Multi-crop precision seeder

Abstract

The utility model relates to sowing machine technical field discloses a kind of multi-crop precision seeding machines, including rack, chain one, chain two and chain three, the inner wall bottom right side of the rack is provided with a chute, the inside of the chute is provided with adjusting mechanism, the adjusting mechanism is used to adjust sowing pitch, the right side of the rack is rotatably connected with rotating plate in front and back end, the adjacent between two The rotating plate is provided with mounting mechanism, and the mounting mechanism is used for quickly installing soil covering component;The adjusting mechanism includes multiple sliding blocks.In the utility model, by right side pull positioning pin, make sliding block remove fixed, sliding block is moved to the positioning hole position of corresponding pitch, positioning pin is loosened, positioning pin is made into positioning hole by spring, the lateral distance of all sliding blocks is adjusted synchronously, and then driving sliding block bottom's floating disc furrow opener and seed tube synchronous movement, the quick adaptation of sowing pitch is realized.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, and in particular to a multi-crop precision seeder. Background Technology

[0002] A seeder is an agricultural machine mainly used to accurately and efficiently sow crop seeds into the soil according to agronomic requirements, replacing manual sowing and improving the efficiency and quality of sowing operations. Because large-scale and precision planting of different crops is carried out in agricultural production, it is necessary to take into account both sowing accuracy and operational efficiency. A multi-crop precision seeder is needed to ensure that the seeds of different crops are evenly distributed and the seedlings emerge uniformly, while also improving planting efficiency and fertilizer utilization, thus achieving efficient and precise sowing of multiple crops.

[0003] Early seeding devices consisted of a seed box, a seed-discharging wheel, a furrow opener, and a fixed frame. The seed box stored seeds, the seed-discharging wheel discharging seeds through friction to complete the sowing, and the furrow opener cutting the soil to form seed furrows. Since the device could only complete the sowing action and did not integrate fertilization, additional fertilization operations were required, increasing the number of field operations and the degree of soil compaction. To solve the above problems, existing seeders use a fertilizer dispenser and independent pipelines to simultaneously complete sowing and stratified fertilization, reducing the number of operation steps. However, in actual use, since the furrow opener is directly fixed to the bottom of the frame with multiple sets of bolts, when it is necessary to adjust the sowing spacing according to different crops, the furrow opener and seed-discharging components must be disassembled and reassembled, which is time-consuming and labor-intensive and cannot meet the needs of users. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a multi-crop precision seeder, which aims to improve the problem of inconvenient adjustment of seeding spacing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-crop precision seeder, comprising a frame, chain one, chain two, and chain three. A sliding groove is provided on the bottom right side of the inner wall of the frame. An adjustment mechanism is provided inside the sliding groove for adjusting the seeding spacing. Rotating plates are rotatably connected to the front and rear ends of the right side of the frame. An installation mechanism is provided between adjacent rotating plates for quickly installing the soil covering component. The adjusting mechanism includes multiple sliders, the outer walls of which are slidably connected to the inner walls of the grooves. A fixing plate is fixedly connected to the top center of each slider. Positioning pins are slidably connected to the interior of each fixing plate. Limiting plates are fixedly connected to the left side of the outer walls of each positioning pin. Springs are fixedly connected between each limiting plate and its corresponding fixing plate. A limiting plate is fixedly connected to the bottom of the inner wall of the frame. Multiple positioning holes are provided on the right side of each limiting plate. The outer walls of each positioning pin are slidably connected to the inner walls of their respective positioning holes. A floating disc furrow opener is fixedly connected to the bottom left side of each slider. A seed metering pipe is fixedly connected to the inner side of each slider.

[0006] As a further description of the above technical solution: The installation mechanism includes two connecting shafts. The opposite sides of the two connecting shafts are rotatably connected to one side of the corresponding rotating plate. The front end of the front connecting shaft passes through the corresponding rotating plate. The outer walls of the two connecting shafts are threaded with threaded sleeves on adjacent sides. A rotating shaft is provided between the adjacent threaded sleeves. A soil covering wheel is fixedly connected to the outer wall of the rotating shaft. The top of the outer wall of the two threaded sleeves is threaded with a bolt. The bottom of the two bolts passes through the top of the outer wall of the corresponding threaded sleeve and is threaded to the left and right sides of the top of the outer wall of the rotating shaft, respectively.

