Full-automatic cotton seeder used in hilly and mountainous areas

By combining negative pressure adsorption and magnetic attraction, the problems of seed damage and uneven plant spacing in cotton sowing equipment have been solved, achieving an efficient and stable cotton sowing process, improving seedling quality and overall planting efficiency.

CN121942385APending Publication Date: 2026-05-01九江市农业科学院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
九江市农业科学院
Filing Date
2025-12-26
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing cotton planting equipment is prone to causing damage to the seed coat and internal embryo during the planting process, and incomplete screening leads to uneven plant spacing, affecting cotton growth and management costs.

Method used

The cotton seeds are picked up and transported using a negative pressure adsorption method. The seeds are fixed through negative pressure holes to avoid mechanical squeezing. Combined with magnetic attraction, the sowing spacing is adjusted to ensure single seed transport and uniform sowing.

Benefits of technology

It improved the germination rate and seedling quality of cotton seeds, reduced the phenomenon of missing seedlings and overlapping seedlings, reduced labor intensity, and improved the stability and efficiency of sowing.

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Abstract

The invention discloses a full-automatic cotton seeder used in hilly and mountainous areas, and relates to the technical field of agricultural power machinery. The device comprises a seeding assembly and a grooving assembly. The seeding assembly adopts a negative pressure seed distribution mode, cotton seeds are adsorbed through negative pressure holes in a seed distribution disc, and fixed-point release is realized at a seeding scraping pipe; by arranging the adjusting disc and the shielding sheet which can rotate relatively and combining the magnetic attraction coupling and friction limiting structure, the number of the negative pressure holes can be effectively adjusted, so that the seeding spacing is changed. The grooving assembly comprises a soil digging blade, a soil collecting sliding groove plate and a soil covering sliding groove plate, grooving, soil collecting and soil covering operation can be completed, and a vibrator is arranged below a sliding groove to improve the soil mobility. The whole machine realizes height synchronous adjustment through an electric cylinder, and ensures consistent seeding depth.
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Description

A fully automatic cotton planter for use in hilly and mountainous areas Technical Field

[0001] This invention relates to the field of agricultural power machinery technology, specifically a fully automatic cotton planter for use in hilly and mountainous areas. Background Technology

[0002] As an important economic crop, cotton's sowing quality directly affects seedling emergence rate, plant spacing uniformity, and subsequent field management effectiveness. In cotton cultivation, the sowing stage is a crucial factor determining individual plant growth space, root development conditions, and nutrient utilization efficiency. Uneven sowing or damaged seeds can easily lead to missing, weak, or unevenly distributed seedlings, thus impacting the overall yield and management costs of the entire cotton field.

[0003] Most existing cotton planting equipment uses a mechanical seed metering structure, typically employing gears, finger picks, rollers, or sieves to separate and sow cotton seeds. In practice, this type of mechanical seed metering requires applying a certain amount of squeezing or shearing force to the cotton seeds to achieve separation and transport. However, due to the irregular shape of cotton seeds, their fibrous surface, and limited resistance to compression, they are easily subjected to mechanical squeezing, friction, or jamming during the sorting and transport process. This can lead to damage to the seed coat and the internal embryo, reducing germination rate and seedling quality.

