Soil remediation agent broadcaster and control method

Abstract

The invention relates to the technical field of agricultural mechanical equipment, and provides a soil remediation agent broadcaster and a control method. The soil remediation agent broadcaster comprises a material box and a broadcasting dust removal mechanism, wherein the broadcasting dust removal mechanism is connected with the material box; the sowing dust removal mechanism comprises a first shell and a plurality of feeding assemblies, the lower portion of the first shell is open, the feeding assemblies are sequentially arranged in the length extension direction of the first shell, and the two ends of each feeding assembly communicate with the material box and the first shell correspondingly; each feeding assembly comprises a feeding pipe, a motor and a shaftless spiral pipe, the two ends of the feeding pipe communicate with the material box and the first shell correspondingly, the shaftless spiral pipe is arranged in the feeding pipe in a sleeved mode, and the shaftless spiral pipe is connected with the motor. According to the soil remediation agent broadcaster, the problem of dust drifting caused by manual feeding can be avoided; according to the device, dust is scattered in the first shell, so that dust drifting can be avoided, the problem of dust raising in the scattering process is effectively solved, and the safety of operators is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery and equipment, and in particular to a soil remediation agent spreader and a control method thereof. Background Art

[0002] The long-term use of pesticides and fertilizers, the discharge of industrial waste and other factors will lead to soil acidification, which will cause agricultural production reduction and activate heavy metal ions, aggravating the harm of heavy metals to the human body and pollution to the environment. The mechanized treatment technology of acidic soil is a hot topic in the current agricultural engineering research field.

[0003] According to the analysis of the data from the Second National Soil Survey, the area of ​​acidic soil with a pH value less than 6.5 in my country is as high as 3.111 million km2. 2 , accounting for about 32.4% of the land area. Soil remediation agents such as lime powder are widely used in soil improvement because of their low price, simple operation and quick effect. The traditional manual lime spreading method will cause a large amount of lime powder to drift. The drifting dust can easily enter the mouth, nose and eyes of the spreader, corrode the skin of the spreader, and cause certain damage to the body of the spreader. At the same time, the amount of lime powder spread is difficult to control, the labor intensity is high, and the uniformity is poor; mechanical spreading generally uses disc spreading and spiral opening natural falling methods. Compared with manual spreading, mechanical spreading is more efficient and more uniform, but the dust problem it causes is very serious. Summary of the invention

[0004] The invention provides a soil repair agent spreader and a control method, which are used to solve the defect of dust generation in the lime powder spreading process in the prior art.

[0005] The present invention provides a soil remediation agent spreader, comprising: a material box and a spreading and dust removal mechanism, wherein the spreading and dust removal mechanism is connected to the material box; the spreading and dust removal mechanism comprises: a first shell and multiple groups of feeding components, wherein the lower part of the first shell is open, and the multiple groups of feeding components are arranged in sequence along the extension direction of the length of the first shell, and the two ends of each group of feeding components are respectively connected to the material box and the first shell; each group of feeding components comprises: a feeding pipe, a motor and a shaftless spiral pipe, wherein the two ends of the feeding pipe are respectively connected to the material box and the first shell, and the shaftless spiral pipe is sleeved in the feeding pipe, and the shaftless spiral pipe is connected to the motor.

[0006] A soil remediation agent spreader provided by the present invention also includes a stirring mechanism, which is arranged in the material box; the stirring mechanism includes: a first rotating shaft and a plurality of stirring rods, both ends of the first rotating shaft are connected to the material box, the plurality of stirring rods are arranged in sequence along the axial direction of the first rotating shaft, two adjacent stirring rods are arranged at an angle, and each of the two ends of the stirring rod is respectively connected to a protrusion.

[0007] A soil remediation agent spreader provided by the present invention also includes a discrete mechanism, which is arranged in the first shell; the discrete mechanism includes: a second rotating shaft and a plurality of conical discrete devices, both ends of the second rotating shaft are connected to the first shell, and the plurality of conical discrete devices are arranged in sequence along the axial direction of the second rotating shaft.

