A subsoil depth and position setting chemical distributor

Abstract

The present application relates to the technical field of vegetable seedling planting equipment, in particular to a soil surface lower layer depth and point spraying machine. The present application comprises a ridger body and a mounting seat located at the front end of the ridger body, a floating assembly is hinged on the mounting seat, and a ditching assembly is arranged at the end of the floating assembly away from the mounting seat. The present application floats and follows the real-time ridge surface as the reference, the spraying depth is not affected by the road surface undulation, and the vertical distance between the pesticide and the root system is constant; the self-adaptive concave-convex ridge surface floating assembly freely swings up and down without manual adjustment, and adapts to various irregular ridge bodies such as collapse and protrusion, so that the integrated efficient operation of ridging, ditching, spraying and covering four processes is completed at one time, and the field operation efficiency is greatly improved; the depth-adjustable screw rod mechanically adjusts accurately, adapts to different vegetable seedlings and different growth period root system depths, and has strong versatility.

Description

Technical Field

[0001] This invention relates to the field of vegetable seedling planting equipment technology, specifically a soil surface spraying machine with fixed depth and fixed point application. Background Technology

[0002] Before planting seedlings, ridging is necessary to create alternating ridges and furrows in the soil. Seedlings are then planted at equal intervals along the center line of the ridges. After the seedlings have established roots and begun to grow, fertilization or pesticide application is required based on the approximate extent of their root growth (which can be calculated from the growth cycle). To minimize pesticide waste, the industry commonly employs a fixed-point application method, where pesticide application points are placed along the ridges at fixed intervals, and the lateral and vertical distances between application points B and the seedling roots are strictly controlled to meet application standards.

[0003] During the growth of vegetable seedlings, the ridges themselves develop a certain degree of support. However, these ridges are prone to irregular unevenness due to factors such as localized collapse and trampling, resulting in irregular changes in the height trajectory of the ridge surface. Therefore, regular repair and maintenance of the ridges are necessary. To achieve simultaneous ridge preparation and pesticide application, current technologies often involve simply combining and fixing the ridging machine and the pesticide spreader together, applying pesticides to the soil layer beneath the ridge while simultaneously preparing the ridges. Because the pesticide spreader and ridging machine are simply combined and fixed together, this method is more suitable for use on flat ridge surfaces. When encountering uneven road surfaces, it can lead to inconsistent pesticide application depth.

[0004] The existing technology has obvious defects: taking a fixed point A on the ridging machine as a reference, the relative position of the landing point (application point B) of the sprayer and point A remains unchanged; however, due to the unevenness of the upper surface of the ridge, the vertical distance from the highest point M of the ridge to the application point B at different locations will change with the height of the ridge, which will eventually cause the vertical distance between the application point B and the root system of the seedlings to deviate from the preset value, making it impossible to guarantee the consistency of the application depth and making it difficult to meet the process requirements of fixed-depth application. Summary of the Invention

[0005] The purpose of this invention is to provide a soil surface spraying machine with fixed depth and fixed point application to solve the problems mentioned in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a soil surface layer fixed-depth fixed-point spraying machine, including a ridging machine body, used for ridging and ridge trimming before and after planting seedlings, so that the soil forms alternating ridges and furrows, and further including: The mounting base is located at the front end of the ridge threshing machine body; The floating component is mounted on the mounting base at one end and extends and deflects to the side of the ridge machine body to be sprayed with pesticide at the other end. It rotates up and down around the mounting point within a preset range. The ridge machine body provides the power to propel it forward on the ridge surface. As it moves forward, it descends or rises according to the uneven trajectory of the ridge surface. The trenching component is vertically installed at the end of the floating component away from the mounting base; its bottom extends to the bottom of the floating component, and the distance between the lowest points of the two is fixed during use; during use, it is inserted into the ridge body at a fixed depth from the side of the ridge body close to the ridge machine body, and the floating component drives it to open a trench on the ridge body, while it descends or rises synchronously with the floating component. The spraying head is located on the furrowing assembly near the main body of the ridge opener. The pesticide enters from the inlet of the spraying head, and the outlet of the spraying head extends to the bottom of the furrowing assembly to spray the pesticide into the spraying furrow.

