Soil conditioner spreader and its control method

Abstract

The present invention belongs to the technical field of soil improvement, and discloses a soil conditioner spreader and its control method. The soil conditioner spreader of the present invention includes a tractor and a control system. A rotary tillage and soil turning device and a mixing and dosing device are successively arranged on the tractor from front to back. An on-vehicle conductivity meter is mounted at the bottom of the frame of the tractor and on the front side of the mixing and dosing device. A speed sensor is also arranged on the tractor. The rotary tillage and soil turning device is used to loosen the soil, and the on-vehicle conductivity meter is used to continuously measure the salt content of the soil. The mixing and dosing device sprays the improved medicament solution onto the loosened soil. The control system controls the operation of each device, and comprehensively and dynamically adjusts the medicament spraying amount according to the soil salt content measured by the on-vehicle conductivity meter and the driving speed measured by the speed sensor. The present invention can spread the conditioner targeted for different soil textures, achieve precise and efficient fertilization, improve the improvement efficiency and effect of saline-alkali soil, and is simple to operate, cost-reducing and efficiency-increasing.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil improvement, and particularly relates to a soil conditioner spreader and a control method thereof. Background Art

[0002] Saline-alkali land refers to land where the salt content in the soil is large and the pH value of the soil is relatively high, which affects the normal growth of crops. Saline-alkali land can be divided into light saline-alkali land, medium saline-alkali land and heavy saline-alkali land. The essence of its formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so that the salts gradually accumulate on the soil surface in the salt-accumulating area, forming saline-alkali land. The surface soil of saline-alkali land is mostly dry, white, and even forms a salt crust, which is hard and cracked, with a high salinity and strong corrosiveness. It can damage the plant cell tissue, hinder plant growth, and even directly cause the roots of plants to rot and the plants to die in high-salinity soil. The problems of soil salinization and secondary salinization have become unavoidable problems in agricultural production and are the main obstacles restricting the agricultural development in arid and semi-arid regions. In order to improve the survival rate of crops in saline-alkali land, it is necessary to carry out soil and water improvement on saline-alkali land.

[0003] Spreading a conditioner is one of the important measures to regulate the soil and improve saline-alkali land. The existing Chinese patent CN219961300U discloses a spraying device for a saline-alkali land soil conditioner, which includes a mobile vehicle, a medicine spraying pipe and multiple groups of nozzles. The medicine spraying pipe is fixedly installed on the mobile vehicle, and multiple groups of nozzles are all installed on the medicine spraying pipe and are all communicated with the medicine spraying pipe; it also includes a fixing plate, two groups of connecting plates, a motor, a roller, a lifting device, a storage device and a conveying device. The fixing plate is installed on the left part of the mobile vehicle through the lifting device, and the lifting device is used to lift the fixing plate. Two groups of connecting plates are fixedly installed at the lower end of the fixing plate, the motor is fixedly installed on the front connecting plate, the roller is rotatably installed on the two groups of connecting plates, and the front end of the roller is connected to the output end of the motor. The spraying device of this patent reduces the evaporation of the soil conditioner, enables the soil conditioner to fully contact with the soil, has a good improvement effect on the soil, and has high practicability.

[0004] However, the spraying device of the above patent uses the same application rate of the conditioner on one farmland or a piece of farmland. For large areas of saline-alkali soil, the salt content in the soil of different regions will vary greatly, and the degree of salinization is also different. At the same time, the operating speed of the spraying device will also vary with different soil qualities. Therefore, it is necessary to adjust the spreading of the conditioner according to different soil qualities to achieve more precise soil improvement, avoid problems such as waste and environmental pollution caused by excessive application of the conditioner, or the situation where too little conditioner is applied and fails to achieve the improvement effect, and improve the improvement efficiency and effect of saline-alkali land soil. Summary of the Invention

[0005] The present invention aims to solve the technical problems existing in the prior art, and provides a soil conditioner spreader and its control method, which can spread the conditioner specifically according to the soil quality of different regions, achieve precise and efficient fertilization, significantly improve the improvement efficiency and effect of saline-alkali soil, and has simple operation, cost reduction and efficiency increase.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] A soil conditioner spreader includes a tractor and a control system. A rotary tillage device and a mixing and dosing device are sequentially arranged on the tractor from front to back. An on-vehicle conductivity meter is mounted at the bottom of the frame of the tractor, in front of the mixing and dosing device. A speed sensor is also arranged on the tractor;

[0008] The rotary tillage device is used to loosen the soil, and the on-vehicle conductivity meter is used to continuously measure the salt content of the soil; the mixing and dosing device sprays the improved reagent liquid onto the loosened soil;

[0009] At the same time, the tractor, the rotary tillage device, the mixing and dosing device, the on-vehicle conductivity meter and the speed sensor are all connected to the control system; the control system controls the operation of each device. At the same time, the control system dynamically regulates the reagent spraying amount comprehensively according to the soil salt content measured by the on-vehicle conductivity meter and the driving speed measured by the speed sensor.

[0010] Further, the rotary tillage device is arranged at the front end of the tractor and includes a hydraulic cylinder and a rotary tillage device. The hydraulic cylinder is drivingly connected to the rotary tillage device and is used to adjust the lifting height of the rotary tillage device.

[0011] Further, the mixing and dosing device includes a reagent box body. A dosing hopper and a first water injection port are arranged at the upper end of the reagent box body. A stirring assembly is arranged in the reagent box body. A stirring motor is arranged on one side of the reagent box body, and the stirring motor is drivingly connected to the stirring assembly;

[0012] The reagent outlet on one side of the bottom of the reagent box body is connected to a first water pump, the first water pump is connected to a first electromagnetic regulating valve, and the first electromagnetic regulating valve is connected to a reagent spray head.

[0013] Furthermore, a first water level meter is arranged in the reagent box body, and the first water level meter is signal-connected to the control system for monitoring the liquid level of the improved reagent liquid:

[0014] When the liquid level of the improved reagent liquid is lower than the lower limit of the reagent liquid level, the control system is triggered to issue a reagent replenishment alarm prompt.

