Electrically-driven finger clamping type seed-metering device capable of meeting precise corn seeding

Abstract

The invention discloses an electrically-driven finger-clamping type seed-metering device capable of meeting precise corn seeding, and belongs to the technical field of agricultural seeding. The two sides of the seed guide device are each provided with a shell, each shell is internally provided with an installation space used for installing a finger chuck, the side, away from the seed guide device, of each shell is connected with a seed box, the finger chucks are used for conveying seeds entering the shells from the seed boxes into the seed guide device, and the seeds are discharged and sown through the seed guide device; the seed metering device further comprises a seed metering shaft, one end of the seed metering shaft is connected with the output end of the motor through a speed reducer, the other end of the seed metering shaft penetrates through the seed box close to the seed metering shaft and extends to sequentially penetrate through the finger clamping plate close to one side of the seed metering shaft, the seed guide device and the other finger clamping plate, and the planet carrier and the two finger clamping plates are fixedly connected with the seed metering shaft. And the synchronous rotation is realized under the driving of the seeding shaft. The seed-metering device is simple in structure and high in automation degree, the rotating speed of the seed guide belt is increased through the planetary gear train, and the seeding speed of the finger clamping type seed-metering device is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural sowing, and in particular to an electrically driven finger-clamp type seed metering device capable of precisely sowing corn. Background Art

[0002] Precision seeding of corn is to sow a certain amount of corn seeds in holes at appropriate seed spacing and sowing depth per unit area of ​​land according to local natural conditions, corn characteristics and production requirements, so as to improve the uniformity of corn plant distribution in the field, allow corn plants to have enough growth space, obtain sufficient nutrients and water, and achieve reasonable density planting, thereby increasing yields.

[0003] At this stage, high speed and high precision are the inevitable requirements for the development of seed drills. Traditional seed drills rely on ground wheels to drive through various mechanical transmissions, which have certain limitations in operation and cannot meet the technical requirements of reasonable dense planting, precise adjustment and spatial distribution of plants. At present, the research on the seeding process includes the research on the structural performance of the seed drill itself, the research on seeding drive technology and variable seeding technology. The traditional finger-clip seed drill has the disadvantages of low sowing speed and inability to adapt to high-speed operations. At the same time, the situation of seed leakage cannot be detected and fed back in real time, so a new type of corn sowing electric-driven finger-clip seed drill is needed. Summary of the invention

[0004] The purpose of the present invention is to provide an electrically driven finger-clamp type corn precision sowing device with a simple design structure, a simple movement and a high degree of automation. The finger-clamp type seed-metering devices are symmetrically arranged on the left and right of a seed guide device, two finger-clamp type seed-metering devices are used to simultaneously transport seeds to the seed guide device in a staggered manner, and the rotation speed of the seed guide belt is increased through a planetary gear system to achieve the effect of increasing the sowing speed of the finger-clamp type seed-metering device.

