Fertilizing device capable of precisely fertilizing for agricultural cultivation

Abstract

The invention discloses a fertilizing device capable of precisely fertilizing for agricultural cultivation. The fertilizing device comprises a frame, a material storage box and a precise material control device. The storage box is arranged on the frame bearing table. The frame is provided with a bearing table, and the storage box is installed on the bearing table. The precise material control device is mainly composed of a quantitative cylinder, an adjusting plate, a telescopic conveying pipe, two on-off valves, a sensor and a control system. The quantifying cylinder is arranged on the bearing table, a fertilizer containing space is formed in the quantifying cylinder, and the adjusting plate can slide along the quantifying cylinder to adjust the size of the space. The telescopic conveying pipe is connected with the storage box and the adjusting plate to drive the storage box to move and convey fertilizer. The two on-off valves control opening and closing of the feeding port and the fertilizing port respectively, and the sensor monitors the material amount in the fertilizer containing space and is matched with the control system to achieve accurate adjustment of the fertilizing amount. In order to overcome the defects in the prior art, the fertilizing device capable of precisely fertilizing for agricultural cultivation, provided by the invention, can realize adjustable quantitative fertilizing and remarkably improve the precision level of fertilizing operation.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a fertilizer application device for precise fertilization in agricultural tillage. Background Technology

[0002] Fertilization is a crucial step in agricultural production, and the accuracy of fertilizer application directly affects crop growth, fertilizer utilization efficiency, and the degree of environmental pollution.

[0003] Currently, most common fertilizer application devices on the market, such as fertilizer spreaders and fertilizer applicators, employ mechanical or gravity-fed structures for fertilization, which generally suffer from the inability to precisely control the amount of fertilizer applied. Most traditional fertilizer application devices control the amount of fertilizer applied by manually adjusting the opening of the discharge port plate or changing the size of the discharge gears. This adjustment method relies on the operator's experience and is a discrete, coarse adjustment, unable to achieve precise micro-adjustments. During operation, due to mechanical vibration, fertilizer agglomeration, or density changes, the actual amount of fertilizer applied is prone to fluctuation, leading to uneven fertilization. Once the discharge mechanism of traditional fertilizer devices is set, it maintains a fixed output throughout the entire operation, unable to adjust the amount of fertilizer applied each time according to actual conditions. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a fertilizer application device for agricultural tillage that can accurately apply fertilizer, which can achieve adjustable quantitative fertilization and significantly improve the precision of fertilization operations.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A precision fertilization device for agricultural tillage includes: a frame, a storage bin, and a precision material control device;

[0007] The vehicle frame has a support platform;

[0008] The storage bin is installed on the support platform, and the storage bin is provided with a discharge port;

[0009] The precision material control device includes a metering cylinder, an adjusting plate, a conveying telescopic conveying pipe, an on / off valve, a sensor, and a control system;

[0010] The metering cylinder is installed on and supported by the support platform. The metering cylinder has a fertilizer holding space and is provided with an opening and a fertilizer inlet. The opening and the fertilizer inlet are respectively connected to the fertilizer holding space.

[0011] The adjusting plate is placed over the opening and surrounds the metering cylinder to form the fertilizer holding space; the adjusting plate is slidably connected to the metering cylinder.

[0012] One end of the telescopic conveying pipe is connected to the storage box, and the other end of the telescopic conveying pipe is driven to the adjusting plate, so as to drive the adjusting plate to move along the extension direction of the metering cylinder and adjust the size of the fertilizer holding space. The storage box, the telescopic conveying pipe and the fertilizer holding space are connected in sequence.

[0013] The on / off valve is provided in at least two parts, and the two on / off valves are respectively installed at the feed inlet and the fertilizer outlet of the telescopic conveying pipe;

[0014] The sensor is installed on the adjustment plate and located within the fertilizer container space. The sensor is used to detect the amount of fertilizer in the fertilizer container space.

[0015] The on / off valve and the sensor are electrically connected to the control system.