[0015] Further, an on-vehicle conductivity meter is mounted at the bottom of the frame of the tractor, in front of the reagent spray head of the mixing and dosing device;

[0016] The vehicle-mounted conductivity meter uses an EM38-MK2 geoelectric conductivity meter.

[0017] Furthermore, the vehicle-mounted conductivity meter is placed on a receiving rack, and the receiving rack includes a fixed bracket and an L-shaped support bracket;

[0018] There is one fixed bracket on each of the left and right sides. The upper end of the fixed bracket is fixedly connected to the bottom of the vehicle frame, and the bottom end is threadedly connected to the L-shaped support bracket with adjustable height; the vehicle-mounted conductivity meter is mounted on the left and right L-shaped support brackets.

[0019] Furthermore, a reinforcing rib plate is welded between the fixed bracket and the bottom of the vehicle frame.

[0020] Further, a water replenishing device is provided on the tractor behind the mixing and dosing device. The water replenishing device is used to spray water on the soil with a salt content higher than the set threshold;

[0021] The water replenishing device is connected to the control system, and the control system regulates the water replenishing amount according to the soil salt content measured by the vehicle-mounted conductivity meter and the driving speed measured by the speed sensor.

[0022] Furthermore, the water replenishing device includes a water replenishing tank body, and a second water injection port is provided at the upper end of the water replenishing tank body;

[0023] A water replenishing outlet on one side of the bottom of the water replenishing tank body is connected to a second water pump, the second water pump is connected to a second electromagnetic regulating valve, and the second electromagnetic regulating valve is connected to a water replenishing nozzle;

[0024] When it is detected that the soil salt content is higher than the set threshold salt content, start the water replenishing device to spray water, and regulate the water replenishing amount according to the soil salt content measured by the vehicle-mounted conductivity meter and the driving speed measured by the speed sensor;

[0025] When the detected soil salt content is less than or equal to the set threshold salt content, turn off the water replenishing device.

[0026] Furthermore, a second water level gauge is arranged in the water replenishing tank body, and the second water level gauge is signal-connected to the control system for monitoring the water level in the water replenishing tank body:

[0027] When the water level is lower than the lower limit of the water level and the soil salt content detected by the vehicle-mounted conductivity meter is higher than the set threshold salt content, trigger the control system to issue a water replenishing alarm prompt.

[0028] Meanwhile, a control method for a soil conditioner spreader is also provided, and the control method includes the following steps:

[0029] Step S1: Configure or add a modified chemical liquid with a set concentration in the mixing and dosing device;

[0030] Step S2: Preset initial parameters, specifically including:

[0031] Given an initial driving speed V0, measure the initial soil salt content W0 through an on-vehicle conductivity meter;

[0032] Determine the initial drug dosage Q10 according to the concentration of the improvement agent solution and the initial driving speed V0;

[0033] Step S3: Start the tractor, the rotary tillage device performs rotary tillage, and the medicine nozzle of the mixing and dosing device sprays the improvement agent solution above the tillage;

[0034] Meanwhile, the speed sensor monitors the real-time driving speed V, and the on-vehicle conductivity meter monitors the real-time soil salt content W; the control system adjusts the current drug dosage Q11 in real time according to the real-time driving speed V and the real-time soil salt content W.

[0035] Furthermore, in the said step S3, the control system adjusts the current drug dosage Q11 in real time according to the real-time driving speed V and the real-time soil salt content W, and the adjustment formula is:

[0036]

[0037] Furthermore, after the said step S3, the following steps are also included:

[0038] Step S4: During the whole driving process, the mixing and dosing device monitors the liquid level of the improvement agent solution in the mixing and dosing device in real time through the built-in first water level gauge;

[0039] When the first water level gauge detects that the liquid level of the improvement agent solution is lower than the lower limit of the liquid level of the medicine, trigger the control system to issue a medicine replenishment alarm prompt.

[0040] In addition, a control method for a soil improvement agent spreader is also provided, and the control method includes:

[0041] Step S1: Configure or add an improvement agent solution with a set concentration in the mixing and dosing device, and fill the water replenishing tank of the water replenishing device with water;

[0042] Step S2: Preset initial parameters, specifically including:

[0043] Given an initial driving speed V0, measure the initial soil salt content W0 through an on-vehicle conductivity meter;

[0044] Determine the initial drug dosage Q10 according to the concentration of the improvement agent solution and the initial driving speed V0;

[0045] Determine the soil salt content W1 that triggers the water replenishing device to replenish water according to the soil condition of the area to be improved and the concentration of the improvement agent solution;

[0046] Determine the initial water replenishment volume Q20 according to the concentration of the improved reagent solution, the initial driving speed V0, and the set threshold salt content W1 for triggering the water replenishment device to replenish water.

[0047] Step S3: Start the tractor, and the rotary tillage device performs rotary tillage. The reagent spray head of the mixing and dosing device sprays the improved reagent solution above the tillage.

[0048] Meanwhile, the speed sensor monitors the real-time driving speed V, and the on-vehicle conductivity meter monitors the real-time soil salt content W. The control system adjusts the current dosing amount Q11 and the current water replenishment volume Q22 in real time according to the real-time driving speed V and the real-time soil salt content W.

[0049] Furthermore, in step S3, the control system adjusts the current dosing amount Q11 and the current water replenishment volume Q22 in real time according to the real-time driving speed V and the real-time soil salt content W. The adjustment formula is as follows:

[0050]

[0051] Furthermore, after the step S3, the following steps are further included:

[0052] Step S4: During the entire driving process, the mixing and dosing device uses the built-in first water level gauge to monitor the liquid level of the improved reagent solution in the mixing and dosing device in real time. When the first water level gauge detects that the liquid level of the improved reagent solution is lower than the lower limit of the reagent liquid level, it triggers the control system to issue a reagent replenishment alarm prompt to prompt the operator to replenish the improved reagent solution in time;

[0053] Meanwhile, the water replenishment device uses the built-in second water level gauge to monitor the water level of the water replenishment device in real time. When the second water level gauge detects that the water level of the water replenishment device is lower than the lower limit of the water level and the real-time soil salt content W detected by the on-vehicle conductivity meter is higher than the set threshold salt content W1, it triggers the control system to issue a water replenishment alarm prompt to prompt the operator to replenish water to the water replenishment device in time.

