Granular fertilizer applying device

Abstract

The utility model provides a granular fertilizer applying device which comprises a horizontally arranged bottom plate, two symmetrical and vertical fixed frames are fixed at the edge of the top surface of the bottom plate, two groups of movable frames parallel to the fixed frames are movably arranged on the top surface of the bottom plate, each group of movable frames comprises two movable frames, and the movable frames are arranged on the bottom plate. The bottom plate is provided with a first driving assembly used for driving each set of movable frame to move in the horizontal direction, horizontal supporting strips are movably arranged between the two fixed frames and each set of movable frame, and the fixed frames and each set of movable frame are provided with second driving assemblies used for driving the supporting strips to move in the vertical direction. According to the utility model, the automation degree is high, the digging mechanism, the storage mechanism, the fertilizer discharging mechanism and the soil covering mechanism are arranged, the second driving assembly is utilized, three steps of digging, fertilizer applying and soil covering can be realized in sequence without manpower, and meanwhile, the first driving assembly and the movable frame are arranged, so that the distance between pits to be dug can be accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural fertilization, in particular to a granular fertilizer fertilization device. Background Art

[0002] During the planting period of crops, solid granular fertilizers need to be applied to meet the nutritional needs of crops in different growth cycles; for example, solid granular fertilizers such as compound fertilizers and potash fertilizers are applied to crops.

[0003] For example, the Chinese invention patent with patent number CN116803239B provides a fertilization cart for agricultural planting solid granular fertilizer, including a fertilization mechanism; the fertilization mechanism includes a fertilization box, and a fertilizer bin is fixedly arranged in the upper inner cavity of the fertilization box; a discharge bin is fixedly arranged in the lower inner cavity of the fertilization box through a bracket support, and the top opening of the discharge bin is communicated with the bottom outlet of the fertilizer bin through a discharge port; a fertilizer discharge pipe is arranged on the bottom plate of the fertilization box, and the fertilizer discharge pipe is communicated with the lower opening of the discharge bin through a discharge cavity; a fertilizer roller group is arranged in the discharge bin.

[0004] Although the above device solves the problem of single fertilizer application amount, when using the device, if the fertilizer is directly spread on the soil surface and exposed to the air, the fertilizer easily absorbs water and deliquesces, and at the same time, it is easy to volatilize when exposed to light, resulting in loss of fertilizer efficiency and being unfavorable for crop absorption. Therefore, the staff needs to manually dig a pit before fertilization, spread the fertilizer in the soil pit, and then manually fill the pit. The whole operation process is very cumbersome, time-consuming and labor-intensive. Summary of the invention

[0005] The utility model discloses a granular fertilizer fertilizing device, which solves the problem that the traditional granular fertilizer fertilizing device has a low degree of automation. Before fertilizing, the staff needs to dig a hole manually, spread the fertilizer in the earth pit, and then fill the pit manually. The whole operation process is very cumbersome, time-consuming and labor-intensive.

[0006] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions:

[0007] A granular fertilizer applying device comprises a horizontally arranged bottom plate, two symmetrical and vertical fixed frames are fixed at the edge of the top surface of the bottom plate, two groups of movable frames parallel to the fixed frames are movably arranged on the top surface of the bottom plate, each group of movable frames is set as two, a first driving component for driving each group of movable frames to move in a horizontal direction is arranged on the bottom plate, and the movement trajectories of each group of movable frames do not interfere with each other, horizontal support bars are movably arranged between the two fixed frames and each group of movable frames, a second driving component for driving the support bars to move in a vertical direction is arranged on the fixed frame and each group of movable frames, a digging mechanism is arranged on the support bar between the two fixed frames, a fertilizer discharging mechanism and a soil covering mechanism are arranged on the support bar between each group of movable frames, and the soil covering mechanism is arranged away from the digging mechanism, a fertilizer storage mechanism is fixed on the top surface of the bottom plate, the fertilizer storage mechanism is located between the fertilizer discharging mechanism and the soil covering mechanism, and the fertilizer storage mechanism is connected with the fertilizer discharging mechanism, a cavity for the digging mechanism, the fertilizer discharging mechanism and the soil covering mechanism to move is opened on the bottom plate, so that the digging mechanism, the fertilizer discharging mechanism and the soil covering mechanism can all contact with the ground; and a plurality of walking wheels are arranged on both sides of the bottom plate.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] Add the required solid granular fertilizer to the fertilizer storage mechanism and store the fertilizer in advance to prevent the situation that the fertilizer is insufficient during the fertilization process; after the preparation work is completed, the second driving assembly is used to drive the digging mechanism to descend so that the digging mechanism contacts the ground, thereby forming a pit to be fertilized on the surface of the soil; while the digging mechanism is digging, the granular fertilizer in the fertilizer storage mechanism is transported to the fertilizer discharge mechanism. When the digging is completed, the walking wheel is used to move the device forward and align the fertilizer discharge mechanism with the pit. The second driving assembly is also used to make the fertilizer discharge mechanism contact the ground, thereby completing the fertilization action; while fertilizing, the digging mechanism can also dig the next pit. In addition, the first driving assembly can be used to move the movable frame to achieve the purpose of controlling the distance between the pits; after the fertilization action is completed, the second driving assembly and the covering mechanism are also used to cover the fertilized pit, effectively avoiding the loss of fertilizer efficiency caused by the fertilizer being exposed to the air. The utility model has a high degree of automation. By arranging a digging mechanism, a material storage mechanism, a fertilizer discharge mechanism and a soil covering mechanism, and utilizing a second drive component, the steps of digging, fertilizing and soil covering can be sequentially realized without manual labor. At the same time, a first drive component and a movable frame are also arranged, which can accurately control the distance between the soil pits to be excavated. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view schematic diagram of the utility model;

