A seed rope laying and automated breakage seeding unit

Abstract

The present application relates to the field of agricultural seeding technology, and particularly to a seed rope laying and automatic cutting seeding unit, comprising a frame, a follow-up type line outlet wheel assembly, a floating profiling connection assembly, a clamping linkage assembly and an automatic rope cutting assembly; the frame is provided with a seed rope supply assembly; the follow-up type line outlet wheel assembly comprises a line outlet wheel group with a rim provided with a line guide groove and a rim spacing adjusting mechanism for adjusting the spacing between the rims, the lower edge of the line outlet wheel group is in contact with the ridge surface and rolls to continuously guide the seed rope out; the floating profiling connection assembly allows the line outlet wheel group to float up and down through a floating swing arm; the clamping linkage assembly is provided with an energy storage mechanism and an adjusting mechanism, the energy storage mechanism stores energy when the floating swing arm is working and triggers the spacing adjusting mechanism and the adjusting mechanism to change the spacing between the line guide grooves and the groove depth, so as to realize self-adaptive change of the seed rope constraint state; the automatic rope cutting assembly cuts the seed rope through a clamping mechanism driving a cutter mechanism. The present application can improve the stability of seed rope laying and the automatic level of rope cutting, and is suitable for different ground conditions.

Description

Technical Field

[0001] This invention relates to the field of agricultural sowing technology, specifically to a sowing unit that lays seed ropes and automatically cuts them off. Background Technology

[0002] Rapeseed is an important oilseed crop in my country. Traditional broadcasting or row sowing methods are susceptible to seed fluctuations, uneven seed spacing, and even missing seedlings due to the small seed size and poor seed mobility of the seeds, which are easily affected by machinery vibration and soil conditions. While manual seedling raising and transplanting can control the position of individual plants, it is labor-intensive and inefficient, making it difficult to meet the needs of large-scale production. Precision seeding technology using seed ropes encapsulates seeds at predetermined intervals in biodegradable ropes, which are then laid in the seed furrows in the field. This reduces the difficulty of directly measuring loose seeds during field sowing, facilitating quantitative, fixed-distance, and orderly sowing.

[0003] Most existing seed rope seeding devices mount the seed rope coil on the frame, relying on passive traction or free unwinding to complete the rope output. However, with changes in the coil diameter, machine speed fluctuations, and changes in the frictional resistance of the guide rope path, the seed rope tension is difficult to control stably. When the tension is too low, rope loosening and piling occur frequently, while when the tension is too high, the seed rope is prone to stretching or even breaking, compromising the particle spacing accuracy.

[0004] Meanwhile, the guide rope components are mostly installed at a fixed height, which cannot adaptively adjust to the undulations of the ridge surface. When encountering a protrusion, the seed rope is suspended in mid-air, and when encountering a depression, the seed rope is suspended in mid-air, resulting in inconsistent sowing depth and affecting the uniformity of seedling emergence. Although some devices are equipped with a press wheel to assist the guide rope, the connection between the wheel and the frame is simple, and the elasticity is limited, making it difficult to achieve the integrated functions of continuous line output, conformal to the terrain, and lateral positioning.

[0005] In addition, the seed rope needs to be cut when turning at the edge of the field or at the end of single-row operation. Current methods mostly rely on manual hand-held shears or cutters to complete this, with the operator close to the cutting area of ​​the machine, posing safety hazards and resulting in low efficiency. A few devices use a single-blade fixed cutting method, but the seed rope, in a slack state, is prone to slippage and displacement under the force of the cutter, making it difficult to straighten. This often results in problems such as incomplete cutting, rough cuts, or the rope end retracting into the guide opening, affecting the start of rope laying for the next row. Summary of the Invention