[0004] In actual sowing, incomplete sieving can easily occur, causing two or more cotton seeds to pass through the seed discharge channel simultaneously and fall into the same planting spot, resulting in uneven plant spacing and localized overplanting. These problems not only affect the normal growth of cotton but also increase the workload of later manual thinning and management, making it difficult to meet the requirements of modern cotton cultivation for precision sowing and high uniformity. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a fully automatic cotton planter for use in hilly and mountainous areas, comprising a planting component and a grooving component, wherein the planting component includes a seeding disc, the seeding disc having multiple negative pressure holes evenly distributed along its circumferential edge, the seeding disc being rotatably mounted inside an upper seeding chamber, a limiting friction ring being rotatably mounted on the inner wall of the upper seeding chamber, an adjusting disc being fixedly mounted on the inner side of the limiting friction ring, and multiple blocking plates being evenly fixedly mounted on the circumferential surface of the adjusting disc, wherein the number of blocking plates is half the number of negative pressure holes; a rotating shaft support is also fixedly mounted on the inner wall of the upper seeding chamber, wherein the limiting friction ring is disposed between the rotating shaft support and the seeding disc, and the rotating shaft support... A rotating shaft is rotatably mounted at the central axis of the frame, and the rotating shaft rotates through the adjusting plate and is fixedly engaged with the seeding plate. The trenching assembly includes a reinforcing ring and a side support plate, wherein multiple digging blades are evenly fixedly mounted on the circumference between the opposite surfaces of the reinforcing ring and the side support plate. The trenching assembly is used to dig grooves in the ground for planting cotton seeds. The sowing assembly also includes a seed scraper, which slides in contact with the side of the seeding plate away from the rotating shaft support. The top of the seed scraper is inclined, and the seed scraper is used to scrape the cotton seeds adsorbed at the negative pressure holes on the seeding plate into the seed scraper, and finally fall through the bottom of the seed scraper into the grooves dug in the ground by the trenching assembly.

[0006] Preferably, the shielding plate is aligned with the negative pressure hole to shield it; an active magnetic suction plate and a passive magnetic suction plate pusher are fixedly mounted on the rotating shaft, wherein a passive magnetic suction plate is disposed between the active magnetic suction plate and the passive magnetic suction plate pusher, and the passive magnetic suction plate is fixedly mounted on the adjusting plate; wherein the active magnetic suction plate and the passive magnetic suction plate are magnetically attracted to each other. For example, if there are 72 negative pressure holes and 36 shielding plates, the range of motion of the passive magnetic suction plate between the active magnetic suction plate and the passive magnetic suction plate pusher should be five degrees.

[0007] Preferably, a groove is provided in the radial position of the upper seed cavity, the groove is aligned with the position of the limiting friction ring, and an electromagnet is slidably arranged in the groove. The electromagnet and the limiting friction ring are magnetically attracted to each other, and the contact surface between the electromagnet and the limiting friction ring is a sliding friction mating surface.

[0008] Preferably, the rotating shaft is also rotatably fitted with the negative pressure chamber, wherein a seeding motor and a negative pressure pump are fixedly installed on the negative pressure chamber, wherein the output shaft of the seeding motor passes through the negative pressure chamber and is fixedly fitted with the rotating shaft, and the air inlet of the negative pressure pump is connected to the inside of the negative pressure chamber to generate negative pressure inside the negative pressure chamber.

[0009] Preferably, an upper seeding pipe is fixedly connected to the side of the upper seeding chamber, and a seed storage tank is fixed to the top of the upper seeding pipe; a lower seeding scraper is fixedly installed through the upper seeding chamber; an air inlet is provided at the top of the upper seeding chamber to balance the pressure difference inside and outside the upper seeding chamber. The seed storage tank is suspended and fixed on the supporting top plate.

[0010] Preferably, the trenching assembly further includes a soil collection chute plate disposed on the side support plate and the inner side of the reinforcing ring. A soil covering chute plate is fixedly connected to the soil collection chute plate. The soil covering chute plate and the soil collection chute plate together form an inclined slide. The height of one end of the slide is higher than that of the other end. Multiple vibrators are uniformly fixedly installed on the lower surface of the soil covering chute plate and the soil collection chute plate.

[0011] Preferably, the soil-covering chute plate is fixedly installed on the extension platform by multiple spring steel drop bars (it should be noted that the spring steel drop bars have a certain degree of elasticity). The extension platform is fixedly installed on the main frame, and an L-shaped bracket is fixedly installed on the main frame. A soil-digging motor is fixedly installed on the L-shaped bracket. The side support plate is rotatably installed on the L-shaped bracket and is also fixedly installed on the output shaft of the soil-digging motor.

