A grassland non-cultivation reseeding machine

Abstract

The utility model belongs to the agricultural planting technical field especially, relate to a kind of grassland ploughing and reseeding machine, to the collision of hard object that occurs easily with surface hard object by broken stubble cutting edge, cannot be identified and avoid hard object in advance, only rely on the passive bearing impact of blade itself strength, leading to the short service life of blade, operation stability is poor Problem, present and propose the following scheme, including seed placement box, the utility model is by setting L type column, third U-shaped block, movable rod and ultrasonic sensor on U type board, match counterweight ball to ensure that sensor is always close to surface near monitoring, can identify hard object such as broken stone, metal scrap in grassland in advance, when sensor detects hard object, hydraulic rod driving connecting plate rotates around rotating column, on the one hand drive cutting edge to rise and realize accurate avoidance, avoid the breakage, wear and tear problem caused by the direct collision of blade with hard object in traditional equipment, significantly extend the service life of cutting edge.

Description

Technical Field

[0001] This utility model relates to a reseeding machine, specifically a no-till reseeding machine for clearing pastures, belonging to the field of agricultural planting technology. Background Technology

[0002] In livestock production, hayfields are an important base for forage supply. Regular reseeding is necessary to maintain forage yield and quality. No-till reseeders have become the core equipment for hayfield reseeding because they can reduce soil disturbance, protect the ecology and operate efficiently. However, hayfields are harvested for forage all year round, leaving a large amount of hay stubble and roots on the surface, as well as hard objects such as gravel and metal fragments. Long-term operation also makes the soil surface compacted.

[0003] When operating in such fields, the blades of existing no-till reseeders are prone to collisions with hard objects on the ground, causing the blades to break, wear, or even break. This not only frequently interrupts the operation but also significantly increases equipment maintenance costs and downtime for repairs. At the same time, traditional no-till reseeders lack an active obstacle avoidance mechanism for the complex surface of hayfields, and cannot identify and avoid hard objects in advance. They rely solely on the strength of the blades to passively withstand impacts, resulting in short blade lifespan and poor operational stability, making it difficult to meet the needs of efficient and continuous reseeding operations in hayfields. Summary of the Invention

[0004] This utility model provides a no-till reseeding machine for hayfields to solve the problem that the blades of the stubble-breaking and ditching machine are prone to collision with hard objects on the ground, and cannot identify and avoid hard objects in advance. They rely solely on the strength of the blades themselves to passively withstand the impact, resulting in short blade life and poor operational stability.

[0005] The present invention achieves the above objectives through the following technical solution: a no-till reseeding machine for hayfields, including a seed placement box, with partitions fixedly connected at equal intervals on the inner wall of the seed placement box, the partitions dividing the inside of the seed placement box into multiple independent chambers, and mounting plates fixedly connected symmetrically to the bottom of the seed placement box, with a support frame fixedly connected to the inner wall of the two mounting plates. The support frame has multiple notches evenly spaced on one side of the rod surface. Each notch is rotatably connected to a rotating column. Each rotating column has a connecting plate installed on its surface. A trenching shovel is fixedly connected to the side of the connecting plate. U-shaped plates are fixedly connected to both sides of the support frame surface at the notches. A first U-shaped block is fixedly connected to the bottom surface of the U-shaped plate. A second U-shaped block is fixedly connected to the side of the connecting plate away from the trenching shovel. A hydraulic rod is hinged between the first U-shaped block and the second U-shaped block.

[0006] As a further embodiment of this utility model: the bottom of the seed placement box is provided with equally spaced material leakage channels. A seed transition box is fixedly connected to the bottom surface of the seed placement box at the position of each material leakage channel. Rotating blocks are rotatably connected to both sides of each seed transition box. A feeding roller is fixedly connected between two rotating blocks. The feeding roller is located inside the seed transition box, and the surface of the feeding roller has seed material grooves in a circular array. A guide cover is suspended directly below the seed transition box. A conveying hose is fixedly connected to the bottom surface of the guide cover. The conveying hose is fixedly connected to a connecting plate. A drive rod is rotatably connected between two mounting plates. The drive rod passes through each seed transition box, and each feeding roller is fixedly sleeved on the surface of the drive rod. One end of the drive rod extends to the outside of the mounting plate, and a drive gear is fixedly connected to the end of the drive rod extending to the outside of the mounting plate.

[0007] As a further improvement of this utility model: each seed transition box has a brush symmetrically fixed to its inner wall surface by bolts, and the brush is in contact with the surface of the feeding roller.

[0008] As a further embodiment of this utility model: a U-shaped locking rod is symmetrically arranged on one side surface of the rotating column, and a multi-shaped locking plate is arranged on the side surface of the rotating column away from the U-shaped locking rod. The multi-shaped locking plate has a fixing hole adapted to the U-shaped locking rod on its surface. The connecting plate is fixedly connected to the rotating column through the cooperation of the U-shaped locking rod and the multi-shaped locking plate.