[0007] Furthermore, the floating assembly includes a front frame, a guide rail frame, a telescopic component, a rotating shaft, and a connecting rod. One end of the front frame is mounted on the mounting base, and the other end is fitted with the trenching assembly. The guide rail frame is located on the front frame, and the guide rail frame has an arc-shaped through hole; The drive end of the telescopic component is provided with a connecting rod perpendicular to it. The connecting rod slides in the arc-shaped through hole. The other end of the telescopic component is fixed on the rotating shaft. The rotating shaft is rotatably mounted on the top of the mounting base and is used to adjust the height of the trenching component to enter and exit the ridge. The center of the arc-shaped through hole coincides with the rotation center a of the front frame, which is used to leave space for the front frame to float up and down during the spraying process.

[0008] Furthermore, the trenching assembly includes a cutter holder, a support block, a soil covering component, a vertical blade, and several of the traveling components. The support block is located at the end of the front frame away from the mounting base 2. The cutter holder is vertically mounted on the support block. The vertical blade is vertically mounted on the cutter holder. The spraying head is located on the vertical blade. The soil covering component is disposed at the bottom end of the support block and is located between the spraying head and the ridge opener body, and is used to close the spraying furrow on which the pesticide is sprayed. The walking components are arranged on both sides of the bottom end of the support block. One side of the walking component is located in front of the vertical blade, and the other side of the walking component is located behind the spraying head. The two walking components are arranged opposite to each other to support the support base and move on the ridge surface. The bottom of the vertical blade is located below the traveling component.

[0009] Furthermore, the soil covering component includes two uprights and a soil covering wheel. The two uprights are arranged opposite each other, and the soil covering wheel is located at the bottom of the uprights. The two soil covering wheels are arranged in a figure-eight pattern. In the forward direction of the ridge machine body, the distance between the two soil covering wheels gradually increases, and the longitudinal axis of the vertical blade corresponds to the center of the gap between the two soil covering wheels.

[0010] Furthermore, the walking component includes a bracket and walking wheels, with the top of the bracket fixed to a support block and the walking wheels installed at the bottom of the bracket.

[0011] Furthermore, two mounting bases are arranged side by side in a horizontal direction; the floating components on the two mounting bases extend to both sides of the ridge-opening machine body and do not interfere with each other, for simultaneously applying pesticide to the ridges on both sides of the furrow.

[0012] Furthermore, the floating components on the two mounting bases are V-shaped.

[0013] Furthermore, the top of the support base is provided with an internal threaded hole, and a screw is internally threaded into the internal threaded hole; a rotating block is rotatably provided on the top of the tool holder, and the screw extends downward into the tool holder, and the two are rotatably connected; the bottom end of the screw is fixedly connected to the rotating block, which is used to adjust the distance between the lowest point of the vertical blade and the lowest point of the floating component.

[0014] Furthermore, a medicine storage box is provided at the top of the ridge-opening machine body, and a feeding component is provided on the ridge-opening machine body, which corresponds one-to-one with the spraying head, for conveying the medicine in the medicine storage box to the spraying head on the corresponding side.

[0015] Furthermore, the feeding component includes a feeding box, a feeding frame, a blower, and a conveying pipe. The bottom of the medicine storage box has a discharge port. The feeding box is located on the outside of the medicine storage box on the body of the ridging machine. The feeding frame is concentrically and rotatably assembled in the feeding box. The feeding frame divides the inside of the feeding box into several feeding chambers along the radial direction of the feeding box. The top side wall of the dispensing box is provided with a feeding port. When any of the feeding chambers is rotated to be aligned with the feeding port, the feeding port and the discharge port are connected, and the medicine in the medicine storage box falls into the feeding chamber through the discharge port. The bottom of the material distribution box is provided with a second discharge port and an air inlet on both sides respectively. The blower is mounted on the rear end of the ridging machine body, and the air outlet of the blower is fixedly connected to the air inlet. The second discharge port of the material distribution box is connected to the spraying head through the conveying pipe. When any of the feeding chambers are aligned with the discharge port 2, the blower inputs airflow through the air inlet, and the airflow carries the medicine in the feeding chamber into the conveying pipe through the discharge port 2, and finally the medicine is sprayed by the spraying head. The material distribution frame includes a hollow central cylinder at its center, which extends to the outside of the material distribution box and is used to obtain rotational power from the main body of the ridge opener.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention uses the real-time ridge surface as a reference for floating and following, so the application depth is not affected by road surface undulations, and the vertical distance between the pesticide and the root system remains constant. The adaptive floating component for uneven ridge surfaces swings freely up and down without manual adjustment, adapting to various irregular ridges such as collapsed and raised ones. This allows for integrated and efficient operation, completing the four processes of ridge opening and repair, ditching, pesticide application, and soil covering in one go, greatly improving field operation efficiency. The depth-adjustable screw mechanical precision adjustment adapts to different seedlings and root depths at different growth stages, making it highly versatile. Attached Figure Description