[0011] Figure 2 It is a top view schematic diagram of the utility model;

[0012] Figure 3 It is a side sectional view of the digging mechanism of the utility model;

[0013] Figure 4 It is a side sectional view of the fertilizer storage mechanism of the utility model;

[0014] Figure 5 It is a side sectional view of the fertilizer discharging mechanism of the utility model;

[0015] Figure 6 It is a front view schematic diagram of the fixing sleeve of the utility model;

[0016] Figure 7 It is a top view schematic diagram of the pressing plate of the utility model;

[0017] Figure 8 It is a side sectional view of the soil covering mechanism of the utility model;

[0018] Fig. 9 It is a side sectional view of the fixing cylinder of the utility model;

[0019] Fig.10 It is a top sectional view of the fixing cylinder of the utility model;

[0020] In the figure:

[0021] 1. Bottom plate; 11. Fixed frame; 12. Movable frame; 13. Cavity; 14. Slideway; 15. Travel wheel;

[0022] 2. digging mechanism; 21. first motor; 22. drill bit; 23. sleeve; 24. opening; 25. fixing ring;

[0023] 3. Fertilizer storage mechanism; 31. Cylinder; 32. Feed inlet; 33. Discharge outlet; 331. Feeding pipe; 34. Stirring shaft; 341. Second motor; 342. Stirring paddle; 35. Screen plate; 36. Slide plate; 37. Connecting rod; 38. First electric push rod; 39. Support ring; 391. Support leg;

[0024] 4. Fertilizer discharging mechanism; 41. Connecting plate; 42. Fixed plate; 43. Fixed sleeve; 431. First fertilizer discharging cylinder; 44. Cover plate; 45. Movable sleeve; 46. Pressing plate; 461. Sliding groove; 47. Second fertilizer discharging cylinder;

[0025] 5. Soil covering mechanism; 51. Soil covering cylinder; 52. Fixed cylinder; 53. Second electric push rod; 54. Inner groove; 55. Soil covering plate; 56. Third electric push rod; 57. Third motor; 58. Brush plate;

[0026] 6. Support bar; 61. Hydraulic cylinder; 62. Sliding block; 63. Limiting block; 64. Side groove; 65. Fourth motor; 66. Bidirectional screw rod; 67. Sliding cavity;