[0008] According to a soil remediation agent spreader provided by the present invention, each of the conical discrete devices includes: a tube body, a plurality of connecting rods and a plurality of conical discrete teeth, the tube body is sleeved on the outside of the second rotating shaft, and each of the conical discrete teeth is connected to the tube body through one of the connecting rods; the plurality of conical discrete teeth are arranged around the tube body.

[0009] A soil remediation agent spreader provided according to the present invention also includes a dust removal mechanism, which includes: multiple air intake structures, a first air intake pipe, a second air intake pipe, a fan and a cyclone separator; the multiple air intake structures are connected to the first air intake pipe, and the air intake structure is arranged in the first shell; the two ends of the second air intake pipe are respectively connected to the fan and the first air intake pipe; the cyclone separator is connected to the material box, and the cyclone separator is arranged in the second air intake pipe.

[0010] According to a soil remediation agent spreader provided by the present invention, each of the air suction structures includes a second shell, the second shell is connected to the first air suction pipe, the second shell is provided with an opening, a plurality of filter teeth are provided in the second shell, and the filter teeth are arranged adjacent to the opening.

[0011] A soil remediation agent spreader provided by the present invention also includes an adjusting mechanism, through which the first shell is connected to the material box, and the adjusting mechanism is used to adjust the height of the first shell; the adjusting mechanism includes: a connecting shaft, a plurality of parallelogram structures and a push rod; the plurality of parallelogram structures are arranged in sequence along the extension direction of the length of the material box, and the two ends of each parallelogram structure are respectively connected to the material box and the first shell; the connecting shaft is penetrated by the plurality of parallelogram structures, and the two ends of the push rod are respectively connected to the frame and the connecting shaft, and when the push rod is extended and retracted, it can drive the plurality of parallelogram structures to rise and fall.

[0012] A soil remediation agent spreader provided according to the present invention also includes: a first distance measuring device, a second distance measuring device and a controller; the first distance measuring device is arranged on the first shell, and the first distance measuring device is used to detect a first distance between the first shell and the ground; the second distance measuring device is connected to the push rod, and the second distance measuring device is used to detect a second distance between the first shell and the ground; the controller is used to calculate a target adjustment height of the first shell based on the first distance and the second distance, and control the extension and retraction amount of the push rod based on the target adjustment height.

[0013] According to a soil remediation agent spreader provided by the present invention, the second ranging device includes: a contour wheel, a first bracket, a second bracket, an encoder, a universal joint and a fixed rod; the first end of the first bracket is connected to the rotating shaft of the contour wheel, and the second end of the first bracket is rotatably connected to the second bracket through an encoder; the second bracket is connected to the fixed rod through a universal joint, and the fixed rod is connected to the push rod.

[0014] The present invention also provides a control method based on the soil remediation agent spreader as described above, including: obtaining a first distance between a first shell and the ground, and a second distance between the first shell and the ground, calculating a target adjustment height of the first shell based on the first distance and the second distance, and controlling the extension and retraction amount of the push rod based on the target adjustment height; obtaining the discharge rate and flow rate of the soil remediation agent in real time, and controlling the rotation speed of the discrete mechanism and the dust removal mechanism based on the discharge rate, the flow rate and a closed-loop feedback control strategy.

[0015] The soil remediation agent spreader provided by the present invention can avoid the problem of dust drift caused by manual feeding by adopting a feeding assembly for feeding; and can avoid dust drift by spreading in the first shell, effectively solving the dust problem caused by the spreading process and ensuring the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the soil repair agent spreader provided by the present invention.

[0018] Figure 2 It is a structural schematic diagram of a shaftless spiral tube.

[0019] Figure 3 yes Figure 1 Schematic diagram of the structure of the stirring mechanism shown in FIG.

[0020] Figure 4 yes Figure 1 Schematic diagram of the structure of the discrete mechanism shown in FIG.

[0021] Figure 5 yes Figure 4 Schematic diagram of the structure of the cone discrete device shown in FIG.