[0006] The purpose of this invention is to provide a seeding unit with seed rope laying and automated rope cutting to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A seeding unit with seed rope laying and automated rope cutting, comprising: A frame, the frame including a seed rope supply assembly for supplying seed ropes to seeding units; A follow-up wire feeder assembly includes a wire feeder group and a spacing adjustment mechanism. The rim of the wire feeder group is provided with a rope guide groove. The lower edge of the wire feeder group is used to contact the surface of the ridge or seed furrow adjacent to the ground. The seed rope is located in the rope guide groove and is continuously fed out by rolling with the help of the wire feeder group. The spacing adjustment mechanism can slide relative to the wire feeder group along the axial direction. The spacing adjustment mechanism is used to change the spacing between the rims on both sides of the rope guide groove. A floating contouring connection assembly is provided, which connects the frame and the follower-type cable delivery wheel assembly respectively. The floating contouring connection assembly includes a floating swing arm and an elastic loading mechanism. The floating swing arm allows the follower-type cable delivery wheel assembly to float up and down relative to the frame, and the elastic loading mechanism is used to keep the cable delivery wheel assembly in contact with the ground. A clamping linkage assembly includes an energy storage mechanism and an adjustment mechanism. The energy storage mechanism is disposed on the floating swing arm. The energy storage mechanism is used to store energy when the floating swing arm is working and to trigger the opening of the spacing adjustment mechanism and the adjustment mechanism when the elastic loading mechanism is working. The adjustment mechanism is used to adjust the groove depth of the guide rope groove to realize the adaptive change of the guide rope groove to the constraint state of the seed rope. An automatic rope-cutting assembly includes a clamping mechanism and a cutting mechanism, wherein the clamping mechanism is used to drive the cutting mechanism to cut the seed rope.

[0008] Preferably, the frame includes a sliding plate and a fixed frame, wherein the sliding plate is connected to the fixed frame.

[0009] Preferably, the seed rope supply assembly includes a rope reel, a mounting bracket, and a seed metering tube. The rope reel is connected to the fixed frame, and the seed rope is wound and stored on the rope reel. The mounting bracket is provided at the bottom of the fixed frame and is used to install the seed metering tube. One end of the seed rope passes through the seed metering tube and is connected to the rope guide groove.

[0010] Preferably, the lead-out wheel assembly includes two symmetrically arranged wheels, with the rope guide groove formed between the two wheels. The spacing adjustment mechanism includes a pneumatic push rod, with its two ends connected to different wheels. The pneumatic push rod is used to change the distance between the two wheels, thereby altering the spacing of the rope guide groove.

[0011] Preferably, the floating swing arm includes a swing spring and a pressure roller swing frame, the pressure roller swing frame is hinged to the fixed frame, the swing spring is used to drive the pressure roller swing frame to reset, the elastic loading mechanism is disposed on the pressure roller swing frame, and the elastic loading mechanism is used to keep the cable outlet wheel assembly in contact with the ground.

[0012] Preferably, the elastic loading mechanism includes guide rods, compression springs, and pressure roller mounting plates. The guide rods are symmetrically connected to both sides of the pressure roller swing frame. The other end of each guide rod is inserted into the pressure roller mounting plate. The compression spring is sleeved on the outside of the guide rod. The cable exit wheel assembly is mounted on the pressure roller mounting plate.

[0013] Preferably, the energy storage mechanism includes a movable cylinder, a piston rod, and an air tank. The movable cylinder is connected to the fixed frame, the piston rod is movably connected to the cylinder, one end of the piston rod is connected to the pressure roller swing frame, the movable cylinder is connected to the air tank through a pipe, and the air tank is disposed on the pressure roller mounting plate.

[0014] Preferably, the outlet of the gas tank is connected to a rotary sealing joint, the adjusting mechanism includes an annular air bladder and a pressure relief valve, the rotary sealing joint is connected to a three-way valve, the exhaust end of the three-way valve is connected to the adjusting push rod and the air bladder respectively through a solenoid valve, the air bladder is disposed in the guide rope groove, and the air bladder is connected to the pressure relief valve.

[0015] Preferably, the sliding plate has symmetrically formed sliding grooves. The clamping mechanism includes a clamping cylinder, a motion mounting plate, a horizontal slider, a cam follower, and a connecting rod. The clamping cylinder is disposed on the sliding plate and is used to drive the motion mounting plate to move along a linear guide rail. The horizontal sliders are symmetrically arranged on both sides of the motion mounting plate. The cam follower is disposed on the horizontal sliders, and the movable end of the cam follower is connected to the sliding groove. When the clamping cylinder drives the motion mounting plate to rise and fall, the cam follower will drive the horizontal sliders to move along the direction of the sliding groove. Each horizontal slider is connected to the connecting rod, and the connecting rod is used to install the cutting mechanism.