[0016] Furthermore, the fertilizer application port is connected to a uniform spraying device, which is used to spray fertilizer evenly onto the soil surface.

[0017] Furthermore, the storage box is provided with multiple discharge ports, which are distributed sequentially at intervals along the travel direction of the vehicle frame, and each discharge port is connected to a precision material control device, and the fertilizer application port in each precision material control device is connected to the uniform speed spraying device.

[0018] Furthermore, the adjusting plate is provided with a plurality of threaded grooves, which are distributed circumferentially around the adjusting plate, and each threaded groove is threadedly connected to a sensor.

[0019] Furthermore, a contact electrode is provided in the threaded groove, and the contact electrode is used to electrically connect the sensor.

[0020] Furthermore, the telescopic conveying tube includes a sleeve and an insert. The sleeve is provided with a limiting groove that extends along the length of the sleeve. The insert is provided with a slider, and the limiting groove and the slider are slidably engaged.

[0021] Furthermore, the sleeve is provided with a mounting plate, and the precision material control device also includes a threaded limiting rod. The mounting plate has a threaded hole, which is threadedly connected to the threaded limiting rod. The threaded limiting rod has a rotating part, and the adjusting plate has a rotating cavity, with the rotating part located inside the rotating cavity.

[0022] Furthermore, at least two of each of the threaded limiting rods, threaded holes, and rotary cavities are provided, and the two threaded limiting rods, the two threaded holes, and the two rotary cavities are respectively located on opposite horizontal sides of the central axis of the telescopic conveying pipe.

[0023] Furthermore, the agricultural tillage device for precise fertilization also includes a soil loosening mechanism. The soil loosening mechanism and the precise material control device are arranged sequentially in the opposite direction of the vehicle frame's movement. The soil loosening mechanism includes a plowing component and a telescopic rod. The plowing component is movably hinged to the vehicle frame via a hinge shaft. The telescopic rod is installed on the vehicle frame, and its output part is connected to the plowing component to drive the plowing component to rise and fall relative to the ground. The telescopic rod is electrically connected to the control system.

[0024] Furthermore, the telescopic rod is hinged to the vehicle frame via a hinge device, which includes a spherical hinge seat and a spherical hinge rod. The spherical hinge seat is installed on the vehicle frame, and the spherical hinge rod connects to and supports the telescopic rod. The spherical hinge seat and the spherical hinge rod are spherically hinged.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. Based on the design of the telescopic conveying pipe driving the adjusting plate and the metering cylinder to slide and adjust the fertilizer holding space, compared with the prior art, the present invention can directly change the fertilizer volume through the mechanical structure, realize the stepless adjustment and precise setting of the fertilizer amount, solve the problems of the prior art that quantitative adjustment depends on the replacement of parts, the large quantitative deviation caused by the coarse control of valves, and the cumbersome adjustment, realize adjustable quantitative fertilization from the structural level, and effectively improve the accuracy of fertilizer amount setting and the convenience of operation.

[0027] 2. Based on the electrical connection design of the aforementioned sensors, control system, and on / off valve, compared to existing technologies, this invention constructs an automated closed-loop fertilization process of "setting-detection-feedback-control." The sensors monitor the amount of fertilizer in the fertilizer container, and combined with the control system's precise start / stop control of the on / off valve, the entire process of loading, stopping, and discharging can be automatically controlled. This avoids loading errors caused by manual operation or timed control, ensuring a high degree of consistency in the amount of fertilizer applied each time, significantly improving the precision of fertilization operations, while reducing manual labor intensity and increasing operational efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a precision fertilization device for agricultural tillage according to the present invention.

[0029] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 for Figure 1Schematic diagram of the precision material control device;

[0032] Figure 5 A cross-sectional structural diagram of the precision material control device;

[0033] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0034] Figure 7 A schematic diagram of the cross-sectional structure of the precision material control device;

[0035] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0036] Figure 9 for Figure 4 A schematic diagram of the structure of the threaded limit rod.

