left-right symmetry after assembly;Seeding device mounting rack has mutual symmetry piece.Seeding device is left-right symmetrical, by the cooperation installation with seeding device mounting rack, then install on seeding device support, left-right symmetrical seeding device is formed;Different form assembly after seeding device and seeding device mounting rack combination body are installed on two positions adjacent to traction crossbar, seeding under normal circumstances and narrow row spacing seeding can be realized.

Description

Technical Field

[0001] This utility model relates to a symmetrical seeder with an adjustable installation position, belonging to the field of agricultural machinery technology. Background Technology

[0002] In many regions, double-row planting on wide ridges has been introduced for corn cultivation, while three-row or four-row planting on wide ridges is used for soybeans. Wide-ridge planting helps increase soil temperature, reduce water evaporation, and improve the crop growth environment. As a result, there are different requirements for the lateral planting spacing of the planting equipment. Existing planters can generally achieve a row spacing of more than 16cm, but some planting requires a smaller row spacing. Therefore, new planters with adjustable row spacing, a large adjustment range, and convenient adjustment are needed.

[0003] This utility model is an adjustable, symmetrical seeder with a row spacing that can be adjusted to a minimum of 10cm or more. Summary of the Invention

[0004] This utility model provides a left-right symmetrical seeder with adjustable installation position. It has a simple structure, is easy to assemble and disassemble, and the row spacing is easy to adjust.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a left-right symmetrical seeder with adjustable installation position, including a clamp, a U-shaped clamp, a traction crossbar, a hoisting clamp, a short parallel bracket, a long parallel bracket, a seeder bracket, a seeder, and a seeder mounting frame; the seeder includes a shell, a shell side plate, a drive shaft, a bearing seat, a bearing, a brush component I, a brush component II, a seeder tray drive component, a seeder tray, a seeder hopper, a seed cleaning plate, and a wing nut; wherein, the shell, brush component I, brush component II, seed cleaning plate, and seeder tray all have symmetrical structural components, which, after assembly, form two independent left-right symmetrical seeders; the seeder bracket has mutually symmetrical components.

[0006] After the clamps and lifting clamps are assembled using U-shaped clamps, they are installed on the traction crossbar. After determining the appropriate spacing between two adjacent sets of lifting clamps, the nuts on the U-shaped clamps are tightened to fix the clamps and lifting clamps to their corresponding positions on the traction crossbar. One end of the upper and lower sets of short parallel brackets or the upper and lower sets of long parallel brackets are respectively installed with the upper and lower mounting holes of the lifting clamps, and the other end of the upper and lower sets of short parallel brackets or the upper and lower sets of long parallel brackets are installed with the upper and lower mounting holes of the seeder bracket. The installation of the support frame and the upper and lower sets of long parallel supports ensures that adjacent seeder supports are staggered in front and behind, avoiding interference between adjacent seeders and thus determining the spacing between adjacent seeding rows. The mounting holes on the seeder support frame correspond to the mounting holes on the seeder mounting bracket, which is then bolted to the seeder support frame. The seeder mounting bracket has two relative forms, corresponding to the left and right symmetrical seeders. The mounting holes on the seeder mounting bracket correspond to the mounting holes on the mounting ears and are connected by bolts.

[0007] The symmetrical seeder includes a wing nut, a seeding tray, a seeding tray drive mechanism, brush component I, brush component II, a drive shaft, a seed cleaning disc, a seeding inlet, a housing, housing side plates, bearings, and bearing seats. The housing, brush component I, brush component II, seed cleaning disc, and seeding tray all have symmetrical structural components, forming a symmetrical seeder after assembly. A central partition within the housing divides it into two cavities, one on the front and one on the back. Brush components I and II are mounted on the central partition of the front cavity within the housing. The seeding tray drive mechanism is installed together with the seeding tray and secured by a wing nut. The drive shaft passes through the seeding tray drive mechanism, which has threaded holes for screws used to secure the drive shaft. After the nail is installed, the seed tray transmission component drives the seed tray to rotate along with the drive shaft. The side plate of the housing forms a reverse cavity after installation, which is the buffer chamber for seeds to enter the housing. There is a mounting hole in the middle of the side plate of the housing corresponding to the bearing seat. Two bearings are installed in the bearing seat, and there is a certain distance between the two bearings. The drive shaft passes through the two bearings in the bearing seat, which ensures the flexible rotation and positioning of the drive shaft. The bearing seat is installed on the side plate of the housing. The seed cleaning plate is installed inside the front cavity of the housing to protect the seeds from friction damage during the process of falling to the seeding port. The seeding port is installed at the bottom of the housing. The holes on the seed tray ensure that there is only one seed in each hole, which improves the accuracy of seeding.