[0017] Figure 1 This is a side view of the invention; Figure 2 This is a schematic diagram of the front structure of the present invention; Figure 3 This is a side view of the structure of the present invention; Figure 4 This is a schematic diagram of the assembly of the floating component and the trenching component in this invention; Figure 5 This is a bottom view of the trenching component in this invention; Figure 6 This is a plan view of the medicine storage box in this invention; Figure 7 This is a schematic diagram of the internal structure of the material distribution box in this invention; Figure 8 This is a cross-sectional view of the trenching component in this invention; In the diagram: 1. Main body of the ridge opener; 2. Mounting base; 3. Floating component; 4. Trenching component; 5. Spreading head; 6. Internal threaded hole; 7. Screw; 8. Rotating block; 10. Medicine storage box; 11. Discharge port one; 12. Distribution box; 13. Distribution frame; 14. Feeding chamber; 15. Inlet; 16. Discharge port two; 17. Air inlet; 18. Blower; 19. Conveying pipe; 131. Central cylinder; 30. Front frame; 31. Guide rail frame; 32. Telescopic component; 33. Rotary shaft; 34. Connecting rod; 35. Arc-shaped through hole; 40. Cutterhead; 41. Support block; 42. Soil covering component; 43. Vertical cutter; 44. Traveling component; 420. Vertical pole; 421. Soil covering wheel; 440. Support frame; 441. Traveling wheel. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] See Figures 1-8 This invention provides a technical solution: a soil surface layer fixed-depth fixed-point spraying machine, comprising a ridge-opening machine body 1, used for opening and repairing ridges before and after planting rice seedlings, so that the soil forms alternating ridges and furrows, and further comprising: Mounting base 2 is located at the front end of the ridge opener body 1; The floating component 3 is mounted on the mounting base 2 at one end and extends and deflects to the side of the ridge machine body 1 where the pesticide is to be applied. It rotates up and down around the mounting point within a preset range. The ridge machine body 1 serves as the power source to propel it forward on the ridge surface. As it moves forward, it descends or rises along the uneven path of the ridge surface. The trenching component 4 is vertically installed at the end of the floating component 3 away from the mounting base 2; its bottom extends to the bottom of the floating component 3, and the distance between the lowest points of the two is fixed during use; during use, it is inserted into the ridge body at a fixed depth from the side of the ridge body close to the ridge machine body 1, and the floating component 3 drives it to open a trench on the ridge body, while it descends or rises synchronously with the floating component 3. The spraying head 5 is located on the furrowing assembly 4 near the ridge-opening machine body 1. The pesticide enters from the inlet of the spraying head 5, and the outlet of the spraying head 5 extends to the bottom of the furrowing assembly 4 to spray the pesticide into the spraying furrow.

[0020] It should be noted that the tractor head of the ridge opener body 1 itself serves as the power source, used to drive the ridge opener body 1 forward, and also to provide power to other components such as the floating component 3. This part is existing technology and will not be described in detail, nor is it shown in the figure.

