A precision seeder for wide intercropping of silage corn and soybean

Abstract

The invention relates to a wide-width intercropping precision seeder for silage corn and soybean, comprising a frame, a drip irrigation tape laying device, a film laying device, a soil covering roller device, a film and tape breaking device and a sowing device; the invention can reduce the blockage of sticky soil at the soil covering opening through the design of opposite spiral blades in the soil covering roller device, accelerate the speed of soil moving out of the roller soil covering opening, thereby increasing the amount of soil covering the film surface, and realizing stable and uniform soil covering; the ground film and the drip irrigation tape are cut off under the joint action of the film and tape breaking device and the soil covering roller device, and the ground film and the drip irrigation tape used for subsequent laying can be immediately fixed at the lower edge of the soil covering roller, thereby improving the operation quality and effectively realizing and enhancing the continuity of sowing; at the same time, the lateral movement of the movable cutter disc can also reduce the pulling on the ground film and the drip irrigation tape.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizing, film-laying and drip irrigation tape seeders, in particular to a precision seeder for synchronous wide-width intercropping of silage corn and soybeans. Background Art

[0002] With the development of modern agriculture in my country, the breeding industry has gradually shifted to a high-value, high-efficiency, intensive, large-scale, and simplified development model. Silage corn is a major high-quality feed crop widely used in my country. It has the advantages of high biological yield, good palatability, and rich nutrients. However, silage corn has unbalanced nutrients, especially insufficient protein content and low nutritional quality of feed. When feeding dairy cows, it is necessary to add additional high-protein feed such as soybean meal to supplement protein, which greatly increases the feeding cost. The crude protein content in soybeans is relatively high, but the single storage of whole soybeans cannot meet the standards of high-quality silage. Studies have found that the mixed silage of silage corn and soybeans is conducive to the nutrient complementarity between silage raw materials, improving the nutritional value and feeding value of silage. At the same time, mixed silage can reduce processes and reduce costs.

[0003] Intercropping corn with leguminous crops can increase the biological yield and crude protein content of the intercropping system. Through the intercropping mode, corn and soybean mixtures can be harvested and directly used for mixed silage. At present, most seeding machines are designed for single crop sowing. The technical parameters cannot meet the agronomic requirements of the wide intercropping mode of corn and soybeans. In addition, when used for large-scale sowing, there are obvious problems such as low sowing efficiency.

[0004] Prior art CN211721291U discloses a fertilization drip irrigation film laying machine, which includes a soil covering roller, a fertilizer box, a fertilizer plow, a drip irrigation belt frame, a pressure roller and other components. Although a guide plate is provided in the soil covering roller, and the guide plate is connected between the soil covering port and the openings at both ends of the soil covering roller, the soil belt has a certain viscosity and is easy to adhere to the wall of the soil covering roller, resulting in unstable and uneven soil discharge from the middle soil covering port. At the same time, the prior art also has problems such as the drip irrigation belt and the ground film are not cut off smoothly, resulting in low operation quality and poor sowing continuity. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a silage corn and soybean wide-width intercropping precision seeder. Through the design of opposite spiral blades in the soil covering roller device, the blockage of sticky soil at the soil covering port can be reduced, and the soil removal speed in the roller covering port can be accelerated, thereby increasing the amount of soil covering on the membrane surface and achieving stable and uniform soil covering.

[0006] Specifically, the present invention is achieved through the following solutions:

[0007] A wide-width intercropping precision seeder for silage corn and soybeans, comprising a frame, a drip irrigation tape laying device, a film laying device, a soil covering roller device, a film and tape breaking device and a sowing device; the drip irrigation tape laying device and the film laying device are arranged on the front side of the frame, and the soil covering roller device, the film and tape breaking device and the sowing device are arranged in sequence on the rear side of the frame; the soil covering roller device comprises a roller body and a rotating shaft located inside the roller body and coaxially arranged with the roller body; the roller body has openings at both ends, and the two ends of the rotating shaft are respectively rotatably fixed to the openings at both ends; a plurality of fixed spiral blades are arranged on the inner wall of the roller body, and the plurality of fixed spiral blades are arranged from the openings at both ends toward the center of the roller body to form an inward spiral; a plurality of rotating spiral blades are arranged on the rotating shaft, and the plurality of rotating spiral blades are arranged in increasing numbers from the two ends of the rotating shaft to the center of the rotating shaft, and form a spiral opposite to the fixed spiral blades.