[0027] 7. Push plate; 71. Cylinder; 72. Guide block. DETAILED DESCRIPTION

[0028] The specific contents of the utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 and Figure 2 As shown, the utility model provides a granular fertilizer applying device, comprising a horizontally arranged bottom plate 1, two symmetrical and vertical fixed frames 11 are fixed at the top edge of the bottom plate 1, two groups of movable frames 12 parallel to the fixed frames 11 are movably arranged on the top surface of the bottom plate 1, and each group of movable frames 12 is provided with two, and a first driving component for driving each group of movable frames 12 to move in a horizontal direction is provided on the bottom plate 1, and the movement trajectories of each group of movable frames 12 do not interfere with each other, horizontal support bars 6 are movably arranged between the two fixed frames 11 and each group of movable frames 12, and a support bar 6 for driving the support bar 6 to move in a vertical direction is provided on the fixed frame 11 and each group of movable frames 12. The second driving assembly moving upwards, the support bar 6 between the two fixed frames 11 is provided with a digging mechanism 2, the support bar 6 between each group of movable frames 12 is provided with a fertilizer discharging mechanism 4 and a soil covering mechanism 5, and the soil covering mechanism 5 is arranged away from the digging mechanism 2, the top surface of the bottom plate 1 is fixed with a fertilizer storage mechanism 3, the fertilizer storage mechanism 3 is located between the fertilizer discharging mechanism 4 and the soil covering mechanism 5, and the fertilizer storage mechanism 3 is connected with the fertilizer discharging mechanism 4, and the bottom plate 1 is provided with a cavity 13 for the digging mechanism 2, the fertilizer discharging mechanism 4 and the soil covering mechanism 5 to move, so that the digging mechanism 2, the fertilizer discharging mechanism 4 and the soil covering mechanism 5 can all contact the ground; a plurality of running wheels 15 are provided on both sides of the bottom plate 1. By installing a handle (not shown) that can be pushed and pulled manually on the bottom plate 1, or by connecting the bottom plate 1 with an external driving device, the running wheels 15 can be used to drive the entire device to move, so that the digging mechanism 2, the fertilizer storage mechanism 3, the fertilizer discharging mechanism 4 and the soil covering mechanism 5 can be used to sequentially complete the steps of digging, fertilizing and soil covering.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, the digging mechanism 2 includes a first motor 21 arranged on the top surface of the support bar 6, and a drill bit 22 located below the support bar 6 and in a vertical position is fixed to the output end of the first motor 21. A sleeve 23 that can surround the drill bit 22 is provided on the bottom surface of the support bar 6, and an opening 24 is provided on the upper end surface of the sleeve 23. The bottom end of the sleeve 23 is open, and a fixing ring 25 that is tilted downward is fixed to the surface of the sleeve 23. By using the second driving component to drive the support bar 6 to descend, the drill bit 22 and the sleeve 23 can be driven to descend, and the first motor 21 is started at the same time. The output end of the first motor 21 drives the drill bit 22 to rotate, thereby breaking the soil surface, and the excavated soil blocks are crushed by the drill bit 22 and enter between the drill bit 22 and the sleeve 23. Since an opening 24 is provided on the upper end surface of the sleeve 23, as the drill bit 22 continues to move downward, the crushed soil between the drill bit 22 and the sleeve 23 will be squeezed and discharged from the opening 24. The setting of the fixing ring 25 can effectively prevent the discharged crushed soil from falling back into the pit and accumulate it at the outer edge of the pit, which is beneficial to the subsequent soil backfilling operation.

[0031] like Figure 1 , Figure 2 and Figure 4As shown, the fertilizer storage mechanism 3 includes a cylinder body 31 which is vertically arranged above the bottom plate 1 and is in a cylindrical shape. The top and bottom ends of the cylinder body 31 are respectively connected with a feed port 32 and a discharge port 33. The discharge port 33 is connected with a discharge pipe 331 whose end is connected to the fertilizer discharge mechanism 4. A vertical stirring shaft 34 is arranged in the cylinder body 31. A second motor 341 for driving the stirring shaft 34 to rotate around its own axis is arranged on the cylinder body 31. A stirring paddle 342 is fixed on the stirring shaft 34. A horizontally arranged sieve plate 35 is fixed in the cylinder body 31. The sieve plate 35 is located below the stirring paddle 342. A horizontally arranged slide plate 36 is slidably connected to the cylinder body 31. The bottom surface of the slide plate 36 contacts the top surface of the sieve plate 35. One end of the slide plate 36 passes through the cylinder body 31 and extends outside the cylinder body 31. A third driving component for driving the slide plate 36 to cover or open the sieve holes on the sieve plate 35 is provided on the cylinder body 31. The third driving assembly is used to make the slide plate 36 cover the sieve holes on the sieve plate 35, pour the granular fertilizer into the cylinder 31 from the feed port 32, and start the second motor 341. The output end of the second motor 341 drives the stirring paddle 342 to rotate around the stirring shaft 24. If the fertilizer input is a variety of mixed fertilizers, it can be stirred evenly. When it is necessary to transport the fertilizer to the fertilizer discharge mechanism 4, the third driving assembly is used to move the slide plate 36 out to open the sieve holes on the sieve plate 35. As the stirring paddle 342 rotates, the fertilizer will fall evenly from the sieve plate 35, thereby achieving the purpose of uniform discharge; preferably, holes can be opened on the slide plate 36 and the holes on the slide plate 36 can be staggered with the sieve holes on the sieve plate 35. When in use, it is only necessary to slightly control the stroke of the slide plate 36 so that the holes on the slide plate 36 are aligned with the sieve holes on the sieve plate 35, so that the fertilizer can fall, and the slide plate 36 with holes can also be used to adjust the aperture of the sieve holes on the sieve plate 35.