[0005] To achieve the above purpose, the present invention provides an electric-driven finger-clamp type seed metering device that meets the requirements of corn precision seeding. The specific technical solution is as follows: An electric-driven finger-clamp type seed metering device for precision seeding of corn, the seed metering device comprising: a seed guide device, a shell is installed on both sides of the seed guide device, each shell is provided with an installation space inside for installing a finger clamping disc, each shell is connected to a seed box on the side away from the seed guide device, the finger clamping disc is used to transport seeds entering the shell from the seed box to the seed guide device, and the seeds are discharged by the seed guide device for seeding; The seed guide device comprises: a seed guide end cover and a seed guide shield, the edges of which are fixedly connected and form an installation space inside, and the installation space is arranged in the first gear and three second gears, the first gear is fixed to the upper inner part of the seed guide end cover, each of the second gears is fixedly connected to the planet carrier through a connecting column, the three second gears are evenly arranged outside the circumference of the first gear and mesh with the first gear respectively, and the outer sides of the three second gears are arranged with gear rings meshing with them; the lower inner side of the seed guide end cover is rotatably connected with a driven wheel, the driven wheel and the gear ring are connected through a seed guide belt transmission, and the outer side of the seed guide belt is connected with a plurality of evenly arranged spoon-shaped bosses; the seed guide end cover and the seed guide shield are both provided with seed inlets; the middle of the first gear is provided with a circular hole; The finger clamping plate comprises: a finger clamping pressure plate, a cam, a plurality of finger clamps and a spring, the finger clamping pressure plate comprises a circular bottom plate, an outer annular wall and an inner annular wall, the outer annular wall and the inner annular wall are integrally formed and fixedly connected above the circular bottom plate, a mounting circular hole is opened in the middle of the circular bottom plate, a plurality of U-shaped notches are opened along the circumference of the top of the outer annular wall and the inner annular wall, the U-shaped notches above the two correspond to each other and are used to install the finger clamps; each of the finger clamps comprises: a finger clamping rod, a front end on one side of the top of the finger clamping rod is fixedly connected with an arc-shaped finger clamping piece, finger clamping ears are respectively fixed on both sides of the lower part of the finger clamping rod, two parallel arranged finger clamping tail pieces are fixed on the bottom of the finger clamping rod, and every two finger clamps are connected by a spring, and the two ends of the spring are respectively hung on the finger clamping ears; The cam is arranged on the inner side of the inner annular wall and fixed to the outer shell by screws, and comprises: a first annular body and a second annular body fixed thereon, the two are coaxially arranged and integrally formed, a groove is opened on the top of the first annular body, a square protrusion structure is fixedly connected to the inner side of the second annular body, and the gap between the two finger clip tail pieces cooperates with the outer edge of the top of the first annular body; The top of the shell is provided with a seed outlet, the middle of the inner side of the shell is fixedly connected with an annular protrusion structure, the outer edge of the annular protrusion structure is provided with a square groove, in the use state, the second annular body is sleeved on the outer side of the annular protrusion structure, and the square groove and the square protrusion structure are used in conjunction with each other for limiting the cam; The seeding device also includes: a seeding shaft, one end of which is connected to the output end of the motor through a reducer, and the other end of the seeding shaft passes through a seed box close to it and extends to sequentially penetrate a finger clamping plate, a seed guide device and another finger clamping plate close to one side thereof, the planetary carrier and the two finger clamping pressure plates are respectively fixedly connected to the seeding shaft and rotate synchronously under the drive of the seeding shaft, the second gear moves synchronously with the planetary carrier under the drive of the planetary carrier, the ring gear rotates under the drive of the second gear, and the seed guide belt indirectly drives the driven wheel to rotate under the drive of the ring gear.

[0006] Furthermore, the seed metering device also includes: a seed cleaning brush, which is fixed on the inner side of the shell near the seed outlet and is used to clean excess seeds on the finger clamp.

[0007] Furthermore, the seed metering device also includes a collection system, which includes: a host and a collection module, an alarm module and a display module bidirectionally connected thereto, respectively; the collection module includes: a pressure film sensor, which is fixed at the seed outlet and is used to detect a seed pressure signal; when no pressure signal is transmitted to the host for more than a preset time, the alarm module is triggered.

[0008] Furthermore, the rotational speed of the planet carrier and the ring gear is 1:1.5.

[0009] Furthermore, according to the movement state of the finger clamp tail piece, the first annular body is divided into a clamping seed discharge area and a seed filling area, wherein the seed filling area is the groove.

[0010] Furthermore, the seeding shaft and the reducer are connected via a coupling.

[0011] Furthermore, a circular hole is opened in the middle of the first gear, a bearing is arranged in the circular hole, and the seed discharge shaft is rotatably connected to the seed guide end cover through the bearing.

[0012] Furthermore, the seed outlets on the two shells are arranged in staggered positions.

[0013] Beneficial effects of the present invention: First, the electric-driven finger-clamp seed metering device of the present invention uses two finger-clamping plates symmetrically installed on both sides of the seed guide device, and uses the seed delivery port to simultaneously deliver seeds inward in a staggered manner; the seed guide device is provided with a planetary gear for speeding up, and when the seeds are staggered into the seed guide belt, the speed of seeding is increased due to the increase in rotation speed, and it can adapt to high-speed seeding operations under the condition of coaxial transmission. The use of a motor and a reducer can meet the demand for controllable seeding spacing, thereby improving the operating efficiency.