[0008] The beneficial effects of this utility model are: when the left and right symmetrical seeder with adjustable installation position sows different crops and different row spacings, different row spacings can be achieved by adjusting the spacing of the clips and quickly installing the U-shaped clips; the two adjacent seeder supports adopt a relative installation form, that is, the seeder discs installed on the two seeder supports correspond to each other. In this case, the distance between the two adjacent seeders can be adjusted to the minimum, thereby achieving the minimum row spacing and making the minimum row spacing reach more than 10cm. Attached Figure Description

[0009] Figure 1 This is the front view of the present utility model.

[0010] Figure 2 This is a perspective view of the present utility model.

[0011] Figure 3 This is a top view of the present invention.

[0012] Figure 4 A 3D view of the seeder mounting frame.

[0013] Figure 5 A 3D view of the seeder assembly.

[0014] Figure 6 This is an assembly drawing of the shell, brush part I, brush part II, and seed cleaning plate.

[0015] Figure 7 Exploded view of the seeder assembly.

[0016] Figure 8 This is a three-dimensional view of the left side of the casing.

[0017] Figure 9 This is a three-dimensional view of the right side of the casing.

[0018] Figure 10 This is a 3D view of the seeding tray transmission components.

[0019] Figure 11 This is a 3D view of brush part I.

[0020] Figure 12 This is a 3D view of brush part II.

[0021] Figure 13 This is a 3D view of the seeding tray.

