High-ground-clearance plant protection machine

Abstract

The invention relates to the technical field of plant protection machinery, and discloses a high-ground-clearance plant protection machine which comprises an advancing machine and further comprises a collecting part installed at the front end of the advancing machine, and the collecting part can collect soil information in the advancing direction of the advancing machine and analyze soil fertility; the fertilizing part is mounted at the rear end of the advancing machine, the fertilizing part comprises a transverse frame which is mounted at the rear end of the advancing machine through a mounting bracket, a liquid spraying pipeline is arranged on the transverse frame, and a spray head is mounted on the liquid spraying pipeline; the fertilizing part further comprises a liquid mixing box capable of mixing water and fertilizer, and the mixed water solution is sprayed out from a spray head on the liquid spraying pipeline. According to the method, the fertilizer proportion in the corresponding fertilization interval is regulated and controlled according to the information data of the soil at the acquisition point, so that the effect of differentiated fertilization is achieved, the trapping of one-step fertilization is broken through, and the utilization rate of the fertilizer is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plant protection machinery, in particular to a high-ground clearance plant protection machinery. Background Art

[0002] High-ground clearance plant protection machinery is a type of agricultural machinery designed specifically for mid- and late-stage plant protection operations on crops. It has a high ground clearance, which can effectively avoid crushing and damage to crops while improving operational efficiency and safety. It specifically involves aspects such as crop planting, sowing and fertilization.

[0003] At present, when the existing high-ground clearance plant protection machinery is used for fertilization, fertilization can be applied through deep plowing, ground spreading and spraying.

[0004] For example, Chinese patent CN221615550U discloses a plant protection machine capable of increasing the fertilizer loading capacity. The plant protection machine can expand the fertilizer loading space of the storage box, thereby increasing the fertilizer loading capacity of the storage box and improving the plant protection efficiency of crops.

[0005] Another example is Chinese patent CN221615557U, which discloses an easily modified plant protection machine that can separately fertilize and spray pesticides on crops during the plant protection process of crops, thereby reducing the need to use different machines for fertilization and pesticide spraying, resulting in low plant protection efficiency.

[0006] The above-mentioned plant protection machines have all been improved in terms of fertilization efficiency. However, the current field reality of traditional agriculture is that, according to survey data, in the same plot of land, the soil fertility difference can be as high as 300%. The uniform amount of fertilizer will not only lead to fertilizer waste in some areas of the land, but also cause some areas of the land to be under-fertilized, resulting in low fertilizer utilization, and ultimately leading to uneven crop yields in different areas of the land. Summary of the invention

[0007] The object of the present invention is to provide a high ground clearance plant protection machine to solve at least one technical problem existing in the above-mentioned prior art.

[0008] To achieve the above object, the present invention provides the following technical solution: a high-ground clearance plant protection machine, including a traveling machine, and further comprising:

[0009] A collection unit installed at the front end of the traveling machine, and the collection unit can collect soil information in the traveling direction of the traveling machine and analyze the soil fertility;

[0010] A fertilizing unit installed at the rear end of the traveling machine, the fertilizing unit comprising a cross frame installed at the rear end of the traveling machine through a mounting bracket, a liquid spraying pipeline being provided on the cross frame, and a spray head being installed on the liquid spraying pipeline;

[0011] The fertilization unit also includes a liquid mixing box capable of mixing water and fertilizer, and the mixed aqueous solution is sprayed out from a spray head on the liquid spray pipeline;

[0012] The collecting unit adjusts the ratio of water and fertilizer in the mixing tank according to the soil fertility distribution.

[0013] Optionally, two liquid storage tanks for holding water and liquid fertilizer respectively are installed at the end position of the traveling machinery, and the mixing liquid tank is arranged above the liquid storage tank, the two liquid storage tanks and the mixing liquid tank are connected through a liquid inlet pipe, and the two liquid inlet pipes are provided with sub-solenoid valves, the mixing liquid tank is connected to the liquid spray pipeline through a liquid infusion pipe, and the liquid infusion pipe is provided with a main solenoid valve.

