A multi-point seeding machine for pasture planting

Abstract

The present application relates to the technical field of agricultural seeding machinery, in particular to a pasture planting multi-point planting seeder, which comprises a seeder frame, the seeder frame is provided with a material box, the material box is connected with a plurality of discharge pipes, the lower end of each discharge pipe is correspondingly connected with a plurality of feeding pipes arranged in a straight line, and the feeding pipes are installed on the seeder frame; the side surface of each feeding pipe is fixedly connected with a supplementary feeding pipe, and the feeding end of the supplementary feeding pipe is connected to the material box. The pasture planting multi-point planting seeder can detect the seed volume in the feeding pipe in real time before the seed is discharged through the linkage cooperation of the pressing plug, the damping spring telescopic rod, the T-shaped toothed plate, the gear, the one-way bearing and the stirring disc. When the detected seed volume is insufficient, the compression amount of the damping spring telescopic rod is converted into the upward movement distance of the T-shaped toothed plate, thereby driving the stirring disc to rotate by a corresponding angle, accurately supplementing the lacking seed amount, ensuring the uniformity of single-hole seeding amount, and effectively avoiding the phenomenon of seedling shortage and ridge breakage.

Description

Technical Field

[0001] This invention relates to the field of agricultural seeding machinery technology, specifically to a seeder for forage planting that allows for multi-site planting. Background Technology

[0002] With the rapid development of my country's animal husbandry, the scale of high-quality forage planting is constantly expanding. Sowing, as the core link in forage planting, directly affects the yield and quality of forage through its operational efficiency and sowing quality. Multi-point seeders, which can complete the operation of multiple sowing points simultaneously, greatly improve sowing efficiency and have been widely used in large-scale forage planting.

[0003] However, existing multi-point forage seeders still have the following drawbacks in practical use: Poor uniformity of seeding rate: Different varieties of forage seeds have large differences in particle size and shape. The seeding mechanism of traditional seeders is difficult to accurately control the seeding rate per hole, which can easily lead to insufficient seeding in some seeding points and excessive seeding in others, resulting in missing seedlings or overly dense seedlings, which affects the growth of forage grass.

[0004] Lack of automatic replanting function: Most existing seeders do not have real-time seed quantity detection and automatic replanting capabilities. When problems such as poor seed distribution or seed jamming occur, resulting in insufficient seed quantity per hole, they cannot be replenished in time and require manual replanting, which increases labor costs and makes it difficult to grasp the timing of replanting.

[0005] Low precision in seeding rate adjustment: Traditional seeders mostly use an overall adjustment method for seeding rate adjustment, which cannot make precise fine adjustments for individual seeding units. This makes it difficult to adapt to the personalized seeding needs of different forage varieties and results in poor versatility.

[0006] Therefore, there is an urgent need to develop a forage planter capable of real-time detection of seeding amount per hole, automatic and precise reseeding, adjustable seeding amount, and good synchronization for multi-point planting, in order to solve the problems existing in the above-mentioned technologies. Summary of the Invention

[0007] The purpose of this invention is to provide a multi-site planting seeder for forage cultivation, thereby solving the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a multi-site planting seeder for forage cultivation, comprising a seeder frame, a feed hopper connected to the seeder frame, a plurality of feed pipes connected to the feed hopper, a plurality of linearly distributed feeding pipes corresponding to the lower ends of the feed pipes, the feeding pipes being mounted on the seeder frame; a supplementary feeding pipe fixedly connected to the side of the feeding pipe, the feeding end of the supplementary feeding pipe being connected to the feed hopper, and a feeding disc rotatably connected inside the supplementary feeding pipe; It also includes multiple detection and control mechanisms corresponding to the feeding pipes. Each detection and control mechanism includes a crankshaft. The crankshafts of multiple detection and control mechanisms are coaxially fixedly connected in sequence to form an integral transmission crankshaft for simultaneously driving all detection and control mechanisms to rotate synchronously. Both ends of the integral transmission crankshaft are fixed to the material box through connecting frames. One end of the integral transmission crankshaft is connected to a drive motor through a transmission belt. The drive motor is installed on one side of the seeder frame. The crankshaft is hinged to a control rod by a crank pin. The lower end of the control rod is hinged to a damping spring telescopic rod for compressing the seeds when the pressure plug squeezes them. The amount of compression corresponds to the volume of the missing seeds. The lower end of the damping spring telescopic rod is hinged to a pressure plug for squeezing the seeds in the feeding tube and detecting whether the seed volume is sufficient. The pressure plug is slidably disposed in the feeding tube. The side of the pressure plug is fixedly connected to a T-shaped toothed plate, which is slidably disposed in a vertical groove opened on the side of the feeding pipe; The T-shaped toothed plate is engaged with a gear, and a one-way bearing is fixedly connected to the end face of the gear. A connecting shaft is fixedly connected to the inner ring of the one-way bearing. The connecting shaft extends into the feeding tube and is fixedly connected to the middle of the end face of the feeding disc used to control the amount of seeds fed into the feeding tube by rotating the angle.