[0037] In the diagram: 1. Chassis; 11. Support platform; 2. Storage bin; 21. Discharge port; 3. Precision material control device; 31. Telescopic conveyor pipe; 311. Sleeve; 3111. Mounting plate; 3112. Limiting groove; 3113. Threaded hole; 312. Insert tube; 3121. Adjusting plate; 31211. Sensor; 31212. Threaded groove; 31213. Contact electrode; 31214. Rotary cavity; 3123 32. Slider; 32. Metering cylinder; 321. Fertilizer holding space; 3211. Opening; 3212. Fertilizer inlet; 33. Control system; 34. On / off valve; 35. Lifting drive mechanism; 37. Threaded limit rod; 371. Rotating part; 4. Uniform speed spraying device; 5. Soil loosening mechanism; 51. Soil plowing component; 52. Telescopic rod; 6. Hinge shaft; 7. Hinge device; 71. Spherical hinge seat; 72. Spherical hinge rod. Detailed Implementation

[0038] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0039] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] See Figures 1-9 A preferred embodiment of the present invention provides a fertilizer application device for precise fertilization in agricultural tillage, comprising: a frame 1, a storage box 2, and a precision material control device 3; a fertilizer application device for precise fertilization in agricultural tillage, comprising: a frame 1, a storage box 2, and a precision material control device 3.

[0042] The vehicle frame 1 has a support platform 11;

[0043] The storage bin 2 is installed on the support platform 11, and the storage bin 2 is provided with a discharge port 21;

[0044] The precision material control device 3 includes a metering cylinder 32, an adjusting plate 3121, a telescopic conveying pipe 31, an on / off valve 34, a sensor 31211, and a control system 33;

[0045] The metering cylinder 32 is installed on the support platform 11 and supported by the support platform 11. The metering cylinder 32 has a fertilizer holding space 321 and is provided with an opening 3211 and a fertilizer inlet 3212. The opening 3211 and the fertilizer inlet 3212 are respectively connected to the fertilizer holding space 321.

[0046] The adjusting plate 3121 covers the opening 3211 and surrounds the metering cylinder 32 to form the fertilizer holding space 321. The adjusting plate 3121 is slidably connected to the metering cylinder 32.

[0047] One end of the telescopic conveying pipe 31 is connected to the storage box 2, and the other end of the telescopic conveying pipe 31 is driven to the adjusting plate 3121, so as to drive the adjusting plate 3121 to move along the extension direction of the metering cylinder 32 and adjust the size of the fertilizer containing space 321. The storage box 2, the telescopic conveying pipe 31 and the fertilizer containing space 321 are connected in sequence.

[0048] At least two on / off valves 34 are provided, and the two on / off valves 34 are respectively installed at the feed inlet of the telescopic conveying pipe 31 and the fertilizer inlet 3212;

[0049] The sensor 31211 is installed on the adjustment plate 3121 and located in the fertilizer holding space 321. The sensor 31211 is used to detect the amount of fertilizer in the fertilizer holding space 321.

[0050] The on / off valve 34 and the sensor 31211 are electrically connected to the control system 33, respectively.

[0051] The working principle of this invention is as follows: First, the single application amount is set by the control system 33. The control system 33 then controls the telescopic conveying pipe 31 accordingly, driving the adjusting plate 3121 to move along the extension direction of the metering cylinder 32. This causes the adjusting plate 3121 and the metering cylinder 32 to enclose a variable fertilizer holding space 321, the size of which is the volume of the single application. At the start of loading, the on / off valve 34 installed at the inlet of the telescopic conveying pipe 31 is opened, and the on / off valve 34 installed at the fertilizer application port 3212 of the metering cylinder 32 is closed. Under gravity, the fertilizer in the storage tank 2 enters the telescopic conveying pipe 31 through the discharge port 21 and the on / off valve 34 at the inlet of the telescopic conveying pipe 31, and then enters the fertilizer holding space 321 within the metering cylinder 32 through the connection structure with the adjusting plate 3121. As fertilizer continues to fall in, the amount of fertilizer in the fertilizer holding space 321 gradually increases. When the sensor 31211 detects that the amount of fertilizer has reached the preset value, the sensor 31211 sends a signal to the control system 33. The control system 33 then closes the on / off valve 34 at the inlet of the telescopic conveying pipe 31, stopping the feeding. At this time, the fertilizer holding space 321 contains exactly the preset capacity of fertilizer. Then, the on / off valve 34 at the inlet of the telescopic conveying pipe 31 remains closed, and the control system 33 controls the on / off valve 34 at the fertilizer application port 3212 of the metering cylinder 32 to open. Under the action of gravity, the fertilizer is discharged through the fertilizer application port 3212 and applied to the target soil area. After the discharge is completed, the on / off valve 34 at the fertilizer application port 3212 of the metering cylinder 32 closes, the telescopic conveying pipe 31 drives the adjusting plate 3121 to return to the loading start position, and the on / off valve 34 at the inlet of the telescopic conveying pipe 31 reopens, entering the next fertilization cycle.