[0007] As a further description of the above technical solution: The inner wall of the frame is fixedly connected to the top left and right sides of the inner wall. The bottom of the outer wall of the two storage boxes is connected to multiple discharge devices. The upper middle left and right sides of the inner wall of the frame are rotatably connected to discharge shafts. The outer walls of the two discharge shafts are rotatably connected to the inner side of the corresponding discharge devices. The bottom of the multiple discharge devices on the rear side is fixedly connected to flexible hoses.

[0008] As a further description of the above technical solution: A fixing rod is fixedly connected to the left side of the middle part of the inner wall of the frame, and a support rod is fixedly connected to the left side of the bottom of the inner wall of the frame. Multiple guide plates are fixedly connected to the top of the fixing rod and the support rod, and the positions of the multiple guide plates correspond to the positions of the corresponding discharge devices.

[0009] As a further description of the above technical solution: Sliding sleeves are fixedly connected to the front and rear sides of the left side of the frame. Sliding rods are slidably connected inside the two sliding sleeves. A limited-depth wheel is rotatably connected to the bottom of the two sliding rods on opposite sides. Bolts are threaded to the left side of the outer wall of the two sliding sleeves. The right end of each bolt passes through the left side of the corresponding sliding sleeve and is threaded to the left side of the sliding rod. A rotary tillage shaft is rotatably connected to the bottom of the left side of the inner wall of the frame.

[0010] As a further description of the above technical solution: Both discharge shafts have a sprocket 1 fixedly connected to the front end of the bracket. The two sprocket 1s are connected by a drive mechanism. A connecting rod is fixedly connected to the left side of the front end of the rotating plate. Sprocket 2 is fixedly connected to the outer wall of both the discharge shaft and the connecting rod on the right side. The two sprocket 2s are connected by a drive mechanism. Sprocket 3 is fixedly connected to the outer wall of both the connecting rod and the connecting shaft. The two sprocket 3s are connected by a drive mechanism. Multiple protective covers are provided on the front side of the frame.

[0011] As a further description of the above technical solution: Support plates are fixedly connected to the front and rear sides of the right end of the frame. Adjusting studs are threadedly connected to the top right side of the two support plates. Rotating blocks are fixedly connected to the adjacent top sides of the two rotating plates. The bottom ends of the two adjusting studs penetrate the top of the corresponding support plates and are rotatably connected to the top of the corresponding rotating blocks.

[0012] As a further description of the above technical solution: The two rotating plates are fixedly connected to the same mounting bracket on their right sides, and multiple scraping blades are fixedly connected to the inner side of the mounting bracket.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by pulling the positioning pin to the right, the positioning pin disengages from the corresponding positioning hole, thereby releasing the slider from fixation. At the same time, the limiting plate compresses the spring, moving the slider to the positioning hole position of the corresponding spacing. The positioning pin is then released, and the spring causes the positioning pin to engage with the positioning hole, simultaneously adjusting the lateral spacing of all sliders. This, in turn, drives the floating disc furrow opener at the bottom of the slider to move synchronously with the seed metering tube, achieving rapid adaptation of the sowing spacing.

[0014] 2. In this utility model, by unscrewing bolt one, bolt one is disengaged from the threaded connection with the rotating shaft. Then, the threaded sleeves on both sides are rotated. The threaded sleeves will move away from the rotating shaft along the connecting shaft axis, so that the rotating shaft and the covering wheel can be removed, thus completing the disassembly. When installing a new covering wheel, the threaded sleeves are rotated in the opposite direction so that they are fitted onto the rotating shaft along the connecting shaft axis. Bolt one is screwed in to fix the rotating shaft and the threaded sleeve, thus realizing the quick assembly of the covering wheel. Attached Figure Description

[0015] Figure 1 This is a perspective view of a multi-crop precision seeder proposed in this utility model; Figure 2 This is a front view of a multi-crop precision seeder proposed in this utility model; Figure 3 This is a cross-sectional view of the frame structure of a multi-crop precision seeder proposed in this utility model; Figure 4for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a partial structural exploded view of a multi-crop precision seeder proposed in this utility model; Figure 6 This is a side view of a multi-crop precision seeder proposed in this utility model.