[0014] Optionally, the collecting part includes a fixed box fixed at the front end of the traveling machinery, a vertically arranged through hole is opened in the center of the fixed box, and a lifting rod and a lower tie rod are slidably installed in the through hole, the top of the lower tie rod is set as a section of empty pipe, and a long groove is opened on the outer wall of the empty pipe, the outer wall of the lifting rod inserted into the empty pipe is fixed with a sliding pin slidably installed in the long groove, a soil sensor is installed at the bottom end of the lower tie rod, and the probe of the soil sensor is set vertically downward, and the top of the lifting rod is connected to the telescopic end of the hydraulic cylinder installed on the top of the traveling machinery.

[0015] Optionally, a slide plate is slidably mounted on the outer wall of the lower tie rod located below the fixed box, fixing needles are fixed to the bottom of both sides of the slide plate, and the bottom tip of the fixing needle is lower than the probe tip of the soil sensor. The outer wall of the lower tie rod is also provided with a latching protrusion, and a latching slot for latching is provided in the through hole on the slide plate.

[0016] Optionally, both side walls of the fixed box are provided with side grooves, and swing arms are rotatably installed in the two side grooves, the rotation points of the swing arms and the side grooves are set as incomplete gears, the outer wall of the lifting rod is provided with tooth grooves that can mesh with the incomplete gears, and a rotatable cleaning brush is installed at the end of the swing arm, and when the two swing arms rotate close to each other, the cleaning brush can contact the probe on the soil sensor.

[0017] Optionally, a friction wheel and a transmission wheel that transmit mutual friction transmission are rotatably installed on the outer wall of the swing arm, and the transmission wheel is connected to the cleaning brush through a transmission belt, and when the two swing arms rotate close to each other, the friction wheel can contact the outer wall of the lifting rod.

[0018] Optionally, the diameter of the friction wheel is greater than the diameter of the transmission wheel.

[0019] Optionally, the thickness of the friction wheel is greater than the thickness of the incomplete gear, and the arc-shaped edge of the friction wheel is provided as an elastic layer.

[0020] Optionally, the direction of the line between the corresponding positions of the two long grooves is designed to be perpendicular to the traveling direction of the traveling machine, and the two fixing pins on the slide plate are designed to be distributed along the traveling direction of the traveling machine.

[0021] Optionally, the mounting bracket is swung and adjusted by a driving unit on the traveling machine, and the mounting bracket can be telescopically adjusted along the length direction.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention analyzes the fertility of the soil after collecting soil information, and then adjusts the ratio of water and fertilizer in the mixing box according to the analysis results, so as to adjust the proportion of fertilization in different areas. In this way, the collection point can be used as the center, and fertilizer can be applied within a fixed length range around it, and the fertilizer ratio in the corresponding fertilization interval can be adjusted according to the soil information data from the collection point, so as to achieve the effect of differentiated fertilization, break the dilemma of one-size-fits-all fertilization, and improve the utilization rate of fertilizers.

[0024] 2. In the present invention, since the slide plate and the fixed pin provide stable support for the lower tie rod, when the lower tie rod moves downward, the long groove thereon and the sliding pin of the lifting rod will separate from the fixed box, and after separation, the hydraulic cylinder will drive the lifting rod to move upward a certain distance so that the sliding pin is located in the middle part of the long groove. The purpose is to provide a certain displacement space between the lifting rod and the lower tie rod. The fault tolerance between the sliding pin and the long groove can reduce the influence of vibration and offset on the soil sensor, thereby making the detection result more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the front end of the traveling machine of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the rear end of the traveling machine of the present invention;

[0027] Figure 3 For the present invention Figure 2 A in the enlarged view;

[0028] Figure 4 It is a front view of the present invention;

[0029] Figure 5 For the present invention Figure 4 A sectional stereoscopic view and a partial enlarged view of the middle edge BB;

[0030] Figure 6 For the present invention Figure 4 Cross-sectional view along CC;

[0031] Figure 7It is a schematic diagram of the state of the swing arm after rotation of the present invention;

[0032] Figure 8 It is an exploded stereogram of the lifting rod and the lower tie rod of the present invention;

[0033] Fig. 9 It is an enlarged stereoscopic view of the swing arm and the structure thereon of the present invention;

[0034] Fig.10 It is a simplified view of the fertilization interval and information collection points of the present invention.