[0009] As a further embodiment of this utility model: an L-shaped column is fixedly connected to the surface of the U-shaped plate, a third U-shaped block is fixedly connected to the bottom end of the L-shaped column, a T-shaped rotating rod is rotatably connected to the surface of the third U-shaped block, a movable rod is rotatably connected to the inner wall of the third U-shaped block, one end of the T-shaped rotating rod extends into the interior of the third U-shaped block and is fixedly connected to the movable rod, a torsion spring is provided between the T-shaped rotating rod and the third U-shaped block and sleeved on the surface of the T-shaped rotating rod, one end of the torsion spring is fixedly connected to the surface of the third U-shaped block, the other end of the torsion spring is fixedly connected to the T-shaped end of the T-shaped rotating rod, and an ultrasonic sensor is fixedly connected to the bottom end of the movable rod.

[0010] As a further improvement of this invention: a counterweight ball is fixedly connected to the surface of the movable rod above the ultrasonic sensor.

[0011] As a further embodiment of this utility model: L-shaped struts are fixedly connected at equal intervals on the side of the support frame away from the trench shovel. An installation platform is fixedly connected to the top of the L-shaped struts. The installation platform and the support frame are fixedly connected. A fertilizer tank and a water pump are fixedly installed on the surface of the installation platform. A medicine inlet pipe is fixedly connected to the water inlet of the water pump. The medicine inlet pipe is fixedly connected to the water outlet of the fertilizer tank. A medicine outlet pipe is fixedly connected to the water outlet of the water pump. A multi-port pipe is fixedly connected to the end of the medicine outlet pipe. A reinforcing plate is fixedly connected between the multi-port pipe and the installation platform. Spray nozzles are fixedly connected at equal intervals on the bottom surface of the multi-port pipe. The installation position of the spray nozzles is on the same straight line as the trench shovel, so that the liquid sprayed by the spray nozzles can accurately cover the trench formed by the trench shovel.

[0012] As a further embodiment of this utility model: a U-shaped frame is fixedly connected between the two mounting plates, and mounting ear plates are symmetrically fixedly connected to the surface of the U-shaped frame. The mounting ear plates are used to connect with the external vehicle body.

[0013] The beneficial effects of this utility model are: 1. This utility model, by setting an L-shaped column, a third U-shaped block, a movable rod, and an ultrasonic sensor on a U-shaped plate, and using a counterweight ball to ensure that the sensor is always in close contact with the ground surface for monitoring, can identify hard objects such as gravel and metal fragments in the hayfield in advance. At the same time, the trenching shovel is rotatably connected to the support frame through a connecting plate and a rotating column, and a hydraulic rod is hinged between the connecting plate and the U-shaped plate. When the sensor detects a hard object, the hydraulic rod drives the connecting plate to rotate around the rotating column. On the one hand, it drives the trenching shovel to rise for precise avoidance, avoiding the cracking and wear problems caused by the blade directly colliding with hard objects in traditional equipment, and significantly extending the service life of the trenching shovel. On the other hand, because the material conveying hose is fixedly connected to the connecting plate, the rotation of the connecting plate will synchronously drive the material conveying hose to rotate, so that the material conveying hose contacts the support frame and is squeezed and flattened, thereby automatically stopping the seeds from falling continuously, avoiding the waste of seeds caused by no trench during the trenching shovel obstacle avoidance and seed supply synchronization in traditional equipment. When the trenching shovel completes obstacle avoidance and returns to the normal trenching state, the connecting plate drives the material conveying hose to return to its original position. The compression between the material conveying hose and the support frame is released and restored to its original state. The seeds can be smoothly transported to the sowing position again through the hose. The automatic switching of "obstacle avoidance and material cut-off - reset and seed supply" can be achieved without manual intervention, ensuring the continuity of reseeding operations in hayfields and reducing manual operation costs. The connecting plate is fixed to the rotating column by the cooperation of the U-shaped clamp and several types of clamps. When the trenching shovel is worn out due to long-term operation, there is no need to disassemble the complex structure. It can be quickly replaced by simply removing several types of clamps, reducing downtime for maintenance and further reducing the manpower and time costs of equipment maintenance.

[0014] 2. In this utility model, the seed storage box is divided into multiple independent chambers by equally spaced partitions, which can store different varieties and different particle sizes of forage seeds at the same time, meet the diversified reseeding needs of hayfields, and avoid the seed mixing problem caused by traditional single-chamber seed storage. The bottom of the seed placement box has a material leakage channel corresponding to the chamber, which, together with the feeding roller (with a circular array of seed troughs on the surface) in the seed transition box, enables quantitative sowing and ensures that the number of seeds in each groove is uniform. At the same time, brushes are symmetrically fixed on the inner wall of the seed transition box, which can clean the seeds adhering to the surface of the feeding roller in real time, avoid sowing deviation caused by seed residue, and further ensure the germination rate of forage grass.

[0015] 3. In this utility model, a platform is fixedly installed on one side of the support frame by an L-shaped strut. A fertilizer tank and a water pump are set on the platform. The water pump draws the water-fertilizer mixture from the fertilizer tank through the inlet pipe and delivers it to the nozzle through the outlet pipe and multi-port pipe. The nozzle and the trenching shovel are on the same straight line. The water-fertilizer mixture can be accurately sprayed into the trench while trenching and sowing seeds, realizing the integrated operation of "trenching-sowing-fertilizing / spraying". There is no need for subsequent separate water and fertilizer management, which greatly reduces the number of haymaking operations and reduces labor and time costs. The nozzles are directed to spray the solution into the trenches, avoiding the waste caused by spraying the water and fertilizer mixture into non-reseeding areas, thus improving the utilization rate of water and fertilizer resources. At the same time, it provides sufficient nutrients for seed germination, further improving the survival rate and growth quality of reseeded forage grass.