[0054] Compared with the prior art, the beneficial effects produced by the present invention are:

[0055] (1) The present invention realizes non-contact and vehicle-mounted real-time measurement of soil salt content through vehicle-mounted sensors, and measures the driving speed in real time through speed sensors. The control system dynamically regulates the chemical spraying amount of the mixing chemical dosing device according to the real-time measured soil salt content and driving speed, and can dynamically adjust the dosage of the spread improvement agent according to the high or low soil salt content of different soil types and the fast or slow driving speed of soil turning for different soil types. It can effectively avoid problems such as waste and environmental pollution caused by excessive application of the improvement agent, or the situation where the improvement effect cannot be achieved due to too little application of the improvement agent, realizing precise fertilization, with automatic and intelligent operation, high operation efficiency, significantly improving the improvement efficiency and improvement effect of saline-alkali soil, reducing costs and increasing efficiency;

[0056] (2) The water replenishing device set in the present invention can perform water replenishing operations on high-salinity soil. When the soil salt content detected by the vehicle-mounted sensor in real time is higher than the set threshold salt content, the water replenishing mechanism is triggered at this time. On the basis of the sprayed improvement agent solution with a set concentration, additional water is sprayed through the water replenishing device to replenish water to the high-salinity soil, which can further improve the improvement effect of the improvement agent solution on the soil, and without changing the configuration concentration of the original configured improvement agent solution, the operation is more convenient and efficient;

[0057] (3) At the same time, the water replenishing amount of the water replenishing device is also dynamically regulated according to the real-time detected soil salt content and driving speed, and the water-saving and efficiency-increasing effect is remarkable;

[0058] (4) Water level gauges are set in both the mixing chemical dosing device and the water replenishing device, which can achieve: when the liquid level of the improvement agent solution is lower than the lower limit of the chemical liquid level, the control system is triggered to issue a chemical replenishment alarm prompt to prompt the operator to replenish the improvement agent solution in time to avoid the occurrence of empty spraying during driving; when the water level in the water replenishing device is lower than the lower limit of the water level and the real-time soil salt content detected by the vehicle-mounted conductivity meter is higher than the set threshold salt content, the control system is triggered to issue a water replenishment alarm prompt to prompt the operator to replenish water to the water replenishing device in time, and the operation is more convenient;

[0059] (5) In addition, when the water replenishing device issues a water replenishment alarm, it needs to simultaneously meet the two conditions of "the water level in the water replenishing device is lower than the lower limit of the water level" and "the real-time soil salt content detected by the vehicle-mounted conductivity meter is higher than the set threshold salt content", avoiding the situation of overloading caused by unnecessary water loading of the tractor in the soil area where water replenishment is not required after prompting an alarm in the soil area where water replenishment is not required, and maximizing energy conservation, cost reduction and operation efficiency. Description of the Drawings

[0060] Figure 1 It is a schematic structural diagram of the soil improvement agent spreader according to an embodiment of the present invention;

[0061] Figure 2Flow chart of the control method for the soil conditioner spreader according to the embodiment of the present invention;

[0062] Figure 3 Flow chart of the control method for the soil conditioner spreader according to another embodiment of the present invention;

[0063] Explanation of the markings in the figure:

[0064] 1 - Tractor; 2 - Hydraulic cylinder; 3 - Rotary tillage and soil turning device; 3.1 - Rotary tillage fixing frame; 3.2 - Rotary tillage blades; 3.3 - Rotary tillage motor; 4 - Speed sensor; 5 - Stirring motor; 6 - Stirring assembly; 7 - Chemical dosing hopper; 8 - First water injection port; 9 - Second water injection port; 10 - Filter screen; 11 - First water pump; 12 - First electromagnetic regulating valve; 13 - Chemical agent spray head; 14 - Second water pump; 15 - Second electromagnetic regulating valve; 16 - Water replenishing spray head; 17 - On-vehicle conductivity meter; 18 - Fixed support; 19 - L-shaped support frame; 20 - Reinforcing rib plate; 21 - First water level gauge; 22 - Second water level gauge; 23 - Hinge connecting plate. Detailed implementation manners

[0065] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0066] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0067] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0068] Embodiment 1

[0069] Combined with Figure 1 As shown, an embodiment of the present invention provides a soil conditioner spreader, including a tractor 1 and a control system. A rotary tillage device 3 and a mixing and dosing device are sequentially arranged on the tractor 1 from front to back. At the same time, an on-vehicle conductivity meter 17 is mounted at the bottom of the frame of the tractor 1 and in front of the mixing and dosing device. A speed sensor 4 is also arranged on the tractor 1;

[0070] The rotary tillage device 3 is used for loosening the soil, and the on-vehicle conductivity meter 17 is used for continuously measuring the salt content of the soil; the mixing and dosing device is used for mixing the conditioner and water evenly to form a conditioning agent liquid, which is sprayed on the loosened soil;

[0071] The tractor 1, the rotary tillage device 3, the mixing and dosing device, the on-vehicle conductivity meter 17 and the speed sensor 4 are all connected to the control system. The control system controls the operation of each device and regulates the dosing amount according to the soil salt content measured by the on-vehicle conductivity meter 17 and the driving speed measured by the speed sensor.

[0072] Specifically, the rotary tillage device 3 is arranged at the front end of the tractor 1 and includes a hydraulic cylinder 2 and a rotary tillage device. The hydraulic cylinder 2 is drivingly connected to the rotary tillage device and is used for adjusting the lifting height of the rotary tillage device, thereby adjusting the depth of rotary tillage and soil loosening; the rotary tillage device specifically includes a rotary tillage fixing frame 3.1, rotary tillage blades 3.2 and a rotary tillage motor 3.3; the rotary tillage blades 3.2 are placed in the rotary tillage fixing frame 3.1. A rotary tillage motor 3.3 is arranged on one side of the rotary tillage fixing frame 3.1. The rotary tillage motor 3.3 is connected to the rotary tillage blades 3.2 through a drive shaft to drive the rotary tillage blades 3.2 to rotate for soil turning; several groups of rotary tillage blades 3.2 are arranged along the rotary tillage width direction, and each group of rotary tillage blades 3.2 is evenly arranged circumferentially along the drive shaft; the hydraulic cylinder 2 is drivingly connected to a hinged connecting plate 23. One end of the hinged connecting plate 23 hinged to the hydraulic cylinder 2 is fixedly connected to the rotary tillage fixing frame, and the other end of the hinged connecting plate 23 is hinged to the front end of the tractor 1, so as to realize the hydraulic cylinder 2 driving the rotary tillage device to rotate and lift relative to the front end of the tractor 1, and further adjust the depth of rotary tillage and soil loosening.

