Rice plant protection machine

Abstract

The invention relates to the technical field of rice planting, in particular to a rice plant protection machine which comprises a frame body, a first connecting frame is fixedly installed on one side of the frame body, a first rotating roller is rotatably installed on the first connecting frame, a second connecting frame is rotatably installed on the other side of the frame body, and a second rotating roller is rotatably installed on the second connecting frame. A placement box is arranged at the top of the middle of the frame; the extrusion assembly is arranged in the placement box, and the extrusion assembly is used for extruding the fertilizer in the placement box; the opening and closing assembly comprises an opening and closing module and an adjusting module, the opening and closing module is used for controlling fertilizer application, and the adjusting module is used for adjusting the opening and closing interval time of the opening and closing module. Compared with the prior art, by arranging the opening and closing module, the fertilizing precision is improved, the differentiated fertilizing requirements of different plots and crops are met, meanwhile, the risk of equipment shutdown caused by fertilizer blockage is reduced, and the overall operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rice planting, and in particular to a rice plant protection machine. Background Art

[0002] Rice plant protection machinery is mechanical equipment specially used for pest and disease control, fertilization, and field management during the rice planting process. It is often used to improve agricultural production efficiency and accuracy. As for the fertilization direction, fertilizer spreaders are usually used to achieve precise fertilization management during the rice growth stage.

[0003] In the prior art, due to the single way of opening the fertilizer port, once the discharge port is opened, fertilizer is prone to pour out in large quantities instantly, resulting in accumulation or excessive fertilization, which in turn blocks the channel, affects the uniformity of fertilization, and may even cause equipment shutdown or damage. In addition, traditional machinery usually relies on replacing baffles of different specifications or manually adjusting the size of the discharge port to control the amount of fertilizer. Not only is the adjustment process complicated and time-consuming, but it also requires shutdown operations, which seriously affects work efficiency and is difficult to meet the dynamic needs of different crops or plots for fertilizer amounts. Therefore, the present application discloses a rice plant protection machinery. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a rice plant protection machinery to solve the problem that the fertilizer port has a single opening method, once the discharge port is opened, the fertilizer is easy to pour out in large quantities instantly, resulting in accumulation or excessive fertilization, and traditional machinery usually relies on replacing baffles of different specifications or manually adjusting the size of the discharge port to control the amount of fertilizer.

[0005] Based on the above purpose, the present invention provides a rice plant protection machinery, including a frame body, a first connecting frame is fixedly installed on one side of the frame body, a first rotating roller is rotatably installed on the first connecting frame, a second connecting frame is rotatably installed on the other side of the frame body, a second rotating roller is rotatably installed on the second connecting frame, two adjusting screws are arranged on one side of the frame body close to the second connecting frame, the adjusting screws are threadedly connected to the second connecting frame, a driving motor is arranged on one side of the second connecting frame, a transmission box is arranged on the output end of the driving motor, two transmission shafts are arranged on the transmission box, one end of one of the transmission shafts is fixedly connected to the rotating shaft of the second rotating roller, and the other transmission shaft is fixedly connected to a connecting rod, and a placement box is arranged on the top middle part of the frame body;

[0006] An extrusion assembly, the extrusion assembly is arranged inside the placement box, and the extrusion assembly is used to extrude the fertilizer in the placement box;

[0007] An opening and closing component is arranged at the bottom discharge port of the extrusion component. The opening and closing component includes an opening and closing module and an adjusting module. The opening and closing module is used to control fertilizer application, and the adjusting module is used to adjust the opening and closing interval time of the opening and closing module.

[0008] Preferably, the extrusion assembly includes two driving rods rotatably installed inside the placement box, and a plurality of discharge barrels fixedly installed below the driving rods, a plurality of spiral conveying rods are rotatably installed below the bottom of the driving rods, and the plurality of spiral conveying rods are downwardly embedded in the interior of the discharge barrels, the driving rods and the plurality of spiral conveying rods are transmission connected by bevel gears, a rotating rod is also rotatably installed in the middle of the placement box, one side of the rotating rod is also transmission connected to the connecting rod by bevel gears, the other end of the rotating rod is fixedly connected to a first connecting wheel, and the two ends of the driving rod are respectively fixedly connected to a second connecting wheel and a third connecting wheel, the first connecting wheel and one of the second connecting wheels are jointly sleeved with a first chain, and the two third connecting wheels are jointly sleeved with a second chain.