[0016] 4. In this utility model, a U-shaped frame is fixedly connected between the two mounting plates. The surface of the U-shaped frame is symmetrically equipped with mounting ear plates, which can be quickly and fixedly connected to external vehicle bodies such as tractors. The connection is stable and avoids problems such as trenching deviation and uneven sowing caused by equipment shaking during operation. At the same time, the drive rod extends to the outside of the mounting plate and fixes the drive gear. It can drive the feed roller to rotate through external power to ensure the stable and continuous sowing process and ensure the continuity and efficiency of large-area reseeding operations in hayfields. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of part of the structure of this utility model. Figure 3 ; Figure 4 This is a schematic diagram of the connection structure of the trenching shovel, the conveying hose, and the guide cover in this utility model; Figure 5 This is a schematic diagram of the connection structure of the connecting plate, hydraulic rod and trenching shovel in this utility model; Figure 6This is a schematic diagram showing the disassembled structure of the connecting plate, U-shaped clamp, and several types of clamps in this utility model; Figure 7 This is a schematic diagram of the connection structure of the U-shaped plate, the supporting frame, and the L-shaped column in this utility model; Figure 8 This is a schematic diagram of the connection structure of the L-shaped column, the movable rod, and the ultrasonic sensor in this utility model; Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 This is a schematic diagram of the internal structure of the seed placement box in this utility model; Figure 11 This is a schematic diagram showing the disassembled structure of the seed transfer box and the guide cover in this utility model; Figure 12 This is a schematic diagram showing the position and structure of the feeding roller and brush of this utility model.

[0018] In the diagram: 1. Seed placement box; 2. Partition; 3. U-shaped frame; 4. Mounting ear plate; 5. Mounting plate; 6. Support frame; 7. Material leakage channel; 71. Seed transfer box; 72. Rotating block; 73. Feeding roller; 74. Brush; 76. Material guide cover; 77. Conveying hose; 78. Drive rod; 79. Drive gear; 80. Rotating column; 81. Hexagonal clamping plate; 82. U-shaped clamping rod; 83. Connecting plate; 84. Trenching shovel; 85. U 86. Mold plate; 87. L-shaped column; 88. First U-shaped block; 89. Second U-shaped block; 80. Hydraulic rod; 811. Third U-shaped block; 812. Movable rod; 813. Counterweight ball; 814. Ultrasonic sensor; 815. T-shaped rotating rod; 916. Torsion spring; 91. L-shaped support rod; 92. Mounting platform; 93. Fertilizer tank; 94. Inlet pipe; 95. Water pump; 96. Outlet pipe; 97. Multi-port pipe; 98. Reinforcing plate; 99. Nozzle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1 like Figures 1 to 12As shown, a no-till reseeding machine for hayfields includes a seed placement box 1. The inner wall of the seed placement box 1 is fixedly connected with partitions 2 at equal intervals. The partitions 2 divide the inside of the seed placement box 1 into multiple independent chambers. The bottom surface of the seed placement box 1 is symmetrically fixedly connected with mounting plates 5. The inner walls of the two mounting plates 5 are fixedly connected with support frames 6. The support frame 6 has multiple notches evenly spaced on one side of its shaft surface. Each notch is rotatably connected to a rotating column 8. Each rotating column 8 has a connecting plate 83 mounted on its surface. A trenching shovel 84 is fixedly connected to the side of the connecting plate 83. U-shaped plates 85 are fixedly connected to both sides of the notch on the surface of the support frame 6. A first U-shaped block 87 is fixedly connected to the bottom surface of the U-shaped plate 85. A second U-shaped block 88 is fixedly connected to the side of the connecting plate 83 away from the trenching shovel 84. A hydraulic rod 89 is hinged between the first U-shaped block 87 and the second U-shaped block 88.

[0021] When using this no-till reseeding machine for hay clearing, first, according to the reseeding needs, different varieties or particle sizes of forage seeds are poured into the seed placement box 1 and the independent chambers separated by the partition 2 to complete the classification and loading. Then, the equipment is fixedly connected to the external power device such as a tractor to ensure the stability of the support frame 6. Subsequently, the equipment moves with the external power device, and the support frame 6 drives the furrowing shovel 84 to break up stubble and open furrows along the ground surface. At the same time, the seeds in the seed placement box 1 fall into the corresponding furrows to complete the reseeding. When the furrowing shovel 84 encounters hard objects such as gravel or metal fragments, the hydraulic rod 89 is activated. Its piston rod pulls the connecting plate 83 around the rotating column 8 in the notch of the support frame 6 through the second U-shaped block 88, causing the furrowing shovel 84 to be raised to avoid the hard objects. After passing the hard objects, the piston rod of the hydraulic rod 89 is reset, pushing the connecting plate 83 and the furrowing shovel 84 back to their original positions to continue the operation. This process not only meets the needs of mixed sowing or zoned reseeding of multiple varieties of forage in hayfields through the multi-chamber design of the seed placement box 1 and the partition 2, improving operational flexibility, but also achieves lifting and obstacle avoidance by means of the cooperation of the rotating column 8, hydraulic rod 89, connecting plate 83 and trenching shovel 84, avoiding damage to the trenching shovel 84 by collision with hard objects, extending service life and reducing downtime maintenance costs.