[0022] Numbering on the map: 1. Clip, 2. U-shaped clip, 3. Traction crossbar, 4. Lifting clip, 5. Short parallel bracket, 6. Long parallel bracket, 7. Seeder bracket, 8. Seeder, 801. Bearing seat, 802. Bearing, 803. Housing side plate, 804. Housing, 8041. Seeder seed outlet, 8042. Seed flow outlet, 8043. Middle partition plate, 8044. Center hole shoulder, 8045. Mounting ear, 8046. Hopper, 8047. Connecting ear, 805. Seeder tray transmission component, 8051. Positioning rod, 8 052, Bushing; 806, Drive Shaft; 807, Seed Cleaning Plate; 808, Brush Part I; 8081, Isolation Plate; 8082, Brush Part I Body; 8083, Isolation Brush; 809, Brush Part II; 8091, Brush Part II Body; 8092, Finishing Brush; 8093, Cleaning Brush; 810, Seeding Tray; 8101, Seeding Tray Mounting Hole; 8102, Seeding Tray Shaft Hole; 811, Wing Nut; 812, Seeding Inlet; 9, Seeder Mounting Frame; 901, Seeder Mounting Frame Slot; 902, Seeder Mounting Frame Mounting Hole; 903, Shaft End Slot; 904, Seeding Tray End Slot. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 13As shown, a left-right symmetrical seeder with adjustable installation position includes a clamp 1, a U-shaped clamp 2, a traction crossbar 3, a lifting clamp 4, a short parallel bracket 5, a long parallel bracket 6, a seeder bracket 7, a seeder 8, and a seeder mounting frame 9; the seeder 8 includes a bearing seat 801, a bearing 802, a housing side plate 803, a housing 804, a seeder seed outlet 8041, a seed flow outlet 8042, a middle partition 8043, a center hole shoulder 8044, a mounting ear 8045, a hopper 8046, a connecting ear 8047, a seed tray transmission component 805, a positioning rod 8051, a bushing 8052, a transmission shaft 806, a seed cleaning plate 807, a brush component I 808, a partition plate 8081, and a brush component I body 808. 2. Isolation brush 8083, brush part II 809, brush part II body 8091, sorting brush 8092, cleaning brush 8093, seeding tray 810, seeding tray mounting hole 8101, seeding tray shaft hole 8102, wing nut 811, seeding port 812; among which, the shell 804, seed cleaning plate 807, brush part I 808, brush part II 809, and seeding tray 810 all have symmetrical structural parts, which, after assembly, form two independent seeders 8 that are symmetrical on the left and right; the seeder mounting frame 9 includes the following structures: seeder mounting frame slot 901, seeder mounting frame mounting hole 902, shaft end slot 903, seeding tray end slot 904; clamp 1 and lifting clamp 4 are installed on the traction crossbar 3 after being combined by U-shaped clamp 2, and are then determined. After the two adjacent sets of lifting clamps 4 are spaced appropriately, tighten the nuts on the U-shaped clamps 2, so that the clamps 1 and lifting clamps 4 are fixed to the corresponding positions of the traction crossbar 3 by the combination of the U-shaped clamps 2; one end of the upper and lower sets of short parallel brackets 5 or the upper and lower sets of long parallel brackets 6 are respectively installed with the upper and lower mounting holes of the lifting clamps 4, and the other end of the upper and lower sets of short parallel brackets 5 or the upper and lower sets of long parallel brackets 6 are respectively installed with the upper and lower mounting holes of the seeder bracket 7; the installation of the upper and lower sets of short parallel brackets 5 and the upper and lower sets of long parallel brackets 6 makes the two adjacent seeder brackets 7 staggered in front and behind, avoiding interference between the two adjacent seeders 8, thus determining the adjacent sowing row spacing; seeder bracket The mounting holes on the frame 7 correspond to the mounting holes 902 on the seeder mounting frame 9. The seeder mounting frame 9 is mounted on the seeder bracket 7 with bolts. The seeder mounting frame 9 has two relative forms, namely, the positions of the shaft end groove 903 and the seeding tray end groove 904 are interchanged, corresponding to the left and right symmetrical seeders 8. One end of the seeder 8 on which the seeding tray 810 is mounted corresponds to the seeding tray end groove 904, and the other end corresponds to the shaft end groove 903. The drive shaft 806 at the end of the seeder 8 on which the seeding tray 810 is mounted extends a small distance and occupies a small lateral distance; the drive shaft 806 at the other end extends a long distance, and the power and transmission mechanism are transmitted at this end. Therefore, this end occupies a large lateral distance.The seeder mounting bracket slot 901 on the seeder mounting bracket 9 corresponds to the mounting hole on the mounting ear 8045 and is connected by bolts. Different positions of the bolts within the seeder mounting bracket slot 901 allow for fine-tuning of the lateral position of the seeder 8 on the seeder mounting bracket 9. Adjacent seeder brackets 7 are installed in a symmetrical configuration, meaning the seeding discs 810 on the seeders 8 mounted on the two seeder brackets 7 correspond to each other. This configuration allows for minimizing the distance between adjacent seeders 8, thereby achieving the minimum spacing between seeding rows.