[0009] Preferably, a plurality of fixed blocks corresponding to the discharge barrel are fixedly installed at the bottom of the placement box, and sliding frames are slidably installed on the outer surfaces of the plurality of fixed blocks. A front baffle is provided on the side of the sliding frame away from the corresponding discharge barrel, and connecting blocks are also provided on both sides of the sliding frame, and connecting plates are slidably installed on two of the connecting blocks, and a dividing plate is provided on one side of the two connecting plates, and one end of the two dividing plates is fitted together, and the two dividing plates are arranged in a trumpet shape as a whole.

[0010] Preferably, a first return spring is sleeved on the top outer surface of the fixed block, and the bottom of the first return spring is fixedly connected to the top of the sliding frame.

[0011] Preferably, the opening and closing module includes a fixed ring and a rotating ring arranged at the bottom of the discharging barrel, and the discharging barrel is arranged in a double-layer manner. The fixed ring is fixedly connected to the outer layer of the discharging barrel, and the rotating ring is rotatably installed between the inner and outer layers of the discharging barrel. A plurality of opening and closing plates are also rotatably installed on the fixed ring, and a plurality of transmission plates are rotatably installed on a side of the rotating ring close to the fixed ring, and a plurality of transmission plates are rotatably connected to one side of a plurality of opening and closing plates respectively, and a plurality of first limit grooves are provided on the top of the rotating ring, and a plurality of limit columns sliding in the first limit grooves are provided on a side of the fixed ring close to the rotating ring.

[0012] Preferably, trigger rods are fixedly connected to both sides of a side of the rotating ring away from the fixed ring, and trigger blocks are provided on the two trigger rods. The bottom end of the discharging barrel is also fixedly connected to a reciprocating screw rod, and a reciprocating ring is threadedly connected to the reciprocating screw rod, and the reciprocating ring is provided with a first extension rod and a second extension rod on both sides. The first extension rod and the second extension rod are respectively provided with a first push block and a second push block, the first push block is positioned lower than the second push block, and one side of the top surface of the first push block is an inclined surface, and one side of the bottom surface of the second push block is an inclined surface, and the first extension rod and the second extension rod both pass through the inner layer of the discharging barrel to between the inner layer and the outer layer of the discharging barrel.

[0013] Preferably, adapter grooves having the same length as the reciprocating screw rod are provided on both sides of the inner layer of the discharge barrel to facilitate the sliding of the first extension rod and the second extension rod, and corresponding sealing plates are provided inside the adapter grooves.

[0014] Preferably, the adjustment module includes slide grooves opened on both sides of the discharging barrel, the slide grooves penetrate the inner and outer layers of the discharging barrel, a limit ring is arranged in the inner middle part of the discharging barrel, the limit ring is sleeved on the outer surface of the reciprocating screw rod, telescopic rods are arranged on both sides of the limit ring, the telescopic rods penetrate the inner layer of the discharging barrel, one side of the telescopic rod is fixedly connected to a limit plate, a plurality of second limit grooves are opened on the inner side of the slide groove located on the outer layer of the discharging barrel, the limit plate is adapted to the plurality of second limit grooves, a pressing block is arranged on one side of the limit plate, the pressing block penetrates the outer layer of the discharging barrel, and a second return spring is sleeved on the outer surface of the telescopic end of the second limit groove.

[0015] Preferably, the spacing between the second limiting grooves corresponds to the reciprocating connection of the reciprocating screw rod.

[0016] Preferably, sealing plates are provided on both the inner and outer slide grooves of the discharge barrel.