[0014] Secondly, the present invention is equipped with a collection system. The clamped seeds pass through the seed outlet and touch the electrical signals generated by the piezoelectric sensor to collect and feedback, and the sowing quantity is monitored and counted in real time. When the seed meter fails and the seeds in the seed box are emptied, the alarm will use sound and light to alarm due to the long-term disappearance of the voltage signal. Its design is scientific and reasonable, easy to operate, and reasonably improves the planting density of corn, which is of great significance to the development of high-precision agriculture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of the seed meter provided by the present invention; Figure 2 An exploded view of the main structure provided by the present invention; Figure 3 A schematic diagram of the structure of the seed guiding device provided by the present invention; Figure 4 An exploded view of the finger chuck structure provided by the present invention; Figure 5 A schematic diagram of the structure of the finger clamp pressure plate provided by the present invention; Figure 6 A schematic diagram of the cam structure provided by the present invention; Figure 7 A schematic diagram of the connection of the finger clamp provided by the present invention; Figure 8 A schematic diagram of the housing structure provided by the present invention; Fig. 9 A schematic diagram of the structure of the seed guide belt provided by the present invention; Fig.10 A schematic diagram of the coupling structure provided by the present invention; Fig.11 This is a functional block diagram of the acquisition system provided by the present invention.

[0016] In the figure: 1, seed guide device; 2, finger clamping plate; 3, housing; 4, seed box; 5, seed discharge shaft; 6, coupling; 7, reducer; 8, motor; 9, seed cleaning brush; 11, seed guide end cover; 12, seed guide shield; 13, first gear; 14, second gear; 15, connecting column; 16, planetary carrier; 17, gear ring; 18, driven wheel; 19, seed guide belt; 110, first bearing; 111, seed inlet; 191, spoon-shaped boss; 21, finger clamping plate; 22, finger clamp; 23, spring; 24, cam; 211 , circular bottom plate; 212, outer annular wall; 213, inner annular wall; 214, U-shaped notch; 221, finger clamp rod; 222, finger clamp piece; 223, finger clamp ear; 224, finger clamp tail piece; 241, first annular body; 242, second annular body; 243, square protrusion structure; 2411, groove; 2412, clamping seed discharge area; 2413, seed filling area; 31, seed outlet; 32, annular protrusion structure; 33, square groove; 34, pressure film sensor; 91, half coupling; 92, elastic element. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] It should be noted that the terms "upper", "one side", etc. used in this article to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Similar expressions are only for the purpose of illustration, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0019] See also Figure 1-Figure 11 As shown: An electric-driven finger-clamp type seed metering device for precision seeding of corn, the seed metering device comprising: a seed guide device 1, a shell 3 is respectively installed on both sides of the seed guide device 1, each of the shells 3 is provided with an installation space inside for installing a finger clamping plate 2, each shell 3 is connected to a seed box 4 on the side away from the seed guide device 1, the finger clamping plate 2 is used to transport the seeds entering the shell 3 from the seed box 4 to the seed guide device 1, and the seeds are discharged by the seed guide device 1 for sowing; The seed guide device 1 comprises: a seed guide end cover 11 and a seed guide shield 12, the edges of which are fixedly connected by bolts and form an installation space inside, and a planetary gear train assembly is arranged in the installation space, which comprises: a first gear 13 and three second gears 14, the first gear 13 is fixed to the upper inner part of the seed guide end cover 11, each of the second gears 14 is fixedly connected to the planet carrier 16 through a connecting column 15, and the three second gears 14 are evenly arranged outside the circumference of the first gear 13 and are respectively connected to the first gear. The gear 13 is meshed, and the outer side of the three second gears 14 is arranged with a gear ring 17 meshing with it; the lower inner side of the seed guide end cover 11 is rotatably connected with a driven wheel 18, and the driven wheel 18 and the gear ring 17 are connected through a seed guide belt 19, and the outer side of the seed guide belt 19 is connected with 18 evenly arranged spoon-shaped bosses 191; the seed guide end cover 11 and the seed guide shield 12 are both provided with a seed inlet 111; the number of teeth of the gear ring 17, the first gear 13 and the second gear 14 are 68 teeth, 34 teeth and 17 teeth respectively. The transmission ratio of the planetary gear system