[0073] The mixing and dosing device is arranged on the frame at the rear end of the tractor 1. The mixing and dosing device includes a medicine box body. A medicine hopper 7 and a first water injection port 8 are arranged at the upper end of the medicine box body. A stirring assembly 6 is arranged in the medicine box body, and a stirring motor 5 is arranged on one side of the medicine box body. The stirring motor 5 is drivingly connected to the stirring assembly 6.

[0074] Before spraying the improved agent liquid, first add the modifier through the dosing hopper 7, inject water through the first water injection port 8, and drive the stirring assembly 6 to stir and mix the modifier and water through the stirring motor 5 to form the improved agent liquid.

[0075] Meanwhile, a chemical agent outlet on one side of the bottom of the chemical agent box body is connected to a first water pump 11, the first water pump 11 is connected to a first electromagnetic regulating valve 12, and the first electromagnetic regulating valve 12 is connected to a chemical agent spray head 13.

[0076] When spraying the improved agent liquid, the first water pump 11 pumps out the improved agent liquid from the chemical agent outlet, and after regulating the flow rate by controlling the rotation speed of the first water pump 11 and the opening degree of the first electromagnetic regulating valve 12, it is sprayed downward through the chemical agent spray head 13.

[0077] In some embodiments, filter meshes 10 are respectively arranged in the dosing hopper 7 and the first water injection port 8, which are respectively used for filtering large particles or agglomerated modifiers, and filtering weeds or impurities in the injected water, etc.

[0078] At the bottom of the frame of the tractor 1, in front of the chemical agent spray head of the mixing and dosing device, a vehicle-mounted conductivity meter 17 is carried; the vehicle-mounted conductivity meter 17 is placed on a placement rack, and the placement rack includes a fixed bracket 18 and an L-shaped support bracket 19; there is one fixed bracket 18 on each of the left and right sides, the upper end of the fixed bracket 18 is fixedly connected to the bottom of the frame, and the bottom end is threadedly connected to the L-shaped support bracket 19 with adjustable height, and the vehicle-mounted conductivity meter 17 is carried on the two L-shaped support brackets 19 on the left and right.

[0079] The vehicle-mounted conductivity meter 17 specifically adopts an EM38-MK2 ground conductivity meter. The EM38-MK2 can measure the conductivity and magnetic susceptibility at two different depths simultaneously without direct contact with the soil, so as to realize the on-vehicle and continuous detection of soil salinity. The maximum detection depth is 1.5 meters, and it can detect under any surface conditions including high-resistivity materials such as sand, stones, and asphalt, and has the characteristics of simple and rapid operation, continuous and large-capacity data acquisition, high spatial resolution, and high measurement accuracy. The control system regulates the dosage of the sprayed chemical agent according to the soil salt content detected by the vehicle-mounted conductivity meter 17.

[0080] In some embodiments, a reinforcing rib plate 20 is welded between the fixed bracket 18 and the bottom of the frame to enhance the structural strength and support force of the placement rack.

[0081] The speed sensor 4 is arranged on one side of the wheel of the tractor 1, which is used to detect the driving speed and feedback it to the control system, and the control system regulates the dosage of the chemical agent and the water make-up amount according to the driving speed.

[0082] In some embodiments, a first water level gauge 21 is provided inside the chemical agent tank, and the first water level gauge 21 is signal-connected to the control system for monitoring the liquid level of the improved chemical agent solution:

[0083] When the liquid level of the improved chemical agent solution is lower than the lower limit of the chemical agent liquid level, it triggers the control system to issue a chemical agent replenishment alarm prompt, prompting the operator to replenish the improved chemical agent solution in a timely manner to avoid the occurrence of empty spraying by the vehicle.

[0084] The control system is arranged in the cab of the tractor 1.

[0085] In the embodiment of the present invention, non-contact and vehicle-mounted real-time measurement of soil salt content is achieved through vehicle-mounted sensors, and the driving speed of the vehicle is measured in real time through a speed sensor. The control system dynamically adjusts the chemical agent spraying amount of the mixing and dosing device comprehensively according to the real-time measured soil salt content and driving speed of the vehicle, and can dynamically adjust the dosage of the spreading modifier pertinently according to the high or low soil salt content of different soil types and the fast or slow driving speed of soil turning of different soil types, which can effectively avoid problems such as waste and environmental pollution caused by excessive application of the modifier, or the situation where the modifier is applied too little to achieve the improvement effect, realize precise fertilization, and has automatic and intelligent operation, high operation efficiency, and significantly improve the improvement efficiency and improvement effect of saline-alkali soil.

[0086] In addition, a water level gauge is provided in the mixing and dosing device. When the liquid level of the improved chemical agent solution is lower than the lower limit of the chemical agent liquid level, it triggers the control system to issue a chemical agent replenishment alarm prompt, prompting the operator to replenish the improved chemical agent solution in a timely manner to avoid the occurrence of empty spraying by the vehicle, and the operation is more convenient.