[0008] Preferably, the rotating spiral blades are evenly fixed on the rotating shaft by fixing rods;

[0009] Preferably, the blades are arranged in increasing numbers, for example, three rotating spiral blades are arranged on the rotating shaft near both ends of the rotating shaft to form three rotating blades, and four rotating spiral blades are arranged on the rotating shaft near the center of the rotating shaft to form four rotating blades. This design can accelerate the rapid outflow of soil from the covering port of the drum and shorten the stay of the soil in the drum.

[0010] Furthermore, a plurality of soil covering openings are arranged on the drum body; and soil covering plates are arranged at the openings at both ends.

[0011] Preferably, the plurality of soil covering openings include a plurality of arc-shaped openings evenly distributed along the openings at both ends toward the center of the drum body to increase the amount of soil covering on the membrane, thereby overcoming the problem of insufficient soil covering on the membrane and realizing lateral interval soil covering on the membrane, as well as a plurality of openings located at the center of the drum body and evenly distributed along the outer arc of the drum to realize interval soil covering in the center of the membrane.

[0012] Furthermore, a rotating shaft bracket having a hollow tube in the middle is provided at both end openings, and both ends of the rotating shaft pass through the hollow tubes respectively to realize rotational fixation of the rotating shaft relative to the drum body.

[0013] Furthermore, a roller bracket is sleeved on the hollow tube, and the roller body is hinged on the frame through the roller bracket; one end of the rotating shaft extends out of one of the hollow tubes, and a rotating shaft driven bevel gear is provided on one end of the extended rotating shaft, and a roller driving bevel gear is provided on the extended hollow tube; a fixed bevel gear that meshes with the roller driving bevel gear and the rotating shaft driven bevel gear is provided on the roller bracket, and the fixed bevel gear makes the rotating shaft driven bevel gear and the roller driving bevel gear rotate in opposite directions, thereby realizing that the rotating shaft and the roller body rotate in opposite directions.

[0014] Preferably, at least the extended rotating shaft and the extended hollow tube are rotated relative to each other via a bearing, thereby reducing friction.

[0015] The present invention also cuts off the ground film and the drip irrigation tape through the joint action of the film and tape breaking device and the soil covering roller device. The ground film and the drip irrigation tape used for subsequent laying can be immediately fixed at the lower edge of the soil covering roller, thereby improving the work quality and effectively realizing and enhancing the continuity of sowing; at the same time, the lateral movement of the movable knife disc can also reduce the pulling on the ground film and the drip irrigation tape.

[0016] Specifically, further, the film-breaking and belt-breaking device includes a cutting component, a film-breaking and belt-breaking support frame, and a pushing component; the film-breaking and belt-breaking device is fixed to the frame through the film-breaking and belt-breaking support frame; the film-breaking and belt-breaking support frame includes a support frame A close to the soil-covering roller device and a support frame B away from the soil-covering roller device; the cutting component is hinged at the bottom of the support frame A; one end of the pushing component is hinged at the top of the support frame B, and the other end is hinged to the cutting component.

[0017] Preferably, the pushing component is a hydraulic push rod.

[0018] Furthermore, the cutting component includes a cutter disc fixing frame, two movable cutter discs arranged in parallel on the cutter disc fixing frame, and a plurality of blades fixedly arranged at the lower ends of the two movable cutter discs.

[0019] Furthermore, each of the movable cutter discs is provided with a plurality of horizontal through slots in parallel, and the cutter disc fixing frame is provided with a horizontal limit rod corresponding to each of the horizontal through slots, and the horizontal limit rod passes through the horizontal through slots and fixes the movable cutter disc to the cutter disc fixing frame by a limit nut. The horizontal limit rod limits the horizontal movement of the movable cutter disc within the range of the horizontal through slots.

[0020] Furthermore, two telescopic links parallel to each other are arranged between the support frame A and the cutter disc fixing frame, one ends of the two telescopic links are respectively fixed to the cutter disc fixing frame, and the other ends are respectively hinged to the support frame A; fixed slide rails parallel to the telescopic links are fixed to the two telescopic links, sleeves that can slide along the fixed slide rails are arranged on the fixed slide rails, and cutter disc links are hinged on the sleeves, and one end of each cutter disc link is fixedly connected to a movable cutter disc; a limit spring is also sleeved on the fixed slide rail, and after the sleeve contacts the limit spring, the two cutter disc links respectively drive the two movable cutter discs to move in opposite horizontal directions.