[0016] Preferably, the cutting mechanism includes a horizontal cutter and a vertical cutter. The horizontal cutter is connected to the connecting rod, and the vertical cutter is connected to the horizontal cutter. Both the horizontal cutter and the vertical cutter are provided with a labyrinth groove. When the horizontal cutter or the vertical cutter on both sides closes to each other, the seed rope clamped inside the labyrinth groove will be cut off.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention sets up a line-out wheel assembly with guide rope grooves on the wheel rim, so that the lower edge of the line-out wheel assembly contacts the surface of the ridge or planting furrow and the seed rope is continuously discharged by rolling. This makes the line-out speed directly related to the forward displacement of the implement. With the help of the spacing adjustment mechanism to adjust the distance between the wheel rims on both sides of the guide rope groove, it can adapt to seed ropes of different diameters and avoid slack or stretching. The floating swing arm in the floating contour connection assembly allows the line-out wheel assembly to float up and down relative to the frame. The elastic loading mechanism keeps the line-out wheel assembly at a constant ground pressure, thereby achieving contouring on the ground and reducing the probability of overhead movement. The energy storage mechanism in the clamping linkage assembly stores energy during the operation of the floating swing arm and triggers the spacing adjustment mechanism and adjustment mechanism when the elastic loading mechanism is working, changing the spacing and depth of the guide rope groove, and realizing adaptive changes in the constraint state of the seed rope. The clamping mechanism of the automatic rope cutting assembly drives the cutting mechanism to cut the seed rope, ensuring a neat and reliable cut. This comprehensively improves the stability of seed rope laying, contouring adaptability and the level of automation in rope cutting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the position of the present invention on a rotary tiller; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram showing the positional structure of the sliding plate, linear guide rail, and motion mounting plate of the present invention; Figure 4 This is a schematic diagram of the horizontal cutter cutting the seed rope according to the present invention; Figure 5 This is a schematic diagram of the vertical cutter cutting the seed rope according to the present invention; Figure 6 This is a schematic diagram of the gas tank and rotary sealing joint structure of the present invention; Figure 7 This is a schematic diagram of the clamping mechanism of the present invention; Figure 8 This is a schematic diagram of the connection structure of the movable cylinder, air tank, and rotary sealing joint of the present invention. Figure 9 This is a schematic diagram of the connection structure of the swing spring, movable cylinder and piston rod of the present invention; Figure 10 This is a schematic diagram showing the position and structure of the wheel body, guide rope groove, and annular airbag of the present invention; Figure 11 This is a schematic diagram showing the position and structure of the wheel body and pressure relief valve of the present invention; Figure 12 This is a schematic diagram showing the positions of the pneumatic push rod and the annular airbag of the present invention; Figure 13 This is a schematic diagram of the connection structure between the annular airbag and the pressure relief valve of the present invention; Figure 14This is a schematic diagram of the connection structure of the pneumatic push rod, rotary sealing joint and three-way valve of the present invention.

[0019] In the diagram: 1. Sliding plate, 2. Fixed frame, 3. Rope reel, 4. Mounting bracket, 5. Seeding tube, 6. Wheel body, 7. Rope guide groove, 8. Pneumatic push rod, 801. Exhaust valve, 9. Swing spring, 10. Pressure wheel swing frame, 11. Guide rod, 12. Compression spring, 13. Pressure wheel mounting plate, 14. Movable cylinder, 15. Piston rod, 16. Air tank, 17. Rotary sealing joint, 18. Three-way valve, 1901. First solenoid valve, 1902. Second solenoid valve, 20. Annular airbag, 21. Pressure relief valve, 22. Sliding groove, 23. Clamping cylinder, 2301. Linear guide rail, 24. Motion mounting plate, 25. Horizontal slider, 26. Cam follower, 27. Connecting rod, 28. Horizontal cutter, 29. Vertical cutter, 30. Labyrinth groove, 100. Rotary tiller, 200. Seeding rope. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-14 The present invention provides a technical solution: A seeding unit with seed rope laying and automated rope cutting, as per the instruction manual. Figure 1 Included with instruction manual Figure 2 As shown, seed rope laying and automatic rope cutting seeding units are evenly spaced on the rear side of rotary tiller 100. Each seed rope laying and automatic rope cutting seeding unit includes a frame, and the frame includes a seed rope supply component. The frame is fixedly connected to the crossbeam of the seeder and provides an installation base for the seed rope supply component, the floating contour connection component and the automatic rope cutting component. The seed rope supply component is used to supply seed rope 200 to the seeding unit.