[0022] Figure 6 yes Figure 1 The structural schematic diagram of the dust removal mechanism is shown in FIG.

[0023] Figure 7 yes Figure 6 A schematic structural diagram of the dust removal structure is shown in FIG.

[0024] Figure 8 It is a side view of the soil repair agent spreader provided by the present invention.

[0025] Fig. 9 yes Figure 8 A schematic structural diagram of a second distance measuring device is shown in FIG.

[0026] Fig.10 It is a structural diagram of the roller.

[0027] Fig.11 It is the logic control diagram of the closed-loop feedback control strategy.

[0028] Reference numerals: 1. Material box; 2. Spreading and dust removal mechanism; 3. Stirring mechanism; 4. Dispersion mechanism; 5. Dust removal mechanism; 6. Adjustment mechanism; 7. Feeding mechanism; 8. Frame; 9. Second distance measuring device; 21. first housing; 22. feed pipe; 23. motor; 24. shaftless spiral tube; 31. first rotating shaft; 32. stirring rod; 33. bump; 41. second rotating shaft; 42. cone-shaped body discrete device; 43. third housing; 51. air suction structure; 52. first air suction pipe; 53. second air suction pipe; 54. fan; 55. cyclone separator; 56. third air suction pipe; 61. parallelogram structure; 62. push rod; 81. connecting plate; 82. third bracket; 83. universal wheel; 84. locking plate; 91. contour wheel; 92. first bracket; 93. encoder; 94. second bracket; 95. universal joint; 96. fixing rod; 421, tube body; 422, connecting rod; 423, cone-shaped discrete teeth; 511, second shell; 512, filter teeth. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Combine the following Figure 1-Figure 11 The present invention describes a soil remediation agent spreader and a control method thereof.

[0031] like Figure 1 As shown, in an embodiment of the present invention, the soil remediation agent spreader includes: a material box 1 and a spreading and dust removal mechanism 2, and the spreading and dust removal mechanism 2 is connected to the material box 1. The spreading and dust removal mechanism includes: a first shell 21 and multiple groups of feeding components, the lower part of the first shell 21 is open, and the multiple groups of feeding components are arranged in sequence along the extension direction of the length of the first shell 21, and the two ends of each group of feeding components are respectively connected to the material box 1 and the first shell 21, so as to transport the material in the material box 1 to the first shell 21 through the feeding assembly. Optionally, in this embodiment, the material in the material box 1 is lime powder.

[0032] like Figure 1 and Figure 2 As shown, each feeding assembly includes: a feeding pipe 22, a motor 23 and a shaftless spiral tube 24. The two ends of the feeding pipe 22 are respectively connected to the material box 1 and the first shell 21, and the shaftless spiral tube 24 is sleeved in the feeding pipe 22 and connected to the motor.

[0033] Specifically, the motor 23 is arranged outside the first housing 21. The lime powder falls under the action of gravity in the material box 1 and falls into each feed pipe 22. The motor 23 drives the shaftless spiral tube 24 to rotate to transport the lime powder into the first housing 21 and then spread it into the soil. In actual use, when the shaftless spiral tube 24 transports the lime powder, it is sleeved in the feed pipe 22, thereby avoiding the problem of dust drift generated when the lime powder is transported. When the lime powder is spread, the lime powder is spread in the first housing 21, which effectively avoids the dust problem during the spreading process.

[0034] In this embodiment, the shaftless spiral tube 24 is a spiral tube without a central axis, which can realize large-angle material transportation and get rid of the limitations of shaft spiral tube transportation.

[0035] Furthermore, in this embodiment, each shaftless spiral tube 24 is connected to a motor 23, and the speed of the motor 23 is controlled to adjust the discharge amount of each shaftless spiral tube 24. In actual use, the speed of each motor 23 can be adjusted according to the properties of the soil in the sowing area to adjust the discharge amount of each shaftless spiral tube 24, so that the discharge is more accurate and on-demand sowing is achieved.