[0021] Furthermore, a hinge rod is also provided on the cutter disc fixing frame, and the pushing component drives the cutter disc fixing frame to move up and down in an inclined manner toward the soil covering roller device by being hinged to the hinge rod, and at the same time drives the two movable cutter discs to move closer and apart. When the pushing component pushes the cutter disc fixing frame to move downward, the two movable cutter discs drive the blades thereon to separate to both sides, thereby cutting off the ground film and the drip irrigation tape, and the blades continue to push the cut ground film and the drip irrigation tape forward and press them against the lower edge of the roller body, facilitating subsequent continuous operations.

[0022] Furthermore, the sowing device includes a corn sowing unit and a soybean sowing unit. Beneficial Effects

[0023] 1. The present invention can reduce the blockage of sticky soil at the soil covering port and accelerate the removal speed of soil in the soil covering port of the roller through the design of opposite spiral blades in the soil covering roller device, thereby increasing the amount of soil covering the membrane surface and achieving stable and uniform soil covering; in particular, further, the rotating spiral blades are arranged in increasing number from the two ends of the rotating shaft to the center of the rotating shaft, which can accelerate the movement of soil along the center of the roller.

[0024] 2. The several soil covering openings of the present invention may include several arc-shaped openings evenly distributed along the openings at both ends toward the center of the drum body, which can not only increase the amount of soil covering on the membrane, but also realize the lateral spacing of soil covering on the membrane; the several soil covering openings may also include several openings located at the center of the drum body and evenly distributed along the outer arc of the drum to realize the spacing of soil covering in the center of the membrane.

[0025] 3. The present invention also cuts off the ground film and the drip irrigation tape through the joint action of the film and tape breaking device and the soil covering roller device. The ground film and drip irrigation tape used for subsequent laying can be immediately fixed at the lower edge of the soil covering roller, thereby improving the work quality and effectively realizing and enhancing the continuity of sowing; at the same time, the lateral movement of the mobile knife disc can also reduce the pulling on the ground film and the drip irrigation tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A side view of an embodiment of the present invention;

[0027] Figure 2 A diagram of a soil covering roller device according to an embodiment of the present invention (partial perspective);

[0028] Figure 3 This is a distribution diagram of fixed spiral blades inside the soil covering roller device of an embodiment of the present invention;

[0029] Figure 4 This is a distribution diagram of the rotating spiral blades inside the soil covering roller device of an embodiment of the present invention;

[0030] Figure 5 A partial enlarged view of the soil covering roller device according to an embodiment of the present invention;

[0031] Figure 6 A diagram of a film and tape breaking device according to an embodiment of the present invention;

[0032] Figure 7 2 is a diagram of a cutter disc fixing frame according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The content of the present invention is further described below in conjunction with the accompanying drawings, embodiments and comparative examples, but the scope of protection claimed by the present invention is not limited to the following embodiments.

[0034] like Figures 1 to 7 As shown, this embodiment provides a silage corn and soybean wide intercropping precision seeder, including a frame 1, a drip irrigation tape laying device 2, a film laying device 3, a soil covering roller device 4, a film and tape breaking device 5 and a sowing device 6; the drip irrigation tape laying device 2 and the film laying device 3 are arranged on the front side of the frame, and the soil covering roller device 4, the film and tape breaking device 5 and the sowing device 6 are arranged on the rear side of the frame 1 in sequence; the soil covering roller device 4 includes a roller body 4-1 and a rotating shaft 4-2 located inside the roller body 4-1 and coaxially arranged with the roller body 4-1; the roller body 4-1 has openings 4-1-1 at both ends, The two ends of the rotating shaft 4-2 are respectively rotatably fixed to the openings 4-1-1 at both ends; a plurality of fixed spiral blades 4-1-2 are arranged on the inner wall of the drum body 4-1, and the plurality of fixed spiral blades 4-1-2 are arranged from the openings 4-1-1 at both ends toward the center of the drum body 4-1 to form an inward spiral; a plurality of rotating spiral blades 4-2-1 are arranged on the rotating shaft 4-2, and the plurality of rotating spiral blades 4-2-1 are arranged in increasing numbers from the two ends of the rotating shaft 4-2 toward the center of the rotating shaft 4-2, and form a spiral opposite to the fixed spiral blades 4-1-2.