[0012] Preferably, the end of the soil-covered chute plate away from the side support plate is fixedly installed on the main frame by an inclined tie rod. The four corners of the main frame are respectively fixedly installed at the ends of the telescopic rods of four electric cylinders, and the telescopic cylinders of the four electric cylinders are all fixed to the support top plate. Drive wheel set brackets are fixedly installed at the four corners of the support top plate, and drive wheel sets are rotatably installed on the four drive wheel set brackets.

[0013] Compared with the prior art, the present invention has the following advantages: (1) The present invention uses negative pressure adsorption to pick up and transport cotton seeds, avoiding the direct mechanical action on the seeds caused by squeezing, pushing or forced sieving in the traditional mechanical seed metering structure. The cotton seeds are fixed on the surface of the seeding disc only by the adsorption force generated by the negative pressure hole. During the rotation, they do not need to be subjected to additional clamping or squeezing. From the structural principle, this reduces the damage to the seed coat and internal embryo, which is conducive to improving the germination rate and seedling quality of cotton seeds; (2) The diameter of the negative pressure hole of the present invention is smaller than the size of the cotton seed. Therefore, the negative pressure hole can only adsorb one cotton seed, avoiding the probability of two cotton seeds falling into the same planting point at the same time, and improving the consistency of the sowing spacing; (3) The negative pressure adsorption method of the present invention is highly adaptable to changes in the size and shape of cotton seeds. Even if there are certain differences in seed size, a single seed can be stably adsorbed through the negative pressure hole, without relying on strict mechanical sieving size. This method effectively avoids the problem of sieving failure caused by inconsistent seed specifications in existing mechanical seeding, making the sowing process more stable and reliable; (4) Since the present invention can effectively avoid seed damage and multiple seed re-sowing during the sowing process, the plant spacing of cotton is more uniform in the seedling stage, thereby reducing the need for manual seedling replenishment or thinning due to missing seedlings or heavy seedlings in the later stage, reducing labor intensity and improving overall planting efficiency. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 is a schematic diagram of the soil-covered chute structure of the present invention.

[0016] Figure 3 is a schematic diagram of the installation position of the vibrator of the present invention.

[0017] Figure 4 is a schematic diagram of the installation arrangement of the cutting blade of the present invention.

[0018] Figure 5 is a schematic diagram of the upper seed cavity structure of the present invention.

[0019] Figure 6 is a schematic diagram of the scraper structure of the present invention.

[0020] Figure 7 is a schematic diagram of the structure of the soil collection chute plate of the present invention.

[0021] Figure 8 is a schematic diagram of the adjustment disc structure of the present invention.

[0022] Figure 9 is a schematic diagram of the structure at point A in Figure 8 of this invention.

[0023] Figure 10 is a schematic diagram of the structure at point B in Figure 8 of this invention.

[0024] Figure 11 is a schematic diagram of the seeding disc structure of the present invention.

[0025] In the diagram: 101-Seed chamber; 102-Seed scraper; 103-Seed tray; 104-Electromagnet; 105-Negative pressure chamber; 106-Negative pressure pump; 107-Shaft support; 108-Friction limiting ring; 109-Shaft; 110-Adjusting disc; 111-Shielding plate; 112-Negative pressure hole; 113-Active magnetic suction plate; 114-Passive magnetic suction plate; 115-Passive magnetic suction plate push plate; 116-Seed loading pipe; 117-Seed storage tank; 118-Sowing 119 - Air inlet hole; 201 - Reinforcing ring; 202 - Side support plate; 203 - Soil cutting blade; 204 - Soil cutting motor; 205 - L-shaped bracket; 206 - Soil covering chute; 207 - Soil collecting chute; 208 - Spring steel drop bar; 209 - Extension platform; 210 - Inclined tie rod; 211 - Vibrator; 212 - Main frame; 213 - Electric cylinder; 214 - Drive wheel set; 215 - Drive wheel set bracket; 216 - Support top plate. Detailed Implementation

[0026] The technical solution of the present invention will be further described below with reference to Figures 1-11 and through specific embodiments.