[0052] The drive connection can be achieved by connecting the lifting drive mechanism 35 to the adjustment plate 3121 via an electric telescopic rod 52, a hydraulic telescopic rod 52, or a pneumatic telescopic rod 52; the sensor 31211 is a resistive level sensor 31211, a mechanical limit switch, or a capacitive level sensor 31211.

[0053] Obviously, based on the design of the telescopic conveying pipe 31 driving the adjusting plate 3121 to slide and connect with the metering cylinder 32, thereby adjusting the size of the fertilizer holding space 321, compared with the prior art, the present invention can directly change the fertilizer volume through mechanical structure, realizing stepless adjustment and precise setting of fertilizer amount. It solves the problems of large quantitative deviation and cumbersome adjustment caused by the reliance on parts replacement and coarse valve adjustment in the prior art. It realizes adjustable quantitative fertilization from the structural level, effectively improving the accuracy of fertilizer amount setting and the convenience of operation. Based on the electrical connection design of the sensor 31211, control system 33 and on / off valve 34, compared with the prior art, the present invention constructs an automated closed-loop fertilization process of "setting-detection-feedback-control". Sensor 31211 monitors the amount of fertilizer in fertilizer container space 321. Combined with the precise start and stop control of on / off valve 34 by control system 33, it can automatically complete the entire process of loading, stopping and discharging, avoiding loading errors caused by manual operation or timed control, ensuring a high degree of consistency in the amount of fertilizer applied each time, significantly improving the accuracy of fertilization operations, while reducing the intensity of manual labor and improving work efficiency.

[0054] refer to Figure 1 and Figure 2 Preferably, in this embodiment, the fertilizer inlet 3212 is connected to a uniform spraying device 4, which is used to spray fertilizer uniformly onto the soil surface. The fertilizer output from the fertilizer inlet 3212 is diffused and evenly spread by this device, effectively expanding the fertilizer coverage area on the soil surface and preventing excessive accumulation of fertilizer at the landing point. This avoids localized crop burn or nutrient deficiency caused by uneven fertilization, further improving the accuracy of fertilization and agronomic effects.

[0055] refer to Figure 1 and Figure 2Preferably, in this embodiment, the storage tank 2 is provided with multiple discharge ports 21, which are distributed sequentially and at intervals along the travel direction of the frame 1. Each discharge port 21 is connected to a precision material control device 3, and the fertilizer inlet 3212 of each precision material control device 3 is connected to the uniform spraying device 4. Through the timing control of the control system 33, each precision material control device 3 supplies material to the shared uniform spraying device 4 sequentially and alternately, ensuring that the uniform spraying device 4 obtains a continuous and stable fertilizer flow. This avoids the instantaneous overload and uneven spraying that may be caused by multiple precision material control devices 3 discharging material simultaneously, or the interruption of material supply caused by all units being in the loading period at the same time. As a result, a continuous, gapless, and fluctuation-free uniform fertilization zone is formed on the field, significantly improving the uniformity of the overall fertilization quality. The alternating material discharge strategy spreads the high flow rate and high load pressure that may have been concentrated in an instant over a working cycle. This significantly reduces the instantaneous performance requirements and impact wear on the uniform spraying device 4, the lifting drive mechanism 35, and related pipelines, improving the long-term operational reliability and service life of these key components, and making the system operate more smoothly and durable.