[0035] In the figure: 1. Traveling machinery; 2. Collection unit; 3. Fertilization unit; 4. Mounting bracket; 5. Cross frame; 6. Spraying pipeline; 7. Liquid storage tank; 8. Liquid inlet pipe; 9. Sub-solenoid valve; 10. Main solenoid valve; 11. Mixing tank; 12. Fixed tank; 13. Lifting rod; 14. Swing arm; 15. Incomplete gear; 16. Friction wheel; 17. Transmission wheel; 18. Lower tie rod; 19. Long groove; 20. Sliding pin; 21. Soil sensor; 22. Slide plate; 23. Fixing needle; 24. Cleaning brush; 25. Boss. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0037] See also Figures 1 to 10 The present invention provides a technical solution: a high-ground-clearance plant protection machine, comprising a traveling machine 1, and further comprising:

[0038] A collecting unit 2 installed at the front end of the traveling machine 1, and the collecting unit 2 can collect soil information in the traveling direction of the traveling machine 1 and analyze the soil fertility;

[0039] A fertilizing unit 3 installed at the rear end of the traveling machine 1, the fertilizing unit 3 includes a cross frame 5 installed at the rear end of the traveling machine 1 through a mounting bracket 4, a liquid spraying pipeline 6 is provided on the cross frame 5, and a spray head is installed on the liquid spraying pipeline 6;

[0040] The fertilizing part 3 also includes a liquid mixing tank 11 that can mix water and fertilizer, and the mixed aqueous solution is sprayed out from the nozzle on the liquid spraying pipeline 6;

[0041] The collecting unit 2 adjusts the ratio of water and fertilizer in the mixing tank 11 according to the soil fertility distribution.

[0042] According to research data, the fertility of the soil in the same plot can vary by up to 300%. The uniform amount of fertilizer applied will not only lead to fertilizer waste in some areas of the plot, but also cause insufficient fertilizer in some areas, resulting in low fertilizer utilization, and ultimately lead to uneven crop yields in different areas of the plot. Therefore, it is very necessary to break the dilemma of one-size-fits-all fertilization.

[0043] In this case, when the high-clearance plant protection machine is in use, the traveling machine 1 mixes water and fertilizer through the mixing tank 11 of the fertilizing part 3 during the traveling process, and the mixed liquid is sprayed from the nozzle on the spraying pipeline 6 for fertilization;

[0044] At the same time, the collecting unit 2 also collects soil information in the traveling direction. Specifically, for example, a near-infrared spectrometer can be used for non-contact scanning, so as to detect the organic matter content of the soil and then analyze the soil fertility. A microwave humidity sensor can also be used. By integrating the microwave humidity sensor on the chassis of the traveling machine 1, the surface humidity and water content of the soil can be detected, and then the soil fertility can be inferred and analyzed.

[0045] After collecting soil information, the soil fertility is analyzed, and then the ratio of water and fertilizer in the mixing tank 11 is adjusted according to the analysis results, so as to adjust the ratio of fertilization in different areas. For details, please refer to Fig.10 , where L, L1, L2... represent fertilization intervals, and a1, a2, a3... represent collection points. In this way, fertilizer can be applied within a fixed-length range around the collection point as the center, and the fertilizer ratio in the corresponding fertilization interval can be adjusted according to the soil information data from the collection point, thereby achieving the effect of differentiated fertilization, breaking the dilemma of one-size-fits-all fertilization and improving the utilization rate of fertilizers.