[0017] Beneficial effects of the present invention:

[0018] 1. This rice plant protection machinery is provided with an opening and closing module. The rotating ring is installed between the inner and outer layers of the discharge barrel and cooperates with the fixed ring to form a stable rotating structure. During the fertilization process, it can be accurately opened and closed according to the push-pull action of the reciprocating screw rod. The transmission plate is linked with the opening and closing plate. When the reciprocating ring approaches, the first push block at the low position first passes under the trigger block, and then the second push block at the high position pushes the trigger rod to rotate the rotating ring, driving the opening and closing plate to gradually open, so that the discharge port is opened and the fertilizer is discharged. The whole process realizes staggered operation through height difference, avoids instantaneous and large-scale dumping of fertilizer, ensures that the fertilization process is uniform and controllable, and improves the fertilization accuracy. After the fertilization is completed, the reciprocating screw moves in the opposite direction, the second push block first contacts the trigger block, pushes the opening and closing plate to partially close, and then the first push block continues to push the misplaced trigger block to reset, so that the opening and closing plate is completely closed, and the fertilization is finished. This misplacement reset design effectively prevents fertilizer residue from clogging the discharge port, reduces mechanical loss and maintenance frequency, improves equipment stability and durability, and ensures a continuous and smooth fertilization process. The staged misplaced opening and closing mechanism can reduce fertilizer accumulation, prevent excessive or insufficient fertilization, improve fertilization accuracy, and meet the differentiated fertilization needs of different plots and crops. At the same time, it reduces the risk of equipment shutdown due to fertilizer blockage and improves overall operating efficiency.

[0019] 2. This rice plant protection machinery is provided with an adjustment module, a limit ring is sleeved on the outer surface of the reciprocating screw rod, and is connected to the limit plate through a telescopic rod, so that the limit plate moves up and down in the slide groove, and cooperates with the second limit groove to limit step by step. When the amount of fertilizer needs to be adjusted, the pressing block is pressed to insert the limit plate into different second limit grooves to limit the sliding distance of the limit ring on the reciprocating screw rod, thereby changing the stroke length of the reciprocating ring. Each time the position of the limit ring is adjusted, the second limit groove fixes the limit plate to ensure that the amount of fertilizer remains stable, and the spacing of the second limit groove is consistent with the spacing of the reciprocating screw rod. The reciprocating nodes correspond to each other to achieve precise stroke control. When the limit ring is adjusted to the shortest stroke, it is smaller than the height difference between the first push block and the second push block, ensuring that the discharge port remains open for a long time to meet the needs of long-term continuous fertilization. The adjustment module can quickly adjust the amount of fertilizer under different operating requirements without the need for complex tools or downtime operations, thereby improving operational convenience. The sealing plate is arranged inside the slide to ensure that fertilizer overflow is prevented during the sliding adjustment process, keep the equipment clean, reduce fertilizer waste, extend the service life of the equipment, and meet the needs of variable fertilization and precision agriculture in multiple plots. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention when viewed from the first perspective;

[0024] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 5 This is a schematic diagram of the structure of the present invention when viewed from a second viewing angle;

[0026] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0027] Figure 7 It is a schematic diagram of the structure of the discharge barrel of the present invention;

[0028] Figure 8 This is a schematic diagram of the opening and closing module structure of the present invention;

[0029] Fig. 9 This is a schematic diagram of the top view of the discharge barrel of the present invention;

[0030] Fig.10 It is a schematic diagram of the cross-sectional structure of the discharge barrel of the present invention;

[0031] Fig.11 For the present invention Fig.10 The enlarged structural diagram at C in the middle;

[0032] Fig.12 It is a schematic diagram of the sealing plate structure of the present invention.