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, the third driving assembly includes a first electric push rod 38 horizontally fixed on the cylinder 31, a connecting rod 37 is fixed to the output end of the first electric push rod 38, and the other end of the connecting rod 37 is fixedly connected to the end of the slide plate 36 located outside the cylinder 31; a support ring 39 is fixed to the outer surface of the cylinder 31, and a vertical support leg 391 is fixed to the support ring 39, and the bottom end of the support leg 391 is fixedly connected to the top surface of the bottom plate 1. When the first electric push rod 38 is started, the telescopic end of the first electric push rod 38 pushes the connecting rod 37 close to or away from the cylinder 31, so that the slide plate 36 can be moved in the horizontal direction, thereby controlling the slide plate 36 to cover or open the sieve holes on the sieve plate 35; and the setting of the support ring 39 and the support leg 391 can not only fix and support the cylinder 31, but also lift the cylinder 31, so that the fertilizer conveying process is easier.

[0033] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the fertilizer discharge mechanism 4 includes a connecting plate 41 vertically arranged on the bottom surface of the support bar 6, a horizontally arranged fixing plate 42 is fixed to one end of the connecting plate 41 away from the support bar 6, a fixing sleeve 43 is movably provided above the fixing plate 42, a cover plate 44 in contact with the top surface of the fixing plate 42 is hinged on the bottom surface of the fixing sleeve 43, and the hinge between the cover plate 44 and the fixing sleeve 43 is located on the side of the fixing sleeve 43 close to the connecting plate 41, and a first fertilizer discharge cylinder 431 for driving the fixing sleeve 43 to approach or move away from the connecting plate 41 is fixed on the connecting plate 41. When the digging mechanism 2 is performing the digging operation, the end of the feed pipe 331 that is not connected to the discharge port 33 is connected to the top surface of the fixed sleeve 43, and the fertilizer in the fertilizer storage mechanism 3 is transported to the fixed sleeve 43 through the feed pipe 331. Since the bottom surface of the fixed sleeve 43 is hinged with a cover plate 44, the fertilizer in the fixed sleeve 43 will not fall temporarily. When the digging mechanism 2 completes the digging operation, the second driving assembly is used to drive the support bar 6 to descend, thereby driving the fixed sleeve 43 to descend and making the fixed plate 42 contact with the bottom surface. At the same time, the walking wheel 15 is used to drive the device to move forward, so that the first fertilizer discharge cylinder 431, the fixed sleeve 43 and the center of the soil pit to be fertilized are located The fixing sleeve 43 is arranged on a straight line, and the edge of the fixing plate 42 is closely attached to the edge of the earth pit. The first fertilizer discharge cylinder 431 is started to drive the fixing sleeve 43 away from the connecting plate 41. As the fixing sleeve 43 moves, the cover plate 44 hinged on the bottom surface of the fixing sleeve 43 gradually opens due to gravity, so that the fertilizer in the fixing sleeve 43 can fall into the earth pit, thereby completing the fertilization action. The diameter of the fixing sleeve 43 is preferably set to be smaller than the diameter of the sleeve 23, so as to prevent the fertilizer from falling out of the earth pit during the discharge process. In addition, the feed pipe 331 is preferably set to a hose, which can be adaptively bent in coordination with the multi-directional movement of the fixing sleeve 43, and the length of the feed pipe 331 also meets the bending allowance requirements.

[0034] like Figure 5 , Figure 6 and Figure 7As shown, a horizontal pressing plate 46 located above the fixed sleeve 43 is slidably connected to the connecting plate 41, and the length of the pressing plate 46 is greater than the length of the fixed plate 42. A second fertilizer discharge cylinder 47 for driving the pressing plate 46 to approach or move away from the fixed sleeve 43 is fixed to the connecting plate 41. A movable sleeve 45 is slidably connected to the fixed sleeve 43, and the outer wall of the movable sleeve 45 contacts the inner wall of the fixed sleeve 43. The top surface of the movable sleeve 45 is slidably connected to the pressing plate 46, and a sliding groove 461 for the movable sleeve 45 to move is provided on the pressing plate 46. The end of the feeding pipe 331 not connected to the discharge port 33 can be connected to the top surface of the movable sleeve 45, and the second fertilizer discharge cylinder 47 controls the movement of the pressing plate 46 in the vertical direction, so as to drive the movable sleeve 45 to move in the vertical direction, thereby changing the height between the fixed sleeve 43 and the movable sleeve 45 to achieve the control of the fertilization capacity, so as to achieve the purpose of adjusting the fertilizer discharge amount.