[0046] In one of the more preferred embodiments, an implementation method of mixing liquids and an implementation method of controlling the ratio of water and fertilizer are provided;

[0047] Two liquid storage tanks 7 for containing water and liquid fertilizer respectively are installed at the end position of the traveling machine 1, and a mixing liquid tank 11 is arranged above the liquid storage tank 7. The two liquid storage tanks 7 are connected to the mixing liquid tank 11 through a liquid inlet pipe 8, and the two liquid inlet pipes 8 are provided with a sub-solenoid valve 9. The mixing liquid tank 11 is connected to the spray pipeline 6 through a liquid infusion pipe, and a main solenoid valve 10 is provided on the liquid infusion pipe.

[0048] For details, please refer to Figure 2 and Figure 3During mixing, the water and liquid fertilizer in the liquid storage tank 7 are introduced into the mixing tank 11 through the liquid inlet pipe 8 for mixing. Specifically, they can be transported by a micro water pump or the like. Then, after being mixed in the mixing tank 11, they are transported to the spraying pipeline 6 through the liquid infusion pipe and sprayed out through the nozzle for fertilization. Specifically, the micro water pump can also be used for transportation;

[0049] Among them, in the above-mentioned fertilization interval, the total amount entering the liquid storage tank 7 through the liquid inlet pipe 8 is certain, so the mixing and dilution ratio of water and liquid fertilizer can be controlled by adjusting the sub-solenoid valves 9 on the two liquid inlet pipes 8, thereby achieving the effect of adjusting the fertilization ratio;

[0050] After mixing, the main electromagnetic valve 10 is opened, and the mixed solution is transported to the spray pipeline 6 through the infusion tube to complete the subsequent spraying and fertilizing process.

[0051] In one of the more preferred embodiments, a method for collecting soil information is provided;

[0052] The collecting part 2 includes a fixed box 12 fixed at the front end of the traveling machine 1, a vertical through hole is opened in the center of the fixed box 12, and a lifting rod 13 and a lower tie rod 18 are slidably installed in the through hole, the top of the lower tie rod 18 is set as a section of empty pipe, and a long groove 19 is opened on the outer wall of the empty pipe, the lifting rod 13 is inserted into the outer wall of the empty pipe and a sliding pin 20 slidably installed in the long groove 19 is fixed, a soil sensor 21 is installed at the bottom end of the lower tie rod 18, and the probe of the soil sensor 21 is set vertically downward, and the top of the lifting rod 13 is connected to the telescopic end of the hydraulic cylinder installed on the top of the traveling machine 1.

[0053] For details, please refer to Figure 5 and Figure 6 In this embodiment, an electrochemical sensor detection method is provided, which adopts a contact detection method, which can further improve the detection accuracy and thus reduce the error of fertilization between different areas. The specific method is as follows:

[0054] When the traveling machine 1 is moving, the main electromagnetic valve 10 is in an open state, and at this time, it is in the process of fertilization. Fig.10 The fertilization stops at point a in the middle, and the main electromagnetic valve 10 is also closed to stop fertilizing. At this time, the telescopic end of the hydraulic cylinder on the top of the traveling machine 1 extends downward, thereby driving the lifting rod 13, the lower rod 18 and the soil sensor 21 to move downward until the probe of the soil sensor 21 is vertically inserted into the soil, thereby detecting the components in the soil;

[0055] For example, the soil sensor 21 can use a temperature and humidity sensor to monitor the temperature and humidity in the soil, a soil pH sensor to detect the acidity and alkalinity of the soil, and a soil conductivity sensor to detect the salt content in the soil, and then the concentration of nitrogen and potassium ions can be inferred. In summary, the soil fertility can be inferred through the above-mentioned methods, and the contact detection method has higher accuracy. It can also be used in combination with the above-mentioned non-contact detection method. By reasonably selecting the combination of detection parameters and technologies, a comprehensive analysis of multiple key indicators can be performed to analyze the fertility of the soil in the area, thereby more accurately adjusting the proportion of fertilization and improving fertilization efficiency.