[0027] This invention provides a fully automatic cotton planter for use in hilly and mountainous areas, comprising a planting component and a furrowing component. The planting component includes a seeding disc 103, on which a plurality of negative pressure holes 112 are evenly distributed around its circumference. The seeding disc 103 is rotatably mounted inside an upper seeding chamber 101. A limiting friction ring 108 is also rotatably mounted on the inner wall of the upper seeding chamber 101. An adjusting disc 110 is fixedly mounted on the inner side of the limiting friction ring 108. A plurality of blocking plates 111 are evenly fixedly mounted on the circumferential surface of the adjusting disc 110, wherein the number of blocking plates 111 is half the number of negative pressure holes 112. A rotating shaft bracket 107 is also fixedly mounted on the inner wall of the upper seeding chamber 101. The limiting friction ring 108 is disposed between the rotating shaft bracket 107 and the seeding disc 103. The rotating shaft bracket 107 is rotatably mounted at its axial center. The device includes a rotating shaft 109 that rotates through an adjusting disc 110 and is fixedly engaged with a seeding disc 103. The trenching assembly includes a reinforcing ring 201 and a side support disc 202, wherein multiple digging blades 203 are evenly fixedly installed at the circumferential position between the opposing surfaces of the reinforcing ring 201 and the side support disc 202. The trenching assembly is used to dig trenches in the ground for planting cotton seeds. The seeding assembly also includes a seed-laying scraper 102, which slides in contact with the side of the seeding disc 103 away from the rotating shaft support 107. The top end of the seed-laying scraper 102 is inclined, and it scrapes the cotton seeds adsorbed at the negative pressure holes 112 on the seeding disc 103 into the seed-laying scraper 102, and finally, the seeds fall through the bottom end of the seed-laying scraper 102 into the trenches dug in the ground by the trenching assembly.

[0028] The shielding plate 111 is aligned with the negative pressure hole 112 to shield the negative pressure hole 112. An active magnetic suction plate 113 and a passive magnetic suction plate pusher plate 115 are fixedly mounted on the rotating shaft 109. A passive magnetic suction plate 114 is positioned between the active magnetic suction plate 113 and the passive magnetic suction plate pusher plate 115, and the passive magnetic suction plate 114 is fixedly mounted on the adjusting plate 110. The active magnetic suction plate 113 and the passive magnetic suction plate 114 are magnetically attracted to each other. For example, there are 72 negative pressure holes 112 and 36 shielding plates 111. The range of motion of the passive magnetic suction plate 114 between the active magnetic suction plate 113 and the passive magnetic suction plate pusher plate 115 should be five degrees. A groove is provided radially in the upper seeding chamber 101, which is aligned with the location of the limiting friction ring 108. An electromagnet 104 is slidably disposed in the groove, and the electromagnet 104 is magnetically attracted to the limiting friction ring 108. The contact surface between the electromagnet 104 and the limiting friction ring 108 is a sliding friction mating surface. The rotating shaft 109 is also rotatably engaged with the negative pressure chamber 105, on which a seeding motor 118 and a negative pressure pump 106 are fixedly mounted. The output shaft of the seeding motor 118 passes through the negative pressure chamber 105 and is fixedly engaged with the rotating shaft 109. The air inlet of the negative pressure pump 106 communicates with the inside of the negative pressure chamber 105 to generate negative pressure inside the negative pressure chamber 105. An upper seeding chamber 101 is fixedly connected to an upper seeding pipe 116 on its side, and a seed storage tank 117 is fixedly attached to the top of the upper seeding pipe 116. A lower seeding scraper 102 is fixedly attached to the upper seeding chamber 101. An air inlet 119 is provided at the top of the upper seeding chamber 101 to balance the pressure difference inside and outside the upper seeding chamber 101. The seed storage tank 117 is fixedly mounted on a supporting top plate 216.