[0016] Legend: 1. Frame; 2. Adjustment mechanism; 201. Slider; 202. Fixing plate; 203. Positioning pin; 204. Limiting plate; 205. Spring; 206. Limiting plate; 207. Positioning hole; 208. Floating disc furrow opener; 209. Seed metering pipe; 3. Installation mechanism; 301. Connecting shaft; 302. Threaded sleeve; 303. Rotating shaft; 304. Covering wheel; 305. Bolt 1; 4. Slide groove; 5. Storage box; 6. Discharge shaft; 7. Discharger; 8. 1. Hose; 9. Fixing rod; 10. Support rod; 11. Guide plate; 12. Sliding sleeve; 13. Sliding rod; 14. Bolt 2; 15. Depth limiting wheel; 16. Rotary tillage shaft; 17. Sprocket 1; 18. Chain 1; 19. Connecting rod; 20. Sprocket 2; 21. Chain 2; 22. Sprocket 3; 23. Chain 3; 24. Support plate; 25. Adjusting stud; 26. Rotating block; 27. Mounting frame; 28. Scraper blade; 29. ​​Rotating plate; 30. Protective cover. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 3 and Figure 4 The present invention provides an embodiment of a multi-crop precision seeder, comprising a frame 1, a chain 18, a chain 21, and a chain 3 23. The frame 1 serves as the mounting and support carrier for the components. A sliding groove 4 is provided on the bottom right side of the inner wall of the frame 1. An adjustment mechanism 2 is provided inside the sliding groove 4. The adjustment mechanism 2 is used to adjust the seeding spacing. Rotating plates 29 are rotatably connected to the front and rear ends of the right side of the frame 1. An installation mechanism 3 is provided between the adjacent rotating plates 29. The installation mechanism 3 is used to quickly install the soil covering components. Adjustment mechanism 2 includes multiple sliders 201, the outer walls of which are slidably connected to the inner wall of slide groove 4. Slide groove 4 provides a lateral sliding track for sliders 201. Slider 201 drives furrow opener and seeding tube 209 to adjust their spacing synchronously by moving laterally. Fixing plates 202 are fixedly connected to the top center of each slider 201. Fixing plates 202 provide a sliding mounting channel for positioning pins 203, restricting the positioning pins 203 to move only in the left and right directions. Positioning pins 203 are slidably connected inside each fixing plate 202. The left end of the positioning pin 203 can be inserted into the positioning hole 207 of the limiting plate 206 to lock the position of slider 201. Limiting pieces 204 are fixedly connected to the left side of the outer wall of each positioning pin 203. Limiting pieces 204 can compress springs 205, providing a force point for the positioning pins 203 to reset. The multiple limiting pieces 204 are connected to corresponding springs 205. Springs 205 are fixedly connected between adjacent fixed plates 202. Springs 205 push the limiting plate 204 to the left through the reset elastic force, causing the positioning pin 203 to automatically insert into the positioning hole 207. A limiting plate 206 is fixedly connected to the bottom of the inner wall of the frame 1. The limiting plate 206 provides locking points with different spacing for the positioning pin 203. Multiple positioning holes 207 are opened on the right side of the limiting