[0036] The soil remediation agent spreader provided in the embodiment of the present invention can avoid the problem of dust drift caused by manual feeding by adopting a feeding assembly for feeding; and can avoid dust drift by spreading in the first shell, effectively solving the dust problem caused by the spreading process and ensuring the safety of the operator.

[0037] like Figure 3 As shown, in an embodiment of the present invention, the soil remediation agent spreader further includes a stirring mechanism 3, which is disposed in the material box 1. The stirring mechanism 3 is used to stir the material to prevent the lime powder from agglomerating.

[0038] Further, the stirring mechanism 3 includes: a first rotating shaft 31 and a plurality of stirring rods 32. Both ends of the first rotating shaft 31 are connected to the material box 1. In the present embodiment, the length direction of the first rotating shaft 31 is the same as the length direction of the material box 1. The plurality of stirring rods 32 are arranged in sequence along the axial direction of the first rotating shaft 31. In the present embodiment, the first rotating shaft 31 is arranged in the middle of each stirring rod 32, and two adjacent stirring rods 32 are arranged at an angle so that the stirring mechanism 3 has a multi-dimensional breaking effect. Optionally, in the present embodiment, the angle between two adjacent stirring rods 32 can be 90°, or other.

[0039] like Figure 3 As shown, since lime powder and other soil remediation agents are prone to caking during storage, in the embodiment of the present invention, each stirring rod 32 is connected to two ends with a protrusion 33, and during the rotation of the first rotating shaft 31, the protrusion 33 can increase the contact area with the lime powder, thereby breaking up the lime powder to avoid the lime powder from being suspended inside the material box 1.

[0040] like Figure 4 As shown, in an embodiment of the present invention, the soil remediation agent spreader further includes a discrete mechanism 4, which is disposed in the first housing 21. The discrete mechanism 4 is used to break up the falling lime powder. In this embodiment, the discrete mechanism 4 includes: a second rotating shaft 41 and a plurality of conical discrete devices 42, and both ends of the second rotating shaft 41 are connected to the first housing 21. In this embodiment, the length direction of the second rotating shaft 41 is the same as the length direction of the first housing 21. The plurality of conical discrete devices 42 are arranged in sequence along the axial direction of the second rotating shaft.

[0041] Specifically, in this embodiment, the number of the cone-shaped dispersing devices 42 matches the number of the feed pipes 22, and each cone-shaped dispersing device 42 is disposed below the feed pipe 22. The lime powder is transported to the first housing 21 through the shaftless spiral tube 24, and the lime powder is broken up by the cone-shaped dispersing devices 42 during its falling process to improve the uniformity of spreading.

[0042] Furthermore, the dispersing mechanism 4 further includes a plurality of third shells 43, each of which is provided in a third shell 43, and each of which is connected to a feed pipe 22, so that the lime powder transported by the shaftless spiral tube 24 enters the third shell 43 and is dispersed by the cone dispersing device 42 during the falling process. In this embodiment, by providing the third shell 43, the lime powder transported by the shaftless spiral tube 24 can be confined in the third shell 43 to prevent the lime powder from drifting, so that the lime powder can fall on the cone dispersing device 42 during the falling process, and then be dispersed by the cone dispersing device 42 to ensure uniformity during spreading.

[0043] Furthermore, in this embodiment, by adjusting the rotation speed of the second rotating shaft 41, the spreading uniformity of the cone-shaped body discrete device 42 can be adjusted to improve the spreading uniformity.

[0044] like Figure 5 As shown, in the embodiment of the present invention, the cone-shaped discrete device 42 comprises: a tube body 421, a plurality of connecting rods 422 and a plurality of cone-shaped discrete teeth 423. The tube body 421 is sleeved on the outside of the second rotating shaft 41, and each cone-shaped discrete tooth 423 is connected to a connecting rod 422. The tube body 421 is provided with a plurality of connecting holes along its circumferential direction, and each connecting rod 422 is inserted into a connecting hole, so that the plurality of cone-shaped discrete teeth 423 are arranged around the tube body 421, thereby increasing the contact area with the lime powder and ensuring the uniformity of the lime powder when it is dispersed.