[0056] refer to Figure 4 and Figure 5 Preferably, in this embodiment, the adjusting plate 3121 is provided with multiple threaded grooves 31212, which are distributed circumferentially around the adjusting plate 3121 at intervals, and each threaded groove 31212 is threadedly connected to a sensor 31211. This arrangement can form a multi-point detection array, ensuring that when the fertilizer level in the fertilizer holding space 321 rises to a preset height, it can be detected by multiple sensors 31211, avoiding errors caused by a single detection, providing multiple insurances for accurate quantification each time, and greatly enhancing the system's control fault tolerance and reliability. The sensor 31211 is installed in the prefabricated threaded groove 31212 of the adjusting plate 3121 by threaded connection, making the disassembly, replacement or maintenance of any sensor 31211 very simple, without disassembling the entire adjusting plate 3121 or complex wiring, greatly reducing the maintenance cost and difficulty in later use.

[0057] refer to Figure 6Preferably, in this embodiment, a contact electrode 31213 is provided within the threaded groove 31212, and the contact electrode 31213 is used to electrically connect the sensor 31211. With this configuration, when the sensor 31211 is screwed into the threaded groove 31212, the corresponding contact at its bottom automatically presses against the contact electrode 31213, completing both mechanical fixing and electrical connection simultaneously. This eliminates the need for individual wire leading, soldering, or plugging for each sensor 31211, greatly simplifying the on-site installation, replacement, or maintenance process and improving assembly efficiency and consistency. This rigid, direct metal contact method is more resistant to the continuous vibrations commonly encountered in agricultural machinery operations compared to flexible wire connections. It effectively avoids contact problems or signal interruptions caused by cable fatigue, loose connectors, or oxidation, ensuring the long-term reliable operation of the precision material control device 3. In addition to this method, a spring-loaded metal pin can also be installed at the bottom of the threaded groove 31212. When the sensor 31211 is screwed into place, its bottom flat contact is pressed against the spring pin, forming a passage.

[0058] refer to Figure 4 , Figure 7 and Figure 8 Preferably, in this embodiment, the telescopic conveying pipe 31 includes a sleeve 311 and an insert 312. The sleeve 311 has a limiting groove 3112 extending along the length of the sleeve 311. The insert 312 has a slider 3123, and the limiting groove 3112 and the slider 3123 are in sliding engagement. Through the sliding engagement of the limiting groove 3112 and the slider 3123, the insert 312 is strictly constrained to move only in a straight line along its axial direction (i.e., the length direction) relative to the sleeve 311, and cannot rotate circumferentially or wobble radially. This directly ensures that the adjusting plate 3121 driven by the insert 312 can move stably and vertically within the metering cylinder 32. Stable linear motion is the fundamental mechanical prerequisite for the precise and repeatable adjustment of the fertilizer holding space 321's volume. This design effectively distributes the lateral forces or off-center load moments that may be generated by the adjusting plate 3121 and the internal fertilizer, preventing these forces from acting directly on the precision mating surfaces (such as any sealing surfaces) of the sleeve 311 and the insertion tube 312. This reduces the risk of abnormal wear and jamming of key moving parts, making the operation of the entire lifting drive mechanism 35 smoother and more stable, and significantly improving its long-term reliability and durability under harsh agricultural conditions.