[0087] Embodiment 2

[0088] Combined with Figure 1 As shown, the embodiment of the present invention provides a soil modifier spreader, including a tractor 1 and a control system. A rotary tillage and soil turning device 3, a mixing and dosing device, and a water replenishing device are sequentially arranged on the tractor 1 from front to back. At the same time, an on-vehicle conductivity meter 17 is mounted on the bottom of the frame of the tractor 1 on the front side of the mixing and dosing device, and a speed sensor 4 is also arranged on the tractor 1;

[0089] The rotary tillage and soil turning device 3 is used for loosening the soil, and the on-vehicle conductivity meter 17 is used for continuously measuring the salt content of the soil; the mixing and dosing device is used for mixing the modifier and water evenly to form an improved chemical agent solution and spraying it on the loosened soil; the water replenishing device is used for spraying water on the soil with a salt content higher than the set threshold;

[0090] The tractor 1, the rotary tillage and soil turning device 3, the mixing and dosing device, the water replenishing device, the on-vehicle conductivity meter 17 and the speed sensor 4 are all connected to the control system. The control system controls the operation of each device and regulates the chemical spraying amount and water replenishing amount according to the soil salt content measured by the on-vehicle conductivity meter 17 and the driving speed measured by the speed sensor.

[0091] Specifically, the rotary tillage and soil turning device 3 is arranged at the front end of the tractor 1 and includes a hydraulic cylinder 2 and a rotary tillage device. The hydraulic cylinder 2 is drivingly connected to the rotary tillage device and is used to adjust the lifting height of the rotary tillage device, thereby adjusting the depth of rotary tillage and soil loosening. The rotary tillage device specifically includes a rotary tillage fixing frame 3.1, rotary tillage blades 3.2 and a rotary tillage motor 3.3. The rotary tillage blades 3.2 are placed in the rotary tillage fixing frame 3.1. A rotary tillage motor 3.3 is arranged on one side of the rotary tillage fixing frame 3.1. The rotary tillage motor 3.3 is connected to the rotary tillage blades 3.2 through a drive shaft to drive the rotary tillage blades 3.2 to rotate for soil turning. A plurality of groups of rotary tillage blades 3.2 are arranged along the rotary tillage width direction, and each group of rotary tillage blades 3.2 is evenly arranged circumferentially along the drive shaft. The hydraulic cylinder 2 is drivingly connected to a hinged connecting plate 23. One end of the hinged connecting plate 23 hinged to the hydraulic cylinder 2 is fixedly connected to the rotary tillage fixing frame, and the other end of the hinged connecting plate 23 is hinged to the front end of the tractor 1, so as to realize the hydraulic cylinder 2 driving the rotary tillage device to rotate and lift relative to the front end of the tractor 1, and further adjust the depth of rotary tillage and soil loosening.

[0092] The mixing and dosing device is arranged on the vehicle frame at the rear end of the tractor 1. The mixing and dosing device includes a chemical agent box body. A chemical agent hopper 7 and a first water injection port 8 are arranged at the upper end of the chemical agent box body. A stirring assembly 6 is arranged in the chemical agent box body, and a stirring motor 5 is arranged on one side of the chemical agent box body. The stirring motor 5 is drivingly connected to the stirring assembly 6.

[0093] Before spraying the improved chemical agent liquid, first add the improver through the chemical agent hopper 7, inject water through the first water injection port 8, and drive the stirring assembly 6 to stir and mix the improver and water through the stirring motor 5 to form the improved chemical agent liquid.

[0094] Meanwhile, a chemical agent outlet on one side of the bottom of the chemical agent box body is connected to a first water pump 11. The first water pump 11 is connected to a first electromagnetic regulating valve 12. The first electromagnetic regulating valve 12 is connected to a chemical agent spray head 13.

[0095] When spraying the improved chemical agent liquid, the first water pump 11 pumps out the improved chemical agent liquid from the chemical agent outlet, and after regulating the flow rate by controlling the rotation speed of the first water pump 11 and the opening degree of the first electromagnetic regulating valve 12, it is sprayed downward through the chemical agent spray head 13.

[0096] In some embodiments, filter meshes 10 are provided in both the chemical dosing hopper 7 and the first water injection port 8, respectively for filtering large particles or agglomerated modifiers, and filtering weeds or impurities in the injected water, etc.

[0097] The water replenishing device includes a water replenishing tank body. A second water injection port 9 is provided at the upper end of the water replenishing tank body. A water replenishing outlet on one side of the bottom of the water replenishing tank body is connected to a second water pump 14. The second water pump 14 is connected to a second electromagnetic regulating valve 15. The second electromagnetic regulating valve 15 is connected to a water replenishing spray head 16.

[0098] When it is detected that the soil salt content is higher than the set threshold salt content, the second water pump 14 is started, and after regulating the water replenishing amount through the rotation speed of the second water pump 14 and the opening degree of the second electromagnetic regulating valve 15, water is sprayed through the water replenishing spray head 16, so as to increase the water spraying on the high-salinity soil and improve the soil improvement effect.

[0099] It should be emphasized that only when the detected soil salt content is higher than the set threshold salt content, the water replenishing device will be started to replenish water, and the water replenishing amount will be regulated according to the soil salt content measured by the on-vehicle conductivity meter and the driving speed measured by the speed sensor; when the detected soil salt content is less than or equal to the set threshold salt content, the water replenishing device will be closed.

[0100] In some embodiments, a filter mesh 10 is also provided in the second water injection port 9 for filtering weeds or impurities in the injected water, etc.

[0101] On the frame part of the tractor 1, an on-vehicle conductivity meter 17 is mounted in front of the chemical agent spray head of the mixing chemical dosing device. The on-vehicle conductivity meter 17 is placed on a mounting rack. The mounting rack includes a fixed bracket 18 and an L-shaped support frame 19; there is one fixed bracket 18 on each of the left and right sides. The upper end of the fixed bracket 18 is fixedly connected to the bottom of the frame, and the bottom end is threadedly connected to the L-shaped support frame 19 with adjustable height. The on-vehicle conductivity meter 17 is mounted on the two L-shaped support frames 19 on the left and right.

[0102] The on-vehicle conductivity meter 17 specifically adopts an EM38-MK2 geoelectric conductivity meter. The EM38-MK2 can measure the conductivity and magnetic susceptibility at two different depths simultaneously without direct contact with the soil, so as to realize the on-vehicle and continuous detection of soil salinity. The maximum detection depth is 1.5 meters, and it can detect under any surface conditions including high-resistivity materials such as sand, stones and asphalt, and has the characteristics of simple and rapid operation, continuous and large-capacity data acquisition, high spatial resolution, high measurement accuracy, etc. The control system regulates the dosage of the sprayed chemical agent and the water replenishing amount according to the soil salt content detected by the on-vehicle conductivity meter 17.