[0045] In the embodiment of the present invention, the conical discrete teeth 423 are in a conical structure, which can finely disperse the discharged fertilizer to ensure that the lime powder is evenly distributed in the field.

[0046] Furthermore, the second rotating shaft 41 is connected to a discrete motor, which is used to drive the second rotating shaft 41 to rotate. The rotation speed of the discrete motor is positively correlated with the degree of discreteness of the lime powder. The faster the rotation speed of the discrete motor, the better the degree of discreteness of the lime powder, and vice versa.

[0047] The lime powder enters the third shell 43, is broken up by the conical dispersing device 42, and is spread on the ground. Due to the process of the lime powder being broken up by the high-speed rotating conical dispersing device 42 and the lime powder falling and colliding with the ground, a certain amount of dust drift will be generated. Therefore, the soil remediation agent spreader provided in this embodiment of the present invention also includes a dust removal mechanism 5.

[0048] like Figure 6 As shown, the dust removal mechanism 5 includes: a plurality of air suction structures 51, a first air suction pipe 52, a second air suction pipe 53, a fan 54 and a cyclone separator 55. Each air suction structure 51 is connected to the first air suction pipe 52 through a third air suction pipe 56. The plurality of air suction structures 51 and the plurality of third air suction pipes 56 are all arranged in the first shell 21, and each air suction structure 51 is arranged adjacent to the third shell 43 to suck the drifting dust. The fan 54 is connected to the material box 1 and is located outside the material box 1. The cyclone separators 55 are all connected to the material box 1. The two ends of the second air suction pipe 53 are respectively connected to the fan 54 and the first air suction pipe 52.

[0049] The fan 54 draws the airflow by high-speed rotation, forming a negative pressure at the end of each air intake structure 51, and sucks the dust and air from the air intake structure 51 into the cyclone separator 55. The cyclone separator 55 filters out the dust particles in the airflow, and the filtered dust particles enter the material box 1, thereby realizing the recycling of the dust particles.

[0050] Furthermore, in order to improve the dust removal efficiency, in the embodiment of the present invention, the number of the second air intake pipe 53 and the cyclone separator 55 are both two, and the two cyclone separators 55 are respectively arranged on both sides of the fan 54. After passing through the first air intake pipe 52, the dust enters the two second air intake pipes 53 respectively, and is separated and filtered by the two cyclone separators 55.

[0051] like Figure 7 As shown, in the embodiment of the present invention, each air suction structure 51 includes a second shell 511, the second shell 511 is located in the first shell 21, and the second shell 511 is connected to the first air suction pipe 52 through the third air suction pipe 56. The second shell 511 is provided with an opening, and a plurality of filter teeth 512 are provided in the second shell 511. The filter teeth 512 are arranged adjacent to the opening, and the filter teeth 512 are used to filter out large impurities when sucking dust, so as to prevent large impurities from clogging each air suction pipe.

[0052] The soil remediation agent spreader provided in the embodiment of the present invention can, by providing a dust removal mechanism, suck out the dust in the first shell during the spreading process and separate the dust particles, and the separated dust particles enter the material box again, thereby realizing the recycling of materials.

[0053] like Figure 1 As shown, in an embodiment of the present invention, the soil remediation agent spreader further includes a frame 8, the material box 1 is arranged on the frame 8, and the frame 8 is provided with a plurality of universal wheels 83 to enable the frame 8 to move.

[0054] Specifically, in this embodiment, the frame 8 is composed of a plurality of pipes. The material box 1 is arranged on the frame 8. Four walking mechanisms are arranged at the bottom of the frame 8 so that the frame 8 can move. Fig.10 As shown, each walking mechanism includes: a connecting plate 81, a third bracket 82, a universal wheel 83 and a locking plate 84. In this embodiment, the third bracket 82 is a U-shaped structure, the rotating shaft of the universal wheel 83 is connected to the two opposite side plates of the U-shaped structure, one end of the locking plate 84 is rotatably connected to the top plate of the U-shaped structure, and the other end of the locking plate 84 is a free end. The locking plate 84 is connected to the frame 8 through the multi-layer connecting plate 81. When the locking plate 84 is in contact with the universal wheel 83, the universal wheel 83 cannot rotate, and the frame 8 is fixed in the current position; when the locking plate 84 is separated from the universal wheel 83, the universal wheel 83 rotates, and the frame 8 can move.