[0022] Furthermore, the bottom of the seed placement box 1 is provided with equally spaced material leakage channels 7. A seed transition box 71 is fixedly connected to the bottom surface of the seed placement box 1 at the position of each material leakage channel 7. Rotating blocks 72 are rotatably connected to both sides of each seed transition box 71. A feeding roller 73 is fixedly connected between two rotating blocks 72. The feeding roller 73 is located inside the seed transition box 71, and the surface of the feeding roller 73 is provided with seed material grooves in a circular array. A guide cover 76 is suspended directly below the seed transition box 71. A conveying hose 77 is fixedly connected to the bottom surface of the guide cover 76. The conveying hose 77 is fixedly connected to the connecting plate 83. A drive rod 78 is rotatably connected between two mounting plates 5. The drive rod 78 passes through each seed transition box 71, and each feeding roller 73 is fixedly sleeved on the surface of the drive rod 78. One end of the drive rod 78 extends to the outside of the mounting plate 5, and a drive gear 79 is fixedly connected to the end of the drive rod 78 extending to the outside of the mounting plate 5.

[0023] During use, the forage seeds are first poured into the seed placement box 1. The seeds fall into the corresponding seed transition box 71 through the material leakage channels 7 at equal intervals on the bottom of the box. After the equipment is started, the external power drives the drive rod 78 to rotate through the drive gear 79. The drive rod 78 drives the feeding roller 73 (supported by the rotating blocks 72 on both sides) in the various seed transition boxes 71 to rotate. The seed grooves in the circular array on the surface of the feeding roller 73 will quantitatively collect the seeds and transport them to the bottom of the seed transition box 71 as they rotate. Then the seeds are guided into the conveying hose 77 through the guide cover 76. Finally, the seeds are accurately transported into the trench opened by the trenching shovel 84 through the conveying hose 77 fixed to the connecting plate 83, thus completing the quantitative sowing. In this process, the one-to-one correspondence between the material leakage channel 7 and the seed transition box 71, combined with the quantitative receiving of the seed trough by the feeding roller 73, enables uniform and quantitative seed sowing, avoiding the problem of inconsistent seed quantity in traditional sowing and ensuring uniform seedling density of forage. Secondly, the cooperation between the guide cover 76 and the conveying hose 77 can accurately guide the seeds to the furrow, reducing seed spillage and waste. At the same time, the conveying hose 77 is fixed to the connecting plate 83 and can move synchronously with the furrowing shovel 84 to ensure that the sowing position and the furrowing position are always matched.

[0024] Furthermore, each seed transition box 71 has a brush 74 symmetrically fixed to its inner wall surface by bolts, and the brush 74 is in contact with the surface of the feeding roller 73.

[0025] During use, the continuous contact between the brush 74 and the feeding roller 73 can remove the seeds adhering to the surface of the feeding roller 73 in real time, avoiding the residual seeds from affecting the subsequent quantitative reception of the seed trough, ensuring that the amount of seeds sown in each batch is accurate and consistent, and further ensuring that the germination density of forage is uniform.

[0026] Furthermore, a U-shaped locking rod 82 is symmetrically arranged on one side surface of the rotating column 8, and a multi-shaped locking plate 81 is arranged on the side surface of the rotating column 8 away from the U-shaped locking rod 82. The surface of the multi-shaped locking plate 81 is provided with a fixing hole that matches the U-shaped locking rod 82. The connecting plate 83 is fixedly connected to the rotating column 8 through the cooperation of the U-shaped locking rod 82 and the multi-shaped locking plate 81.

[0027] When assembling the equipment or maintaining or replacing the trenching shovel 84, first attach the connecting plate 83 to the surface of the rotating column 8, aligning the U-shaped clamps 82 symmetrically arranged on one side of the rotating column 8 with the preset installation position of the connecting plate 83; then take the multi-type clamping plate 81 and fasten it to the side of the rotating column 8 away from the U-shaped clamps 82, while ensuring that the fixing holes on the surface of the multi-type clamping plate 81 are precisely aligned with the U-shaped clamps 82. Through the engagement of the U-shaped clamps 82 and the fixing holes, the connecting plate 83 and the rotating column 8 are fixedly connected, thereby realizing the assembly of the trenching shovel 84 on the support frame 6; when it is necessary to replace the trenching shovel 84, simply separate the engagement of the U-shaped clamps 82 and the multi-type clamping plate 81 to quickly remove the connecting plate 83 and the trenching shovel 84; The connection plate 83 and the rotating column 8 are fixed by the interlocking of the U-shaped clamp 82 and the several types of clamping plates 81. Without the need for complicated tools or disassembling multiple sets of parts, the operator can quickly complete the assembly and disassembly of the connecting plate 83 and the rotating column 8, which greatly shortens the maintenance and replacement time of the trenching shovel 84 and reduces the labor cost of equipment maintenance. Moreover, the symmetrical arrangement of the U-shaped clamp 82 and its precise fit with the fixing holes of the several types of clamping plates 81 can ensure that the connecting plate 83 and the rotating column 8 fit tightly and are firmly connected. This prevents the trenching shovel 84 from shifting or shaking due to loose connection during operation, ensuring uniform trenching depth and trajectory, and guaranteeing the stability and accuracy of reseeding operations.