[0059] refer to Figure 4 , Figure 5 , Figure 6 and Figure 9Preferably, in this embodiment, the sleeve 311 is provided with a mounting plate 3111, and the precision material control device 3 further includes a threaded limiting rod 37. The mounting plate 3111 has a threaded hole 3113, which is threadedly connected to the threaded limiting rod 37. The threaded limiting rod 37 has a rotating part 371, and the adjusting plate 3121 has a rotating cavity 31214, with the rotating part 371 located within the rotating cavity 31214. This fundamentally prevents excessive raising or lowering of the adjusting plate 3121 (along with the insertion tube 312) due to errors in the control program of the control system 33, failure of the sensor 31211, or accidental operation. Specifically, it prevents the adjusting plate 3121 from impacting the bottom of the fertilizer holding space 321 inside the metering cylinder 32, and prevents the lifting drive mechanism 35 from driving the adjusting plate 3121 to rise excessively and detach from the metering cylinder 32. This effectively protects the expensive lifting drive mechanism 35, sensor 31211, and the entire telescopic delivery pipe 31 assembly from overload damage, acting as a "mechanical safety valve" for the system. The height to which the adjusting plate 3121 is driven by the lifting drive mechanism 35 can be limited by rotating the threaded limit rod 37, directly corresponding to the maximum adjustable volume of the fertilizer holding space 321.

[0060] refer to Figure 4 and Figure 5 Preferably, in this embodiment, at least two threaded limiting rods 37, two threaded holes 3113, and two rotating cavities 31214 are provided, and the two threaded limiting rods 37, the two threaded holes 3113, and the two rotating cavities 31214 are respectively located on opposite horizontal sides of the central axis of the telescopic conveying pipe 31. This arrangement allows the rotating portions 371 of the symmetrically distributed threaded limiting rods 37 to simultaneously and evenly abut against the corresponding rotating cavities 31214 on the adjusting plate 3121. This symmetrical contact provides the adjusting plate 3121 with a completely balanced horizontal support force, ensuring balanced force distribution and fundamentally preventing any form of tilting, warping, or unilateral jamming of the adjusting plate 3121 (and the rigidly connected insertion tube 312) at its extreme positions. This ensures the alignment between the adjusting plate 3121 and the inner wall of the metering cylinder 32, which is crucial for maintaining the long-term stability, smoothness, and absence of abnormal wear during the entire lifting motion. The symmetrical double-limiting points essentially add a stable and symmetrical constraint frame to the adjusting plate 3121 at the end of its movement path. This greatly enhances the overall structural rigidity and deformation resistance of the adjusting plate 3121 and the connected insertion tube 312 under dynamic loads (such as the impact of falling fertilizer or the bumps during equipment movement). The overall stability of the device during operation is thus improved, further ensuring the repeatability and accuracy of fertilizer metering.

[0061] refer to Figure 1 and Figure 2Preferably, in this embodiment, the agricultural tillage device for precise fertilization further includes a soil loosening mechanism 5. The soil loosening mechanism 5 and the precise material control device 3 are arranged sequentially in the opposite direction of the movement of the frame 1. The soil loosening mechanism 5 includes a plowing component 51 and a telescopic rod 52. The plowing component 51 is movably hinged to the frame 1 via a hinge shaft 6. The telescopic rod 52 is installed on the frame 1, and its output is connected to the plowing component 51 to drive the plowing component 51 to rise and fall relative to the ground. The telescopic rod 52 is electrically connected to the control system 33. By setting the soil loosening mechanism 5 in the opposite direction of the movement of the frame 1 (i.e., in front), the operation process strictly follows the sequence of "soil loosening in front → fertilization following behind". The soil loosening process breaks up the compaction of the soil surface, creating a loose soil environment. The fertilizer applied immediately afterward can more easily enter and integrate into the gaps in the loosened soil, significantly reducing the bouncing and loss of fertilizer on the hard surface. This promotes fertilizer-soil contact, thereby significantly improving the uniformity, depth, and final absorption and utilization rate of fertilizer application from a physical perspective. This is a leap in agronomic effect that cannot be achieved by simply improving the precision of fertilizer application. This design highly integrates the two originally separate field operations of loosening soil and fertilizing into one device and completes them in one trip. This avoids the need to use a separate tractor for loosening soil, greatly saving time, fuel costs, and labor input, and significantly improving the overall efficiency and economy of field management. For large-scale, precision agricultural management, this integrated design is extremely attractive. The plowing component 51 is movably hinged to the frame 1 via the hinge shaft 6, allowing it to passively deflect or lift within a certain angle when encountering unpredictable obstacles such as buried stones or hard clods of soil, providing overload protection and preventing mechanical damage. The telescopic pole 52 provides active and controllable power. The combination of the two ensures the working safety and terrain adaptability of the soil loosening mechanism 5 in complex field environments.