[0022] The follow-up lead-out wheel assembly includes a lead-out wheel group and a spacing adjustment mechanism. The lead-out wheel group has a guide groove 7 on its rim. The lower edge of the lead-out wheel group is used to contact the surface of the ridge or the adjacent ground of the seed furrow. During the rolling process of the lead-out wheel group in contact with the ground, the seed rope 200 is continuously pulled out by the lateral limiting of the guide groove 7 and the friction generated by the rolling of the wheel body. This avoids the loosening or stretching phenomenon caused by changes in the winding diameter and resistance fluctuations under the free unwinding of the reel or passive traction method. The spacing adjustment mechanism can slide relative to the lead-out wheel group along the axial direction. The spacing adjustment mechanism is used to change the spacing between the rims on both sides of the guide groove 7. By changing the spacing between the rims on both sides of the guide groove 7, the spacing adjustment mechanism can adapt to seed ropes 200 of different diameters or adjust the lateral clamping degree of the seed rope 200, preventing the seed rope 200 from coming out of the guide groove 7.

[0023] The floating contour connection assembly connects the frame and the follower-type lead-out wheel assembly respectively. The floating contour connection assembly includes a floating swing arm and an elastic loading mechanism. The floating swing arm allows the follower-type lead-out wheel assembly to float up and down relative to the frame. The elastic loading mechanism is used to keep the lead-out wheel assembly ground pressure. Through the swing freedom of the floating swing arm and the preload of the elastic loading mechanism, the lead-out wheel assembly can compensate for the up and down position with the undulation of the ground surface, thereby ensuring that the lower edge of the wheel body always keeps in contact with the surface of the ridge or seed furrow, reducing the probability of the seed rope 200 being suspended or deviating from the seed furrow due to the fixed height of the guide rope opening.

[0024] The clamping linkage assembly includes an energy storage mechanism and an adjustment mechanism. The energy storage mechanism is located on the floating swing arm. The energy storage mechanism is used to store energy when the floating swing arm is working and to trigger the opening of the spacing adjustment mechanism and the adjustment mechanism when the elastic loading mechanism is working. This drives the spacing adjustment mechanism and the adjustment mechanism to work together, so that the width and depth of the guide rope groove 7 can be adaptively adjusted according to the grounding state and the tension change of the seed rope 200. This allows the seed rope 200 to obtain a suitable constraint force under different working conditions. The adjustment mechanism is used to adjust the depth of the guide rope groove 7 to achieve adaptive changes in the constraint state of the seed rope 200.

[0025] The automatic rope-cutting assembly includes a clamping mechanism and a cutting mechanism. The clamping mechanism is used to drive the cutting mechanism to cut the seed rope 200.

[0026] The frame includes a sliding plate 1 and a fixed frame 2. The sliding plate 1 is connected to the fixed frame 2, which is a rigid frame structure used to fix the seed rope supply assembly and the floating contour connection assembly, and serves as a transitional component connecting the whole machine to the seeder lifting arm or suspension frame. The sliding plate 1 is fixedly installed on the side or rear of the fixed frame 2, used to install the clamping mechanism and cutting mechanism of the automatic rope cutting assembly, and to provide guiding support for the clamping mechanism.

[0027] The seed rope supply assembly includes a rope reel 3, a mounting bracket 4, and a seed metering tube 5. The rope reel 3 is connected to the fixed frame 2 and is rotatably mounted on the upper part of the fixed frame 2 via a central rotating shaft. The rotation axis of the rope reel 3 is perpendicular to the forward direction of the seeder. The seed rope 200 is wound and stored in the rope reel 3. The mounting bracket 4 is fixedly connected to the lower part of the fixed frame 2. The seed metering tube 5 is fixed on the mounting bracket 4. The inlet end of the seed metering tube 5 faces the direction of the rope reel 3, and the outlet end faces the direction of the guide groove 7 of the follow-up wire wheel assembly. The seed metering tube 5 is used to guide and protect the seed rope 200 drawn from the rope reel 3, preventing the seed rope 200 from getting tangled or rubbing against other parts of the frame during the conveying process. After being released from the rope reel 3, the seed rope 200 passes through the inner hole of the seed metering tube 5, then extends out from the outlet end of the seed metering tube 5 and is introduced into the guide groove 7. The mounting bracket 4 is used to install the seed metering tube 5. One end of the seed rope 200 passes through the seed metering tube 5 and is connected to the guide groove 7.