[0028] Furthermore, an L-shaped column 86 is fixedly connected to the surface of the U-shaped plate 85, a third U-shaped block 810 is fixedly connected to the bottom end of the L-shaped column 86, a T-shaped rotating rod 814 is rotatably connected to the surface of the third U-shaped block 810, a movable rod 811 is rotatably connected to the inner wall of the third U-shaped block 810, one end of the T-shaped rotating rod 814 extends into the interior of the third U-shaped block 810 and is fixedly connected to the movable rod 811, a torsion spring 815 is provided between the T-shaped rotating rod 814 and the third U-shaped block 810 and sleeved on the surface of the T-shaped rotating rod 814, one end of the torsion spring 815 is fixedly connected to the surface of the third U-shaped block 810, and the other end of the torsion spring 815 is fixedly connected to the T-shaped end of the T-shaped rotating rod 814, and an ultrasonic sensor 813 is fixedly connected to the bottom end of the movable rod 811.

[0029] Furthermore, a counterweight ball 812 is fixedly connected to the surface of the movable rod 811 at a position above the ultrasonic sensor 813.

[0030] Before the equipment is put into operation, check the connection status between the L-shaped column 86 fixed on the surface of the U-shaped plate 85 and the third U-shaped block 810. Confirm the movable rod 811 rotatably connected to the inner wall of the third U-shaped block 810, the T-shaped rotating rod 814 rotatably connected to the surface (fixed to the movable rod 811), and the torsion spring 815 sleeved on the surface of the T-shaped rotating rod 814 (both ends of which are connected to the third U-shaped block 810 and the T-shaped rotating rod 814 respectively). The T-shaped end and the counterweight ball 812 fixed on the surface of the movable rod 811 (located above the ultrasonic sensor 813) are all properly assembled. During operation, the elastic force of the torsion spring 815 and the gravity of the counterweight ball 812 work together to keep the movable rod 811 always in a downward trend, causing the ultrasonic sensor 813 at the bottom to fit tightly against the surface of the grass cutting field and scan for hard objects such as gravel and metal fragments in front in real time. When the ultrasonic sensor 813 encounters a protruding hard object, it pushes the movable rod 811 to rotate around the third U-shaped block 810, which simultaneously drives the T-shaped rotating rod 814 to rotate and compress the torsion spring 815. The counterweight ball 812 deflects synchronously with the movable rod 811. After the ultrasonic sensor 813 passes the hard object, the torsion spring 815 returns to its original position. With the gravity traction of the counterweight ball 812, the T-shaped rotating rod 814 and the movable rod 811 are quickly rotated back to their original positions, and the ultrasonic sensor 813 re-fits the ground surface to continue detection. During this process, the weight of the counterweight ball 812 and the elasticity of the torsion spring 815 form a double downward force, which ensures that the ultrasonic sensor 813 is always in close contact with the ground surface even if there are slight undulations or piles of hay stubble on the ground, thus avoiding the sensor being suspended and causing the hard objects to be missed, and providing more reliable signal support for the trenching shovel 84 to avoid obstacles. After passing over a hard object, the weight of the counterweight ball 812 can assist the torsion spring 815 in quickly pulling the movable rod 811 back to its original position, shortening the time for the ultrasonic sensor 813 to recover from its deflection state to its contact with the ground surface, reducing the duration of detection interruption, and ensuring that the trenching shovel 84 can receive the signal for obstacle avoidance or resumption of operation in a timely manner, thus ensuring continuous and efficient reseeding operations.

[0031] It should be noted that: the third U-shaped block 810 has an overall "U"-shaped frame structure. The left sidewall of the third U-shaped block 810 is a complete sealed plate structure without openings or gaps, forming a closed blocking surface; while the right sidewall maintains the open form of the "U"-shaped frame, serving only as structural support and not having a sealing blocking function. Coaxial rotating holes are provided at corresponding positions on the inner walls of both sides of the third U-shaped block 810 (including the left sealed sidewall and the right open sidewall). The two ends of the movable rod 811 are rotatably connected to the inner wall of the third U-shaped block 810 through the rotating holes, allowing the movable rod 811 to rotate around the axis of the rotating holes. A fixing boss is provided on the top surface of the third U-shaped block 810 (next to the mounting hole) for fixing one end of the torsion spring 815; the bottom surface of the T-shaped end of the T-shaped rotating rod 814 also has a corresponding fixing point, and the torsion spring... The 815 is fitted onto the surface of the T-shaped rotating rod 814, with its two ends fixed to the fixing boss of the third U-shaped block 810 and the T-shaped end of the T-shaped rotating rod 814, respectively, forming an elastic reset assembly. The physical blocking surface formed by the left sealing sidewall can directly restrict the rotation of the movable rod 811 to the left by tightly fitting with the side of the movable rod 811 when the movable rod 811 is reset to the initial state, allowing it to rotate only to the right (the side without sealing blocking). This ensures that the ultrasonic sensor 813 is always kept in the preset detection area in front of the trenching shovel 84 and will not shift to the left due to equipment vibration, ground undulation, or fluctuation of the elasticity of the torsion spring 815, completely eliminating the problem of "detection blind zone" or "false detection (detection of non-trenching area)" caused by sensor position shift, and providing a stable detection range for hard object identification.