[0035] The rotating spiral blades 4-2-1 are evenly fixed on the rotating shaft 4-2 by a fixing rod 4-2-2; three rotating spiral blades 4-2-1 are arranged on the rotating shaft 4-2 near the two ends of the rotating shaft 4-2 to form three rotating blades, and four rotating spiral blades 4-2-1 are arranged on the rotating shaft 4-2 near the center of the rotating shaft 4-2 to form four rotating blades. This design can accelerate the movement of soil along the center of the drum.

[0036] The drum body 4-1 is provided with a plurality of soil covering openings 4-1-3; the openings 4-1-1 at both ends are provided with soil covering plates 4-1-4 fixed to the frame 1. The plurality of soil covering openings 4-1-3 include a plurality of arc-shaped openings 4-1-3-1 evenly distributed along the openings 4-1-1 at both ends toward the center of the drum body 4-1 to increase the amount of soil covering on the membrane, thereby overcoming the problem of insufficient soil covering on the membrane, and at the same time, realizing transverse interval soil covering on the membrane; the plurality of soil covering openings 4-1-3 also include a plurality of openings 4-1-3-2 evenly distributed along the outer arc of the drum at the center of the drum body 4-1 to realize interval soil covering in the center of the membrane.

[0037] The two end openings 4-1-1 are both provided with a rotating shaft bracket 4-3 with a hollow tube 4-3-1 in the middle, and the two ends of the rotating shaft 4-2 pass through the hollow tube 4-3-1 respectively to realize the rotation and fixation of the rotating shaft 4-2 relative to the drum body 4-1.

[0038] The roller bracket 4-4 is sleeved on the hollow tube 4-3-1, and the roller body 4-1 is hinged on the frame 1 through the roller bracket 4-4; one end of the rotating shaft 4-2 extends out of one of the hollow tubes 4-3-1, and a rotating shaft driven bevel gear 4-6 is provided on one end of the extended rotating shaft 4-2, and a roller driving bevel gear 4-7 is provided on the extended hollow tube 4-3-1; the roller bracket 4-4 is provided with a fixed bevel gear 4-6 that meshes with the roller driving bevel gear 4-7 and the rotating shaft driven bevel gear 4-6 -8; Specifically, the extended rotating shaft 4-2 realizes mutual rotation with the extended hollow tube 4-3-1 through a bearing (not shown in the figure); the drum body 4-1 contacts the ground and rolls as the seeder moves forward, thereby driving the drum active bevel gear 4-7 to rotate, and the drum active bevel gear 4-7 drives the rotating shaft driven bevel gear 4-6 to rotate in the opposite direction to the drum active bevel gear 4-7 through the fixed bevel gear 4-8, thereby realizing the rotation of the rotating shaft 4-2 and the drum body 4-1 in opposite directions.

[0039] This embodiment also cuts off the ground film and the drip irrigation tape through the joint action of the film and tape breaking device 5 and the soil covering roller device 4. The ground film and the drip irrigation tape used for subsequent laying can be immediately fixed at the lower edge of the soil covering roller, thereby improving the work quality and effectively realizing and enhancing the continuity of sowing; at the same time, the lateral movement of the mobile knife disc can also reduce the pulling on the ground film and the drip irrigation tape.

[0040] Specifically, the film-breaking and belt-breaking device 5 includes a cutting component, a film-breaking and belt-breaking support frame, and a pushing component 5-1; the film-breaking and belt-breaking device 5 is fixed to the frame 1 through the film-breaking and belt-breaking support frame; the film-breaking and belt-breaking support frame includes a support frame A 5-2 close to the soil-covering roller device 4 and a support frame B 5-3 away from the soil-covering roller device; the cutting component is hinged at the bottom of the support frame A 5-2; one end of the pushing component 5-1 is hinged at the top of the support frame B 5-3, and the other end is hinged to the cutting component.

[0041] The cutting component includes a cutter disc fixing frame 5-4, two movable cutter discs 5-5 arranged in parallel on the cutter disc fixing frame 5-4, and a plurality of blades 5-6 fixedly arranged at the lower ends of the two movable cutter discs 5-5.