i= Z2∶(Z1 +Z2); wherein, Z2 is the gear ring 107, which is 68; Z1 is the first gear 13, which is 34; that is, the rotation speed of the gear ring 17 and the planet carrier 16 is 1.5:1; the planet carrier 16 and the second gear 14 are driven by the seeding shaft 5, that is, the rotation speed of the seeding shaft 5 and the rotation speed of the gear ring 17 are 1:1.5; The finger clamping plate 2 comprises: a finger clamping plate 21, a cam 24, a plurality of finger clamps 22 and a spring 23. The finger clamping plate 21 comprises a circular bottom plate 211, an outer annular wall 212 and an inner annular wall 213. The outer annular wall 212 and the inner annular wall 213 are integrally formed and fixedly connected above the circular bottom plate 211. A mounting circular hole is opened in the middle of the circular bottom plate 211. The tops of the outer annular wall 212 and the inner annular wall 213 are both opened along the circumference. A plurality of U-shaped notches 214 are opened on the tops of the two. The notches 214 correspond to each other in pairs and are used to install the finger clamps 22; each of the finger clamps 22 comprises: a finger clamp rod 221, a front end of one side of the top of the finger clamp rod 221 is fixedly connected with an arc-shaped finger clamp piece 222, finger clamp hanging ears 223 are respectively fixed on both sides of the lower part of the finger clamp rod 221, and two parallel finger clamp tail pieces 224 are fixed at the bottom of the finger clamp rod 221, and each two finger clamps 22 are connected by a spring 23, and the two ends of the spring 23 are respectively hung on the finger clamp hanging ears 223; The cam 24 is arranged inside the inner annular wall 213 and fixed to the housing 3 by screws. The cam 24 comprises: a first annular body 241 and a second annular body 242 fixed thereon, which are coaxially arranged and integrally formed. A groove 2411 is formed on the top of the first annular body 241, and a square protrusion structure 243 is fixedly connected to the inside of the second annular body 242. The gap between the two finger clip tail pieces 224 cooperates with the outer edge of the top of the first annular body 241. The top of the shell 3 is provided with a seed outlet 31, and the middle of the inner side of the shell 3 is fixedly connected with an annular protrusion structure 32, and the outer edge of the annular protrusion structure 32 is provided with a square groove 33. When in use, the second annular body 242 is sleeved on the outer side of the annular protrusion structure 32, and the square groove 33 is used in conjunction with the square protrusion structure 243 to limit the cam 24, so as to achieve stable seeding of the finger-clamp type seed metering device; further, according to the movement state of the finger-clamp tail piece 224, the first annular body 241 is divided into a clamping seeding area 2412 and a seed filling area 2413, wherein the seed filling area 2413 is at the groove 2411. Furthermore, the seed outlets 31 on the two shells 3 are arranged in a staggered position; The seeding device also includes: a seeding shaft 5, one end of which is connected to the output end of the motor 8 through a reducer 7, and the other end of the seeding shaft 5 passes through the seed box 4 close to it and extends to sequentially penetrate the finger clamping plate 2, the seed guide device 1 and the other finger clamping plate 2 close to one side thereof, the planetary frame 16 and the two finger clamping plates 21 are respectively fixedly connected to the seeding shaft 5, and rotate synchronously under the drive of the seeding shaft 5, the second gear 14 moves synchronously with it under the drive of the planetary frame 16, the gear ring 17 rotates under the drive of the second gear 14, and the seed guide belt 19 indirectly drives the driven wheel 18 to rotate under the drive of the gear ring 17. Further, a circular hole is opened in the middle of the first gear 13, and a bearing 110 is arranged in the circular hole, and the seeding shaft 5 is rotatably connected to the seed guide end cover 11 through the bearing 110; the seeding shaft 5 is rotatably connected to the seed box 4, the housing 3 and the seed guide shield 12 through the same bearing.

[0020] Furthermore, the seeding shaft 5 is connected to the reducer via a coupling 6. The motor 8 and the reducer 7 are driving mechanisms for driving the seeding device. The output shaft of the motor 8 is fixedly connected to the input end of the reducer 7 through a key fit, and the output shaft of the reducer 7 is fixedly connected through a retaining spring, and is connected to the seeding shaft 5 via a plum blossom-shaped coupling 9 to complete the driving of the seeding device; the reducer 7 is connected to the seeding shaft 6 to realize the power transmission of the seeding device, and the speed is adjusted by the motor 8 to achieve the control of the sowing spacing and the start and stop of the seeding device.