[0035] like Figure 1 , Figure 2 , Figure 8 , Fig. 9 and Fig.10 As shown, the soil covering mechanism 5 includes a soil covering cylinder 51 arranged on the bottom surface of the support bar 6, and a fixed cylinder 52 with an open bottom and vertical is fixed to the output end of the soil covering cylinder 51, and a plurality of horizontal second electric push rods 53 are fixed to the bottom end of the fixed cylinder 52, and the output ends of the plurality of second electric push rods 53 are all fixed with soil covering plates 55 located inside the fixed cylinder 52 and vertical, so that the soil covering plates 55 can move toward or away from the inner wall of the fixed cylinder 52, and an inner groove 54 for the second electric push rods 53 to move is provided on the inner wall of the fixed cylinder 52, and a vertical third electric push rod 56 is fixed at the center of the inner top surface of the fixed cylinder 52, and a third motor 57 is fixed to the output end of the third electric push rod 56, and a horizontally arranged brush plate 58 is fixed to the output end of the third motor 57. After the fertilizer discharge mechanism 4 completes the fertilization operation, the walking wheel 15 is used to drive the device to continue to move forward, so that the projection of the fixed cylinder 52 in the vertical direction overlaps with the fertilized soil pit. Similarly, the second driving assembly is used to lower the fixed cylinder 52 and make the bottom end of the fixed cylinder 52 contact the ground. At this time, the soil pit is just located at the center of the plurality of covering plates 55. The second electric push rod 53 is started to make the covering plate 55 away from the inner wall of the fixed cylinder 52, so that the broken soil at the edge of the soil pit can be pushed back into the soil pit; after the covering plate 55 pushes the broken soil into the soil pit, the second electric push rod 53 is used to make the covering plate 55 close to the inner wall of the fixed cylinder 52; then, the third electric push rod 56 is started to make the brush plate 58 descend, and the third motor 57 is started to drive the brush plate 58 to rotate, so that the soil pit can be filled.

[0036] like Figure 1 , Figure 2 , Figure 5 and Figure 8As shown, the first driving assembly includes a cylinder 71 fixed to the top surface of the bottom plate 1, and a push plate 7 between each group of movable frames 12 and in a vertical position is fixed at the output end of the cylinder 71, and a guide block 72 is fixed at the bottom end of each group of movable frames 12, and a slide slot 14 for the guide block 72 to move is provided on the bottom plate 1. When the distance between the pits needs to be controlled, the cylinder 71 is started, and the output end of the cylinder 71 pushes the push plate 7 to move left and right, which can drive the movable frame 12 to move left and right, thereby realizing the control of the distance between the digging mechanism 2 and the fertilizer discharging mechanism 4, and the fertilizer discharging mechanism 4 and the soil covering mechanism 5; the setting of the guide block 72 and the slide slot 14 can further limit and guide the movable frame 12; in addition, the first driving assembly connected to the fertilizer discharging mechanism 4 can be arranged between the digging mechanism 2 and the fertilizer discharging mechanism 4, and the first driving assembly connected to the soil covering mechanism 5 can be arranged between the supporting legs 391 of the fertilizer storage mechanism 3, so as to improve the utilization rate of the space.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8 As shown, the second driving assembly includes a hydraulic cylinder 61 fixed to the top of the fixed frame 11 and each group of movable frames 12, and side grooves 64 are provided on the two fixed frames 11 and each group of movable frames 12. The two ends of the support bar 6 are respectively fixed with limit blocks 63 slidably connected to the side grooves 64, and the output end of the hydraulic cylinder 61 is fixedly connected to the top surface of the limit block 63. When the hydraulic cylinder 61 is started to make the limit block 63 move up and down in the side groove 64, the support bar 6 can be driven to move up and down, thereby realizing the control of the vertical position of the digging mechanism 2, the fertilizer discharging mechanism 4 and the covering mechanism 5.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8As shown, three sliders 62 are provided in the support bar 6, one of the sliders 62 is fixed at the center of the support bar 6 and the other two sliders 62 are movably arranged on both sides of the support bar 6, a horizontal fourth motor 65 is provided in the limit block 63, a horizontal bidirectional screw rod 66 is fixed to the output end of the fourth motor 65, the two sliders 62 movably arranged on both sides of the support bar 6 are respectively sleeved with the bidirectional screw rod 66, the thread length on the bidirectional screw rod 66 is equal to the distance from the limit block 63 to the slider 62 fixed at the center of the support bar 6, and a sliding cavity 67 for the slider 62 to move is opened on the support bar 6; the digging mechanism 2, the fertilizer discharge mechanism 4 and the soil covering mechanism 5 can be set to three and correspond to the three sliders 62 respectively, and the discharge port 33 and the discharge pipe 331 can also be set to corresponding three. In the digging mechanism 2, the top surface of the slider 62 can be fixedly connected to the fixed end of the first motor 21, and the output end of the first motor 21 passes through the slider 62 and is fixedly connected to the drill bit 22, and the bottom surface of the slider 62 can be fixedly connected to the sleeve 23; in the fertilizer discharge mechanism 4, the bottom surface of the slider 62 can be fixedly connected to the top of the connecting plate 41 and the fixed end of the second fertilizer discharge cylinder 47; in the covering mechanism 5, the bottom surface of the slider 62 can be fixedly connected to the fixed end of the covering cylinder 51; by setting up a plurality of digging mechanisms 2, fertilizer discharge mechanisms 4 and covering mechanisms 5, the operating efficiency of the digging, fertilizing and covering steps can be greatly accelerated; in addition, by controlling the distance between the sliders 62 through the fourth motor 65, the distance between the pits excavated in the same batch can be controlled, so that the use of the entire device can be more flexible.