[0056] Moreover, it is worth noting that in this embodiment, when the lifting rod 13 moves downward, the sliding pin 20 will push against the bottom of the long groove 19 to drive the lower tie rod 18 to move downward, and the long groove 19 and the sliding pin 20 do not separate from the through hole in the fixed box 12 during the downward movement of the lower tie rod 18. Therefore, the lifting rod 13 and the lower tie rod 18 can be regarded as a complete coaxial rod to ensure that the probe of the soil sensor 21 can be vertically inserted into the soil, thereby improving the accuracy of the detection result.

[0057] During this detection process, the soil can also be loosened in advance, which not only facilitates the insertion of the soil sensor 21 probe, but also makes it easier for the mixed solution to infiltrate the soil during fertilization.

[0058] In one of the more preferred embodiments, an implementation method is provided that can further improve the stability of the soil sensor 21 when inserted into the soil;

[0059] A slide plate 22 is slidably mounted on the outer wall of the lower tie rod 18 located below the fixed box 12. Fixing pins 23 are fixed to the bottom of both sides of the slide plate 22, and the bottom tip of the fixing pin 23 is lower than the probe tip of the soil sensor 21. A latching protrusion 25 is also provided on the outer wall of the lower tie rod 18, and a latching groove for latching is provided in the through hole on the slide plate 22.

[0060] For details, please refer to Figure 8 When the lower tie rod 18 moves downward, due to the mutual engagement between the locking protrusion 25 and the slot in the slide plate 22, the slide plate 22 will move downward with it, and the fixing needle 23 will be inserted into the soil before the soil sensor 21, until the resistance of the soil is greater than the engagement force between the locking protrusion 25 and the slot, the lower tie rod 18 drives the soil sensor 21 to move downward. In this way, the first fixation of the slide plate 22 by the fixing needle 23 can provide a relatively stable restriction for the downward movement of the lower tie rod 18, so that the probe of the soil sensor 21 can be vertically inserted into the soil, thereby improving its stability and preventing the probe of the soil sensor 21 from bending due to offset and affecting the detection result.

[0061] Moreover, in this embodiment, due to the stable support provided by the slide plate 22 and the fixing pin 23 to the lower tie rod 18, when the lower tie rod 18 moves downward, the long slot 19 thereon and the sliding pin 20 of the lifting rod 13 will be separated from the fixing box 12, and after separation, the hydraulic cylinder will drive the lifting rod 13 to move upward a certain distance so that the sliding pin 20 is located in the middle part of the long slot 19, the purpose of which is to provide a certain displacement space between the lifting rod 13 and the lower tie rod 18, because after the probe of the soil sensor 21 is inserted into the soil, the fixing box 12 may transmit it to the soil sensor 21 through the lower tie rod 18 under the vibration of the traveling machine 1 itself, thereby affecting its detection result, and displacement deviation in the traveling direction may also occur;

[0062] Therefore, after the soil sensor 21 is inserted into the soil, the tolerance between the sliding pin 20 and the long groove 19 can reduce the influence of vibration and offset on the soil sensor 21, thereby making the detection result more accurate;

[0063] Moreover, shock-absorbing cotton can be added to the outer wall of the sliding pin 20 or the inner wall of the long groove 19 to further eliminate the influence of vibration on the soil sensor 21.

[0064] In one of the more preferred embodiments, a method for cleaning the probe is provided to improve the accuracy of multiple detection results and avoid excessive influence between them.

[0065] Side grooves are provided on both side walls of the fixed box 12, and swing arms 14 are rotatably installed in the two side grooves. The rotation point between the swing arm 14 and the side groove is set as an incomplete gear 15. The outer wall of the lifting rod 13 is provided with a tooth groove that can mesh with the incomplete gear 15. A rotatable cleaning brush 24 is installed at the end of the swing arm 14, and when the two swing arms 14 rotate close to each other, the cleaning brush 24 can contact the probe on the soil sensor 21.