[0055] like Figure 8 As shown, the soil repair agent spreader further includes an adjusting mechanism 6. The first housing 21 is connected to the material box 1 via the adjusting mechanism 6, and the adjusting mechanism 6 is used to adjust the height of the first housing 21.

[0056] Specifically, the adjustment mechanism 6 includes: a plurality of parallelogram structures 61, a push rod 62 and a connecting shaft. The plurality of parallelogram structures 61 are sequentially arranged along the extension direction of the length of the material box 1, and the two ends of each parallelogram structure 61 are respectively connected to the material box 1 and the first housing 21. The connecting shaft is provided through the plurality of parallelogram structures 61, and the two ends of the push rod 62 are respectively connected to the frame 8 and the connecting shaft.

[0057] In this embodiment, the parallelogram structure 61 is a parallelogram structure formed by hinged four rods in sequence, one side of the parallelogram structure 61 is connected to the material box 1, and the side opposite to the side is connected to the first shell 21. When the push rod 62 is extended and retracted, it can drive the parallelogram structure 61 to rise and fall, and then drive the first shell 21 to rise and fall, so as to adjust the height of the first shell 21.

[0058] like Figure 8 As shown, the soil repair agent spreader also includes: a first distance measuring device, a second distance measuring device 9 and a controller. The first distance measuring device is arranged on the first housing 21, and is used to detect a first distance between the first housing 21 and the ground. The second distance measuring device 9 is connected to the push rod 62, and the second distance measuring device 9 is used to detect a second distance between the first housing 21 and the ground. The controller is used to calculate the target adjustment height of the first housing 21 based on the first distance and the second distance, and control the extension amount of the push rod 62 based on the target adjustment height.

[0059] Specifically, the first distance measuring device may be an intelligent sonar distance measuring device. Fig. 9As shown, the second distance measuring device 9 includes: a profiling wheel 91, a first bracket 92, an encoder 93, a second bracket 94, a universal joint 95 and a fixed rod 96. The first end of the first bracket 92 is connected to the rotating shaft of the profiling wheel 91, and the profiling wheel 91 can contact the ground and rotate. The second end of the first bracket 92 is rotatably connected to the second bracket 94 through the encoder 93, and the second bracket 94 is connected to the fixed rod 96 through the universal joint 95, and the fixed rod 96 is connected to the push rod 62.

[0060] In this embodiment, the bottom surface of the second bracket 94 and the surface of the open end of the first shell 21 are located in the same plane. The contour wheel 91 is used to monitor the flatness of the ground. When the ground is uneven, the encoder 93 rotates a certain angle accordingly. By calculating the angle between the first bracket 92 and the fixing rod 96, the distance between the second bracket 94 and the ground can be calculated, and the distance between the first shell 21 and the ground can be obtained. In this embodiment, since the fixing rod 96 is connected to the push rod 62, when the fixing rod 96 moves up and down, the first shell 21 moves with it, so that the bottom surface of the second bracket 94 and the surface of the open end of the first shell 21 can always be located in the same plane.

[0061] Taking into account the differences in different terrains, the first ranging device can sense the first distance between the first shell 21 and the ground in real time, and the second ranging device can sense the second distance between the first shell 21 and the ground in real time. The first distance and the second distance are combined to obtain the target adjustment height of the first shell 21, ensuring that the first shell 21 is always at the optimal discharge height, ensuring that the lime powder can accurately fall into the designated area, so as to improve the spreading accuracy.

[0062] Specifically, , where H is the second distance, h is the radius of the profiling wheel, l is the distance from the axis of the profiling wheel to the axis of the encoder, and θ is the angle between the first bracket and the fixing rod.