[0025] The symmetrical seeder 8 includes a bearing seat 801, a bearing 802, a housing side plate 803, a housing 804, a seeder outlet 8041, a seed flow outlet 8042, a middle partition 8043, a center hole shoulder 8044, a mounting ear 8045, a hopper 8046, a connecting ear 8047, a seed tray transmission component 805, a positioning rod 8051, a bushing 8052, a transmission shaft 806, a seed cleaning plate 807, a brush component I 808, a partition plate 8081, a brush component I body 8082, a partition brush 8083, a brush component II 809, a brush component II body 8091, and a finishing brush. The device comprises a brush 8092, a cleaning brush 8093, a seeding tray 810, a seeding tray mounting hole 8101, a seeding tray shaft hole 8102, a wing nut 811, and a seeding port 812. The housing 804, seed cleaning plate 807, brush component I 808, brush component II 809, and seeding tray 810 all have symmetrical structural components, forming two independent, symmetrical seeders 8 after assembly. A middle partition 8043 within the housing 804 divides the housing 804 into two cavities, one on the front and one on the back. Brush component I 808 and brush component II 809 are mounted on the middle partition 8043 of the front cavity within the housing and secured with bolts. The seed tray drive component 805 and the seed tray 810 are mounted together by a positioning rod 8051 through the seed tray mounting hole 8101. The end face of the bushing 8052 is tightly against the end face of the seed tray 810 and is secured by a wing nut 811. The drive shaft 806 passes through the seed tray drive component 805 and the seed tray shaft hole 8102. The seed tray drive component 805 has a threaded hole for a screw to secure the drive shaft 806. Tightening the screw causes the seed tray drive component 805 to drive the seed tray 810 to rotate together with the drive shaft 806. The center hole shoulder 8044 is in close contact with the end face of the seed tray drive component 805. The housing side plate 803 and The connecting lug 8047 is bolted together, forming a reverse cavity between the housing side plate 803 and the housing 804. This cavity serves as a buffer for seeds entering the housing. The housing side plate 803 has mounting holes corresponding to the bearing seat 801. Two bearings 802 are installed inside the bearing seat 801, with a certain distance between them. The drive shaft 806 passes through the two bearings 802 inside the bearing seat 801, ensuring flexible rotation and positioning of the drive shaft 806. The bearing seat 801 is mounted on the housing side plate 803. The seed cleaning plate 807 is installed inside the front cavity of the housing to protect the seeds from friction damage during their fall to the seed outlet 8041 of the seeder. The seeding outlet 812 is installed at the lower part of the housing 804. The holes on the seeding tray 810 ensure that only one seed can be placed in each hole, improving the accuracy of seeding.

[0026] The seeding tray 810 has a seeding tray shaft hole 8102 at its center, and the seeding tray mounting hole 8101 corresponds to the positioning rod 8051 of the seeding tray transmission component 805. The front edge of the seeding tray 810 has a flange and a pit suitable for seed sinking. The back of the seeding tray 810 has a ring and reinforcing ribs radiating from the center to the edge.

[0027] The brush component I 808 consists of an isolation plate 8081, a brush component I body 8082, and an isolation brush 8083. The function of the isolation plate 8081 is to prevent excess seeds outside the seed holes from falling into the seed outlet 8041 of the seeder. The isolation brush 8083 is attached to the periphery of the brush component I body 8082. The function of the isolation brush 8083 is to press down the seeds in the seed holes to prevent the seeds in the seed holes from falling out of the seed holes as the seeding tray 810 rotates.

[0028] The brush component II 809 consists of a brush component II body 8091, a sorting brush 8092, and a cleaning brush 8093. The sorting brush 8092 and the cleaning brush 8093 are attached to the surface of the brush component II body 8091. The function of the sorting brush 8092 is to prevent excess seeds from passing through the holes as the seeding tray 810 rotates, thereby ensuring that there is only one seed in each hole. The function of the cleaning brush 8093 is to smoothly clean the seeds in the holes of the seeding tray 810 and let them fall into the seed outlet 8041 of the seeder.

[0029] The intermediate partition 8043 of the housing 804 divides the housing 804 into two cavities, one on the front and one on the back. The cavity on the front of the housing 804 is a seeding cavity, and the cavity on the back of the housing 804, when assembled with the side plate 803, forms a seed buffer. The intermediate partition 8043 has a central hole and a central hole shoulder 8044 at the center of the front side, through which the drive shaft 806 passes. The central hole shoulder 8044 contacts and limits the end face of the seeding tray transmission component 805; the middle partition 8043 has mounting holes corresponding to the brush component I 808 and the brush component II 809 at the corresponding positions; the bottom inner side of the front of the shell 804 has a seeder outlet 8041 that connects and cooperates with the seeding port 812; the edge of the middle partition 8043 has a seed flow port 8042; the upper part of the shell 804 has a hopper 8046, and the two sides of the hopper 8046 have connecting ears 8047 corresponding to the positions of the shell side plate 803; the two sides of the shell 804 have mounting ears 8045, and the two end faces of the mounting ears 8045 have mounting holes corresponding to the seeder mounting frame 9.