plate 206. The outer wall of the multiple positioning pins 203 is slidably connected to the inner wall of the corresponding positioning hole 207. A floating disc furrow opener 208 is fixedly connected to the bottom left side of the slider 201. The floating disc furrow opener 208 digs seed furrows of consistent depth in the soil to provide a channel for the seeds to fall. A seed discharge pipe 209 is fixedly connected to the inner side of the slider 201. The upper end of the seed discharge pipe 209 is connected to the hose 8, and the lower end is aligned with the seed furrow to transport the seeds into the seed furrow and avoid spillage. Storage boxes 5 are fixedly connected to the top left and right sides of the inner wall of the frame 1. The storage boxes 5 realize the separate storage of seeds and fertilizers to avoid mixing. Multiple feeders 7 are connected to the bottom of the outer wall of the two storage boxes 5. The upper left and right sides of the inner wall of the frame 1 are rotatably connected to the feed shaft 6. The feeder 7 drives the internal components to rotate through the feed shaft 6 to control the single discharge amount of seeds and fertilizers. The outer walls of the two feed shafts 6 are rotatably connected to the inner side of the corresponding feeder 7. The bottom of the multiple feeders 7 on the rear side is fixedly connected to the hose 8, which flexibly connects the rear feeder 7 to the seed discharge pipe 209 through the hose 8. Specifically, before operation, the sowing spacing needs to be adjusted according to the crop type. Pull the positioning pin 203 to the right. The positioning pin 203 drives the limiting plate 204 to compress the spring 205, so that the left end of the positioning pin 203 disengages from the corresponding positioning hole 207 on the limiting plate 206. At this time, the slider 201 is released from its fixed position and slides laterally along the slide groove 4 at the bottom of the frame 1. By moving the slider 201 to the position of the corresponding spacing positioning hole 207 on the limiting plate 206, the sowing spacing is determined. Then, release the positioning pin 203. Under the action of the return elastic force, the spring 205 pushes the limiting plate 204 to the left, causing the positioning pin 203 to re-engage. The new positioning hole 207 completes the spacing positioning of a single slider 201, and the lateral spacing of all sliders 201 is adjusted synchronously. This drives the floating disc furrow opener 208 at the bottom of the slider 201 and the seed discharge tube 209 on the right side of the inner wall to move synchronously, so as to achieve rapid adaptation of the sowing spacing. After the spacing is adjusted, the seeds in the storage box 5 fall through the feeder 7. When the feed shaft 6 in the upper part of the frame 1 rotates, it drives the feeder 7 to precisely control the amount of seeds discharged. The seeds are transported through the seed discharge tube 209. The rear feeder 7 is connected to the corresponding seed discharge tube 209 through the hose 8 to ensure that the seeds fall stably into the seed furrow opened by the floating disc furrow opener 208.