[0063] , in, is the fusion height, is the height measurement value of the encoder, is the first distance, , is the weight value of the sensor.

[0064] Each sensor is based on the fused ground height , calculate and adjust the height of the target The error: , Encoder 93 adopts PID control, and the PID controller outputs the control signal The driving motor drives the push rod 62 to extend and retract according to the height error. Make real-time adjustments to obtain the extension and retraction of the push rod. The control formula is: .

[0065] like Figure 1 As shown, in an embodiment of the present invention, the soil remediation agent spreader further includes a feeding mechanism 7 , which is connected to the material box 1 , and is used to transport materials into the material box 1 .

[0066] like Fig.11 As shown, the embodiment of the present invention also provides a control method based on a soil remediation agent spreader, which realizes the coordinated control of "discharging-dispersion-dust removal" and automatic height adjustment, and specifically includes the following steps: Step 01: Obtain a first distance between the first shell 21 and the ground, and a second distance between the first shell 21 and the ground, calculate a target adjustment height of the first shell 21 based on the first distance and the second distance, and control the extension and retraction amount of the push rod 62 based on the target adjustment height; Step 02: Obtain the discharge rate and flow rate of the soil remediation agent in real time, and control the rotation speed of the discrete mechanism and the dust removal mechanism based on the discharge rate, flow rate and closed-loop feedback control strategy.

[0067] Specifically, taking into account the differences in different terrains, the first ranging device can sense the first distance between the first shell 21 and the ground in real time, and the second ranging device can sense the second distance between the first shell 21 and the ground in real time. The first distance and the second distance are integrated and regulated to obtain the target adjustment height of the first shell 21, ensuring that the first shell 21 is always at the optimal discharge height, ensuring that the lime powder can accurately fall into the designated area, so as to improve the spreading accuracy.

[0068] When spreading, the discharge rate and flow rate of lime powder are obtained in real time, and the rotation speed of the discrete mechanism 4 and the dust removal mechanism 5 is automatically adjusted in combination with a closed-loop feedback control strategy to achieve on-demand fertilization according to soil conditions, reduce waste and improve efficiency.

[0069] Specifically, the motor 23 adjusts the speed according to the discharge rate and flow rate required for the specified area operation, the discrete motor of the discrete mechanism 4 calculates the required discrete speed according to the speed of the motor 23, and the fan 54 adjusts according to the discrete speed of the discrete motor to control the dust removal strength. Specifically, the faster the speed of the motor 23, the greater the discharge rate and flow rate, the faster the speed of the discrete motor; the faster the discrete motor, the greater the dust generated, and accordingly, the faster the speed of the fan 54.

[0070] The control method provided by the embodiment of the present invention can adaptively adjust the height of the first shell according to different soil forms to avoid dust leakage; the coordinated control of discharging, dispersion and dust removal can realize on-demand and precise spreading, which not only significantly improves the intelligence level of the spreader, but also provides strong technical support for realizing precision agriculture, reducing excessive use of lime powder, improving agricultural production efficiency and environmental protection, marking an important step forward for modern agricultural equipment towards greater intelligence, refinement and environmental protection. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soil remediation agent spreader, characterized in that: include: A material box and a spreading and dust removal mechanism, wherein the spreading and dust removal mechanism is connected to the material box; The spreading and dust removal mechanism comprises: a first shell and a plurality of feed assemblies, the lower portion of the first shell is open, the plurality of feed assemblies are arranged in sequence along the extension direction of the length of the first shell, and the two ends of each feed assembly are respectively connected to the material box and the first shell; Each group of the feed components includes: a feed pipe, a motor and a shaftless spiral pipe. The two ends of the feed pipe are respectively connected to the material box and the first shell. The shaftless spiral pipe is sleeved in the feed pipe and connected to the motor.