[0030] The sowing tray drive component 805 is assembled with the sowing tray 810. The positioning rod 8051 on the sowing tray drive component 805 engages with the sowing tray mounting hole 8101. The end face of the bushing 8052 is in close contact with the end face of the sowing tray 810. The positioning rod 8051 is threaded and tightened by the wing nut 811, which can be quickly tightened and disassembled. The shoulder of the sowing tray drive component 805 has a threaded hole for tightening. It is tightened with the drive shaft 806 by the set screw, so that the sowing tray drive component 805 and the drive shaft 806 rotate together and transmit power from the drive shaft 806, so that the sowing tray drive component 805 drives the sowing tray 810 to rotate. At the same time, the end face of the sowing tray drive component 805 contacts and limits the center hole shoulder 8044 to ensure that the distance between the sowing tray 810 and the middle partition plate 8043 is fixed.

[0031] The seeder housing 803, seed cleaning plate 807, brush part I 808, brush part II 809, and seeding tray 810 all have symmetrical structural parts, which, after assembly, form two independent seeders 8 that are symmetrical from left to right; the seeder mounting frame 9 has mutually symmetrical parts.

[0032] In specific operation, clamp 1 and lifting clamp 4 are assembled and installed on the traction crossbar 3 using U-shaped clamps 2. After determining the appropriate spacing between two adjacent sets of lifting clamps 4, the adjacent sowing row spacing is determined. Tighten the nuts on the U-shaped clamps 2 to fix clamp 1 and lifting clamp 4 to the corresponding positions on the traction crossbar 3 using the U-shaped clamps 2. One end of the upper and lower sets of short parallel supports 5 or the upper and lower sets of long parallel supports 6 are respectively installed with the upper and lower mounting holes of the lifting clamp 4, and the other end of the upper and lower sets of short parallel supports 5 or the upper and lower sets of long parallel supports 6 are installed with the upper and lower mounting holes of the seeder bracket 7. The upper and lower sets of short parallel supports 5 and the upper and lower sets of long parallel supports 6... The installation arrangement ensures that adjacent seeder brackets 7 are staggered in front-to-back position, preventing interference between adjacent seeders 8. The mounting holes on the seeder bracket 7 correspond to the mounting holes 902 on the seeder mounting frame 9, which is bolted to the seeder bracket 7. The seeder mounting frame 9 has two relative forms, corresponding to the symmetrical seeders 8. One end of the seeder 8 with the seeding disc 810 mounted aligns with the seeding disc end slot 904, and the other end aligns with the shaft end slot 903. The drive shaft 806 at the end of the seeder 8 with the seeding disc 810 extends a smaller distance, occupying less lateral space. The extension of the drive shaft 806 at the other end of the seeder 8 is also smaller. The planter 8 occupies a large lateral space because the power and transmission mechanism are transmitted at this end. The planter mounting bracket 9 has a slot 901 on the planter mounting bracket 9 that corresponds to the mounting hole on the mounting ear 8045, and they are connected by bolts. The bolts, positioned at different points within the slot 901, allow for fine-tuning of the planter 8's lateral position on the planter mounting bracket 9. Adjacent planter brackets 7 are installed in a reverse-opposite configuration, meaning the seeding discs 810 on the planters 8 mounted on the two planter brackets 7 correspond to each other. This allows for minimizing the spacing between the planters 8, thus achieving the minimum spacing between seeding rows. All components of the planter 8 are installed according to their interrelationships. Power is transmitted through the drive shaft 806, which rotates freely under the limitation of bearing seat 801 and bearing 802. The drive shaft 806 drives the seeding disc drive component 805 to rotate. The seeding disc drive component 805 and the seeding disc 810 are installed together by the positioning rod 8051 through the seeding disc mounting hole 8101. The end face of the bushing 8052 is close to the end face of the seeding disc 810 and is tightened by the wing nut 811. The drive shaft 806 passes through the seeding disc drive component 805 and the seeding disc shaft hole 8102. The seeding disc drive component 805 has a threaded hole for screws to tighten the drive shaft 806. After tightening the screws, the seeding disc drive component 805 drives the seeding disc 810 to rotate together with the drive shaft 806.Seeds enter from hopper 8046 and are assembled with the cavity on the reverse side of shell 804 and shell side plate 803 to form a seed buffer. The center of the front side of the intermediate partition plate 8043 has a central hole through which the drive shaft 806 passes and a central hole shoulder 8044. The central hole shoulder 8044 contacts and limits the seeding tray transmission component 805; the seeds enter the cavity on the front of the housing 804 through the seed flow port 8042 at the edge of the intermediate partition 8043; under the action of gravity, they enter the area around the holes of the rotating seeding tray 810 in sequence. The sorting brush 8092 on the brush component I 808, which is attached to the surface of the brush component I body 8082, sorts the seeds into the holes of the seeding tray 810 in sequence and removes excess seeds around the holes, ensuring that there is only one seed in each hole. As the seeding tray 810 continues to rotate, the isolation brush 8083 on the brush component II 809, which is attached to the brush component II body 8091, is positioned directly opposite the holes. The isolation brush 8083 presses the seeds in the holes to prevent them from falling out of their current position and also prevents other seeds from squeezing into the holes. When the seeds in the seedhole reach the isolation plate 8081 of the brush body 8091 on the brush part II 809, the isolation plate 8081 separates the excess seeds around the seedhole from the seeds inside the seedhole. Then, the seeds in the seedhole on the sowing tray 810 rotate to the cleaning brush 8093 attached to the surface of the brush body 8082 on the brush part I 808. The cleaning brush 8093 removes the seeds from the seedhole and they fall into the seed outlet 8041 of the seeder. The arc-shaped surface of the cleaning disc 807 installed here protects the seeds from being touched or damaged by the sharp corner of the seed outlet 8041, thus safely passing through the seed outlet 8041 and continuing to fall into the sowing port 812 connected to the seed outlet 8041, completing a full sowing process.