[0103] In some embodiments, a reinforcing rib plate 20 is welded between the fixed bracket 18 and the bottom of the vehicle frame to enhance the structural strength and support force of the accommodating frame.

[0104] The speed sensor 4 is arranged on one side of the wheel of the tractor 1 to detect the driving speed and feedback it to the control system, and the control system adjusts the dosage of the medicine and the water replenishment amount according to the driving speed.

[0105] In some embodiments, a first water level gauge 21 is arranged in the medicine tank, and the first water level gauge 21 is signal-connected to the control system to monitor the liquid level of the improved medicine liquid. When the liquid level of the improved medicine liquid is lower than the lower limit of the medicine liquid level, the control system is triggered to issue a medicine replenishment alarm prompt to prompt the operator to replenish the improved medicine liquid in time to avoid the occurrence of empty spraying during driving.

[0106] A second water level gauge 22 is arranged in the water replenishment tank, and the second water level gauge 22 is signal-connected to the control system to monitor the water level in the water replenishment tank: when the water level is lower than the lower limit of the water level and the soil salt content detected by the on-vehicle conductivity meter 17 is higher than the set threshold salt content, the control system is triggered to issue a water replenishment alarm prompt to prompt the operator to replenish water to the water replenishment device in time.

[0107] The control system is arranged in the cab of the tractor 1.

[0108] By adding a water replenishment device in the embodiment of the present invention, water replenishment operation can be carried out for high-salinity soil: when the soil salt content detected by the on-vehicle sensor in real time is higher than the set threshold salt content, the water replenishment mechanism is triggered at this time, and on the basis of the set concentration of the improved medicine liquid sprayed, the water replenishment device sprays water additionally to replenish water to the high-salinity soil, which can further improve the improvement effect of the improved medicine liquid on the soil; at the same time, the water replenishment amount of the water replenishment device is also dynamically adjusted according to the soil salt content detected in real time and the driving speed, and the water-saving and efficiency-increasing effect is remarkable.

[0109] In addition, water level gauges are arranged in both the mixing and dosing device and the water replenishment device, which can achieve: when the liquid level of the improved medicine liquid is lower than the lower limit of the medicine liquid level, the control system is triggered to issue a medicine replenishment alarm prompt to prompt the operator to replenish the improved medicine liquid in time to avoid the occurrence of empty spraying during driving; when the water level of the water replenishment device is lower than the lower limit of the water level and the real-time soil salt content detected by the on-vehicle conductivity meter is higher than the set threshold salt content, the control system is triggered to issue a water replenishment alarm prompt to prompt the operator to replenish water to the water replenishment device in time, and the operation is more convenient.

[0110] Embodiment 3

[0111] The embodiment of the present invention provides a control method for a soil conditioner spreader, which adopts the soil conditioner spreader in Embodiment 1, combined with Figure 2 As shown, the control method includes the following steps:

[0112] Step S1: Add a modifier and water to the mixing chemical adding device, stir and mix them evenly to prepare a modified chemical liquid with a set concentration.

[0113] Step S2: Preset initial parameters, specifically including:

[0114] Given an initial driving speed V0, measure the initial soil salt content W0 through the on-vehicle conductivity meter 17.

[0115] Determine the initial drug delivery dose Q10 according to the concentration of the modified chemical liquid and the initial driving speed V0.

[0116] Step S3: Start the tractor 1, and the rotary tillage soil turning device 3 performs rotary tillage and soil turning. The chemical liquid nozzle of the mixing chemical adding device sprays the modified chemical liquid above the turned soil.

[0117] Meanwhile, the speed sensor 4 monitors the real-time driving speed V, and the on-vehicle conductivity meter 17 monitors the real-time soil salt content W. The control system adjusts the current drug delivery dose Q11 in real time according to the real-time driving speed V and the real-time soil salt content W. The adjustment formula is:

[0118]

[0119] Specifically, the control system jointly adjusts the current drug delivery dose Q11 by adjusting the rotation speed of the first water pump 11 and the opening degree of the first electromagnetic regulating valve 12; when the driving speed V increases and / or the real-time soil salt content W increases, increase the current drug delivery dose Q11; when the driving speed V decreases and / or the real-time soil salt content W decreases, reduce the current drug delivery dose Q11.

[0120] Step S4: During the entire driving process, the first water level gauge 21 in the mixing chemical adding device monitors the liquid level of the modified chemical liquid in the mixing chemical adding device in real time; when the first water level gauge 21 detects that the liquid level of the modified chemical liquid is lower than the lower limit of the chemical liquid level, trigger the control system to send a chemical replenishment alarm prompt to prompt the operator to replenish the modified chemical liquid in time to avoid the occurrence of empty spraying during driving.

[0121] The control system of the embodiment of the present invention comprehensively and dynamically adjusts the chemical spraying amount of the mixing chemical adding device according to the real-time measured soil salt content and driving speed. When the driving speed increases and / or the real-time soil salt content increases, increase the current drug delivery dose; when the driving speed decreases and / or the real-time soil salt content decreases, reduce the current drug delivery dose. The control method is scientific and reasonable, the operation is automated and intelligent, and it can achieve precise and efficient fertilization, significantly improving the improvement efficiency and improvement effect.

[0122] Embodiment 4

[0123] An embodiment of the present invention provides a control method for a soil conditioner spreader. Using the soil conditioner spreader in Embodiment 2, the control method includes the following steps:

[0124] Step S1: Add the conditioner and water to the mixing and dosing device, stir and mix them evenly to prepare a conditioner liquid with a set concentration; fill the water replenishing tank of the water replenishing device with water.