[0066] See also Figure 6 and Figure 7 When the lifting rod 13 moves downward, the tooth groove on it drives the incomplete gear 15 to rotate, so that the two swing arms 14 rotate to both sides. Figure 7 In the state shown, the cleaning brush 24 on it can be kept away from the ground to avoid excessive sticking to the soil, and when the tooth groove moves to the bottom of the incomplete gear 15, the lifting rod 13 can also keep the swing arm 14 in the open state through the incomplete gear;

[0067] On the contrary, when the lifting rod 13 moves upward, the swing arms 14 will rotate closer to each other, and the cleaning brush 24 will contact the probe. Then, driven by the external structure, the cleaning brush 24 will rotate to clean the soil adhered to the surface of the probe, preparing for subsequent detection, while also reducing the impact on subsequent detection results.

[0068] In one of the more preferred embodiments, an implementation method capable of controlling the rotation of the cleaning brush 24 is provided;

[0069] The outer wall of the swing arm 14 is rotatably mounted with a friction wheel 16 and a transmission wheel 17 that transmit frictional transmission to each other. The transmission wheel 17 is connected to the cleaning brush 24 through a transmission belt. When the two swing arms 14 rotate close to each other, the friction wheel 16 can contact the outer wall of the lifting rod 13.

[0070] The diameter of the friction wheel 16 is greater than the diameter of the transmission wheel 17 .

[0071] For details, please refer to Figure 6 and Fig. 9 As can be seen from the above content, when the lifting rod 13 moves upward, the swing arms 14 will rotate closer to each other, and at the same time, the friction wheel 16 will contact the outer wall of the lifting rod 13, and then as the lifting rod 13 continues to move upward, the friction wheel 16 will rotate and drive the transmission wheel 17 to rotate, and then drive the cleaning brush 24 to rotate and clean through the transmission belt;

[0072] The design of the friction wheel 16 and the transmission wheel 17 can not only increase the transmission ratio, but also change the rotation direction of the cleaning brush 24 so that it can clean the probe from top to bottom, further improving the cleaning effect.

[0073] In one of the more preferred embodiments, the thickness of the friction wheel 16 is greater than the thickness of the incomplete gear 15, and the arc edge of the friction wheel 16 is set as an elastic layer. The elastic layer design of the friction wheel 16 can further increase the friction between it and the lifting rod 13 to ensure the cleaning effect of the cleaning brush 24.

[0074] In one of the more preferred embodiments, the direction of the line between the corresponding positions of the two long grooves 19 is designed to be perpendicular to the traveling direction of the traveling machine 1, and the two fixing pins 23 on the slide plate 22 are designed to be distributed along the traveling direction of the traveling machine 1.

[0075] See also Figure 1 By designing the distribution of the fixing pins 23 , the stability of the slide plate 22 can be further improved.

[0076] In one of the more preferred embodiments, the mounting bracket 4 is swung and adjusted by a driving unit on the traveling machine 1, and the mounting bracket 4 can be telescopically adjusted along the length direction.

[0077] The angle of the mounting bracket 4 can be adjusted by means of a motor or a cylinder, so that the height of the spraying fertilization can be adjusted, and the telescopic adjustment of the mounting bracket 4 can further increase the spraying range, that is, Fig.10 The length of the fertilization interval shown in L.

[0078] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-ground clearance plant protection machine, comprising a traveling machine (1), characterized in that: Also includes: A collecting unit (2) installed at the front end of the traveling machine (1), and the collecting unit (2) can collect soil information in the traveling direction of the traveling machine (1) and analyze the soil fertility; A fertilizing unit (3) installed at the rear end of a traveling machine (1), the fertilizing unit (3) comprising a cross frame (5) installed at the rear end of the traveling machine (1) via a mounting bracket (4), a liquid spraying pipeline (6) being provided on the cross frame (5), and a spray head being installed on the liquid spraying pipeline (6); The fertilizing section (3) further comprises a liquid mixing box (11) capable of mixing water and fertilizer, and the mixed aqueous solution is sprayed out from a spray head on the liquid spraying pipeline (6); The collecting unit (2) adjusts the ratio of water and fertilizer in the mixing tank (11) according to the soil fertility distribution.