[0032] Example 2 Improvements based on Example 1: Furthermore, L-shaped struts 9 are fixedly connected at equal intervals on the side of the support frame 6 away from the trench shovel 84. An installation platform 91 is fixedly connected to the top of the L-shaped struts 9. The installation platform 91 is fixedly connected to the support frame 6. A fertilizer tank 92 and a water pump 94 are fixedly installed on the surface of the installation platform 91. A medicine inlet pipe 93 is fixedly connected to the water inlet end of the water pump 94. The medicine inlet pipe 93 is fixedly connected to the water outlet of the fertilizer tank 92. A medicine outlet pipe 95 is fixedly connected to the water outlet end of the water pump 94. A multi-port pipe 96 is fixedly connected to the end of the medicine outlet pipe 95. A reinforcing plate 97 is fixedly connected between the multi-port pipe 96 and the installation platform 91. Spray nozzles 98 are fixedly connected at equal intervals on the bottom surface of the multi-port pipe 96. The installation position of the spray nozzles 98 is on the same straight line as the trench shovel 84, so that the liquid sprayed by the spray nozzles 98 can accurately cover the trench excavated by the trench shovel 84.

[0033] During use, first inject the water-fertilizer mixture into the fertilizer tank 92 on the surface of the installation platform 91, and check the sealing of the inlet pipe 93 (connecting the water inlet of the water pump 94 to the outlet of the fertilizer tank 92), the outlet pipe 95 (connecting the water outlet of the water pump 94 to the multi-way pipe 96), and the stability of the reinforcing plate 97 between the multi-way pipe 96 and the installation platform 91. During operation, start the water pump 94, and the water-fertilizer mixture is drawn into the water pump 94 through the inlet pipe 93. After being pressurized by the water pump 94, it is transported to the multi-way pipe 96 through the outlet pipe 95, and finally sprayed out through the nozzles 98 evenly spaced on the bottom surface of the multi-way pipe 96. Because the nozzles 98 and the trenching shovel 84 are on the same straight line, the sprayed liquid can accurately cover the trenches dug by the trenching shovel 84, and the water and fertilizer replenishment is completed simultaneously with trenching and seed sowing. The alignment design of the nozzle 98 and the trenching shovel 84 ensures that the pesticide is sprayed only in the trench, avoiding spraying into non-reseeding areas and wasting water and fertilizer. At the same time, it allows the seeds to be directly in a water- and fertilizer-rich environment, providing precise nutrient support for seed germination and improving the survival rate of reseeding.

[0034] Furthermore, a U-shaped frame 3 is fixedly connected between the two mounting plates 5, and mounting ear plates 4 are symmetrically fixedly connected to the surface of the U-shaped frame 3. The mounting ear plates 4 are used to connect with the external vehicle body.

[0035] Before operation, first confirm the fixed status of the U-shaped frame 3 and the two mounting plates 5, and check whether the bolt holes on the surface of the mounting ear plate 4 are intact; then align the mounting ear plate 4 with the traction or suspension connection position of the external vehicle body (such as a tractor), and pass the bolts through the bolt holes of the mounting ear plate 4 and the connection holes of the external vehicle body in sequence, and tighten the bolts to complete the fixation; after fixing, check the fit between the U-shaped frame 3 and the external vehicle body to ensure that there is no looseness or deviation, and then the equipment can be moved and operated on the hay cutting field by the power of the external vehicle body.