[0125] Step S2: Preset initial parameters, specifically including:

[0126] Given an initial driving speed V0, measure the initial soil salt content W0 through the on-vehicle conductivity meter 17;

[0127] Determine the initial dosing amount Q10 according to the concentration of the conditioner liquid and the initial driving speed V0;

[0128] Determine the soil salt content W1 that triggers the water replenishing device to replenish water according to the soil condition of the area to be improved and the concentration of the conditioner liquid;

[0129] Determine the initial water replenishing amount Q20 according to the concentration of the conditioner liquid, the initial driving speed V0, and the set threshold salt content W1 for triggering the water replenishing device to replenish water;

[0130] Step S3: Start the tractor 1, and the rotary tilling device 3 performs rotary tilling. The medicine nozzle of the mixing and dosing device sprays the conditioner liquid above the tilling.

[0131] Meanwhile, the speed sensor 4 monitors the real-time driving speed V, and the on-vehicle conductivity meter 17 monitors the real-time soil salt content W. The control system adjusts the current dosing amount Q11 and the current water replenishing amount Q22 in real time according to the real-time driving speed V and the real-time soil salt content W. The adjustment formulas are as follows:

[0132]

[0133] Specifically, the control system jointly adjusts the current dosing amount Q11 by adjusting the rotation speed of the first water pump 11 and the opening degree of the first electromagnetic regulating valve 12; the control system jointly adjusts the current water replenishing amount Q22 by adjusting the rotation speed of the second water pump 14 and the opening degree of the second electromagnetic regulating valve 15; when the driving speed V increases and / or the real-time soil salt content W increases, increase the current dosing amount Q11 and the current water replenishing amount Q22 that meet the trigger condition for water replenishment (i.e., W > W1); when the driving speed V decreases and / or the real-time soil salt content W decreases, reduce the current dosing amount Q11 and the current water replenishing amount Q22 that meet the trigger condition for water replenishment.

[0134] Step S4: During the entire driving process, the first water level gauge 21 in the mixing chemical dosing device continuously monitors the liquid level of the improved chemical liquid in the mixing chemical dosing device. When the first water level gauge 21 detects that the liquid level of the improved chemical liquid is lower than the lower limit of the chemical liquid level, it triggers the control system to issue a chemical replenishment alarm prompt, prompting the operator to replenish the improved chemical liquid in a timely manner to avoid the occurrence of empty spraying during driving.

[0135] Meanwhile, the second water level gauge 22 in the water replenishing device continuously monitors the water level of the water replenishing device. When the second water level gauge 22 detects that the water level of the water replenishing device is lower than the lower limit of the water level and the real-time soil salt content W detected by the on-vehicle conductivity meter 17 is higher than the set threshold salt content W1, it triggers the control system to issue a water replenishment alarm prompt, prompting the operator to replenish water to the water replenishing device in a timely manner.

[0136] The control system of the embodiment of the present invention can trigger the water replenishment mechanism when the soil salt content detected by the on-vehicle sensor in real time is higher than the set threshold salt content. Based on the set concentration of the improved chemical liquid for spraying, additional water is sprayed through the water replenishing device to replenish water to the high-salinity soil, which can further improve the improvement effect of the improved chemical liquid on the soil, and the configuration concentration of the original configured improved chemical liquid does not need to be changed, and the operation is more convenient and efficient. At the same time, the water replenishment volume of the water replenishing device is also dynamically regulated according to the real-time detected soil salt content and the driving speed of the vehicle, and the water-saving and efficiency-increasing effect is very remarkable.

[0137] In addition, when the water replenishing device issues a water replenishment alarm, it needs to simultaneously meet the two conditions of "the water level of the water replenishing device is lower than the lower limit of the water level" and "the real-time soil salt content detected by the on-vehicle conductivity meter is higher than the set threshold salt content", which avoids the situation of overloading caused by unnecessary water loading of the tractor in the soil area where water replenishment is not required after prompting the alarm for water replenishment in the soil area where water replenishment is not required, and maximizes energy conservation, cost reduction and operation efficiency.

[0138] The above are only the embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the scope of the application of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soil conditioner spreader, comprising a tractor and a control system. A rotary tillage and soil turning device and a mixing and dosing device are sequentially arranged on the tractor from front to back. It is characterized in that, On the bottom of the frame of the tractor, in front of the mixing chemical dosing device, an on-vehicle conductivity meter is mounted, and a speed sensor is also provided on the tractor. The rotary tillage device is used to loosen the soil, and the on-vehicle conductivity meter is used to continuously measure the salt content of the soil; the mixing chemical dosing device sprays the improved chemical liquid onto the loosened soil. Meanwhile, the tractor, the rotary tillage device, the mixing chemical dosing device, the on-vehicle conductivity meter, and the speed sensor are all connected to the control system; the control system controls the operation of each device. At the same time, the control system dynamically adjusts the current dosing amount Q11 in real time according to the real-time soil salt content W measured by the on-vehicle conductivity meter and the real-time driving speed V measured by the speed sensor. The adjustment formula is: where V0 is the initial driving speed V0, and W0 is the initial soil salt content measured by the on-vehicle conductivity meter. V0 is the initial driving speed, and Q10 is the initial dosing amount.

2. The soil conditioner spreader according to claim 1, characterized in that, The rotary tillage device is arranged at the front end of the tractor and includes a hydraulic cylinder and a rotary tillage device. The hydraulic cylinder is drivingly connected to the rotary tillage device and is used to adjust the lifting height of the rotary tillage device.

3. The soil conditioner spreader according to claim 1, characterized in that, The mixing chemical dosing device includes a chemical agent box body. A chemical dosing hopper and a first water injection port are arranged at the upper end of the chemical agent box body. A stirring assembly is arranged in the chemical agent box body, and a stirring motor is arranged on one side of the chemical agent box body. The stirring motor is drivingly connected to the stirring assembly. A chemical agent outlet on one side of the bottom of the chemical agent box body is connected to a first water pump. The first water pump is connected to a first electromagnetic regulating valve, and the first electromagnetic regulating valve is connected to a chemical agent spray head.

4. The soil conditioner spreader according to claim 3, wherein A first water level gauge is arranged in the chemical agent box body. The first water level gauge is signal-connected to the control system and is used to monitor the liquid level of the improved chemical liquid: When the liquid level of the improved chemical liquid is lower than the lower limit of the chemical agent liquid level, the control system is triggered to issue a chemical agent replenishment alarm prompt.