2. The soil remediation agent spreader according to claim 1, characterized in that: It also includes a stirring mechanism, which is arranged in the material box; The stirring mechanism includes: a first rotating shaft and a plurality of stirring rods, wherein both ends of the first rotating shaft are connected to the material box, the plurality of stirring rods are arranged in sequence along the axial direction of the first rotating shaft, two adjacent stirring rods are arranged at an angle, and both ends of each stirring rod are respectively connected to a protrusion.

3. The soil remediation agent spreader according to claim 1, characterized in that: Also included is a discrete mechanism, wherein the discrete mechanism is disposed in the first housing; The discrete mechanism includes: a second rotating shaft and a plurality of conical discrete devices, both ends of the second rotating shaft are connected to the first shell, and the plurality of conical discrete devices are arranged in sequence along the axial direction of the second rotating shaft.

4. The soil remediation agent spreader according to claim 3, characterized in that: Each of the cone-shaped discrete devices comprises: a tube body, a plurality of connecting rods and a plurality of cone-shaped discrete teeth, wherein the tube body is sleeved on the outside of the second rotating shaft, and each of the cone-shaped discrete teeth is connected to the tube body through one of the connecting rods; A plurality of the conical discrete teeth are arranged around the tube body.

5. The soil remediation agent spreader according to claim 1, characterized in that: It also includes a dust removal mechanism, which includes: a plurality of air suction structures, a first air suction pipe, a second air suction pipe, a fan and a cyclone separator; A plurality of the air intake structures are connected to the first air intake pipe, and the air intake structures are arranged in the first shell; Two ends of the second air intake pipe are respectively connected to the fan and the first air intake pipe; The cyclone separator is communicated with the material box, and the cyclone separator is arranged on the second air intake pipe.

6. The soil remediation agent spreader according to claim 5, characterized in that: Each of the air suction structures comprises a second shell, the second shell is communicated with the first air suction pipe, the second shell is provided with an opening, a plurality of filter teeth are arranged in the second shell, and the filter teeth are arranged adjacent to the opening.

7. The soil remediation agent spreader according to claim 6, characterized in that: It also includes an adjustment mechanism, the first shell is connected to the material box through the adjustment mechanism, and the adjustment mechanism is used to adjust the height of the first shell; The adjustment mechanism includes: a connecting shaft, a plurality of parallelogram structures and a push rod; the plurality of parallelogram structures are arranged in sequence along the extension direction of the length of the material box, and two ends of each of the parallelogram structures are respectively connected to the material box and the first shell; The connecting shaft is passed through the plurality of parallelogram structures, and both ends of the push rod are respectively connected to the frame and the connecting shaft. When the push rod is extended or retracted, the plurality of parallelogram structures can be driven to rise or fall.

8. The soil remediation agent spreader according to claim 7, characterized in that: Also includes: a first distance measuring device, a second distance measuring device and a controller; The first distance measuring device is disposed on the first housing, and is used to detect a first distance between the first housing and the ground; The second distance measuring device is connected to the push rod, and the second distance measuring device is used to detect a second distance between the first housing and the ground; The controller is used to calculate a target adjustment height of the first housing based on the first distance and the second distance, and to control the extension and retraction amount of the push rod based on the target adjustment height.

9. The soil remediation agent spreader according to claim 8, characterized in that: The second distance measuring device comprises: a contour wheel, a first bracket, a second bracket, an encoder, a universal joint and a fixing rod; The first end of the first bracket is connected to the rotating shaft of the contour wheel, and the second end of the first bracket is rotatably connected to the second bracket via an encoder; The second bracket is connected to the fixing rod through a universal joint, and the fixing rod is connected to the push rod.

10. A control method for a soil remediation agent spreader according to any one of claims 1 to 9, characterized in that: include: Acquire a first distance between the first shell and the ground, and a second distance between the first shell and the ground, calculate a target adjustment height of the first shell based on the first distance and the second distance, and control the extension and retraction amount of the push rod based on the target adjustment height; The discharge rate and flow rate of the soil remediation agent are obtained in real time, and the rotation speeds of the discrete mechanism and the dust removal mechanism are controlled based on the discharge rate, the flow rate and a closed-loop feedback control strategy.

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