[0033] The markings in the figure are:

[0034] 1. Frame; 2. First connecting frame; 3. First rotating roller; 4. Second connecting frame; 5. Second rotating roller; 6. Adjusting screw rod; 7. Driving motor; 8. Linking rod; 9. Placement box; 10. Rotating rod; 11. Driving rod; 12. First connecting wheel; 13. Second connecting wheel; 14. Third connecting wheel; 15. First chain; 16. Second chain; 17. Discharging barrel; 18. Screw conveying rod; 19. Fixed block; 20. Sliding frame; 21. First return spring; 22. Front baffle; 23. Connecting block; 24. Connecting plate; 25, dividing plate; 26, fixing ring; 27, rotating ring; 28, opening and closing plate; 29, transmission plate; 30, first limiting groove; 31, limiting column; 32, trigger rod; 33, trigger block; 34, reciprocating screw rod; 35, reciprocating ring; 36, first extension rod; 37, first push block; 38, second extension rod; 39, second push block; 40, slide groove; 41, limiting ring; 42, second limiting groove; 43, telescopic rod; 44, limiting plate; 45, pressing block; 46, second return spring; 47, sealing plate. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] like Figures 1 to 12As shown, the rice plant protection machinery includes a frame 1, a first connecting frame 2 is fixedly installed on one side of the frame 1, a first rotating roller 3 is rotatably installed on the first connecting frame 2, a second connecting frame 4 is rotatably installed on the other side of the frame 1, a second rotating roller 5 is rotatably installed on the second connecting frame 4, two adjusting screws 6 are arranged on one side of the frame 1 close to the second connecting frame 4, the adjusting screws 6 are threadedly connected to the second connecting frame 4, a driving motor 7 is arranged on one side of the second connecting frame 4, a transmission box is arranged at the output end of the driving motor 7, two transmission shafts are arranged on the transmission box, one end of one transmission shaft is fixedly connected to the rotating shaft of the second rotating roller 5, and the other transmission shaft is fixedly connected to a connecting rod 8, a placement box 9 is arranged at the top of the middle part of the frame 1; an extrusion assembly, the extrusion assembly is arranged inside the placement box 9, and the extrusion assembly is used to extrude the fertilizer in the placement box 9; an opening and closing assembly, the opening and closing assembly is arranged at the bottom discharge port of the extrusion assembly, the opening and closing assembly includes an opening and closing module and an adjustment module, the opening and closing module is used to control the fertilizer application, and the adjustment module is used to adjust the opening and closing interval time of the opening and closing module;

[0038] After starting the rice plant protection machinery, the driving motor 7 drives the two transmission shafts in the transmission box to rotate synchronously, one of the transmission shafts drives the second rotating roller 5 to rotate, drives the linkage rod 8 to move, so that the fertilizer is gradually extruded through the extrusion component in the placement box 9. After the fertilizer is discharged from the outlet, the opening and closing component controls the amount of fertilizer, the opening and closing module dynamically opens and closes according to the fertilization needs of the rice, and the adjustment module adjusts the fertilization interval in real time to make the fertilizer evenly spread in the farmland. When the amount of fertilizer needs to be changed or the terrain changes, the operator rotates the adjustment screw 6 to change the position of the second rotating roller 5 to adapt to different fields, ensure that the fertilization effect is continuous and stable, and ultimately improve the rice yield and quality. The extrusion component can effectively squeeze the fertilizer in the placement box 9 evenly, prevent blockage or accumulation during fertilization, make the fertilizer more evenly distributed in the field, improve the utilization rate of fertilizer, and help the growth and development of rice. The opening and closing component controls the amount of fertilizer through the opening and closing module, and the adjustment module can accurately adjust the fertilization time interval to avoid excessive or insufficient fertilizer, so as to achieve precise fertilization of rice at different growth stages, reduce waste and reduce costs.

[0039] like Figures 1 to 6As shown, the extrusion assembly includes two driving rods 11 rotatably mounted inside the placement box 9, and a plurality of discharge barrels 17 fixedly mounted below the driving rods 11, a plurality of spiral conveying rods 18 are rotatably mounted below the bottom of the driving rods 11, and the plurality of spiral conveying rods 18 are downwardly embedded in the discharge barrel 17, the driving rods 11 and the plurality of spiral conveying rods 18 are transmission-connected through bevel gears, a rotating rod 10 is also rotatably mounted in the middle of the placement box 9, one side of the rotating rod 10 is also transmission-connected with the linkage rod 8 through bevel gears, the other end of the rotating rod 10 is fixedly connected with a first connecting wheel 12, and the two ends of the driving rod 11 are respectively fixedly connected with a second connecting wheel 13 and a third connecting wheel 14, the first connecting wheel 12 and one of the second connecting wheels 13 are jointly sleeved with a first chain 15, and the two third connecting wheels 14 are jointly sleeved with a second chain 16;