[0036] Working principle: When in use, firstly, according to the reseeding needs of the hayfield, different varieties and different particle sizes of forage seeds are poured into the independent chambers separated by partitions 2 in the seed storage box 1 to complete the seed classification and loading, avoiding the seed mixing problem caused by traditional single-chamber seed storage, meeting the needs of mixed sowing of multiple varieties of forage or zoned reseeding, and improving the flexibility of operation. Next, confirm that the rotating column 8 engages with the several types of clamping plates 81 through the U-shaped clamping rod 82, thereby achieving a stable assembly of the connecting plate 83 and the trenching shovel 84; check the linkage structure of the third U-shaped block 810 (sealed on the left and open on the right) with the movable rod 811, the T-shaped rotating rod 814, and the torsion spring 815, as well as the fixed status of the counterweight ball 812 and the ultrasonic sensor 813 on the movable rod 811; at the same time, check the storage level of the water-fertilizer mixture in the fertilizer tank 92, and ensure that the inlet pipe 93 and the outlet pipe 95 are connected and sealed. After inspection, the equipment is connected to the external vehicle body such as a tractor by using the symmetrical mounting ear plates 4 on the surface of the U-shaped frame 3. The bolts are passed through the bolt holes of the mounting ear plates 4 and connected to the external vehicle body holes and tightened to fix them. When in use, first start the external vehicle (such as a tractor) to drive the equipment to move at a constant speed on the hayfield. The support frame 6 moves synchronously with the equipment. The rotating column 8 in its notch drives the connecting plate 83 to fit the ditching shovel 84 to the ground surface, ready to carry out stubble breaking and ditching operations. During this process, under the combined action of the elastic force of the torsion spring 815 and the gravity of the counterweight ball 812, the movable rod 811 always maintains a downward trend, driving the ultrasonic sensor 813 at the bottom to approach the ground surface and scan for hard objects such as gravel and metal fragments in front of the trenching shovel 84 in real time. When the ultrasonic sensor 813 detects a hard object, the hard object will push the movable rod 811 to rotate around the right side of the third U-shaped block 810, which will simultaneously drive the T-shaped rotating rod 814 to compress the torsion spring 815. The counterweight ball 812 will deflect with the movable rod 811 to avoid the ultrasonic sensor 813 from colliding and being damaged by the hard object. At the same time, after the ultrasonic sensor 813 sends a signal of a hard object, it starts the hydraulic rod 89 through the peripheral controller. Its piston rod pushes the connecting plate 83 through the second U-shaped block 88, so that the connecting plate 83 rotates upward around the rotating column 8 in the notch of the support frame 6, which drives the trenching shovel 84 to be lifted to avoid the hard object. This solves the problem of cracking and wear caused by the blade of traditional equipment directly colliding with hard objects, extends the service life of the trenching shovel 84, and reduces downtime maintenance costs. After the trenching shovel 84 passes over a hard object, the torsion spring 815 returns to its original position. With the help of the counterweight ball 812, the movable rod 811 and the T-shaped rotating rod 814 are quickly driven back to their initial positions, and the ultrasonic sensor 813 re-adheres to the ground surface for detection. When there is no hard object, the ultrasonic sensor 813 sends a signal to the controller, which then controls the hydraulic rod 89 piston rod to return to its original position, pushing the connecting plate 83 and the trenching shovel 84 to the ground surface to continue breaking up stubble and trenching, ensuring the continuity of the operation. During this process, external power drives the drive rod 78 to rotate via the drive gear 79. The drive rod 78 synchronously drives the feeding rollers 73 (supported by rotating blocks 72 on both sides) in various seed transition boxes 71 to rotate. Seeds in the seed placement box 1 fall into the corresponding seed transition box 71 through the leakage channel 7. The seed grooves in the circular array on the surface of the feeding roller 73 quantitatively receive the seeds and transport them to the bottom of the seed transition box 71 as it rotates. The seeds are then guided into the conveying hose 77 through the guide cover 76. Since the conveying hose 77 is fixed to the connecting plate 83, it can move synchronously with the trenching shovel 84 to accurately deliver the seeds into the trenches opened by the trenching shovel 84, avoiding seed spillage and waste. At the same time, when the trenching shovel 84 is raised to avoid obstacles, the conveying hose 77 rotates with the connecting plate 83 and contacts the support frame 6 to be squeezed and flattened, automatically preventing the seeds from falling and preventing seed waste caused by no-ditch sowing. This achieves automatic synchronization of "obstacle avoidance-material cut-off" and "reset-seed supply". The brushes 74, which are symmetrically fixed on the inner wall of the seed transition box 71, are in continuous contact with the surface of the feeding roller 73 to clean the residual seeds adhering to the surface of the feeding roller 73 in real time, so as to avoid the residual seeds affecting the subsequent quantitative reception of the seed trough, ensuring that the amount of seeds sown in each batch is accurate and consistent, and ensuring that the forage seedling density is uniform. During this process, the water pump 94 on the installation platform 91 is started simultaneously. The water-fertilizer mixture in the fertilizer tank 92 is drawn into the water pump 94 through the inlet pipe 93, pressurized, and then transported to the multi-port pipe 96 through the outlet pipe 95. Finally, it is sprayed out through the nozzles 98 at equal intervals on the bottom surface of the multi-port pipe 96. Since the nozzles 98 and the trenching shovel 84 are on the same straight line, the liquid can accurately cover the trench dug by the trenching shovel 84, realizing the integrated operation of "ditching-sowing-water and fertilizer replenishment". There is no need to carry out separate water and fertilizer management afterward, reducing the number of operations and reducing labor and time costs. At the same time, it avoids water and fertilizer being sprayed into non-reseeding areas, which would cause waste, improve resource utilization, and provide sufficient nutrients for seed germination, further improving the survival rate of reseeding. When the trenching shovel 84 needs to be replaced due to normal wear and tear from long-term operation, it is only necessary to separate the U-shaped clamp 82 on the rotating column 8 from the clamp plate 81 to remove the connecting plate 83 and the trenching shovel 84. This eliminates the need to disassemble complex structures, significantly shortens maintenance and replacement time, reduces the labor cost of equipment maintenance, and solves the problems of difficult and time-consuming maintenance of traditional equipment.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A no-till reseeding machine for hayfields, comprising a seed storage box (1), characterized in that: The inner wall of the seed placement box (1) is fixedly connected with partitions (2) at equal intervals. The partitions (2) divide the inside of the seed placement box (1) into multiple independent chambers. The bottom surface of the seed placement box (1) is symmetrically fixedly connected with mounting plates (5). The inner walls of the two mounting plates (5) are fixedly connected with support frames (6). The support frame (6) has multiple notches evenly spaced on one side of its rod surface. Each notch is rotatably connected to a rotating column (8). Each rotating column (8) is mounted with a connecting plate (83). A trenching shovel (84) is fixedly connected to the side of the connecting plate (83). U-shaped plates (85) are fixedly connected to both sides of the notch on the surface of the support frame (6). A first U-shaped block (87) is fixedly connected to the bottom surface of the U-shaped plate (85). A second U-shaped block (88) is fixedly connected to the side of the connecting plate (83) away from the trenching shovel (84). A hydraulic rod (89) is hinged between the first U-shaped block (87) and the second U-shaped block (88).