[0029] The trenching assembly also includes a soil collection chute 207 disposed inside the side support plate 202 and the reinforcing ring 201. A soil covering chute 206 is fixedly connected to the soil collection chute 207. The soil covering chute 206 and the soil collection chute 207 together form an inclined slide. The height of one end of the slide is higher than that of the other end. Multiple vibrators 211 are evenly fixedly installed on the lower surfaces of the soil covering chute 206 and the soil collection chute 207. The soil-covering chute plate 206 is fixedly installed on the extension platform 209 by multiple spring steel drop rods 208 (it should be noted that the spring steel drop rods 208 have a certain degree of elasticity). The extension platform 209 is fixedly installed on the main frame 212. An L-shaped bracket 205 is fixedly installed on the main frame 212. A soil-digging motor 204 is fixedly installed on the L-shaped bracket 205. The side support plate 202 is rotatably installed on the L-shaped bracket 205. The side support plate 202 is also fixedly installed on the output shaft of the soil-digging motor 204. The end of the soil-covered chute plate 206 away from the side support plate 202 is fixedly installed on the main frame 212 by an inclined tie rod 210. The four corners of the main frame 212 are respectively fixedly installed on the ends of the telescopic rods of four electric cylinders 213, and the telescopic cylinders of the four electric cylinders 213 are all fixed on the support top plate 216. The four corners of the support top plate 216 are all fixedly installed with drive wheel set brackets 215, and drive wheel sets 214 are rotatably installed on the four drive wheel set brackets 215.

[0030] Cotton seeds are poured into the seed storage tank 117 and guided into the seed chamber 101 through the seeding pipe 116. Not too many seeds should be poured in at a time; the height of the seeds inside the seed chamber 101 should not exceed the height of the seed scraper 102. Therefore, the bottom of the seed chamber 101 should be lower than the top of the seed scraper 102. During use, the negative pressure pump 106 and the seeding motor 118 are started. The output shaft of the seeding motor 118 drives the rotating shaft 109 to rotate. Simultaneously, the active magnetic suction plate 113 on the rotating shaft 109, along with the magnetic force, drives the passive magnetic suction plate 114 to rotate as well. The passive magnetic suction plate 114 then drives the adjusting disc 110 to rotate as well. At this time, the blocking plate 111 on the adjusting disc 110 and the negative pressure hole 112 on the seeding disc 103 will rotate synchronously. It should be noted that when the active magnetic suction plate 113 and the passive magnetic suction plate 114 are in contact, the blocking plate 111 will not block the negative pressure hole 112; the blocking plate 111 will be positioned between the two negative pressure holes 112. The diameter of the negative pressure hole 112 should be smaller than the size of the cotton seed. When the negative pressure pump 106 is activated, it creates negative pressure inside the negative pressure chamber 105. The upper seed chamber 101 and the negative pressure chamber 105 are connected through multiple negative pressure holes 112. Therefore, the seeds inside the upper seed chamber 101 are attracted to the negative pressure holes 112 and then rotate with the seeding disc 103, while air enters through the air inlet hole 119. When the cotton seeds on the seeding disc 103 move to the lower seed scraper 102, they are scraped off by the lower seed scraper 102. This process causes the cotton seeds attracted to the negative pressure holes 112 to fall into the lower seed scraper 102 and then be guided by the lower seed scraper 102 to fall to the ground.

[0031] Start the soil-digging motor 204 and drive wheel set 214. The drive wheel set 214 is used to drive the entire device to travel on the ground (the four drive wheel sets 214 are wheel-side motors that can rotate independently, which can provide greater driving force and make it easier to travel in hilly and mountainous areas through four-wheel drive). The soil-digging motor 204 drives the reinforcing ring 201, the side support plate 202 and all the soil-digging blades 203 to rotate. The rotation of the soil-digging blades 203 will dig up the soil on the ground, creating a groove in the ground. The excavated soil rotates with the cutting blade 203 to above the soil collection chute 207, and then falls onto the chute 207 under gravity. Guided by the chute 207, the soil is then transported to the end of the device to cover cotton seeds falling from the seeding scraper 102. This process requires the vibration device 211 to be activated, which generates vibration to improve the fluidity of the soil on the covering chute 206 and the soil collection chute 207. The extension and retraction of the four electric cylinders 213 are synchronously controlled to control the distance between the cutting blade 203 and the ground, i.e., the excavation depth. Because the cutting blade 203, L-shaped bracket 205, and main frame 212 are all fixed, they move synchronously up and down.