[0028] The cable reel assembly includes two symmetrically arranged reels 6, each rotatably mounted on two coaxial short shafts via bearings. A cable guide groove 7 is formed between the two reels 6. The spacing adjustment mechanism includes a pneumatic push rod 8. The axes of the two reels 6 coincide and are arranged opposite each other. Annular grooves are provided on the outer circumference of each reel 6 near the opposite edge. The annular grooves of the two reels 6 are arranged opposite each other and together form the cable guide groove 7. The pneumatic push rod 8 is positioned between the two reels 6 along their axial direction. One end of the pneumatic push rod 8 is fixedly connected to the inner end face of one reel 6, and the other end is fixedly connected to the inner end face of the other reel 6. The extension and retraction of the pneumatic push rod 8 directly causes the two reels 6 to move closer or further apart axially, thereby changing the spacing between the rims on both sides of the cable guide groove 7 to accommodate different diameter seed cables 200 or to adjust the clamping force on the seed cable 200. Here, it is assumed that the diameter of the seed cable 200 is D. Under normal working conditions, the groove width should be within the range of [D+1mm, D+2mm] (with a slight lateral gap in the groove for the seed rope 200, suitable for flat surfaces, low tension of the seed rope 200, or situations requiring rapid rope release, ensuring smooth rope delivery and preventing overheating damage). When the seed rope 200 is clamped, the groove width should be within the range of [D+0.1mm, D+0.5mm]. With this groove width, the wheel rim uses the elastic deformation of the annular airbag 20 to lightly press the seed rope 200, providing sufficient traction friction (while preventing the wheel rim from squeezing and damaging the seed rope 200), preventing the seed rope 200 from slipping out of the groove. When the wheel 6 floats, the pneumatic push rod 8 drives the wheels to move closer together (i.e., the pneumatic push rod 8 shortens by opening the exhaust valve 801), while simultaneously inflating the annular airbag 20, thereby reducing the effective groove depth of the guide rope groove 7 and increasing the constraint force on the seed rope 200.

[0029] The floating swing arm includes a swing spring 9 and a pressure roller swing frame 10. The pressure roller swing frame 10 is hinged to the lower part of the fixed frame 2 via a hinge shaft. The axis of the hinge shaft is perpendicular to the forward direction of the seeder. The pressure roller swing frame 10 can swing up and down in a vertical plane around the hinge shaft. The swing spring 9 is used to drive the pressure roller swing frame 10 to reset, so that the pressure roller swing frame 10 can automatically return to its initial position after passing over the ground protrusion. An elastic loading mechanism is provided on the pressure roller swing frame 10. The elastic loading mechanism is installed at the swing end of the pressure roller swing frame 10. The lead-out wheel assembly is suspended below the pressure roller swing frame 10 through the elastic loading mechanism. The elastic loading mechanism applies a downward preload to the lead-out wheel assembly to ensure that the lead-out wheel assembly maintains effective contact with the ground surface.

[0030] The elastic loading mechanism includes guide rods 11, compression springs 12, and pressure roller mounting plates 13. Guide rods 11 are symmetrically connected to both sides of the pressure roller swing frame 10. The upper end of the guide rod 11 is fixedly connected to the swing end of the pressure roller swing frame 10, and the lower end of the guide rod 11 extends vertically downwards and passes through a corresponding guide hole on the pressure roller mounting plate 13. The lower end of the guide rod 11 can slide freely within the guide hole. There are two guide rods 11, symmetrically arranged on the left and right sides of the pressure roller swing frame 10. Compression springs 12 are sleeved on the outer periphery of the guide rods 11. The upper end of the compression spring 12 abuts against the lower surface of the pressure roller swing frame 10, and the lower end abuts against the upper surface of the pressure roller mounting plate 13. The compression spring 12 is always in a compressed state to push the pressure roller mounting plate 13 downwards. The pressure roller mounting plate 13 is located below the pressure roller swing frame 10. The two ends of the wheel axle of the outgoing wheel assembly are mounted on the pressure roller mounting plate 13 through bearing seats. The outgoing wheel assembly can move up and down with the pressure roller mounting plate 13. When the outgoing wheel assembly encounters a ground protrusion, it pushes the pressure roller mounting plate 13 upward and further compresses the compression spring 12. When the outgoing wheel assembly passes through a ground depression, the compression spring 12 pushes the pressure roller mounting plate 13 downward, so that the outgoing wheel assembly always maintains contact with the ground.