[0008] Preferably, the inner wall of the feeding pipe is hinged with a sealing plate for sealing the feeding pipe and simultaneously discharging the main seed and supplementary seed after the detection and reseeding are completed. The sealing plate is located at the lower end of the feeding pipe outlet, and one side of the sealing plate extends to the outside of the feeding pipe and is hinged with a vertically arranged hinge rod. The upper side of the hinge rod slides through the connecting frame, and a return spring is sleeved on the outside of the hinge rod for automatically resetting the sealing plate. The upper ends of the two hinge rods are fixedly connected with push plates for triggering the seed discharging action by being squeezed by the crankshaft crank pin. The push plates are located above the crankshaft. When the crankshaft crank pin rotates to the upper position, it squeezes the push plates, and the sealing plate is pulled downward by the hinge rod.

[0009] Preferably, it further includes an adjustment mechanism for adjusting the initial height of the pressure plug in the feeding tube, thereby changing the single-hole seed detection volume threshold. The adjustment mechanism includes a rotating rod that passes through two connecting frames. A first bevel gear is fixedly sleeved on the rotating rod, and the first bevel gear meshes with a second bevel gear. A screw is fixedly connected to the end face of the second bevel gear. A U-shaped frame is movably sleeved on the outside of the screw, and two vertical plates of the U-shaped frame are movably sleeved on the rotating rod. A slider is threadedly connected to the lower end of the screw, and the slider is slidably disposed in an arc-shaped track, which is fixed to the feeding tube. A deflection plate is hinged to the slider, and the other end of the deflection plate is hinged to the lower end of the control rod.

[0010] Preferably, the rotating rods of all the adjustment mechanisms are coaxially fixedly connected in sequence to form an overall adjustment shaft for adjusting the seeding amount of each hole in all seeding units at once.

[0011] Preferably, the feeding tube is an S-shaped structure used to ensure smooth seed delivery and provide a stable rotation space for the feeding disc. The feeding tube has a rectangular cross-section, with the upper cross-sectional dimension being larger than the lower cross-sectional dimension. The middle part of the feeding tube is a circular cavity, and the feeding disc is rotatably disposed within this circular cavity.

[0012] Preferably, the side of the T-shaped toothed plate is fixedly connected to an arc plate for moving synchronously with the T-shaped toothed plate and always sealing the vertical groove on the side of the feeding pipe to prevent seed leakage. The arc plate slides against the outer wall of the feeding pipe.

[0013] Preferably, the middle part of the feeding tube has a rectangular structure, and the lower end of the middle part of the feeding tube is chamfered to facilitate the smooth discharge of seeds; an inclined plate is fixedly connected to the inner wall of the feeding tube for cooperating with the sealing plate to block the outlet of the feeding tube, and the inclined plate cooperates with the sealing plate to block the outlet of the feeding tube.

[0014] Preferably, the hinge rod is formed by hinged two movable rods, and one end of the return spring is fixed to the hinge rod, and the other end is fixed to the connecting frame.

[0015] Preferably, the side of the feeding disc is provided with a feeding trough for receiving and conveying replenishing seeds.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention enables real-time seed quantity detection and precise automatic reseeding: Through the coordinated operation of a pressure plug, a damping spring telescopic rod, a T-shaped toothed plate, gears, a one-way bearing, and a feeding disc, the invention can detect the seed volume in the feeding tube in real time before seed discharge. When insufficient seed volume is detected, the compression of the damping spring telescopic rod is converted into an upward movement of the T-shaped toothed plate, which in turn drives the feeding disc to rotate at a corresponding angle, precisely replenishing the missing seed quantity. This ensures the uniformity of seeding per hole and effectively avoids gaps in the rows.