[0019] Reference Figure 1 , Figure 2 and Figure 5The installation mechanism 3 includes two connecting shafts 301. The opposite sides of the two connecting shafts 301 are rotatably connected to one side of the corresponding rotating plate 29. The connecting shafts 301 provide an installation base for the threaded sleeves 302 and can also transmit power through the rotation of the covering wheel 304. The front end of the front connecting shaft 301 passes through the corresponding rotating plate 29, and the rotating plate 29 can rotate around the frame 1, driving the covering wheel 304 to adjust its overall angle. Threaded sleeves 302 are threadedly connected to adjacent sides of the outer walls of the two connecting shafts 301. The threaded sleeves 302 can move axially along the connecting shaft 301 by rotation. A rotating shaft 303 is provided between two adjacent threaded sleeves 302. The rotating shaft 303 serves as the mounting carrier for the covering wheel 304. The covering wheel 304 rotates through friction with the ground, transmitting power through the rotating shaft 303. The covering wheel 304 is fixedly connected to the outer wall of the rotating shaft 303. During operation, the covering wheel 304 rolls to cover the planting furrow and compact the soil. Bolts 305 are threaded to the top of the outer walls of both threaded sleeves 302. The bottoms of the two bolts 305 penetrate the top of the corresponding threaded sleeve 302 and respectively connect to the left and right threads on the top of the outer wall of the rotating shaft 303. The connection is made by bolt 305 to lock the threaded sleeve 302 and the rotating shaft 303, preventing relative rotation between the rotating shaft 303 and the threaded sleeve 302 during operation. Support plates 24 are fixedly connected to the front and rear sides of the right end of the frame 1. The support plates 24 provide mounting support for the adjusting studs 25, limiting their movement to only the vertical direction. Adjusting studs 25 are threadedly connected to the top right side of both support plates 24. The adjusting studs 25 move vertically by rotating, causing the rotating plate 29 to rotate around the connecting shaft 301, adjusting the contact pressure between the soil covering wheel 304 and the ground. The tops of the two rotating plates 29... A rotating block 26 is fixedly connected to each adjacent side. The rotating block 26 converts the up and down movement of the adjusting stud 25 into the angular rotation of the rotating plate 29. The bottom ends of the two adjusting studs 25 pass through the top of the corresponding support plate 24 and are rotatably connected to the top of the corresponding rotating block 26. The same mounting frame 27 is fixedly connected to the right side of the two rotating plates 29. The mounting frame 27 provides a mounting carrier for multiple scraping blades 28. Multiple scraping blades 28 are fixedly connected to the inner side of the mounting frame 27. When the scraping blades 28 are in operation, they contact the outer wall of the covering wheel 304 and scrape off the clay adhering to the surface of the covering wheel 304. Specifically, when it is necessary to replace the appropriate covering wheel 304 or to repair the covering wheel 304 due to different sowing spacing requirements, unscrew the bolts 305 on the top of the two threaded sleeves 302. After the bolts 305 are disengaged from the threaded connection with the rotating shaft 303, the fixed state between the threaded sleeves 302 and the rotating shaft 303 is released. Then rotate the threaded sleeves 302 on both sides. Since the threaded sleeves 302 are threadedly connected to the connecting shaft 301, the threaded sleeves 302 will move away from the rotating shaft 303 along the axial direction of the connecting shaft 301. After the threaded sleeves 302 on both sides are disengaged from both ends of the rotating shaft 303, remove the covering wheel 304, thus completing the disassembly operation. When installing the new covering wheel 304, align the two ends of the rotating shaft 303 of the new covering wheel 304 with the two connecting shafts 301 on both sides and rotate in the opposite direction. The threaded sleeve 302 is fitted axially onto the rotating shaft 303 along the connecting shaft 301. After the threaded sleeve 302 and the rotating shaft 303 are in contact, the bolt 305 is screwed in, so that it passes through the threaded sleeve 302 and is threadedly connected to the top of the rotating shaft 303. The rotating shaft 303 and the threaded sleeve 302 are fixed by the bolt 305, thereby realizing the quick assembly of the covering wheel 304. When the adjusting stud 25 is rotated, it moves up and down along the support plate 24, driving the rotating block 26 and the rotating plate 29 to rotate around the connecting shaft 301, adjusting the contact pressure between the covering wheel 304 and the ground, and avoiding uneven soil covering caused by the angular deviation of the covering wheel 304. The scraper 28 on the inner side of the mounting frame 27 scrapes off the sticky soil on the outer wall of the covering wheel 304 during operation, preventing the surface of the covering wheel 304 from being covered with sticky soil and improving the work efficiency.