[0032] The planting interval can be adjusted according to the cotton planting interval. Specifically, by activating electromagnet 104, the electromagnet 104 generates magnetic force, causing it to contact and attract the limiting friction ring 108. At this time, the electromagnet 104 and the limiting friction ring 108 generate pressure, and the electromagnet 104 restricts the rotation of the limiting friction ring 108. The resistance to the limiting friction ring 108 causes the rotation of the adjusting disc 110 to be obstructed. The magnitude of this resistance should be set enough to separate the passive magnetic attracting plate 114 and the active magnetic attracting plate 113. At this time, the active magnetic attracting plate 113 can no longer drive the passive magnetic attracting plate 114 to rotate. 3. First, rotate. Since the active magnetic suction plate 113 and the passive magnetic suction plate pusher 115 rotate together, the passive magnetic suction plate pusher 115 will push the passive magnetic suction plate 114 to continue rotating with the rotating shaft 109. However, since the passive magnetic suction plate 114 and the rotating shaft 109 rotate relative to each other, the adjusting plate 110 and the seeding plate 103 will rotate relative to each other (within a range of five degrees). This will eventually cause the blocking plate 111 to block half of the negative pressure holes 112, resulting in a reduction in the number of negative pressure holes 112 that can be ventilated. At the same time, the distance between two adjacent negative pressure holes 112 that can be ventilated will increase, and the spacing of cotton sowing will increase.

Claims

1. A fully automatic cotton planter for use in hilly and mountainous areas, characterized in that: The device includes a seeding assembly and a trenching assembly. The seeding assembly includes a seeding disc (103), on which multiple negative pressure holes (112) are evenly distributed around its circumference. The seeding disc (103) is rotatably mounted inside an upper seeding chamber (101). A limiting friction ring (108) is also rotatably mounted on the inner wall of the upper seeding chamber (101). An adjusting disc (110) is fixedly mounted on the inner side of the limiting friction ring (108). Multiple shielding plates (111) are evenly fixedly mounted on the circumference of the adjusting disc (110), wherein the number of shielding plates (111) is half the number of negative pressure holes (112). A rotating shaft bracket (107) is also fixedly mounted on the inner wall of the upper seeding chamber (101). The limiting friction ring (108) is located between the rotating shaft bracket (107) and the seeding disc (103). A rotating shaft (109) is rotatably mounted at the axial center of the rotating shaft bracket (107). (109) The rotating through-adjustment plate (110) is fixedly engaged with the seeding plate (103); the trenching assembly includes a reinforcing ring (201) and a side support plate (202), wherein multiple soil-digging blades (203) are uniformly fixedly installed on the circumferential position between the opposite surfaces of the reinforcing ring (201) and the side support plate (202); the trenching assembly is used to dig a groove in the ground for planting cotton seeds; the seeding assembly also includes a seed-laying scraper (102), which slides in contact with the side of the seeding plate (103) away from the rotating shaft support (107); the top part of the seed-laying scraper (102) is inclined, and the seed-laying scraper (102) is used to scrape the cotton seeds adsorbed by the negative pressure hole (112) on the seeding plate (103) into the seed-laying scraper (102), and finally fall into the groove opened in the ground by the trenching assembly through the bottom end of the seed-laying scraper (102).