[0017] This invention enables simultaneous multi-point sowing with high operational efficiency: The invention employs a structural design that coordinates multiple rows of pipes with multiple feeding pipes, allowing for simultaneous seed dispensing at multiple sowing points and achieving simultaneous multi-point planting, thus significantly improving the sowing efficiency of large-scale forage planting.

[0018] This invention features a precisely adjustable seeding rate and strong versatility: An adjustment mechanism is incorporated, which, by rotating the overall adjustment shaft, drives the rotating rod to rotate. Through bevel gear transmission, screw-slider cooperation, and deflection plate linkage, the distance between the pressure plug and the sealing plate can be precisely adjusted, thereby changing the detection volume threshold of seeds per hole. This adapts to forage varieties with different particle sizes and seeding rate requirements, significantly improving the versatility of the seeder.

[0019] This invention features an integrated transmission design with excellent synchronization: the crankshafts of all detection and control mechanisms are coaxially fixedly connected to form an integrated transmission crankshaft, and the rotating rods of all adjustment mechanisms are coaxially fixedly connected to form an integrated adjustment shaft. All sowing units can be driven synchronously by a single drive motor, ensuring a high degree of coordination and consistency in sowing, detection, reseeding, and seed metering actions, and avoiding the problem of misalignment. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the crankshaft and connecting bracket of the present invention; Figure 3 This is a three-dimensional structural diagram of the rotating rod, the first bevel gear, and the second bevel gear of the present invention; Figure 4 This is a three-dimensional structural diagram of the arc-shaped track and deflection plate of the present invention; Figure 5 This is a three-dimensional cross-sectional view of the feeding pipe of the present invention; Figure 6 This is a three-dimensional structural diagram of the damping spring telescopic rod and the pressure plug of the present invention; Figure 7 This is a three-dimensional cross-sectional view of the feeding tube of the present invention.

[0021] In the diagram: 1. Seeder frame; 2. Pipeline; 3. Feeding pipe; 4. Supplementing pipe; 41. Feeding disc; 5. Crankshaft; 51. Connecting frame; 52. Adjusting rod; 53. Damping spring telescopic rod; 54. Pressure plug; 55. T-shaped toothed plate; 56. Gear; 57. One-way bearing; 6. Sealing plate; 61. Hinge rod; 62. Return spring; 63. Push plate; 7. Drive motor; 8. Rotating rod; 81. First bevel gear; 82. Second bevel gear; 83. Screw; 84. U-shaped frame; 85. Slider; 86. Arc track; 87. Deflection plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 7This invention provides a technical solution: a multi-site planting seeder for forage cultivation, comprising a seeder frame 1, multiple pipes 2 connected to the feed hopper of the seeder frame 1, and a seeding disc installed inside the feed hopper of the seeder frame 1. The seeding disc is prior art and will not be described in detail here. The seeding speed of the seeding disc is adjustable. The seeding disc transports the grass seeds in the feed hopper of the seeder frame 1 to the pipes 2. The lower end of the pipes 2 is connected to multiple linearly distributed feeding pipes 3. The number of pipes 2 and feeding pipes 3 are matched to achieve multi-site planting. For point planting, the feeding pipe 3 is installed on the seeder frame 1. The feeding pipe 3 is fixedly connected to the side of the feeding pipe 3 and the replenishing pipe 4. The seeding tray simultaneously feeds the replenishing pipe 4 with seeds for replenishment. The feed end of the replenishing pipe 4 is connected to the feed box of the seeder frame 1. When the seed volume is insufficient during a single feeding process, it is replenished through the replenishing pipe 4. The replenishing pipe 4 is rotatably connected to the feeding disc 41. The feeding disc 41 is provided with a replenishing groove on its side. The amount of seeds replenished by the replenishing pipe 4 can be adjusted by controlling the rotation angle of the feeding disc 41. Multiple detection and control mechanisms are fixedly connected to the feed box of the seeder frame 1, and the number of detection and control mechanisms matches the number of feed tubes 3. The detection and control mechanism includes a crankshaft 5. The crankshafts 5 of each detection and control mechanism are coaxially fixedly connected in sequence to form an integral transmission crankshaft. The crankshaft 5 at the end is connected to a drive motor 7 via a transmission belt. The drive motor 7 is installed on one side of the seeder frame 1 to facilitate the simultaneous rotation of all crankshafts 5. Both ends of the crankshaft 5 are movably connected to the connecting bracket 51 through the connecting bearing. The two connecting brackets 51 are fixed on the feed box of the seeder frame 1 as a group. An adjusting rod 52 is hinged to the crank pin of the crankshaft 5. A damping spring telescopic rod 53 is hinged to the end of the adjusting rod 52 away from the crankshaft 5. A pressure plug 54 is hinged to the lower end of the damping spring telescopic rod 53. The pressure plug 54 is slidably set in the feeding pipe 3. A T-shaped toothed plate 55 is fixedly connected to the side of the pressure plug 54. The T-shaped toothed plate 55 is slidably disposed in the vertical groove opened on the side of the feeding pipe 3. A gear 56 meshes on the tooth surface of the T-shaped toothed plate 55. A one-way bearing 57 is fixedly connected to the end face of the gear 56. A connecting shaft is fixedly connected to the inner ring of the one-way bearing 57, and the connecting shaft extends into the feeding pipe 4 and is fixedly connected to the middle of the end face of the feeding disc 41.