[0021] In one embodiment, the floating component 3 includes a front frame 30, a guide rail frame 31, a telescopic component 32, a rotating shaft 33, and a connecting rod 34. One end of the front frame 30 is rotatably mounted on the mounting base 2, and the other end is equipped with the trenching component 4. The guide rail frame 31 is located on the front frame 30, and the guide rail frame 31 has an arc-shaped through hole 35. The drive end of the telescopic component 32 is provided with a connecting rod 34 perpendicular to it. The connecting rod 34 is slidably disposed in the arc-shaped through hole 35. The other end of the telescopic component 32 is fixed on the rotating shaft 33. The rotating shaft 33 is rotatably disposed on the top of the mounting base 2 and is used to adjust the height of the trenching component 4 to enter and exit the ridge. The center of the arc-shaped through hole 35 coincides with the rotation center a of the front frame 30, which is used to leave space for the front frame 30 to float up and down during the spraying process.

[0022] With this design, the arc-shaped through hole 35 provides vertical floating space for the front frame 30 without affecting the positioning support of the telescopic component 32; the extension / retraction of the telescopic component 32 can drive the front frame 30 to rotate around the center a, realizing the overall lifting / lowering of the trenching component 4, which is convenient for soil entry and exit. During operation, the telescopic component 32 remains stationary, while the front frame 30 can float freely within the arc-shaped through hole 35 along with the ridge surface, thus achieving adaptive ridge height.

[0023] In one embodiment, the trenching assembly 4 includes a cutter holder 40, a support block 41, a soil covering component 42, a vertical cutter 43, and a plurality of the traveling components 44. The support block 41 is located at the end of the front frame 30 away from the seat. The cutter holder 40 is vertically mounted on the support block 41. The vertical cutter 43 is vertically mounted on the cutter holder 40. The spraying head 5 is located on the vertical cutter 43. The soil covering component 42 is disposed at the bottom end of the support block 41 and is located between the spraying head 5 and the ridge opener body 1, and is used to close the spraying furrow on which the pesticide is sprayed. The walking component 44 is arranged on both sides of the bottom end of the support block 41. One side of the walking component 44 is located in front of the vertical blade 43, and the other side of the walking component 44 is located behind the spraying head 5. The two sides of the walking component 44 are arranged opposite to each other to support the support base and walk on the ridge surface. The bottom of the vertical blade 43 is located below the traveling member 44.

[0024] With this design, the support block 41 is fixed at the end of the front frame 30 away from the mounting base 2, providing an installation foundation for trenching, walking, and covering. The vertical blade 43 is vertically mounted on the blade holder 40, with its bottom lower than the walking wheel 441, and is used to cut vertical spraying furrows on the side of the ridge. The spray outlet extends to the bottom of the vertical blade 43, and the pesticide falls directly into the bottom of the furrow.

[0025] In one embodiment, the soil covering component 42 includes two uprights 420 and a soil covering wheel 421. The two uprights 420 are arranged opposite each other, and the soil covering wheel 421 is located at the bottom of the uprights 420. The two soil covering wheels 421 are arranged in a figure-eight pattern. In the forward direction of the ridging machine body 1, the distance between the two soil covering wheels 421 gradually increases. The longitudinal axis of the vertical blade 43 corresponds to the center of the gap between the two soil covering wheels 421.

[0026] With this design, during operation, the covering wheel 421 pushes the soil on the trench wall after the pesticide is applied towards the middle, automatically closing the application trench and completing the covering.

[0027] In one embodiment, the walking component 44 includes a bracket 440 and a walking wheel 441. The top of the bracket 440 is fixed to the support block 41, and the walking wheel 441 is installed at the bottom of the bracket 440.

[0028] This is the design. Figure 5 , Figure 8 The lowest point of the walking wheel 441 is the reference surface of the floating component 3, and it always rolls in contact with the upper surface of the ridge.

[0029] In one embodiment, two mounting bases 2 are arranged side by side in a horizontal direction; the floating components 3 on the two mounting bases 2 extend to both sides of the ridge machine body 1 respectively and do not interfere with each other, for simultaneously spraying pesticides on the ridges on both sides of the furrow.

[0030] With this design, two sets of mounting bases 2 are arranged side by side in a horizontal direction, and the two sets of floating components 3 are arranged symmetrically in a V-shape, extending to the left and right sides of the ridge opener body 1 respectively, without interfering with each other; it can simultaneously perform ditching, pesticide application and soil covering operations on two ridges on both sides of the furrow, greatly improving the efficiency of operation.