[0021] The coupling 6 is composed of two half couplings 61 and an elastic element 62. The half coupling is fixed on the seeding shaft 5 by pins, and the elastic element 62 is installed between the half couplings 61. The coupling 6 can transmit power stably and coaxially.

[0022] Furthermore, the seed metering device further comprises: a seed cleaning brush 9 , which is fixed on the inner side of the housing 3 near the seed outlet 31 , and has a brush disposed therein for cleaning excess seeds on the finger clamp 222 .

[0023] Furthermore, the seed metering device also includes a collection system, which includes: a host and a collection module, an alarm module and a display module bidirectionally connected thereto, respectively; the collection module includes: a pressure film sensor 34, which is fixed to the seed outlet 31 by adhesive, and is used to detect seed pressure signals; when the clamped seeds pass through the seed outlet, they will first hit the pressure film sensor 34, and when a force is applied to the surface of the pressure film, an electrical signal will be generated, and the number of sowings will be counted in real time by collecting the electrical signal and feeding back to the host, wherein the pressure film sensor 34 can be a piezoelectric film sensor model LDT1-028K of Jiangmen Antai Electronics Co., Ltd. When no pressure signal is transmitted to the host for more than a preset time, the alarm module is triggered.

[0024] The working principle of the seed metering device is as follows: seeds are added to the seed box 4, and the servo motor 8 is started to drive the seed metering shaft 5 to rotate. The seed metering shaft 5 directly drives the two finger clamping pressure plates 21 and the planetary frame 16 to rotate. During the rotation of the finger clamping pressure plate 21, the finger clamping tail piece 224 moves along the outer edge of the cam 24, passes through the clamping seed metering area 2412 and the seed filling area 2413. When passing through the clamping seed metering area 2412, the arc-shaped finger clamping piece 222 rotates toward the outer shell 3 to clamp a seed. When passing through the seed filling area 2413, the finger clamping piece 222 rotates in the opposite direction, and the seed passes through the seed outlet 31 to complete the transportation, and the seed enters the seed guide device 1.

[0025] The new seeding drive technology collects the operating speed signal of the seeder to control the speed of the drive system, thereby achieving precise control of the speed of the seed meter. It also provides the possibility for variable seeding technology. The use of a new drive system to drive the seed meter has gradually become a development trend.