[0039] When in use, first connect the end of the feeding tube 331 that is not connected to the discharge port 33 with the top surface of the movable sleeve 45 in advance, start the first electric push rod 38, and the telescopic end of the first electric push rod 38 drives the connecting rod 37 to move, which can drive the slide plate 36 to move, and make the slide plate 36 cover the sieve holes on the sieve plate 35, pour the granular fertilizer into the cylinder 31 from the feed port 32, and store the fertilizer in advance to prevent the situation that the fertilizer is insufficient during the fertilization process, start the second motor 341, and the output end of the second motor 341 drives the stirring paddle 342 to rotate around the stirring shaft 34, if the fertilizer input is a variety of mixed fertilizers, it can be stirred evenly;

[0040] After the preparation work is completed, the hydraulic cylinder 61 on the fixed frame 11 is started to move the support bar 6 downward, thereby driving the drill bit 22 and the sleeve 23 to descend, and the first motor 21 is started at the same time. The output end of the first motor 21 drives the drill bit 22 to rotate, thereby breaking the soil surface, and the excavated soil blocks are crushed by the drill bit 22 and enter between the drill bit 22 and the sleeve 23. Since the upper end surface of the sleeve 23 is provided with an opening 24, as the drill bit 22 continues to move downward, the crushed soil between the drill bit 22 and the sleeve 23 will be squeezed and discharged from the opening 24, and through the downwardly inclined fixing ring 25, the crushed soil is accumulated at the outer edge of the pit, effectively preventing the discharged crushed soil from falling back into the pit;

[0041] When the digging mechanism 2 is digging, the second fertilizer discharge cylinder 47 can be used to control the movement of the pressing plate 46 in the vertical direction, which can drive the movable sleeve 45 to move in the vertical direction, so as to change the height between the fixed sleeve 43 and the movable sleeve 45 to achieve the control of the fertilization capacity, and then, the first electric push rod 38 is used to make the slide plate 36 open the sieve holes on the sieve plate 35, and as the stirring paddle 342 rotates, the fertilizer will fall evenly from the sieve plate 35, and be transported to the movable sleeve 45 by the discharge pipe 331 connected to the discharge port 33, so as to achieve the purpose of uniform material discharge; when a certain amount of fertilizer is filled in the movable sleeve 45 and the fixed sleeve 43, the first electric push rod 38 is started again, so that the slide plate 36 covers the sieve holes on the sieve plate 35, so that the fertilizer can be controlled to stop being transported;

[0042] When the digging mechanism 2 completes the digging operation, the support bar 6 is driven down by the hydraulic cylinder 61, thereby driving the fixed sleeve 43 to descend and making the fixed plate 42 contact with the bottom surface, and controlling the distance between the digging mechanism 2 and the fertilizer discharging mechanism 4 by the cylinder 71, so as to achieve the purpose of controlling the distance between the pits; at the same time, the walking wheel 15 is used to drive the device to move forward, so that the first fertilizer discharging cylinder 431, the fixed sleeve 43 and the center of the pit to be fertilized are located in a straight line, and the edge of the fixed plate 42 is closely attached to the edge of the pit, and the first fertilizer discharging cylinder 431 is started to drive the fixed sleeve 43 away from the connecting plate 41. As the fixed sleeve 43 moves, the cover plate 44 hinged on the bottom surface of the fixed sleeve 43 gradually opens due to the action of gravity, so that the fertilizer in the fixed sleeve 43 can fall into the pit, thereby completing the fertilization action;