[0040] After starting the equipment, the driving motor 7 drives the transmission shaft in the transmission box to rotate, and the transmission shaft drives the rotating rod 10 to rotate through the connecting rod 8. The first connecting wheel 12 on the rotating rod 10 drives the first chain 15 to rotate, so that the second connecting wheels 13 at both ends of the driving rod 11 rotate synchronously. The rotation of the driving rod 11 drives the spiral conveying rod 18 to rotate through the bevel gear. The fertilizer gradually moves down from the placement box 9, enters the discharge barrel 17 and is squeezed out through the spiral conveying rod 18, so as to realize accurate multi-point synchronous fertilization. When the amount of fertilizer needs to be adjusted, by changing the transmission speed ratio of the rotating rod 10 and the connecting rod 8, the rotation speed of the spiral conveying rod 18 is adjusted to control the amount of fertilizer, ensure uniform and stable fertilization, and improve the operation efficiency and fertilization quality of the rice plant protection machinery;

[0041] A plurality of fixed blocks 19 corresponding to the discharge barrel 17 are also fixedly installed at the bottom of the placement box 9, and a sliding frame 20 is slidably installed on the outer surface of the plurality of fixed blocks 19, and a front baffle 22 is provided on the side of the sliding frame 20 away from the corresponding discharge barrel 17, and connecting blocks 23 are also provided on both sides of the sliding frame 20, and connecting plates 24 are slidably installed on the two connecting blocks 23, and a dividing plate 25 is provided on one side of the two connecting plates 24, and one end of the two dividing plates 25 is fitted, and the two dividing plates 25 are arranged in a trumpet shape as a whole, and a first return spring 21 is sleeved on the top outer surface of the fixed block 19, and the bottom of the first return spring 21 is fixedly connected to the top of the sliding frame 20;

[0042] After starting the equipment, the second rotating roller 5 moves in the field, the sliding frame 20 slides on the surface of the fixed block 19, and the front baffle 22 first pushes the surface soil to open a shallow ditch. As the equipment moves forward, the dividing plate 25 gradually expands the width of the soil ditch and pushes the soil to both sides to form a regular groove. Subsequently, the spiral conveying rod 18 squeezes out the fertilizer and accurately falls into the groove to achieve deep fertilization in the lower layer. After fertilization is completed, the second rotating roller 5 continues to rotate to backfill the soil into the groove to cover the fertilizer and complete the soil covering operation to ensure that the fertilizer is buried in the soil, effectively preventing the fertilizer from being lost or volatilized, and realizing the integrated operation of fertilization and soil covering. The front baffle 22 on the sliding frame 20 pushes the surface soil before fertilization to open a ditch in advance for the fertilization operation, reducing the use of manpower or additional equipment. The dividing plate 25 is trumpet-shaped, which evenly disperses the pushed soil to both sides to form a regular groove, creating a stable working environment for fertilizer application, realizing the synchronous operation of trenching, fertilizing and soil covering, and improving the continuity and efficiency of the operation.