[0024] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 7As shown, the middle part of the feeding pipe 3 is rectangular, and the lower end of the middle part of the feeding pipe 3 is chamfered. A sealing plate 6 is hinged to the inner wall of the feeding pipe 3 through a hinge shaft, and the sealing plate 6 is located at the lower end of the outlet of the feeding pipe 4. An inclined plate is fixedly connected to the middle part of the feeding pipe 3. The inclined plate and the sealing plate 6 cooperate to block the outlet of the feeding pipe 4. The sealing plate 6 is inclined inside the feeding pipe 3. One side of the sealing plate 6 extends to the outside of the feeding pipe 3 and is hinged to a vertically arranged hinge rod 61. The hinge rod 61 is formed by two movable rods hinged together. The movable rod on the upper side of the hinge rod 61 slides through the connecting frame 51, and a return spring 62 is sleeved on the outside of the hinge rod 61. One end of the return spring 62 is fixed to the hinge rod 61, and the other end is fixed to the connecting frame 51. Push plates 63 are fixedly connected to the upper ends of the two hinge rods 61. The push plates 63 are located above the crankshaft 5. When the crank pin of the crankshaft 5 rotates to the top, it presses the push plates 63, which in turn pulls the sealing plate 6 downward through the hinge rods 61.

[0025] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 7 As shown, the two connecting frames 51 are also provided with adjustment mechanisms on their sides. The adjustment mechanisms include a rotating rod 8, which passes through the two connecting frames 51. A first bevel gear 81 is fixedly sleeved on the rotating rod 8. A second bevel gear 82 meshes with the first bevel gear 81. A screw 83 is fixedly connected to the end face of the second bevel gear 82. A U-shaped frame 84 is movably sleeved on the outside of the screw 83. The two vertical plates of the U-shaped frame 84 are movably sleeved on the rotating rod 8. The lower side of the screw 83 is threadedly connected to a slider 85. The slider 85 is slidably set in the arc-shaped track 86, which is fixed on the corresponding feeding pipe 3. A deflection plate 87 is also hinged to the slider 85, and the end of the deflection plate 87 away from the slider 85 is hinged to the end of the control rod 52 away from the crankshaft 5.

[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 7 As shown, the feeding tube 4 is S-shaped, and the cross-section of the feeding tube 4 is rectangular. The upper cross-sectional dimension of the feeding tube 4 is larger than the lower cross-sectional dimension, and the middle part of the feeding tube 4 is a circular cavity to ensure that the feeding disc 41 rotates stably inside the feeding tube 4 to complete the feeding.

[0027] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 7As shown, an arc plate is fixedly connected to the side of the T-shaped toothed plate 55, and the arc plate slides against the outer wall of the feeding pipe 3 to block the vertical groove.

[0028] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 7 As shown, the number of rotating rods 8 matches the number of feeding pipes 3, and the rotating rods 8 of the adjustment mechanism are coaxially fixedly connected in sequence to form an integral adjustment shaft.