[0043] After the fertilizer discharge mechanism 4 completes the fertilization operation, the walking wheel 15 is used to drive the device to continue to move forward, so that the projection of the fixed cylinder 52 in the vertical direction overlaps with the fertilized soil pit. Similarly, the second driving assembly is used to lower the fixed cylinder 52 and make the bottom end of the fixed cylinder 52 contact the ground. At this time, the soil pit is just located at the center of the plurality of covering plates 55. The second electric push rod 53 is started to make the covering plates 55 away from the inner wall of the fixed cylinder 52, so that the broken soil at the edge of the soil pit can be pushed back into the soil pit; after the covering plates 55 push all the broken soil into the soil pit, the second electric push rod 53 is used to make the covering plates 55 close to the inner wall of the fixed cylinder 52; then, the third electric push rod 56 is started to lower the brush plate 58, and the third motor 57 is started to drive the brush plate 58 to rotate, so that the soil pit can be filled, thereby effectively avoiding the loss of fertilizer efficiency caused by exposure of fertilizer to the air.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A granular fertilizer application device, comprising a horizontally arranged bottom plate (1), characterized in that: Two symmetrical and vertical fixed frames (11) are fixed at the edge of the top surface of the bottom plate (1); two groups of movable frames (12) parallel to the fixed frames (11) are movably provided on the top surface of the bottom plate (1); each group of movable frames (12) is provided with two; a first driving component for driving each group of movable frames (12) to move in a horizontal direction is provided on the bottom plate (1); and the movement trajectories of each group of movable frames (12) do not interfere with each other; horizontal support bars (6) are movably provided between the two fixed frames (11) and each group of movable frames (12); a second driving component for driving the support bar (6) to move in a vertical direction is provided on the fixed frames (11) and each group of movable frames (12); and a support bar (6) located between the two fixed frames (11) is provided with a second driving component for driving the support bar (6) to move in a vertical direction. A digging mechanism (2) is provided on the support bar (6), a fertilizer discharge mechanism (4) and a soil covering mechanism (5) are respectively provided on the support bar (6) between each group of movable frames (12), and the soil covering mechanism (5) is arranged away from the digging mechanism (2); a fertilizer storage mechanism (3) is fixed on the top surface of the bottom plate (1), the fertilizer storage mechanism (3) is located between the fertilizer discharge mechanism (4) and the soil covering mechanism (5), and the fertilizer storage mechanism (3) is connected to the fertilizer discharge mechanism (4); a cavity (13) is provided on the bottom plate (1) for the digging mechanism (2), the fertilizer discharge mechanism (4) and the soil covering mechanism (5) to move, so that the digging mechanism (2), the fertilizer discharge mechanism (4) and the soil covering mechanism (5) can all contact the ground; and a plurality of walking wheels (15) are provided on both sides of the bottom plate (1).

2. The granular fertilizer application device according to claim 1, characterized in that: The digging mechanism (2) comprises a first motor (21) arranged on the top surface of the support bar (6); a drill bit (22) located below the support bar (6) and in a vertical position is fixed to the output end of the first motor (21); a sleeve (23) capable of surrounding the drill bit (22) is provided on the bottom surface of the support bar (6); an opening (24) is provided on the upper end surface of the sleeve (23); the bottom end of the sleeve (23) is open; and a fixing ring (25) arranged to be tilted downward is fixed to the surface of the sleeve (23).

3. The granular fertilizer fertilizing device according to claim 1, characterized in that: The fertilizer storage mechanism (3) comprises a cylindrical body (31) vertically arranged above the bottom plate (1), wherein the top and bottom ends of the body (31) are respectively connected to a feed port (32) and a discharge port (33), wherein the discharge port (33) is connected to a feed pipe (331) whose end is connected to the fertilizer discharge mechanism (4), wherein a vertical stirring shaft (34) is arranged in the body (31), wherein a second motor (341) for driving the stirring shaft (34) to rotate around its own axis is arranged on the body (31), and wherein a second motor (341) for driving the stirring shaft (34) to rotate around its own axis is fixed on the stirring shaft (34). A stirring paddle (342) is fixed in the cylinder (31), a horizontally arranged sieve plate (35) is fixed in the cylinder (31), the sieve plate (35) is located below the stirring paddle (342), a horizontally arranged slide plate (36) is slidably connected to the cylinder (31), the bottom surface of the slide plate (36) is in contact with the top surface of the sieve plate (35), one end of the slide plate (36) passes through the cylinder (31) and extends outside the cylinder (31), and a third driving component for driving the slide plate (36) to cover or open the sieve holes on the sieve plate (35) is provided on the cylinder (31).