Claims

1. A symmetrical seeder with an adjustable installation position, characterized in that: Includes clamps (1), U-shaped clamps (2), traction crossbars (3), hoisting clamps (4), short parallel brackets (5), long parallel brackets (6), seeder brackets (7), seeders (8), and seeder mounting frames (9); The seeder (8) includes a bearing housing (801), a bearing (802), a housing side plate (803), a housing (804), a seeder seed outlet (8041), a seed flow outlet (8042), a middle partition plate (8043), a center hole shoulder (8044), a mounting ear (8045), a hopper (8046), a connecting ear (8047), a seed tray transmission component (805), a positioning rod (8051), a bushing (8052), a transmission shaft (806), a seed cleaning plate (807), a brush component I (808), a partition plate (8081), and a brush component I. The components include: body (8082), isolation brush (8083), brush part II (809), brush part II body (8091), sorting brush (8092), cleaning brush (8093), seeding tray (810), seeding tray mounting hole (8101), seeding tray shaft hole (8102), wing nut (811), and seeding port (812). Among them, the shell (804), seed cleaning plate (807), brush part I (808), brush part II (809), and seeding tray (810) all have symmetrical structural components, which, after assembly, form two independent seeders (8) that are symmetrical on the left and right. The seeder mounting frame (9) includes the following structures: seeder mounting frame slot (901), seeder mounting frame mounting hole (902), shaft end slot (903), and seed tray end slot (904). After the clamp (1) and the hoisting clamp (4) are combined with the U-shaped clamp (2), they are installed on the traction crossbar (3). After determining the appropriate spacing between two adjacent sets of hoisting clamps (4), the adjacent sowing row spacing is determined. Tighten the nuts on the U-shaped clamp (2) so that the clamp (1) and the hoisting clamp (4) are fixed in the corresponding positions on the traction crossbar (3) by the combination of the U-shaped clamp (2). One end of the upper and lower sets of short parallel brackets (5) or the upper and lower sets of long parallel brackets (6) are respectively installed with the upper and lower mounting holes of the hoisting clamp (4). The other ends of the two sets of long parallel supports (6) are installed corresponding to the upper and lower mounting holes of the seeder support (7); the installation of the upper and lower sets of short parallel supports (5) and the upper and lower sets of long parallel supports (6) makes the two adjacent seeder supports (7) staggered in front and behind, avoiding interference between the two adjacent seeders (8); the mounting holes on the seeder support (7) correspond to the seeder mounting bracket mounting holes (902) on the seeder mounting frame (9), and the seeder mounting frame (9) is installed on the seeder support (7) by bolts; the seeder mounting frame (9) has two opposite shapes The arrangement involves swapping the positions of the shaft end slot (903) and the seeding tray end slot (904), corresponding to the left and right symmetrical seeders (8). One end of the seeder (8) on which the seeding tray (810) is mounted corresponds to the seeding tray end slot (904), and the other end corresponds to the shaft end slot (903). The drive shaft (806) at the end of the seeder (8) on which the seeding tray (810) is mounted extends a short distance and occupies a small lateral distance; the drive shaft (806) at the other end extends a long distance, and the power and transmission mechanism are transmitted at this end, therefore, this end occupies a large lateral distance. The slot (901) of the seeder mounting bracket (9) corresponds to the mounting hole on the mounting ear (8045) and is connected by bolts. The bolts can be positioned at different positions in the slot (901) of the seeder mounting bracket to finely adjust the lateral position of the seeder (8) on the seeder mounting bracket (9). The two adjacent seeder brackets (7) adopt a relative installation form, that is, the seeding trays (810) on the seeders (8) installed on the two seeder brackets (7) correspond to each other. In this case, the distance between the two adjacent seeders (8) can be adjusted to be the smallest, thereby achieving the smallest spacing between the seeding rows.