[0031] The energy storage mechanism includes a movable cylinder 14, a piston rod 15, and a gas tank 16. The cylinder body of the movable cylinder 14 is hinged to the fixed frame 2 via a mounting base. The axial direction of the movable cylinder 14 corresponds to the swing direction of the pressure roller swing frame 10. One end of the piston rod 15 is sealed and slidably disposed inside the cylinder body of the movable cylinder 14, and the other end of the piston rod 15 extends out of the cylinder body and is hinged to the swing end of the pressure roller swing frame 10. When the pressure roller swing frame 10 swings upward, the pressure roller swing frame 10 compresses the gas inside the cylinder body of the movable cylinder 14 through the piston rod 15, converting mechanical energy into gas pressure energy stored in the gas tank 16. When the swing spring drives the pressure roller swing frame 10 to reset, the piston rod 15 extends. The movable cylinder 14 is connected to the air tank 16 through an air pipe. The air tank 16 is fixedly installed on the upper surface of the pressure roller mounting plate 13 and moves up and down with the pressure roller mounting plate 13. The air tank 16 is used to store the high-pressure gas discharged from the movable cylinder 14, thereby realizing the temporary storage and release of energy, so that the energy storage mechanism can automatically adjust the output torque according to the working state of the floating swing arm. At the same time, the high-pressure gas stored in the air tank 16 also serves as the power source for the subsequent drive spacing adjustment mechanism and the annular airbag 20.

[0032] The outlet of the gas tank 16 is connected to a rotary sealing joint 17. The stator (fixed end) of the rotary sealing joint 17 is fixedly installed at the outlet of the gas tank 16 (the stator of the rotary sealing joint 17 does not rotate). The adjusting mechanism includes an annular air bladder 20 and a pressure relief valve 21. The outlet of the rotary sealing joint 17 is connected to a three-way valve 18. The rotor (rotating end) of the rotary sealing joint 17 rotates with the three-way valve 18. A sealing structure is provided between the stator and the rotor (rotating end) of the rotary sealing joint 17 to achieve sealing during rotation. The three-way valve 18 has two exhaust ends. The first exhaust end is connected to the air inlet of the pneumatic push rod 8 through the first solenoid valve 1901, and the second exhaust end is connected to the air inlet of the annular airbag 20 through the second solenoid valve 1902. The first solenoid valve 1901 and the second solenoid valve 1902 are both normally closed two-position two-way solenoid valves, which are used to open the corresponding air path when a control signal is received, so as to selectively supply the high-pressure gas in the gas tank 16 to the pneumatic push rod 8 or the annular airbag 20. The high-pressure gas stored in the gas tank 16 enters the three-way valve 18 through the exhaust port via the rotary sealing joint 17, and is distributed to the pneumatic push rod 8 and the annular airbag 20 as needed. The annular airbag 20 is a circular flexible sealing bag. The annular airbag 20 is embedded at the bottom of the guide rope groove 7 formed between the two wheel bodies 6. The inner ring surface of the annular airbag 20 is exposed on the inner surface of the guide rope groove 7. When the annular airbag 20 is inflated, it protrudes outward along the center direction of the guide rope groove 7, thereby reducing the effective groove depth of the guide rope groove 7 and increasing the restraining force on the seed rope 200. When the annular airbag 20 is deflated, the inner ring surface of the annular airbag 20 retracts, thereby increasing the effective groove depth of the guide rope groove 7 and reducing the restraining force on the seed rope 200. The pressure relief valve 21 is connected to the exhaust port of the annular airbag 20 and is used to automatically exhaust gas when the pressure inside the annular airbag 20 exceeds a set threshold, preventing the annular airbag 20 from being damaged due to overpressure. At the same time, it realizes the automatic unloading of the annular airbag 20. The three-way valve 18 is used to distribute the high-pressure gas stored in the gas tank 16 to the pneumatic push rod 8 and the annular airbag 20 as needed. The solenoid valve is used to control the opening and closing of the corresponding air path and the flow rate, thereby realizing the on-demand operation of the spacing adjustment mechanism and the adjustment mechanism, so that the width and depth of the guide rope groove 7 can be adaptively adjusted according to the gas pressure state stored in the energy storage mechanism.