[0020] Reference Figure 2 , Figure 3 and Figure 6A fixed rod 9 is fixedly connected to the left side of the middle part of the inner wall of the frame 1, and a support rod 10 is fixedly connected to the left side of the bottom of the inner wall of the frame 1. Multiple guide plates 11 are fixedly connected to the top of the fixed rod 9 and the support rod 10. The fixed rod 9 and the support rod 10 provide support for the guide plates 11. The positions of the multiple guide plates 11 correspond to the positions of the corresponding dischargers 7. The guide plates 11 guide the fertilizer to fall onto the ground along the plate. Sliding sleeves 12 are fixedly connected to the front and rear sides of the left side of the frame 1. The sliding sleeves 12 provide a sliding channel for the sliding rods 13 to slide up and down. The sliding rods 13 are slidably connected inside the two sliding sleeves 12. The sliding rods 13 slide up and down. The machine moves the depth limiting wheel 15 up and down synchronously, adjusting its depth into the soil. The bottom of each of the two sliding rods 13, on opposite sides, is rotatably connected to the depth limiting wheel 15. The depth limiting wheel 15 limits the depth into the soil by its own height. Bolts 14 are threaded onto the left side of the outer wall of each of the two sliding sleeves 12. The right end of each bolt 14 passes through the left side of the corresponding sliding sleeve 12 and is threaded onto the left side of the sliding rod 13. The bolts 14 lock the relative position of the sliding rod 13 and the sliding sleeve 12 through the threads, fixing the height of the depth limiting wheel 15. A rotary tillage shaft 16 is rotatably connected to the bottom left side of the inner wall of the frame 1. The rotary tillage shaft 16 rotates at high speed during operation, chopping... The surface straw and compacted soil are used to loosen the seedbed for subsequent furrowing and sowing. The front ends of both discharge shafts 6 are connected to a support frame and a sprocket 17. The two sprockets 17 are connected by a chain 18. The sprockets 17 and chain 21 transmit power from the right discharge shaft 6 to the left discharge shaft 6, ensuring synchronous seed and fertilizer discharge from both sides of the dischargers 7. A connecting rod 19 is fixedly connected to the left side of the front rotating plate 29. The connecting rod 19 transmits power from the covering wheel 304 to the discharge shaft 6. Sprockets 20 are fixedly connected to the outer wall of both the right discharge shaft 6 and the connecting rod 19. The two sprockets 20 are connected by a chain 18. Chain 21 is used for transmission connection. Through sprocket 20 and chain 21, the power of connecting rod 19 is transmitted to the right discharge shaft 6, realizing the synchronous operation of soil covering wheel 304 and discharge device 7. Sprocket 32 ​​is fixedly connected to one side of the outer wall of connecting rod 19 and connecting shaft 301. The two sprocket 32 ​​are connected by chain 33. Through sprocket 322 and chain 33, the power of connecting shaft 301 and soil covering wheel 304 is transmitted to connecting rod 19, providing the source for subsequent power transmission. Multiple protective covers 30 are set on the front side of frame 1. The protective covers 30 prevent straw and weeds from getting caught in the transmission mechanism during operation and causing jamming. Specifically, the front storage box 5 is used to store fertilizer. The guide plate 11 is tilted to receive the fertilizer falling from the front discharge device 7 and guide it to disperse and fall onto the ground along the guide plate 11. By loosening the bolt 14 on the sliding sleeve 12, the sliding rod 13 can slide up and down along the sliding sleeve 12, driving the depth limiting wheel 15 to rise and fall synchronously. After adjusting to the target height, tighten the bolt 14. The bolt 14 locks the position of the sliding rod 13 through the thread, so that the depth limiting wheel 15 controls the soil depth of the device and avoids fluctuations in the sowing depth due to changes in soil hardness. At the same time, when the device is started, the rotary tillage shaft 16 rotates and turns the soil through the outer blades, making the soil soft and easy for the furrow opener to dig planting furrows. The fertilizer dispersed by the guide plate 11 is buried underground with the soil, which is convenient for fertilization. When the covering wheel 304 rotates, it drives the connecting shaft through the rotating shaft 303. Rotation of 301 connects the connecting shaft 301 to the connecting rod 19 via sprocket 322 and chain 323, causing the power of the covering wheel 304 to be synchronously transmitted to the connecting rod 19. Then, the power of the covering wheel 304 is transmitted to the right discharge shaft 6 via sprocket 20 on one side of the connecting rod 19 and sprocket 20 on the right discharge shaft 6 via chain 21. Subsequently, the power of the covering wheel 304 is transmitted to the right discharge shaft 6 via sprocket 17 at the front end of the right discharge shaft 6 and sprocket 17 at the front end of the left discharge shaft 6 via chain 18, ensuring that the left and right discharge shafts 6 rotate synchronously. This allows the covering wheel 304 to rotate synchronously, driving the two discharge shafts 6 to rotate synchronously, discharging material while moving, thus controlling the sowing distance and simultaneously sowing and fertilizing. The protective cover 30 on the front side of the frame 1 covers the transmission components to prevent straw and weeds from getting caught in the transmission mechanism and causing jamming during operation.