[0031] In one embodiment, the floating components 3 on the two mounting bases 2 are V-shaped.

[0032] In one embodiment, the top of the support base is provided with an internally threaded hole 6, and a screw 7 is internally threadedly connected to the internally threaded hole 6; a rotating block 8 is rotatably provided on the top of the tool holder 40, and the screw 7 extends downward into the tool holder 40, and the two are rotatably connected; the bottom end of the screw 7 is fixedly connected to the rotating block 8, and is used to adjust the distance between the lowest point of the vertical blade 43 and the lowest point of the floating component 3.

[0033] This is the design. Figure 8 Rotating screw 7 can drive the blade holder 40 and the vertical blade 43 to rise and fall as a whole, precisely adjusting the distance between the lowest point of the vertical blade 43 and the lowest point of the traveling wheel 441, thus adjusting the spraying depth to suit the root depth of seedlings at different growth stages.

[0034] In one embodiment, a pesticide storage tank 10 is provided at the top of the ridge-opening machine body 1, and a feeding component is provided on the ridge-opening machine body 1, which corresponds one-to-one with the spraying head 5, for conveying the pesticide in the pesticide storage tank 10 to the spraying head 5 on the corresponding side.

[0035] In one embodiment, the feeding component includes a material distribution box 12, a material distribution frame 13, a blower 18, and a conveying pipe 19. The bottom of the medicine storage box 10 has a discharge port 11. The material distribution box 12 is located on the outer side of the medicine storage box 10 on the main body 1 of the ridging machine. The material distribution frame 13 is concentrically and rotatably assembled in the material distribution box 12. The material distribution frame 13 divides the interior of the material distribution box 12 into several feeding chambers 14 along the radial direction of the material distribution box 12. The top side wall of the dispensing box 12 is provided with a feeding port 15. When any of the feeding chambers 14 are rotated to be aligned with the feeding port 15, the feeding port 15 is connected to the discharge port 11, and the medicine in the medicine storage box 10 falls into the feeding chamber 14 through the discharge port 11. The bottom of the material distribution box 12 is provided with a second discharge port 16 and an air inlet 17 on both sides respectively. The blower 18 is assembled at the rear end of the ridge-opening machine body 1. The air outlet of the blower 18 is fixedly connected to the air inlet 17. The second discharge port 16 of the material distribution box 12 is connected to the spraying head 5 through the conveying pipe 19. When any of the feeding chambers 14 and the discharge port 2 16 are aligned, the blower 18 inputs airflow through the air inlet 17, and the airflow drives the medicine in the feeding chamber 14 to enter the conveying pipe 19 through the discharge port 2 16, and finally the medicine is applied by the medicine application head 5. The material distribution frame 13 includes a hollow central cylinder 131 at its center, which extends to the outside of the material distribution box 12 and is used to obtain rotational power from the ridge opener body 1.

[0036] It should be noted that the material distribution frame 13 has a hollow central cylinder 131 at its center, which extends to the outside of the material distribution box 12. It can be connected to a motor or driven to rotate by the power output of the ridge opener. This is existing technology and will not be described in detail here, nor is it shown in the figure. Rotary material distribution enables intermittent quantitative drug delivery. The discharge gap is controlled by the distance between two adjacent feeding chambers 14 and the rotation speed of the material distribution frame 13, achieving fixed-point drug delivery. Pneumatic conveying is unblocked and leaves no residue.

[0037] The telescopic component 32 is a cylinder.