2. The left-right symmetrical seeder with adjustable installation position according to claim 1, characterized in that: The seeder (8) includes a bearing seat (801), a bearing (802), a housing side plate (803), a housing (804), a seeder seed outlet (8041), a seed flow outlet (8042), a middle partition plate (8043), a center hole shoulder (8044), a mounting ear (8045), a hopper (8046), a connecting ear (8047), a seed tray transmission component (805), a positioning rod (8051), a bushing (8052), a transmission shaft (806), a seed cleaning plate (807), a brush component I (808), a partition plate (8081), a brush component I body (8082), a partition brush (8083), a brush component II (809), a brush component II body (8091), and a finishing brush (8094). 092), cleaning brush (8093), seeding tray (810), seeding tray mounting hole (8101), seeding tray shaft hole (8102), wing nut (811), seeding port (812), wherein the shell (804), seed cleaning plate (807), brush part I (808), brush part II (809), and seeding tray (810) all have symmetrical structural parts, which form two independent seeders (8) with left and right symmetry after assembly; the middle partition plate (8043) in the shell (804) divides the shell (804) into two cavities, and the brush part I (808) and brush part II (809) are installed on the middle partition plate (8043) of the front cavity in the shell and are tightened with bolts, and the seeding tray transmission part (805) The seeding tray (810) and the bushing (8052) are mounted together by a positioning rod (8051) through the seeding tray mounting hole (8101). The end face of the bushing (8052) is tightly attached to the end face of the seeding tray (810) and is fastened by a wing nut (811). The drive shaft (806) passes through the seeding tray drive component (805) and the seeding tray shaft hole (8102). The seeding tray drive component (805) has a threaded hole for a screw to fasten the drive shaft (806). After tightening the screw, the seeding tray drive component (805) drives the seeding tray (810) to rotate together with the drive shaft (806). The shoulder (8044) of the center hole is in close contact with the end face of the seeding tray drive component (805). The side plate (803) of the housing is connected to the connecting lug (8047) by bolts. The side plate (803) of the housing and the housing (804) form a reverse cavity, which is the buffer chamber for seeds to enter the housing. The side plate (803) of the housing has a mounting hole in the middle corresponding to the bearing seat (801). The bearing seat (801) is equipped with two bearings (802) with a certain distance between them. The drive shaft (806) passes through the two bearings (802) in the bearing seat (801), which ensures that the drive shaft (806) rotates flexibly and is positioned. The bearing seat (801) is installed on the side plate (803) of the housing. The seed cleaning plate (807) is installed on the inner side of the front cavity of the housing to protect the seeds from friction damage during the process of falling to the seed outlet (8041) of the seeder. The seed outlet (812) is installed at the lower part of the housing (804).The planting tray (810) ensures that each planting hole contains only one seed, improving planting accuracy.