5. The soil conditioner spreader according to claim 1, characterized in that, On the bottom of the frame of the tractor, in front of the chemical agent spray head of the mixing chemical dosing device, an on-vehicle conductivity meter is mounted. The on-vehicle conductivity meter adopts an EM38-MK2 geoelectric conductivity meter.

6. The soil conditioner spreader according to claim 5, characterized in that, The on-vehicle conductivity meter is placed on a placement rack, and the placement rack includes a fixed support and an L-shaped support. There is one fixed support on each side. The upper end of the fixed support is fixedly connected to the bottom of the frame, and the bottom end is threadedly connected to the L-shaped support with adjustable height; the on-vehicle conductivity meter is mounted on the two L-shaped supports on the left and right.

7. The soil conditioner spreader according to claim 6, wherein A reinforcing rib plate is welded between the fixed support and the bottom of the frame.

8. The soil conditioner spreader according to any one of claims 1-7, characterized in that, On the tractor, behind the mixing chemical dosing device, a water replenishing device is provided. The water replenishing device is used to spray water on the soil with a salt content higher than the set threshold. The water replenishing device is connected to the control system. The control system adjusts the water replenishing amount according to the soil salt content measured by the on-vehicle conductivity meter and the driving speed measured by the speed sensor.

9. The soil conditioner spreader according to claim 8, wherein, The water replenishing device includes a water replenishing tank body. A second water injection port is arranged at the upper end of the water replenishing tank body. A water replenishing outlet on one side of the bottom of the water replenishing tank body is connected to a second water pump. The second water pump is connected to a second electromagnetic regulating valve, and the second electromagnetic regulating valve is connected to a water replenishing spray head. When it is detected that the soil salt content is higher than the set threshold salt content, start the water replenishing device to spray water, and regulate the water replenishing amount according to the soil salt content measured by the vehicle-mounted conductivity meter and the driving speed measured by the speed sensor; When the detected soil salt content is less than or equal to the set threshold salt content, turn off the water replenishing device.

10. The soil conditioner spreader according to claim 9, characterized in that, A second water level gauge is arranged in the water replenishing tank body, and the second water level gauge is signal-connected to the control system for monitoring the water level in the water replenishing tank body: When the water level is lower than the lower water level limit and the soil salt content detected by the vehicle-mounted conductivity meter is higher than the set threshold salt content, trigger the control system to issue a water replenishing alarm prompt.

11. A control method for a soil conditioner spreader, characterized in that, The control method includes the following steps: Step S1: Configure or add a modified medicament solution with a set concentration in the mixing and dosing device; Step S2: Preset initial parameters, specifically including: Given an initial driving speed V0, measure the initial soil salt content W0 through the vehicle-mounted conductivity meter; Determine the initial dosing amount Q10 according to the concentration of the modified medicament solution and the initial driving speed V0; Step S3: Start the tractor, the rotary tillage device performs rotary tillage, and the medicament nozzle of the mixing and dosing device sprays the modified medicament solution above the tillage; At the same time, the speed sensor monitors the real-time driving speed V, and the vehicle-mounted conductivity meter monitors the real-time soil salt content W; the control system adjusts the current dosing amount Q11 in real time according to the real-time driving speed V and the real-time soil salt content W; among them, in the said step S3, the control system adjusts the current dosing amount Q11 in real time according to the real-time driving speed V and the real-time soil salt content W, and the adjustment formula is:

12. The method for controlling a soil conditioner spreader according to claim 11, characterized in that, After the said step S3, the following steps are further included: Step S4: During the whole driving process, the mixing and dosing device uses the built-in first water level gauge to monitor the liquid level of the modified medicament solution in the mixing and dosing device in real time; When the first water level gauge detects that the liquid level of the modified medicament solution is lower than the lower limit of the medicament liquid level, trigger the control system to issue a medicament replenishing alarm prompt.

13. A control method for a soil conditioner spreader, characterized in that, The control method includes: Step S1: Configure or add a modified medicament solution with a set concentration in the mixing and dosing device, and fill the water replenishing tank body of the water replenishing device with water; Step S2: Preset initial parameters, specifically including: Given an initial driving speed V0, measure the initial soil salt content W0 through the vehicle-mounted conductivity meter; Determine the initial dosing amount Q10 according to the concentration of the modified medicament solution and the initial driving speed V0; Determine the soil salt content W1 that triggers the water replenishing device to replenish water according to the soil condition of the area to be improved and the concentration of the modified medicament solution; Determine the initial water replenishing amount Q20 according to the concentration of the modified medicament solution, the initial driving speed V0, and the set threshold salt content W1 for triggering the water replenishing device to replenish water; Step S3: Start the tractor, the rotary tillage device performs rotary tillage, and the medicament nozzle of the mixing and dosing device sprays the modified medicament solution above the tillage; Meanwhile, the speed sensor monitors the real-time driving speed V, and the on-vehicle conductivity meter monitors the real-time soil salt content W; the control system adjusts the current dosing amount Q11 and the current water replenishment amount Q22 in real time according to the real-time driving speed V and the real-time soil salt content W. Among them, in step S3, the control system adjusts the current dosing amount Q11 and the current water replenishment amount Q22 in real time according to the real-time driving speed V and the real-time soil salt content W, and the adjustment formula is as follows:

14. The method for controlling a soil conditioner spreader according to claim 13, wherein, After the step S3, the following steps are further included: Step S4: During the whole driving process, the mixed dosing device monitors the liquid level of the improved medicament liquid in the mixed dosing device in real time through the built-in first water level gauge: when the first water level gauge detects that the liquid level of the improved medicament liquid is lower than the lower limit of the medicament liquid level, it triggers the control system to issue a medicament replenishment alarm prompt to prompt the operator to replenish the improved medicament liquid in time; Meanwhile, the water replenishing device monitors the water level of the water replenishing device in real time through the built-in second water level gauge: when the second water level gauge detects that the water level of the water replenishing device is lower than the lower limit of the water level and the real-time soil salt content W detected by the on-vehicle conductivity meter is higher than the set threshold salt content W1, it triggers the control system to issue a water replenishment alarm prompt to prompt the operator to replenish water to the water replenishing device in time.

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