[0029] The method of use and advantages of this invention: The working process of this forage planting machine that can plant at multiple locations is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 7 As shown, the seeder frame 1 is connected to the mobile vehicle body. Then, according to the volume of different seeds to be placed at one time, the rotating rod 8 is rotated to drive the first bevel gear 81 to rotate, which causes the second bevel gear 82 to drive the screw 83 to rotate. This causes the slider 85 on the screw 83 to move in the arc track 86. In conjunction with the deflection plate 87, the control rod 52 is deflected, and the pressure plug 54 at the lower end of the damping spring telescopic rod 53 slides up and down in the feeding tube 3. According to the sowing requirements, the distance between the pressure plug 54 and the sealing plate 6 is adjusted to facilitate the subsequent detection of the volume of seeds put into this section of the feeding tube 3, so as to avoid the situation that the amount of seeds is insufficient during a single sowing. The moving vehicle body drives the seeder frame 1 to move, and the drive motor 7 is started to drive the crankshaft 5 to rotate. During the rotation of the crankshaft 5, it works with the control rod 52 to push the damping spring telescopic rod 53 to move up and down. During the downward movement of the damping spring telescopic rod 53, it drives the pressure plug 54 and the T-shaped toothed plate 55 to move down synchronously. During the downward movement of the T-shaped toothed plate 55, it drives the gear 56 to rotate. At this time, the outer ring of the one-way bearing 57 rotates with the gear 56, while the inner ring remains stationary with the feeding disc 41. When the pressure plug 54 at the lower end of the damping spring telescopic rod 53 squeezes the seed, it can no longer move downward. At this time, the damping spring telescopic rod 53 is compressed. Then, as the damping spring telescopic rod 53 moves upward, it drives the pressure plug 54 and the T-shaped toothed plate 55 to move upward synchronously. At this time, the outer and inner rings of the one-way bearing 57 are rotated simultaneously through the T-shaped toothed plate 55, which in turn drives the feeding disc 41 to rotate in conjunction with the connecting shaft. The rotation angle of the feeding disc 41 corresponds to the upward movement distance of the T-shaped toothed plate 55, ensuring that the rotation of the feeding disc 41 matches the amount of seeds discharged from the feeding tube 4 with the amount of missing seeds detected, thus ensuring the balance of the sowing volume. When the crank pin of crankshaft 5 rotates to its highest point, it squeezes the push plate 63, causing the push plate 63 to cooperate with the hinge rod 61 to pull the sealing plate 6 to deflect, thereby simultaneously discharging the seeds in the feeding pipe 3 and the replenishing pipe 4, completing the seed dispensing at one sowing point. The device repeats the above operation to continuously sow the seeds, and during the sowing process, it detects the volume of the seeds to be discharged in real time. When it detects that the seed volume is insufficient, it automatically replenishes the seeds.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seeder for forage planting that allows for multi-point planting, comprising a seeder frame (1), wherein the seeder frame (1) is provided with a feed box, the feed box is connected to a plurality of pipes (2), the lower ends of the pipes (2) are correspondingly connected to a plurality of feeding pipes (3) arranged in a straight line, the feeding pipes (3) are installed on the seeder frame (1); a supplementary feeding pipe (4) is fixedly connected to the side of the feeding pipe (3), the feeding end of the supplementary feeding pipe (4) is connected to the feed box, and a feeding disc (41) is rotatably connected inside the supplementary feeding pipe (4), characterized in that: It also includes multiple detection and control mechanisms corresponding to the feeding pipe (3). The detection and control mechanism includes a crankshaft (5). The crankshafts (5) of multiple detection and control mechanisms are coaxially fixedly connected in sequence to form an integral transmission crankshaft for simultaneously driving all detection and control mechanisms to rotate synchronously. The two ends of the integral transmission crankshaft are fixed to the material box through the connecting frame (51). One end of the integral transmission crankshaft is connected to a drive motor (7) through a transmission belt. The drive motor (7) is installed on one side of the seeder frame (1). The crankshaft (5) is hinged to a control rod (52) at the crank pin. The lower end of the control rod (52) is hinged to a damping spring telescopic rod (53) for compressing the seeds when the pressure plug squeezes them, and the amount of compression corresponds to the volume of the missing seeds. The lower end of the damping spring telescopic rod (53) is hinged to a pressure plug (54) for squeezing the seeds in the feeding tube and detecting whether the seed volume is sufficient. The pressure plug (54) is slidably disposed in the feeding tube (3). The side of the pressure plug (54) is fixedly connected to a T-shaped toothed plate (55), and the T-shaped toothed plate (55) is slidably disposed in the vertical groove opened on the side of the feeding pipe (3); The T-shaped toothed plate (55) is meshed with a gear (56), and a one-way bearing (57) is fixedly connected to the end face of the gear (56). A connecting shaft is fixedly connected to the inner ring of the one-way bearing (57), and the connecting shaft extends into the feeding tube (4) and is fixedly connected to the middle of the end face of the feeding disc (41) used to control the amount of seeds fed into the feeding tube by rotating the angle.