3. A left-right symmetrical seeder with adjustable installation position according to claim 1, characterized in that: The seeding tray (810) has a seeding tray shaft hole (8102) in the center, and the seeding tray mounting hole (8101) corresponds to the positioning rod (8051) of the seeding tray transmission component (805). The front edge of the seeding tray (810) has a flange and a pit suitable for seed sinking. The back of the seeding tray (810) has a ring and reinforcing ribs radiating from the center to the edge.

4. A symmetrical seeder with adjustable installation position according to claim 1, characterized in that: The brush component I (808) consists of an isolation plate (8081), a brush component I body (8082), and an isolation brush (8083). The function of the isolation plate (8081) is to prevent excess seeds outside the seed holes from falling into the seed outlet (8041) of the seeder. The isolation brush (8083) is attached to the periphery of the brush component I body (8082). The function of the isolation brush (8083) is to press down the seeds in the seed holes to prevent the seeds in the seed holes from falling out of the seed holes as the seeding tray (810) rotates.

5. A symmetrical seeder with adjustable installation position according to claim 1, characterized in that: The brush part II (809) consists of a brush part II body (8091), a sorting brush (8092), and a cleaning brush (8093). The sorting brush (8092) and the cleaning brush (8093) are attached to the surface of the brush part II body (8091). The function of the sorting brush (8092) is to prevent excess seeds from passing through the holes as the seeding tray (810) rotates, thereby ensuring that there is only one seed in the hole. The function of the cleaning brush (8093) is to smoothly clean the seeds in the holes of the seeding tray (810) and let them fall into the seed outlet (8041) of the seeder.

6. A left-right symmetrical seeder with adjustable installation position according to claim 1, characterized in that: The shell (804) is divided into two cavities by a middle partition plate (8043). The cavity on the front of the shell (804) is a seeding cavity, and the cavity on the back of the shell (804) is assembled with the side plate (803) to form a seed buffer. The middle partition plate (8043) has a central hole and a central hole shoulder (8044) through which the drive shaft (806) passes. The central hole shoulder (8044) contacts and limits the end face of the seeding tray transmission component (805); the middle partition (8043) has mounting holes corresponding to the brush component I (808) and brush component II (809) at the corresponding positions; the bottom of the inner side of the front of the shell (804) has a seed outlet (8041) that connects and cooperates with the seeding port (812); the edge of the middle partition (8043) has a seed flow port (8042); the upper part of the shell (804) has a hopper (8046), and the two sides of the hopper (8046) have connecting ears (8047) corresponding to the positions of the side plates (803) of the shell; the two sides of the shell (804) have mounting ears (8045), and the two end faces of the mounting ears (8045) have mounting holes corresponding to the seeder mounting frame (9).

7. A left-right symmetrical seeder with adjustable installation position according to claim 1, characterized in that: The sowing tray drive component (805) is assembled with the sowing tray (810). The positioning rod (8051) on the sowing tray drive component (805) is engaged with the sowing tray mounting hole (8101). The end face of the bushing (8052) is close to the end face of the sowing tray (810). The positioning rod (8051) is threaded and tightened by the action of the wing nut (811), and can be quickly tightened and disassembled. The shoulder of the sowing tray drive component (805) has a threaded hole for tightening. It is tightened with the drive shaft (806) by the set screw, so that the sowing tray drive component (805) and the drive shaft (806) rotate together and transmit power from the drive shaft (806), so that the sowing tray drive component (805) drives the sowing tray (810) to rotate. At the same time, the end face of the sowing tray drive component (805) contacts and limits the center hole shoulder (8044), ensuring that the distance between the sowing tray (810) and the middle partition plate (8043) is fixed.

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