[0043] like Figures 5 to 8 As shown, the opening and closing module includes a fixed ring 26 and a rotating ring 27 arranged at the bottom of the discharge barrel 17. The discharge barrel 17 is double-layered. The fixed ring 26 is fixedly connected to the outer layer of the discharge barrel 17, and the rotating ring 27 is rotatably installed between the inner and outer layers of the discharge barrel 17. A plurality of opening and closing plates 28 are also rotatably installed on the fixed ring 26. A plurality of transmission plates 29 are rotatably installed on a side of the rotating ring 27 close to the fixed ring 26. The plurality of transmission plates 29 are rotatably connected to one side of the plurality of opening and closing plates 28, respectively. A plurality of first limiting grooves 30 are provided above the rotating ring 27. A plurality of limiting columns 31 sliding in the first limiting grooves 30 are provided on a side of the fixed ring 26 close to the rotating ring 27. Trigger rods 32 are fixedly connected on both sides of a side of the rotating ring 27 away from the fixed ring 26, and trigger blocks 33 are provided on both trigger rods 32. The bottom end of the discharge barrel 17 is also fixedly connected to a reciprocating screw rod 34, and a reciprocating ring 35 is threadedly connected to the reciprocating screw rod 34. The reciprocating ring 35 is provided with a first extension rod 36 and a second extension rod 38 on both sides. The first extension rod 36 and the second extension rod 38 are provided with a first push block 37 and a second push block 39 respectively. The first push block 37 is located lower than the second push block 39, and one side of the top surface of the first push block 37 is an inclined surface, and one side of the bottom surface of the second push block 39 is an inclined surface. The first extension rod 36 and the second extension rod 38 both penetrate the inner layer of the discharge barrel 17 to between the inner layer and the outer layer of the discharge barrel 17. Both sides of the inner layer of the discharge barrel 17 are provided with adapter grooves of the same length as the reciprocating screw rod 34, which are used to facilitate the sliding of the first extension rod 36 and the second extension rod 38, and corresponding sealing plates 47 are provided inside the adapter grooves.

[0044] After starting the equipment, the screw conveying rod 18 delivers the fertilizer to the discharge barrel 17. As the reciprocating screw rod 34 rotates, the reciprocating ring 35 gradually approaches the opening and closing plate 28. The first push block 37 slides under the corresponding trigger block 33 without hindrance due to its lower position. Then, the second push block 39 contacts the second trigger block 33, pushing the trigger rod 32 to drive the rotating ring 27 to rotate, so that the opening and closing plate 28 is fully opened, and the fertilizer begins to be discharged. The trigger block 33 changes position after opening. The trigger block 33 at the position of the first push block 37 is located directly above the second push block 39, forming a dislocated state. When the fertilization is completed, the reciprocating ring 35 starts to reverse When moving away from the closing plate 28, due to the higher height of the second push block 39, it first contacts the trigger block 33 and pushes it to the closed position, and the opening and closing plate 28 is partially closed. The first push block 37 then continues to move, pushing the misaligned trigger block 33 to completely reset, and the opening and closing plate 28 is closed, and fertilization is completed. During the whole process, the staged misaligned opening and closing ensures uniform fertilization, prevents fertilizer accumulation or uneven discharge, and improves fertilization accuracy and operation efficiency. Through the height difference between the first push block 37 and the second push block 39, the push block misalignment reset mechanism ensures that the opening and closing plate 28 is gradually closed in a set order, reduces fertilizer blockage and accumulation, and ensures operation continuity.

[0045] like Figure 7 , Fig.10 , Fig.11 , Fig.12 As shown, the adjustment module includes a slide groove 40 opened on both sides of the discharge barrel 17, the slide groove 40 penetrates the inner and outer layers of the discharge barrel 17, a limit ring 41 is arranged in the middle of the inner part of the discharge barrel 17, the limit ring 41 is sleeved on the outer surface of the reciprocating screw rod 34, and telescopic rods 43 are arranged on both sides of the limit ring 41, the telescopic rod 43 penetrates the inner layer of the discharge barrel 17, and one side of the telescopic rod 43 is fixedly connected to the limit plate 44, and the slide groove 40 located on the outer layer of the discharge barrel 17 is fixedly connected to the limit plate 44. 0 is provided with a plurality of second limiting grooves 42 on the inner side, and the limiting plate 44 is adapted to the plurality of second limiting grooves 42. A pressing block 45 is provided on one side of the limiting plate 44, and the pressing block 45 penetrates the outer layer of the discharge barrel 17. A second return spring 46 is sleeved on the outer surface of the telescopic end of the second limiting groove 42. The spacing of the second limiting grooves 42 corresponds to the reciprocating connection of the reciprocating screw rod 34. A sealing plate 47 is provided on the inner and outer slide grooves 40 of the discharge barrel 17.