[0021] Working principle: Before operation, when adjusting the sowing spacing according to the crop type, pull the positioning pin 203 to the right. The positioning pin 203 drives the limiting plate 204 to compress the spring 205, causing the left end of the positioning pin 203 to disengage from the corresponding positioning hole 207 on the limiting plate 206. At this time, the slider 201 is released from its fixed position and can slide laterally along the slide groove 4 at the bottom of the frame 1. According to the target row spacing, move the slider 201 to the position of the corresponding spacing positioning hole 207 on the limiting plate 206. Release the positioning pin 203, and the spring 205, under the action of the reset elastic force, pushes the limiting plate 204 to the left, causing the positioning pin 203 to re-engage into the new position. The positioning hole 207 completes the spacing positioning of a single slider 201, and the lateral spacing of all sliders 201 is adjusted synchronously. This drives the floating disc furrow opener 208 at the bottom of the slider 201 and the seed discharge tube 209 on the right side of the inner wall to move synchronously, so as to achieve rapid adaptation of the sowing spacing. After the spacing is adjusted, the seeds in the storage box 5 fall through the feeder 7. When the feed shaft 6 in the upper part of the frame 1 rotates, it drives the feeder 7 to precisely control the amount. The seeds are transported through the seed discharge tube 209. The rear feeder 7 is connected to the corresponding seed discharge tube 209 through the hose 8 to ensure that the seeds fall stably into the seed furrow opened by the floating disc furrow opener 208. Furthermore, when different spacing seeding requires replacement of the appropriate covering wheel 304 or maintenance of the covering wheel 304, by unscrewing the bolts 305 at the top of the two threaded sleeves 302, the bolts 305 disengage from the threaded connection with the rotating shaft 303, releasing the fixing of the threaded sleeves 302 to the rotating shaft 303. Then, rotating the threaded sleeves 302 on both sides, because the threaded sleeves 302 are threadedly connected to the connecting shaft 301, and the connecting shaft 301 is adapted to the rotation of the rotating plate 29, the threaded sleeves 302 will move away from the rotating shaft 303 along the axial direction of the connecting shaft 301, completely disengaging the threaded sleeves 302 on both sides. After removing the two ends of the rotating shaft 303, the rotating shaft 303 and the covering wheel 304 can be removed, completing the disassembly. When installing the new covering wheel 304, align the two ends of the rotating shaft 303 of the new covering wheel 304 with the two connecting shafts 301 on both sides, and rotate the threaded sleeve 302 in the opposite direction so that it is axially fitted into the rotating shaft 303 along the connecting shaft 301. After the threaded sleeve 302 and the rotating shaft 303 are in contact, screw in the bolt 305 through the threaded sleeve 302 and threadedly connect it to the top of the rotating shaft 303. Fix the rotating shaft 303 and the threaded sleeve 302 with the bolt 305 to achieve quick assembly of the covering wheel 304.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-crop precision seeder, comprising a frame (1), chain one (18), chain two (21) and chain three (23), characterized in that: The inner wall of the frame (1) has a sliding groove (4) on the right side of the bottom. An adjustment mechanism (2) is provided inside the sliding groove (4). The adjustment mechanism (2) is used to adjust the sowing spacing. The front and rear ends of the right side of the frame (1) are rotatably connected to rotating plates (29). An installation mechanism (3) is provided between the two adjacent rotating plates (29). The installation mechanism (3) is used to quickly install the soil covering component. The adjustment mechanism (2) includes multiple sliders (201), the outer walls of which are slidably connected to the inner wall of the slide groove (4). A fixing plate (202) is fixedly connected to the top center of each slider (201). A positioning pin (203) is slidably connected inside each fixing plate (202). A limiting piece (204) is fixedly connected to the left side of the outer wall of each positioning pin (203). The limiting pieces (204) are connected to the corresponding fixing plates (202). Springs (205) are fixedly connected between adjacent parts. A limiting plate (206) is fixedly connected to the bottom of the inner wall of the frame (1). Multiple positioning holes (207) are opened on the right side of the limiting plate (206). The outer walls of multiple positioning pins (203) are slidably connected to the inner walls of the corresponding positioning holes (207). A floating disc furrow opener (208) is fixedly connected to the bottom left side of the slider (201). A seeding pipe (209) is fixedly connected to the inner side of the slider (201).