[0033] The sliding plate 1 is vertically fixed to the side of the fixed frame 2. The surface of the sliding plate 1 is parallel to the forward direction of the seeder. Two symmetrically arranged sliding grooves 22 are provided on the sliding plate 1. The sliding grooves 22 are inclined relative to the vertical direction, and their bottoms are arranged in an inverted V-shape. The sliding grooves 22 guide the horizontal slider 25 to move in a specified direction. The cylinder body of the clamping cylinder 23 is fixedly installed on the upper part of the sliding plate 1. The piston rod of the clamping cylinder 23 extends vertically downward and is fixedly connected to the sliding end of the moving mounting plate 24. The clamping cylinder 23 drives the moving mounting plate 24 to move up and down along the vertically arranged linear guide rail 2301. The fixed end of the moving mounting plate 24 is fixedly installed on the sliding plate 1. Both sides of the moving mounting plate 24 are slidably engaged with the horizontal slider 25 via pins. The sliding direction of the horizontal slider 25 is perpendicular to the forward direction of the seeder. A cam follower 26 is fixedly mounted on a horizontal slider 25. The roller of the cam follower 26 is embedded in a sliding groove 22 and can roll along the sliding groove 22. When the clamping cylinder 23 drives the motion mounting plate 24 to move downward, the motion mounting plate 24 pushes the horizontal slider 25 downward. At this time, the cam follower 26 rolls along the inclined direction of the sliding groove 22. Due to the inclined guiding effect of the sliding groove 22, the horizontal sliders 25 move downward and move closer to each other in the horizontal direction. When the clamping cylinder 23 drives the motion mounting plate 24 to move upward, the horizontal sliders 25 move upward and move further apart in the horizontal direction. Each horizontal slider 25 is fixedly connected to a connecting rod 27. The connecting rod 27 extends backward along the forward direction of the seeder. The end of the connecting rod 27 is used to fix and install the cutting mechanism. When the two connecting rods 27 move closer to each other with the horizontal sliders 25, they drive the cutting mechanisms on both sides to close, thereby clamping and cutting the seed rope 200.

[0034] The cutting mechanism includes a horizontal cutter 28 and a vertical cutter 29, as shown in the instruction manual. Figure 4 Included with instruction manual Figure 5As shown, the horizontal cutter 28 and the vertical cutter 29 are used to cut the seed rope 200 at different positions. The horizontal cutter 28 is fixedly installed at the end of the connecting rod 27. The blade of the horizontal cutter 28 is arranged in a horizontal direction. The horizontal cutters 28 on the left and right sides are arranged opposite each other. A maze groove 30 is opened on the opposite surface of the horizontal cutter 28. The maze groove 30 is composed of multiple staggered arc-shaped turning segments connected end to end, so that the seed rope 200 must pass through the curved path after entering the maze groove 30. When the horizontal cutters 28 on the left and right sides are closed, the two maze grooves 30 interlock with each other. The seed rope 200 is bent and clamped in the maze groove 30, generating multi-point frictional resistance, so that the seed rope 200 is clamped, taut and cut. The vertical cutter 29 is fixedly connected to the lower or side of the horizontal cutter 28. The blade of the vertical cutter 29 is arranged vertically, and a maze groove 30 is also provided on the opposite surface of the vertical cutter 29. When the vertical cutters 29 on the left and right sides close together, the maze groove 30 of the vertical cutter 29 further clamps and guides the seed rope 200. The blades of the horizontal cutter 28 and the vertical cutter 29 are both set at the turning point of the maze groove 30. When the horizontal cutters 28 or the vertical cutter 29 on both sides close together, the maze groove 30 first clamps and straightens the seed rope 200. Then, the blades set in the maze groove 30 cut each other at the end of the closing stroke, cutting the seed rope 200 located in the maze groove 30. This achieves the rope-cutting action of clamping and fixing before cutting, avoiding the seed rope 200 from slipping or being pushed during cutting due to slack.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seeding unit for laying seed ropes and automatically cutting seed ropes, characterized in that, include: A frame, the frame including a seed rope supply assembly for supplying seed ropes to seeding units; A follow-up wire feeder assembly includes a wire feeder group and a spacing adjustment mechanism. The rim of the wire feeder group is provided with a rope guide groove. The lower edge of the wire feeder group is used to contact the surface of the ridge or seed furrow adjacent to the ground. The seed rope is located in the rope guide groove and is continuously fed out by rolling with the help of the wire feeder group. The spacing adjustment mechanism can slide relative to the wire feeder group along the axial direction. The spacing adjustment mechanism is used to change the spacing between the rims on both sides of the rope guide groove. A floating contouring connection assembly is provided, which connects the frame and the follower-type cable delivery wheel assembly respectively. The floating contouring connection assembly includes a floating swing arm and an elastic loading mechanism. The floating swing arm allows the follower-type cable delivery wheel assembly to float up and down relative to the frame, and the elastic loading mechanism is used to keep the cable delivery wheel assembly in contact with the ground. A clamping linkage assembly includes an energy storage mechanism and an adjustment mechanism. The energy storage mechanism is disposed on the floating swing arm. The energy storage mechanism is used to store energy when the floating swing arm is working and to trigger the opening of the spacing adjustment mechanism and the adjustment mechanism when the elastic loading mechanism is working. The adjustment mechanism is used to adjust the groove depth of the guide rope groove to realize the adaptive change of the guide rope groove to the constraint state of the seed rope. An automatic rope-cutting assembly includes a clamping mechanism and a cutting mechanism, wherein the clamping mechanism is used to drive the cutting mechanism to cut the seed rope.