[0046] When the amount of fertilizer needs to be adjusted, the opening and closing timing of the opening and closing module can be adjusted, or the opening and closing module can be opened for a long time. At this time, the pressing blocks 45 on both sides can be pinched to drive the limit plate 44 to contact the limit of the second limit groove 42. At this time, the limit plate 44 is between the inner and outer layers of the other discharge barrels 17. At this time, the pressing block 45 can be slid up and down to drive the limit ring 41 to adjust on the reciprocating screw rod 34, and the spacing of the second limit groove 42 is just located at the reciprocating connection node where the reciprocating screw rod 34 is located. Therefore, each time the positioning ring is adjusted, it is moved to the second limit groove 42. The first push block 37 and the second push block 39 are fixed, and the shortest stroke is less than the height difference between the first push block 37 and the second push block 39. Therefore, when the shortest stroke is adjusted, the opening and closing module can be opened for a long time. The position of the limit ring 41 on the reciprocating screw rod 34 is dynamically adjusted by sliding the pressing block 45 up and down, so that the stroke length of the reciprocating ring 35 can be accurately controlled, and the amount of fertilizer can be flexibly adjusted. The limit plate 44 cooperates with the second limit groove 42 to limit at different positions, ensuring that the amount of fertilizer is accurately adjusted according to the needs of the plot and crop, and meeting the fertilization requirements of precision agriculture.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0048] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rice plant protection machine, characterized in that: include: A frame (1), a first connecting frame (2) is fixedly installed on one side of the frame (1), a first rotating roller (3) is rotatably installed on the first connecting frame (2), a second connecting frame (4) is rotatably installed on the other side of the frame (1), a second rotating roller (5) is rotatably installed on the second connecting frame (4), two adjusting screws (6) are arranged on the side of the frame (1) close to the second connecting frame (4), the adjusting screws (6) are threadedly connected to the second connecting frame (4), a driving motor (7) is arranged on one side of the second connecting frame (4), a transmission box is arranged at the output end of the driving motor (7), two transmission shafts are arranged on the transmission box, one end of one of the transmission shafts is fixedly connected to the rotating shaft of the second rotating roller (5), and the other transmission shaft is fixedly connected to a connecting rod (8), and a placement box (9) is arranged at the top of the middle part of the frame (1); An extrusion assembly, the extrusion assembly being arranged inside the placement box (9), and the extrusion assembly being used to extrude the fertilizer in the placement box (9); An opening and closing component is arranged at the bottom discharge port of the extrusion component. The opening and closing component includes an opening and closing module and an adjusting module. The opening and closing module is used to control fertilizer application, and the adjusting module is used to adjust the opening and closing interval time of the opening and closing module.

2. The rice plant protection machine according to claim 1, characterized in that: The extrusion assembly comprises two driving rods (11) rotatably mounted inside the placement box (9), and a plurality of discharge barrels (17) fixedly mounted below the driving rods (11); a plurality of spiral conveying rods (18) are rotatably mounted below the bottom of the driving rods (11); the plurality of spiral conveying rods (18) are downwardly embedded in the interior of the discharge barrels (17); the driving rods (11) and the plurality of spiral conveying rods (18) are connected in transmission via bevel gears; a rotating gear is also rotatably mounted in the middle of the placement box (9); A movable rod (10), one side of the rotating rod (10) is also transmission-connected with the connecting rod (8) via a bevel gear, the other end of the rotating rod (10) is fixedly connected with a first connecting wheel (12), the two ends of the driving rod (11) are respectively fixedly connected with a second connecting wheel (13) and a third connecting wheel (14), the first connecting wheel (12) and one of the second connecting wheels (13) are jointly sleeved with a first chain (15), and the two third connecting wheels (14) are jointly sleeved with a second chain (16).

3. The rice plant protection machine according to claim 2, characterized in that: The bottom of the placement box (9) is also fixedly mounted with a plurality of fixed blocks (19) corresponding to the discharge barrel (17); the outer surfaces of the plurality of fixed blocks (19) are slidably mounted with sliding frames (20); a front baffle (22) is provided on a side of the sliding frame (20) away from the corresponding discharge barrel (17); connecting blocks (23) are also provided on both sides of the sliding frame (20); connecting plates (24) are slidably mounted on two connecting blocks (23); a dividing plate (25) is provided on one side of the two connecting plates (24); one end of the two dividing plates (25) is arranged in a close fit; the two dividing plates (25) are arranged in a trumpet shape as a whole.