2. The no-till reseeding machine for haymaking as described in claim 1, characterized in that: The bottom of the seed placement box (1) is provided with equally spaced material leakage channels (7). A seed transition box (71) is fixedly connected to the bottom surface of the seed placement box (1) at the position of each material leakage channel (7). Rotating blocks (72) are rotatably connected to both sides of each seed transition box (71). A feeding roller (73) is fixedly connected between two rotating blocks (72). The feeding roller (73) is located inside the seed transition box (71), and its surface is provided with seed material grooves in a circular array. A guide cover is suspended directly below the seed transition box (71). 76), the bottom surface of the guide cover (76) is fixedly connected to a conveying hose (77), the conveying hose (77) and the connecting plate (83) are fixedly connected, and a drive rod (78) is rotatably connected between the two mounting plates (5). The drive rod (78) passes through each seed transition box (71), and each feeding roller (73) is fixedly sleeved on the surface of the drive rod (78). One end of the drive rod (78) extends to the outside of the mounting plate (5), and a drive gear (79) is fixedly connected to the end of the drive rod (78) extending to the outside of the mounting plate (5).

3. The no-till reseeding machine for hay clearing as described in claim 2, characterized in that: Each of the seed transition boxes (71) has a brush (74) symmetrically fixed to its inner wall surface by bolts, and the brush (74) is in contact with the surface of the feed roller (73).

4. The no-till reseeding machine for hay clearing as described in claim 1, characterized in that: A U-shaped clamp (82) is symmetrically arranged on one side surface of the rotating column (8), and a multi-shaped clamp (81) is arranged on the side surface of the rotating column (8) away from the U-shaped clamp (82). The surface of the multi-shaped clamp (81) is provided with a fixing hole that matches the U-shaped clamp (82). The connecting plate (83) is fixedly connected to the rotating column (8) through the cooperation of the U-shaped clamp (82) and the multi-shaped clamp (81).

5. The no-till reseeding machine for hayfields according to claim 1, characterized in that: An L-shaped column (86) is fixedly connected to the surface of the U-shaped plate (85). A third U-shaped block (810) is fixedly connected to the bottom end of the L-shaped column (86). A T-shaped rotating rod (814) is rotatably connected to the surface of the third U-shaped block (810). A movable rod (811) is rotatably connected to the inner wall of the third U-shaped block (810). One end of the T-shaped rotating rod (814) extends into the interior of the third U-shaped block (810) and is fixedly connected to the movable rod (811). A torsion spring (815) is sleeved on the surface of the T-shaped rotating rod (814) between the T-shaped rotating rod (814) and the third U-shaped block (810). One end of the torsion spring (815) is fixedly connected to the surface of the third U-shaped block (810), and the other end of the torsion spring (815) is fixedly connected to the T-shaped end of the T-shaped rotating rod (814). An ultrasonic sensor (813) is fixedly connected to the bottom end of the movable rod (811).

6. The no-till reseeding machine for hay clearing as described in claim 5, characterized in that: A counterweight ball (812) is fixedly connected to the surface of the movable rod (811) above the ultrasonic sensor (813).

7. The no-till reseeding machine for haymaking as described in claim 1, characterized in that: The support frame (6) is fixedly connected with L-shaped struts (9) at equal intervals on the side surface away from the trench shovel (84). The top of the L-shaped struts (9) is fixedly connected to an installation platform (91). The installation platform (91) is fixedly connected to the support frame (6). A fertilizer tank (92) and a water pump (94) are fixedly installed on the surface of the installation platform (91). A medicine inlet pipe (93) is fixedly connected to the water inlet of the water pump (94). The medicine inlet pipe (93) is fixedly connected to the outlet of the fertilizer tank (92). The water pump (94) is fixedly connected to a medicine outlet pipe (95), and a multi-port pipe (96) is fixedly connected to the end of the medicine outlet pipe (95). A reinforcing plate (97) is fixedly connected between the multi-port pipe (96) and the installation platform (91). Spray nozzles (98) are fixedly connected at equal intervals on the bottom surface of the multi-port pipe (96). The installation position of the spray nozzles (98) and the trenching shovel (84) are on the same straight line, so that the medicine sprayed by the spray nozzles (98) covers the trench formed by the trenching shovel (84).

8. The no-till reseeding machine for hay clearing as described in claim 1, characterized in that: A U-shaped frame (3) is fixedly connected between the two mounting plates (5), and mounting ear plates (4) are symmetrically fixedly connected to the surface of the U-shaped frame (3). The mounting ear plates (4) are used to connect with the external vehicle body.

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