[0038] When using: Step 1, Start-up preparation and depth preset: According to the root depth of the seedlings during their growth period, rotate screw 7 to adjust the vertical distance between the vertical blade 43 and the traveling wheel 441, and set the target spraying depth; retract telescopic component 32 to lift the front frame 30 and the ditching component 4 as a whole, so that the vertical blade 43 leaves the ground; the ridge machine body 1 travels to the starting position of the ridge in the field. Step 2, Soil insertion: Control the extension of the telescopic component 32, rotate the front frame 30 downward around the hinge point, and insert the vertical blade 43 into the soil layer on the side of the ridge; the walking wheel 441 falls down and fits tightly against the upper surface of the ridge, and retracts or extends the telescopic component 32 so that the telescopic component 32 drives the connecting rod 34 at its end to be located at the center of the arc-shaped through hole 35, leaving space for the front frame 30 to swing up and down later. Step 3, Forward Floating Adaptive: The main body 1 of the ridge opener moves forward, propelling the whole machine forward; the traveling wheels 441 roll along the ridge surface, automatically raising when encountering a protrusion and automatically lowering when encountering a depression; The floating component 3 swings up and down synchronously with the traveling wheel 441, always taking the real-time ridge surface as the reference; the vertical blade 43 and the spraying head 5 rise and fall synchronously with the floating component 3, and the soil penetration depth remains constant. Step 4, Integrated Trenching-Spreading-Covering: During trenching, the vertical blade 43 cuts the soil, creating a vertical spreading trench of constant depth on the side of the ridge; during spreading, the material distribution frame 13 rotates at a uniform speed, and the pesticide falls quantitatively into the feeding chamber 14, which is then pneumatically conveyed to the spreading head 5 and precisely spread into the bottom of the trench; during covering, the figure-eight covering wheel 421 advances and pushes the soil back from the trench wall, automatically closing the spreading trench and completely covering the pesticide; Step 5, Soil Removal and Reset: When working to the end of the ridge, activate the telescopic component 32, lift the front frame 30 and the ditching component 4, and the vertical blade 43 removes the soil; turn off the feeding component and the blower 18 to complete a single trip.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0040] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, "several" refers to two or more.

[0042] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A soil surface layer fixed-depth fixed-point spraying machine, comprising a ridge-opening machine body (1), used for opening and repairing ridges before and after planting rice seedlings, so that the soil forms alternating ridges and furrows, characterized in that, Also includes: Mounting base (2) is located at the front end of the ridge opener body (1); The floating component (3) is mounted on the mounting base (2) at one end and extends and deflects to the side of the ridge machine body (1) to be sprayed with pesticide at the other end. It rotates up and down around the mounting point within a preset range. The ridge machine body (1) serves as the power source to propel it forward on the ridge surface. As it moves forward, it descends or rises along the uneven path of the ridge surface. The trenching component (4) is vertically installed at one end of the floating component (3) away from the mounting base (2); its bottom extends to the bottom of the floating component (3), and the distance between the lowest points of the two is fixed during use; during use, it is inserted into the ridge body at a fixed depth from the side of the ridge body close to the ridge machine body (1) to be sprayed with pesticide, and is driven by the floating component (3) to open a spraying trench on the ridge body, and at the same time, it descends or rises synchronously with the floating component (3); The spraying head (5) is located on the furrowing assembly (4) near the ridge machine body (1). The pesticide enters from the inlet of the spraying head (5) and the outlet of the spraying head (5) extends to the bottom of the furrowing assembly (4) to spray the pesticide into the spraying furrow.

2. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 1, characterized in that, The floating component (3) includes a front frame (30), a guide rail frame (31), a telescopic component (32), a rotating shaft (33), and a connecting rod (34). One end of the front frame (30) is mounted on the mounting base (2), and the other end is equipped with the trenching component (4). The guide rail frame (31) is located on the front frame (30), and the guide rail frame (31) has an arc-shaped through hole (35). The drive end of the telescopic component (32) is provided with a connecting rod (34) perpendicular to it. The connecting rod (34) slides in the arc-shaped through hole (35). The other end of the telescopic component (32) is fixed on the rotating shaft (33). The rotating shaft (33) is rotatably mounted on the top of the mounting base (2) for adjusting the height of the trenching component (4) to enter and exit the ridge. The center of the arc-shaped through hole (35) coincides with the rotation center a of the front frame (30), which is used to leave space for the front frame (30) to float up and down during the spraying process.

3. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 2, characterized in that, The trenching assembly (4) includes a cutter holder (40), a support block (41), a soil covering component (42), a vertical cutter (43), and several traveling components (44). The support block (41) is located at the end of the front frame (30) away from the mounting base. The cutter holder (40) is vertically mounted on the support block (41). The vertical cutter (43) is vertically mounted on the cutter holder (40). The spraying head (5) is located on the vertical cutter (43). The soil covering component (42) is located at the bottom of the support block (41) and between the spraying head (5) and the ridge opener body (1), and is used to close the spraying furrow on which the pesticide is sprayed; The walking component (44) is arranged on both sides of the bottom end of the support block (41). One side of the walking component (44) is located in front of the vertical blade (43), and the other side of the walking component (44) is located behind the spraying head (5). The two sides of the walking component (44) are arranged opposite to each other to support the support seat and walk on the ridge. The bottom of the vertical blade (43) is located below the walking component (44).

4. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 3, characterized in that, The soil covering component (42) includes two uprights (420) and a soil covering wheel (421). The two uprights (420) are arranged opposite each other, and the soil covering wheel (421) is located at the bottom of the uprights (420). The two soil covering wheels (421) are arranged in a figure-eight pattern. In the forward direction of the ridge machine body (1), the distance between the two soil covering wheels (421) gradually increases. The longitudinal axis of the vertical blade (43) corresponds to the center of the gap between the two soil covering wheels (421).

5. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 3, characterized in that, The walking component (44) includes a bracket (440) and a walking wheel (441). The top of the bracket (440) is fixed on the support block (41), and the walking wheel (441) is installed at the bottom of the bracket (440).

6. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 3, characterized in that, There are two mounting bases (2) arranged side by side in the horizontal direction; the floating components (3) on the two mounting bases (2) extend to both sides of the ridge machine body (1) and do not interfere with each other, so as to spray pesticide on the ridge body on both sides of the furrow at the same time.

7. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 6, characterized in that, The floating components (3) on the two mounting bases (2) are V-shaped.

8. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 7, characterized in that, The support base (2) has an internal threaded hole (6) at its top, and a screw (7) is internally threaded into the internal threaded hole (6); a rotating block (8) is rotatably provided on the top of the tool holder (40), and the screw (7) extends downward into the tool holder (40), and the two are rotatably connected; the bottom end of the screw (7) is fixedly connected to the rotating block (8) to adjust the distance between the lowest point of the vertical blade (43) and the lowest point of the floating component (3).

9. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 3 or 6, characterized in that, The top of the ridge-opening machine body (1) is provided with a medicine storage box (10). The ridge-opening machine body (1) is provided with a feeding component, which corresponds one-to-one with the spraying head (5), and is used to transport the medicine in the medicine storage box (10) to the spraying head (5) on the corresponding side.

10. The soil surface subsurface fixed-depth fixed-point spraying machine according to claim 9, characterized in that, The feeding components include a feeding box (12), a feeding frame (13), a blower (18), and a conveying pipe (19). The bottom of the medicine storage box (10) has a discharge port (11). The feeding box (12) is located on the outside of the medicine storage box (10) on the main body (1) of the ridge opener. The feeding frame (13) is concentrically and rotatably assembled inside the feeding box (12). The feeding frame (13) divides the inside of the feeding box (12) into several feeding chambers (14) along the radial direction of the feeding box (12). The top side wall of the dispensing box (12) is provided with a feeding port (15). When any of the feeding chambers (14) are rotated to align with the feeding port (15), the feeding port (15) is connected to the discharge port (11), and the medicine in the medicine storage box (10) falls into the feeding chamber (14) through the discharge port (11). The bottom sides of the material distribution box (12) are respectively provided with a second discharge port (16) and an air inlet (17). The blower (18) is mounted on the rear end of the ridge-opening machine body (1). The air outlet of the blower (18) is fixedly connected to the air inlet (17). The second discharge port (16) of the material distribution box (12) is connected to the spraying head (5) through the conveying pipe (19). When any of the feeding chambers (14) are aligned with the discharge port 2 (16), the blower (18) inputs airflow through the air inlet (17), and the airflow drives the agent in the feeding chamber (14) to enter the conveying pipe (19) through the discharge port 2 (16), and finally the spraying head (5) completes the spraying; The material distribution frame (13) includes a hollow central cylinder (131) at its center, which extends to the outside of the material distribution box (12) and is used to obtain rotational power from the ridge opener body (1).

Images