[0042] Each of the movable cutter discs 5-5 is provided with a plurality of horizontal through slots 5-5-1 in parallel, and a horizontal limiting rod 5-4-1 is provided on the cutter disc fixing frame 5-4 corresponding to each of the horizontal through slots 5-5-1. After the horizontal limiting rod 5-4-1 passes through the horizontal through slots 5-5-1, the movable cutter disc 5-5 is fixed to the cutter disc fixing frame 5-4 by a limiting nut 5-4-2. The horizontal limiting rod 5-4-1 limits the horizontal movement of the movable cutter disc 5-5 within the range of the horizontal through slots 5-5-1.

[0043] Two telescopic links 5-7 parallel to each other are arranged between the support frame A 5-2 and the cutter disc fixing frame 5-4, one ends of the two telescopic links 5-7 are respectively fixed to the cutter disc fixing frame 5-4, and the other ends are respectively hinged to the support frame A5-2; fixed slide rails 5-8 parallel to the telescopic links 5-7 are fixed to the two telescopic links 5-7, the fixed slide rails 5-8 are respectively provided with sleeves 5-8-1 which can slide along the fixed slide rails 5-8, and cutter disc links 5-9 are hinged to the sleeves 5-8-1, and one end of each cutter disc link 5-9 is fixedly connected to a movable cutter disc 5-5; a limit spring 5-8-2 is also sleeved on the fixed slide rail 5-8, and after the sleeve 5-8-1 contacts the limit spring 5-8-2, the two cutter disc links 5-9 respectively drive the two movable cutter discs 5-5 to move in opposite horizontal directions.

[0044] The knife disc fixing frame 5-4 is also provided with a hinge rod 5-4-3. The pushing component 5-1 drives the knife disc fixing frame 5-4 to move up and down in a tilted manner toward the soil covering roller device 4 by being hinged with the hinge rod 5-4-3, and drives the two movable knife discs 5-5 to move together and apart. When the pushing component 5-1 pushes the knife disc fixing frame 5-4 to move downward, the two movable knife discs 5-5 drive the blades 5-6 thereon to separate to both sides, thereby cutting off the ground film and the drip irrigation tape. The blades 5-6 continue to push the cut ground film and the drip irrigation tape forward and press them against the lower edge of the roller body 4-1, facilitating subsequent continuous operations.

[0045] The sowing device 6 includes a corn sowing unit and a soybean sowing unit. The sowing units are symmetrically arranged in the manner of four rows of corn and two rows of soybean, and 12 rows of sowing can be completed at one time.

[0046] This embodiment also includes a fertilizer box 7, a three-point suspension frame 8, a furrow opener 9, a power drive system 10, a scattering device 11, and a suppression device 12.

[0047] The fertilizer box 7 is fixed above the frame 1 through a fertilizer box support frame, the three-point suspension frame 8 is fixed to the front end of the frame 1 to dock with the agricultural machinery, the furrow opener 9 is fixed to the front end of the frame 1, the fertilizer box 7 is connected to the furrow opener 9 through a fertilizer pipe, the power drive system 10 is a chain drive system, the breaking device 11 is fixed on the frame 1 on the rear side of the furrow opener 9, and the suppression device 12 is fixed on the frame 1 on the rear side of the sowing device 6.

[0048] The film laying device 3 includes a ground film placement rack 3-1 arranged above the frame 1 and a film laying furrow opener 3-2, a film spreading roller 3-3, a film pressing wheel 3-4, a film pressing wheel adjuster 3-5 and a film edge covering device 3-6 which are sequentially arranged on the frame 1 on the rear side of the breaking device 10.

[0049] The drip irrigation tape laying device 2 comprises a drip irrigation tape wheel disc placement rack 2-1 arranged on the upper side of the frame 1 and the rear side of the fertilizer box 7 and a drip irrigation tape roller pulley assembly 2-2 arranged at the front end of the film spreading roller 3-3.