2. The seeding unit with seed rope laying and automated rope cutting according to claim 1, characterized in that: The frame includes a sliding plate and a fixed frame, with the sliding plate connected to the fixed frame.

3. The seeding unit with seed rope laying and automated rope cutting according to claim 2, characterized in that: The seed rope supply assembly includes a rope reel, a mounting bracket, and a seed metering tube. The rope reel is connected to the fixed frame, and the seed rope is wound and stored on the rope reel. The mounting bracket is provided at the bottom of the fixed frame and is used to install the seed metering tube. One end of the seed rope passes through the seed metering tube and is connected to the rope guide groove.

4. The seeding unit with seed rope laying and automated rope cutting according to claim 2, characterized in that: The lead-out wheel assembly includes two symmetrically arranged wheels, with the rope guide groove formed between the two wheels. The spacing adjustment mechanism includes a pneumatic push rod, with its two ends connected to different wheels. The pneumatic push rod is used to change the distance between the two wheels, thereby altering the spacing of the rope guide groove.

5. The seeding unit with seed rope laying and automated rope cutting according to claim 4, characterized in that: The floating swing arm includes a swing spring and a pressure roller swing frame. The pressure roller swing frame is hinged to the fixed frame. The swing spring is used to drive the pressure roller swing frame to reset. The elastic loading mechanism is disposed on the pressure roller swing frame. The elastic loading mechanism is used to keep the cable outlet wheel assembly in contact with the ground.

6. The seeding unit with seed rope laying and automated rope cutting according to claim 5, characterized in that: The elastic loading mechanism includes guide rods, compression springs, and pressure roller mounting plates. The guide rods are symmetrically connected to both sides of the pressure roller swing frame. The other end of each guide rod is inserted into the pressure roller mounting plate. The compression spring is sleeved on the outside of the guide rod. The cable exit wheel assembly is mounted on the pressure roller mounting plate.

7. The seeding unit with seed rope laying and automated rope cutting according to claim 6, characterized in that: The energy storage mechanism includes a movable cylinder, a piston rod, and an air tank. The movable cylinder is connected to the fixed frame, the piston rod is movably connected to the cylinder, one end of the piston rod is connected to the pressure roller swing frame, the movable cylinder is connected to the air tank through a pipe, and the air tank is disposed on the pressure roller mounting plate.

8. The seeding unit with seed rope laying and automated rope cutting according to claim 7, characterized in that: The gas tank's outlet is connected to a rotary sealing joint. The adjustment mechanism includes an annular airbag and a pressure relief valve. The rotary sealing joint is connected to a three-way valve. The exhaust end of the three-way valve is connected to the adjustment push rod and the airbag respectively through a solenoid valve. The airbag is located in the guide rope groove and is connected to the pressure relief valve.

9. A seeding unit for seed rope laying and automated rope cutting according to claim 2, characterized in that: The sliding plate is symmetrically provided with sliding grooves. The clamping mechanism includes a clamping cylinder, a motion mounting plate, a horizontal slider, a cam follower, and a connecting rod. The clamping cylinder is disposed on the sliding plate and is used to drive the motion mounting plate to move along a linear guide rail. The horizontal sliders are symmetrically disposed on both sides of the motion mounting plate. The cam follower is disposed on the horizontal sliders, and the movable end of the cam follower is connected to the sliding groove. When the clamping cylinder drives the motion mounting plate to rise and fall, the cam follower will drive the horizontal sliders to move along the direction of the sliding groove. Each horizontal slider is connected to the connecting rod, which is used to install the cutting mechanism.

10. A seeding unit for seed rope laying and automated rope cutting according to claim 9, characterized in that: The cutting mechanism includes a horizontal cutter and a vertical cutter. The horizontal cutter is connected to the connecting rod, and the vertical cutter is connected to the horizontal cutter. Both the horizontal cutter and the vertical cutter are provided with a labyrinth groove. When the horizontal cutter or the vertical cutter on both sides closes to each other, the seed rope clamped inside the labyrinth groove will be cut off.

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