Claims

1. An electric-driven finger-clamp type seed metering device that meets the requirements of precision corn seeding, characterized in that: The seed metering device comprises: A seed guide device (1), wherein a shell (3) is installed on both sides of the seed guide device (1), each shell (3) is provided with an installation space inside for installing a finger clamping plate (2), and each shell (3) is connected to a seed box (4) on the side away from the seed guide device (1), and the finger clamping plate (2) is used to transport seeds entering the shell (3) from the seed box (4) to the seed guide device (1), and the seeds are discharged by the seed guide device (1) for sowing; The seed guide device (1) comprises: a seed guide end cover (11) and a seed guide shield (12), the edges of which are fixedly connected and form an installation space inside, wherein the installation space is arranged with: a first gear (13) and three second gears (14), wherein the first gear (13) is fixed to the upper inner side of the seed guide end cover (11), each of the second gears (14) is fixedly connected to a planet carrier (16) via a connecting column (15), and the three second gears (14) are evenly arranged on the first gear (13). The outer side of the circumference is respectively meshed with the first gear (13), and the outer side of the three second gears (14) is arranged with a gear ring (17) meshing with the first gear (13); the lower inner side of the seed guide end cover (11) is rotatably connected to a driven wheel (18), the driven wheel (18) and the gear ring (17) are connected to the seed guide belt (19) through a transmission connection, and the outer side of the seed guide belt (19) is connected to a plurality of evenly arranged spoon-shaped bosses (191); the seed guide end cover (11) and the seed guide shield (12) are both provided with a seed inlet (111); The finger clamping plate (2) comprises: a finger clamping plate (21), a cam (24), a plurality of finger clamps (22) and a spring (23); the finger clamping plate (21) comprises a circular bottom plate (211), an outer annular wall (212) and an inner annular wall (213); the outer annular wall (212) and the inner annular wall (213) are integrally formed and fixedly connected above the circular bottom plate (211); a mounting circular hole is provided in the middle of the circular bottom plate (211); a plurality of U-shaped notches (214) are provided along the circumference of the tops of the outer annular wall (212) and the inner annular wall (213); the U-shaped notches (214) above the two correspond to each other and are used to mount the finger clamps (22); Each of the finger clamps (22) comprises: a finger clamp rod (221), a front end of a top side of the finger clamp rod (221) is fixedly connected to an arc-shaped finger clamp piece (222), finger clamp hanging ears (223) are respectively fixed to both sides of the lower part of the finger clamp rod (221), and two parallel arranged finger clamp tail pieces (224) are fixed to the bottom of the finger clamp rod (221), and every two finger clamps (22) are connected via a spring (23), and the two ends of the spring (23) are respectively hung on the finger clamp hanging ears (223); The cam (24) is arranged on the inner side of the inner annular wall (213) and fixed to the outer shell (3) by screws, and comprises: a first annular body (241) and a second annular body (242) fixed thereon, the two being coaxially arranged and integrally formed, the first annular body (241) having a groove (2411) on the top, the second annular body (242) having a square protrusion structure (243) fixedly connected to the inner side, and the gap between the two finger clip tail pieces (224) being used in conjunction with the outer edge of the top of the first annular body (241); The outer shell (3) has a seed outlet (31) at the top, an annular protrusion structure (32) is fixedly connected to the middle of the inner side of the outer shell (3), and a square groove (33) is formed at the outer edge of the annular protrusion structure (32). In a use state, the second annular body (242) is sleeved on the outer side of the annular protrusion structure (32), and the square groove (33) and the square protrusion structure (243) are used in conjunction with each other to limit the cam (24); The seeding device further comprises: a seeding shaft (5), one end of which is connected to the output end of the motor (8) via a reducer (7), the other end of which passes through a seed box (4) close to it and extends to sequentially penetrate a finger clamping disc (2), a seed guide device (1) and another finger clamping disc (2) close to one side thereof, the planetary frame (16) and the two finger clamping plates (21) are respectively fixedly connected to the seeding shaft (5) and rotate synchronously under the drive of the seeding shaft (5), the second gear (14) moves synchronously with the planetary frame (16), the gear ring (17) rotates under the drive of the second gear (14), and the seed guide belt (19) indirectly drives the driven wheel (18) to rotate under the drive of the gear ring (17).

2. The electric-driven finger-clamp type seed metering device for corn precision seeding according to claim 1 is characterized in that: The seed metering device further comprises: a seed cleaning brush (9), which is fixed on the inner side of the housing (3) near the seed outlet (31) and is used to clean excess seeds on the finger clamp (222).

3. The electric-driven finger-clamp type seed metering device for corn precision seeding according to claim 1 is characterized in that: The seed metering device further comprises a collection system, which comprises: a host and a collection module, an alarm module and a display module respectively connected thereto in a bidirectional manner; the collection module comprises: a pressure film sensor (34); the pressure film sensor (34) is fixed at the seed outlet (31) and is used to detect a seed pressure signal; when no pressure signal is transmitted to the host for more than a preset time, the alarm module is triggered.

4. The electric-driven finger-clamp type seed metering device for precision seeding of corn according to claim 1, characterized in that: The rotational speed of the planet carrier (16) and the ring gear (17) is 1:1.

5.

5. The electric-driven finger-clamp type seed metering device for corn precision seeding according to claim 1, characterized in that: According to the movement state of the finger clamp tail piece (224), the first annular body (241) is divided into a clamping seed discharge area (2412) and a seed filling area (2413), wherein the seed filling area (2413) is the groove (2411).

6. The electric-driven finger-clamp type seed metering device for corn precision seeding according to claim 1, characterized in that: The seeding shaft (5) is connected to the reducer via a coupling (6).

7. The electric-driven finger-clamp type seed metering device for corn precision seeding according to claim 1, characterized in that: A circular hole is formed in the middle of the first gear (13), a bearing (110) is arranged in the circular hole, and the seed discharging shaft (5) is rotatably connected to the seed guide end cover (11) via the bearing (110).

8. The electric-driven finger-clamp type seed metering device for corn precision seeding according to claim 1, characterized in that: The seed outlets (31) on the two housings (3) are arranged in staggered positions.

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