4. The granular fertilizer application device according to claim 3, characterized in that: The third driving assembly comprises a first electric push rod (38) horizontally fixed on the cylinder (31); a connecting rod (37) is fixed to the output end of the first electric push rod (38); the other end of the connecting rod (37) is fixedly connected to an end of the slide plate (36) located outside the cylinder (31); a supporting ring (39) is fixed to the outer surface of the cylinder (31); a vertical supporting leg (391) is fixed to the supporting ring (39); the bottom end of the supporting leg (391) is fixedly connected to the top surface of the bottom plate (1).

5. The granular fertilizer fertilizing device according to claim 1, characterized in that: The fertilizer discharging mechanism (4) comprises a connecting plate (41) vertically arranged on the bottom surface of the supporting bar (6); a horizontally arranged fixing plate (42) is fixed to one end of the connecting plate (41) away from the supporting bar (6); a fixing sleeve (43) is movably arranged above the fixing plate (42); a cover plate (44) in contact with the top surface of the fixing plate (42) is hingedly connected to the bottom surface of the fixing sleeve (43); and a hinged portion between the cover plate (44) and the fixing sleeve (43) is located on a side of the fixing sleeve (43) close to the connecting plate (41); and a first fertilizer discharging cylinder (431) for driving the fixing sleeve (43) to move close to or away from the connecting plate (41) is fixed to the connecting plate (41).

6. The granular fertilizer fertilizing device according to claim 5, characterized in that: The connecting plate (41) is slidably connected to a horizontal pressing plate (46) located above the fixed sleeve (43); the length of the pressing plate (46) is greater than the length of the fixed plate (42); a second fertilizer row cylinder (47) for driving the pressing plate (46) to move closer to or away from the fixed sleeve (43) is fixed to the connecting plate (41); a movable sleeve (45) is slidably connected to the fixed sleeve (43); the outer wall of the movable sleeve (45) contacts the inner wall of the fixed sleeve (43); the top surface of the movable sleeve (45) is slidably connected to the pressing plate (46); and a sliding groove (461) for the movable sleeve (45) to move is provided on the pressing plate (46).

7. The granular fertilizer application device according to claim 1, characterized in that: The soil covering mechanism (5) comprises a soil covering cylinder (51) arranged on the bottom surface of the support bar (6); a fixed cylinder (52) with an open bottom surface and in a vertical position is fixed to the output end of the soil covering cylinder (51); a plurality of horizontal second electric push rods (53) are fixed to the bottom end of the fixed cylinder (52); a soil covering plate (55) located inside the fixed cylinder (52) and in a vertical position is fixed to the output ends of the plurality of second electric push rods (53), and the soil covering plate (55) can move towards or away from the inner wall of the fixed cylinder (52); an inner groove (54) for the second electric push rods (53) to move is provided on the inner wall of the fixed cylinder (52); a vertical third electric push rod (56) is fixed at the center of the inner top surface of the fixed cylinder (52); a third motor (57) is fixed to the output end of the third electric push rod (56); and a horizontally arranged brush plate (58) is fixed to the output end of the third motor (57).

8. The granular fertilizer application device according to claim 1, characterized in that: The first driving assembly comprises a cylinder (71) fixed to the top surface of the base plate (1), a vertical push plate (7) between each group of movable frames (12) being fixed at the output end of the cylinder (71), a guide block (72) being fixed at the bottom end of each group of movable frames (12), and a slide groove (14) for the guide block (72) to move is provided on the base plate (1).

9. The granular fertilizer fertilizing device according to claim 1, characterized in that: The second driving assembly comprises a hydraulic cylinder (61) respectively fixed to the top of the fixed frame (11) and each group of movable frames (12); side grooves (64) are provided on the two fixed frames (11) and each group of movable frames (12); limit blocks (63) slidably connected to the side grooves (64) are respectively fixed at both ends of the support bar (6); and the output end of the hydraulic cylinder (61) is fixedly connected to the top surface of the limit block (63).

10. The granular fertilizer application device according to claim 3 or 9, characterized in that: The support bar (6) is provided with three sliders (62), one of which is fixed at the center of the support bar (6) and the other two sliders (62) are movably arranged at both sides of the support bar (6), a horizontal fourth motor (65) is provided in the limit block (63), a horizontal bidirectional screw rod (66) is fixed at the output end of the fourth motor (65), the two sliders (62) movably arranged at both sides of the support bar (6) are respectively sleeved with the bidirectional screw rod (66), the thread length on the bidirectional screw rod (66) is equal to the distance from the limit block (63) to the slider (62) fixed at the center of the support bar (6), and a sliding cavity (67) for the slider (62) to move is opened on the support bar (6); the digging mechanism (2), the fertilizer discharge mechanism (4) and the soil covering mechanism (5) can be set to three and correspond to the three sliders (62) respectively, and the discharge port (33) and the discharge pipe (331) can also be set to corresponding three.

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