4. The rice plant protection machine according to claim 3, characterized in that: A first return spring (21) is sleeved on the top outer surface of the fixed block (19), and the bottom of the first return spring (21) is fixedly connected to the top of the sliding frame (20).

5. The rice plant protection machine according to claim 4, characterized in that: The opening and closing module comprises a fixed ring (26) and a rotating ring (27) arranged at the bottom of the discharge barrel (17); the discharge barrel (17) is double-layered, the fixed ring (26) is fixedly connected to the outer layer of the discharge barrel (17), the rotating ring (27) is rotatably installed between the inner and outer layers of the discharge barrel (17), a plurality of opening and closing plates (28) are also rotatably installed on the fixed ring (26), a plurality of transmission plates (29) are rotatably installed on a side of the rotating ring (27) close to the fixed ring (26), and a plurality of the transmission plates (29) are rotatably connected to one side of a plurality of the opening and closing plates (28), a plurality of first limiting grooves (30) are provided on the top of the rotating ring (27), and a plurality of limiting columns (31) sliding inside the first limiting grooves (30) are provided on a side of the fixed ring (26) close to the rotating ring (27).

6. The rice plant protection machine according to claim 5, characterized in that: The rotating ring (27) is fixedly connected to trigger rods (32) on both sides of a side away from the fixed ring (26), and the two trigger rods (32) are both provided with trigger blocks (33). The bottom end of the discharge barrel (17) is also fixedly connected to a reciprocating screw rod (34), and a reciprocating ring (35) is threadedly connected to the reciprocating screw rod (34). The reciprocating ring (35) is respectively provided with a first extension rod (36) and a second extension rod (38) on both sides. The first extension rod ( A first push block (37) and a second push block (39) are respectively arranged on the first extension rod (36) and the second extension rod (38), the first push block (37) is located lower than the second push block (39), and one side of the top surface of the first push block (37) is an inclined surface, and one side of the bottom surface of the second push block (39) is an inclined surface, and the first extension rod (36) and the second extension rod (38) both penetrate the inner layer of the discharge barrel (17) to between the inner layer and the outer layer of the discharge barrel (17).

7. The rice plant protection machine according to claim 6, characterized in that: Adaptation grooves having the same length as the reciprocating screw rod (34) are provided on both sides of the inner layer of the discharge barrel (17) to facilitate the sliding of the first extension rod (36) and the second extension rod (38), and corresponding sealing plates (47) are provided inside the adaptation grooves.

8. The rice plant protection machine according to claim 7, characterized in that: The regulating module comprises slide grooves (40) provided on both sides of the discharge barrel (17), the slide grooves (40) being provided through the inner and outer layers of the discharge barrel (17), a limiting ring (41) being provided in the inner middle part of the discharge barrel (17), the limiting ring (41) being sleeved on the outer surface of the reciprocating screw rod (34), telescopic rods (43) being provided on both sides of the limiting ring (41), the telescopic rods (43) being provided through the inner layer of the discharge barrel (17), the telescopic rods ( A limiting plate (44) is fixedly connected to one side of the discharge barrel (43), and a plurality of second limiting grooves (42) are provided on the inner side of the slide groove (40) located on the outer layer of the discharge barrel (17). The limiting plate (44) is adapted to the plurality of second limiting grooves (42). A pressing block (45) is provided on one side of the limiting plate (44), and the pressing block (45) passes through the outer layer of the discharge barrel (17). A second return spring (46) is sleeved on the outer surface of the telescopic end of the second limiting groove (42).

9. The rice plant protection machine according to claim 8, characterized in that: The spacing between the second limiting grooves (42) corresponds to the reciprocating connection of the reciprocating screw rod (34).

10. The rice plant protection machine according to claim 9, characterized in that: Sealing plates (47) are provided on both the inner and outer slide grooves (40) of the discharge barrel (17).

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