2. The fully automatic cotton planter for use in hilly and mountainous areas according to claim 1, characterized in that: The shielding plate (111) can be aligned with the negative pressure hole (112) to shield the negative pressure hole (112); an active magnetic suction plate (113) and a passive magnetic suction plate pusher plate (115) are fixedly installed on the rotating shaft (109), wherein a passive magnetic suction plate (114) is provided between the active magnetic suction plate (113) and the passive magnetic suction plate pusher plate (115), and the passive magnetic suction plate (114) is fixedly installed on the adjusting plate (110); wherein the active magnetic suction plate (113) and the passive magnetic suction plate (114) are magnetically attracted together. For example, the number of negative pressure holes (112) is 72, the number of shielding plates (111) is 36, and the range of motion of the passive magnetic suction plate (114) between the active magnetic suction plate (113) and the passive magnetic suction plate pusher plate (115) should be five degrees.

3. The fully automatic cotton planter for use in hilly and mountainous areas according to claim 2, characterized in that: A groove is provided in the radial position of the upper cavity (101). The groove is aligned with the position of the limiting friction ring (108). An electromagnet (104) is slidably arranged in the groove. The electromagnet (104) and the limiting friction ring (108) are magnetically attracted to each other. The contact surface between the electromagnet (104) and the limiting friction ring (108) is a sliding friction mating surface.

4. The fully automatic cotton planter for use in hilly and mountainous areas according to claim 3, characterized in that: The rotating shaft (109) is also rotatably engaged with the negative pressure chamber (105), on which a seeding motor (118) and a negative pressure pump (106) are fixedly installed. The output shaft of the seeding motor (118) passes through the negative pressure chamber (105) and is fixedly engaged with the rotating shaft (109). The air inlet of the negative pressure pump (106) is connected to the inside of the negative pressure chamber (105) to generate negative pressure inside the negative pressure chamber (105).

5. The fully automatic cotton planter for use in hilly and mountainous areas according to claim 4, characterized in that: The upper seed chamber (101) is fixedly connected to the side of the upper seed pipe (116), and the upper seed pipe (116) is fixedly connected to the top of the seed storage tank (117); the lower seed scraper (102) is fixedly connected to the upper seed chamber (101); the upper seed chamber (101) is provided with an air inlet hole (119) at the top to balance the pressure difference inside and outside the upper seed chamber (101).

6. The fully automatic cotton planter for use in hilly and mountainous areas according to claim 5, characterized in that: The trenching assembly also includes a soil collection chute plate (207) set inside the side support plate (202) and the reinforcing ring (201). A soil covering chute plate (206) is fixedly connected to the soil collection chute plate (207). The soil covering chute plate (206) and the soil collection chute plate (207) together form an inclined slide. The height of one end of the slide is higher than that of the other end. Multiple vibrators (211) are evenly fixedly installed on the lower surface of the soil covering chute plate (206) and the soil collection chute plate (207).

7. The fully automatic cotton planter for use in hilly and mountainous areas according to claim 6, characterized in that: The soil-covering chute plate (206) is fixedly installed on the extension platform (209) by multiple spring steel drop bars (208). The extension platform (209) is fixedly installed on the main frame (212). An L-shaped bracket (205) is fixedly installed on the main frame (212). A soil-scraping motor (204) is fixedly installed on the L-shaped bracket (205). A side support plate (202) is rotatably installed on the L-shaped bracket (205). The side support plate (202) is also fixedly installed on the output shaft of the soil-scraping motor (204).

8. A fully automatic cotton planter for use in hilly and mountainous areas according to claim 7, characterized in that: The end of the soil-covered chute plate (206) away from the side support plate (202) is fixedly installed on the main frame (212) by an inclined tie rod (210). The four corners of the main frame (212) are respectively fixedly installed on the ends of the telescopic rods of four electric cylinders (213), and the telescopic cylinders of the four electric cylinders (213) are all fixed on the support top plate (216). The four corners of the support top plate (216) are all fixedly installed with drive wheel set brackets (215), and drive wheel sets (214) are rotatably installed on the four drive wheel set brackets (215).