2. The high-ground clearance plant protection machine according to claim 1, characterized in that: Two liquid storage tanks (7) for containing water and liquid fertilizer are installed at the end of the traveling machine (1), and the liquid mixing tank (11) is arranged above the liquid storage tank (7). The two liquid storage tanks (7) are connected to the liquid mixing tank (11) through a liquid inlet pipe (8), and the two liquid inlet pipes (8) are provided with a sub-solenoid valve (9). The liquid mixing tank (11) is connected to the liquid spraying pipeline (6) through a liquid infusion pipe, and the liquid infusion pipe is provided with a main solenoid valve (10).

3. The high-ground clearance plant protection machine according to claim 1, characterized in that: The collecting part (2) comprises a fixed box (12) fixed at the front end of the traveling machine (1), a vertical through hole is provided at the center of the fixed box (12), and a lifting rod (13) and a lower tie rod (18) are slidably installed in the through hole, the top end of the lower tie rod (18) is set as a section of empty pipe, and a long groove (19) is provided on the outer wall of the empty pipe, and a sliding pin (20) slidably installed in the long groove (19) is fixed on the outer wall of the empty pipe inserted into the lifting rod (13), a soil sensor (21) is installed at the bottom end of the lower tie rod (18), and the probe of the soil sensor (21) is vertically downwardly arranged, and the top end of the lifting rod (13) is connected to the telescopic end of a hydraulic cylinder installed on the top of the traveling machine (1).

4. The high-ground clearance plant protection machine according to claim 3, characterized in that: A slide plate (22) is slidably mounted on the outer wall of a lower tie rod (18) located below the fixing box (12), fixing pins (23) are fixed to the bottoms of both sides of the slide plate (22), and the bottom tips of the fixing pins (23) are lower than the probe tips of the soil sensor (21), and a clamping protrusion (25) is also provided on the outer wall of the lower tie rod (18), and a clamping groove for clamping the clamping protrusion (25) is provided in the through hole on the slide plate (22).

5. The high-ground clearance plant protection machine according to claim 3, characterized in that: Side grooves are provided on both side walls of the fixed box (12), and swing arms (14) are rotatably installed in the two side grooves. An incomplete gear (15) is provided at the rotation point between the swing arm (14) and the side groove. A tooth groove that can mesh with the incomplete gear (15) is provided on the outer wall of the lifting rod (13). A rotatable cleaning brush (24) is installed at the end of the swing arm (14), and when the two swing arms (14) rotate close to each other, the cleaning brush (24) can contact the probe on the soil sensor (21).

6. The high-ground clearance plant protection machine according to claim 5, characterized in that: The outer wall of the swing arm (14) is rotatably mounted with a friction wheel (16) and a transmission wheel (17) which are frictionally driven with each other. The transmission wheel (17) is connected to the cleaning brush (24) through a transmission belt. When the two swing arms (14) rotate toward each other, the friction wheel (16) can contact the outer wall of the lifting rod (13).

7. The high-ground clearance plant protection machine according to claim 6, characterized in that: The diameter of the friction wheel (16) is greater than the diameter of the transmission wheel (17).

8. The high-ground clearance plant protection machine according to claim 6, characterized in that: The thickness of the friction wheel (16) is greater than the thickness of the incomplete gear (15), and the arc-shaped edge of the friction wheel (16) is provided as an elastic layer.

9. The high-ground clearance plant protection machine according to claim 4, characterized in that: The direction of the line between the corresponding positions of the two long grooves (19) is designed to be perpendicular to the travel direction of the traveling machine (1), and the two fixing pins (23) on the slide plate (22) are designed to be distributed along the travel direction of the traveling machine (1).

10. The high-ground clearance plant protection machine according to any one of claims 1 to 9, characterized in that: The mounting bracket (4) is swung and adjusted by a driving unit on the traveling machine (1), and the mounting bracket (4) can be telescopically adjusted along the length direction.

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