2. The forage seeder for multi-site planting according to claim 1, characterized in that: The inner wall of the feeding pipe (3) is hinged with a sealing plate (6) for sealing the feeding pipe and simultaneously discharging the main seed and the supplementary seed after the detection and replanting are completed. The sealing plate (6) is located at the lower end of the discharge port of the feeding pipe (4). One side of the sealing plate (6) extends to the outside of the feeding pipe (3) and is hinged with a vertically arranged hinge rod (61). The upper side of the hinge rod (61) slides through the connecting frame (51). The outer side of the hinge rod (61) is fitted with a reset spring (62) for automatically resetting the sealing plate. The upper ends of the two hinge rods (61) are fixedly connected with a push plate (63) for triggering the seed discharging action by the crankshaft crank pin. The push plate (63) is located above the crankshaft (5). When the crank pin of the crankshaft (5) rotates to the top, it presses the push plate (63) and pulls the sealing plate (6) downward through the hinge rod (61).

3. A seeder for forage planting capable of multi-site planting according to claim 2, characterized in that: It also includes an adjustment mechanism for adjusting the initial height of the pressure plug in the feeding tube, thereby changing the single-hole seed detection volume threshold. The adjustment mechanism includes a rotating rod (8), which passes through two connecting frames (51). A first bevel gear (81) is fixedly sleeved on the rotating rod (8). The first bevel gear (81) meshes with a second bevel gear (82). A screw (83) is fixedly connected to the end face of the second bevel gear (82). A U-shaped frame (84) is movably sleeved on the outside of the screw (83). Two vertical plates of the U-shaped frame (84) are movably sleeved on the rotating rod (8). A slider (85) is threadedly connected to the lower end of the screw (83). The slider (85) is slidably disposed in an arc track (86). The arc track (86) is fixed on the feeding tube (3). A deflection plate (87) is hinged to the slider (85). The other end of the deflection plate (87) is hinged to the lower end of the control rod (52).

4. A seeder for forage planting capable of multi-site planting according to claim 3, characterized in that: All the rotating rods (8) of the adjustment mechanism are coaxially fixedly connected in sequence to form an overall adjustment shaft for adjusting the seeding amount of each hole in all seeding units at one time.

5. A seeder for forage planting with multi-site planting capability according to claim 1, characterized in that: The feeding tube (4) is an S-shaped structure used to ensure smooth seed delivery and provide a stable rotation space for the feeding disc. The feeding tube (4) has a rectangular cross-section, with the upper cross-section being larger than the lower cross-section. The middle part of the feeding tube (4) is a circular cavity, and the feeding disc (41) is rotatably disposed in this circular cavity.

6. A seeder for forage planting capable of multi-site planting according to claim 1, characterized in that: The side of the T-shaped toothed plate (55) is fixedly connected to an arc plate for moving synchronously with the T-shaped toothed plate and always sealing the vertical groove on the side of the feeding pipe to prevent seed leakage. The arc plate slides against the outer wall of the feeding pipe (3).

7. A seeder for forage planting capable of multi-site planting according to claim 1, characterized in that: The middle part of the feeding tube (3) is rectangular, and the lower end of the middle part of the feeding tube (3) is chamfered to facilitate the smooth discharge of seeds; the inner wall of the feeding tube (3) is fixedly connected with an inclined plate for cooperating with the sealing plate to block the outlet of the feeding tube, and the inclined plate cooperates with the sealing plate (6) to block the outlet of the feeding tube (4).

8. A seeder for forage planting capable of multi-site planting according to claim 2, characterized in that: The hinge rod (61) is formed by two movable rods hinged together. One end of the return spring (62) is fixed on the hinge rod (61), and the other end is fixed on the connecting frame (51).

9. A seeder for forage planting capable of multi-site planting according to claim 1, characterized in that: The feeding tray (41) has a feeding trough on its side for accommodating and conveying the replenishing seeds.

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