2. The multi-crop precision seeder according to claim 1, characterized in that: The installation mechanism (3) includes two connecting shafts (301). The two connecting shafts (301) are rotatably connected to one side of the corresponding rotating plate (29) on opposite sides. The front end of the front connecting shaft (301) passes through the corresponding rotating plate (29). The outer walls of the two connecting shafts (301) are threaded with threaded sleeves (302) on adjacent sides. A rotating shaft (303) is provided between the adjacent threaded sleeves (302). A soil covering wheel (304) is fixedly connected to the outer wall of the rotating shaft (303). The top of the outer walls of the two threaded sleeves (302) are threaded with bolts (305). The bottom of the two bolts (305) passes through the top of the outer wall of the corresponding threaded sleeve (302) and is threaded to the left and right sides of the top of the outer wall of the rotating shaft (303) respectively.

3. A multi-crop precision seeder according to claim 1, characterized in that: The inner wall of the frame (1) is fixedly connected to the top left and right sides of the storage box (5). The bottom of the outer wall of the two storage boxes (5) is connected to multiple feeders (7). The upper middle left and right sides of the inner wall of the frame (1) are rotatably connected to the feed shaft (6). The outer walls of the two feed shafts (6) are rotatably connected to the inner side of the corresponding feeder (7). The bottom of the multiple feeders (7) on the rear side is fixedly connected to the hose (8).

4. A multi-crop precision seeder according to claim 1, characterized in that: A fixing rod (9) is fixedly connected to the left side of the middle part of the inner wall of the frame (1), and a support rod (10) is fixedly connected to the left side of the bottom of the inner wall of the frame (1). Multiple guide plates (11) are fixedly connected to the top of the fixing rod (9) and the support rod (10). The positions of the multiple guide plates (11) correspond to the positions of the corresponding dischargers (7).

5. A multi-crop precision seeder according to claim 1, characterized in that: Sliding sleeves (12) are fixedly connected to the front and rear sides of the left side of the frame (1). Sliding rods (13) are slidably connected inside the two sliding sleeves (12). The bottom of the two sliding rods (13) on opposite sides is rotatably connected to a limited depth wheel (15). Bolts (14) are threadedly connected to the left side of the outer wall of the two sliding sleeves (12). The right end of the two bolts (14) passes through the left side of the corresponding sliding sleeve (12) and is threadedly connected to the left side of the sliding rod (13). A rotary tillage shaft (16) is rotatably connected to the bottom left side of the inner wall of the frame (1).

6. A multi-crop precision seeder according to claim 3, characterized in that: The front ends of the two discharge shafts (6) are connected to the bracket and sprockets (17). The two sprockets (17) are connected by transmission through the sprockets (17). The left side of the front end of the rotating plate (29) is connected to the connecting rod (19). The right side of the discharge shaft (6) and the outer wall of the connecting rod (19) are both connected to the sprockets (20). The two sprockets (20) are connected by transmission through the chain (21). The connecting rod (19) and the outer wall of the connecting shaft (301) are both connected to the sprockets (22). The two sprockets (22) are connected by transmission through the chain (23). The front side of the frame (1) is provided with multiple protective covers (30).

7. A multi-crop precision seeder according to claim 1, characterized in that: The frame (1) is fixedly connected to the front and rear sides of the right end with support plates (24). The top right side of the two support plates (24) is threaded with adjusting studs (25). The top adjacent sides of the two rotating plates (29) are fixedly connected with rotating blocks (26). The bottom ends of the two adjusting studs (25) penetrate the top of the corresponding support plates (24) and are rotatably connected to the top of the corresponding rotating blocks (26).

8. A multi-crop precision seeder according to claim 1, characterized in that: The two rotating plates (29) are fixedly connected to the same mounting bracket (27) on their right sides, and multiple scraping blades (28) are fixedly connected to the inner side of the mounting bracket (27).

Images