[0050] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A wide-width intercropping precision seeder for silage corn and soybeans, comprising a frame, a drip irrigation tape laying device, a film laying device, a soil covering roller device, a film and tape breaking device, and a sowing device; the drip irrigation tape laying device and the film laying device are arranged on the front side of the frame, and the soil covering roller device, the film and tape breaking device, and the sowing device are arranged on the rear side of the frame in sequence; characterized in that: The soil covering roller device comprises a roller body and a rotating shaft located inside the roller body and arranged coaxially with the roller body; the roller body has openings at both ends, and the two ends of the rotating shaft are respectively rotatably fixed to the openings at both ends; a plurality of fixed spiral blades are arranged on the inner wall of the roller body, and the plurality of fixed spiral blades are arranged from the openings at both ends toward the center of the roller body to form an inward spiral; a plurality of rotating spiral blades are arranged on the rotating shaft, and the plurality of rotating spiral blades are arranged in increasing numbers from the two ends of the rotating shaft toward the center of the rotating shaft, and form a spiral opposite to the fixed spiral blades; The film-breaking and belt-breaking device comprises a cutting component, a film-breaking and belt-breaking support frame, and a pushing component; the film-breaking and belt-breaking device is fixed to the frame through the film-breaking and belt-breaking support frame; the film-breaking and belt-breaking support frame comprises a support frame A close to the soil-covering roller device and a support frame B far away from the soil-covering roller device; the cutting component is hinged below the support frame A; one end of the pushing component is hinged above the support frame B, and the other end is hinged to the cutting component; The cutting component comprises a cutter disc fixing frame, two movable cutter discs arranged in parallel on the cutter disc fixing frame, and a plurality of blades fixedly arranged at the lower ends of the two movable cutter discs.

2. The silage corn and soybean wide intercropping precision seeder according to claim 1, characterized in that: A plurality of soil covering openings are arranged on the drum body; soil covering plates are arranged at the openings at both ends.

3. The silage corn and soybean wide intercropping precision seeder according to claim 1, characterized in that: The openings at both ends are each provided with a rotating shaft bracket having a hollow tube in the middle, and the two ends of the rotating shaft respectively pass through the hollow tube to realize the rotation and fixation of the rotating shaft relative to the drum body.

4. The silage corn and soybean wide intercropping precision seeder according to claim 3, characterized in that: The roller bracket is sleeved on the hollow tube, and the roller body is hinged on the frame through the roller bracket; one end of the rotating shaft extends out of one of the hollow tubes, and a rotating shaft driven bevel gear is provided on one end of the extended rotating shaft, and a roller driving bevel gear is provided on the extended hollow tube; a fixed bevel gear meshing with the roller driving bevel gear and the rotating shaft driven bevel gear is provided on the roller bracket, and the fixed bevel gear makes the rotating shaft driven bevel gear and the roller driving bevel gear rotate in opposite directions, thereby realizing that the rotating shaft and the roller body rotate in opposite directions.

5. The silage corn and soybean wide intercropping precision seeder according to claim 1, characterized in that: Each of the movable cutter discs is provided with a plurality of horizontal through slots in parallel, and a horizontal limiting rod is provided on the cutter disc fixing frame corresponding to each of the horizontal through slots. After the horizontal limiting rod passes through the horizontal through slots, the movable cutter disc is fixed to the cutter disc fixing frame by a limiting nut.

6. The silage corn and soybean wide intercropping precision seeder according to claim 5, characterized in that: Two telescopic links parallel to each other are arranged between the support frame A and the cutter disc fixing frame, one ends of the two telescopic links are respectively fixed to the cutter disc fixing frame, and the other ends are respectively hinged to the support frame A; fixed slide rails parallel to the telescopic links are fixed to the two telescopic links, sleeves which can slide along the fixed slide rails are arranged on the fixed slide rails, and cutter disc links are hinged on the sleeves, and one end of each cutter disc link is fixedly connected to a movable cutter disc; a limit spring is also sleeved on the fixed slide rail, and after the sleeve contacts the limit spring, the two cutter disc links respectively drive the two movable cutter discs to move in opposite horizontal directions.

7. The silage corn and soybean wide intercropping precision seeder according to claim 6, characterized in that: The cutter disc fixing frame is also provided with an articulated rod, and the pushing component drives the cutter disc fixing frame to move up and down in an inclined manner toward the soil covering roller device by being hinged with the articulated rod, and at the same time drives the two movable cutter discs to move closer and apart.

8. The silage corn and soybean wide intercropping precision seeder according to claim 1, characterized in that: The sowing device comprises a corn sowing unit and a soybean sowing unit.

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