[0062] refer to Figure 2 and Figure 3Preferably, in this embodiment, the telescopic rod 52 is hinged to the frame 1 via a hinge device 7. The hinge device 7 includes a spherical hinge seat 71 and a spherical hinge rod 72. The spherical hinge seat 71 is installed on the frame 1, and the spherical hinge rod 72 connects to and supports the telescopic rod 52. The spherical hinge seat 71 and the spherical hinge rod 72 are spherically hinged. When working in uneven fields, the direction of the reaction force exerted by the ground on the plowing component 51 is complex and variable. Ordinary single-axis hinges would cause the telescopic rod 52 to bear a huge lateral bending moment. However, the spherical hinge allows the spherical hinge rod 72 to swing at small angles in multiple directions within the spherical hinge seat 71, enabling the telescopic rod 52 to automatically adapt and always maintain optimal alignment with the direction of the instantaneous force. This ensures that the output thrust of the telescopic rod 52 is almost entirely converted into an effective vertical force for soil penetration or lifting, thereby guaranteeing the high stability and consistency of the preset loosening depth during execution and reinforcing the accuracy of the pre-treatment soil treatment process. The spherical hinge provides a certain degree of "flexibility" to the connection point, allowing the plowing component 51 to not only rotate around the hinge axis 6 when encountering local obstacles (such as stones or hard clods of soil), but also to have a small lateral clearance space. This allows the entire loosening mechanism 5 to adapt more smoothly to irregular ground contours, reducing the impact caused by sudden jamming, improving the continuity and smoothness of the operation, and indirectly protecting the frame structure 1.

[0063] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0065] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A precision fertilization device for agricultural tillage, characterized in that, include: The frame (1) has a support platform (11). Storage bin (2), the storage bin (2) is installed on the support platform (11), and the storage bin (2) is provided with a discharge port (21); The precision material control device (3) includes a metering cylinder (32), an adjusting plate (3121), a conveying telescopic conveying pipe (31), an on / off valve (34), a sensor (31211), and a control system (33). The metering cylinder (32) is installed on the support platform (11) and supported by the support platform (11). The metering cylinder (32) has a fertilizer holding space (321) and is provided with an opening (3211) and a fertilizer inlet (3212). The opening (3211) and the fertilizer inlet (3212) are respectively connected to the fertilizer holding space (321). The adjusting plate (3121) covers the opening (3211) and surrounds the metering cylinder (32) to form the fertilizer holding space (321). The adjusting plate (3121) and the metering cylinder (32) are slidably connected. One end of the telescopic conveying pipe (31) is connected to the storage box (2), and the other end of the telescopic conveying pipe (31) is driven to the adjusting plate (3121) so that the adjusting plate (3121) can be moved along the extension direction of the metering cylinder (32) and the size of the fertilizer holding space (321) can be adjusted. The storage box (2), the telescopic conveying pipe (31) and the fertilizer holding space (321) are connected in sequence. At least two on / off valves (34) are provided, and the two on / off valves (34) are respectively installed at the feed inlet of the telescopic conveying pipe (31) and the fertilizer inlet (3212). The sensor (31211) is installed on the adjustment plate (3121) and located in the fertilizer holding space (321). The sensor (31211) is used to detect the amount of fertilizer in the fertilizer holding space (321). The on / off valve (34) and the sensor (31211) are electrically connected to the control system (33).

2. The fertilization device for precise fertilization in agricultural tillage according to claim 1, characterized in that, The fertilizer inlet (3212) is connected to a uniform spraying device (4), which is used to spray fertilizer uniformly onto the soil surface.

3. The fertilizer application device for precise fertilization in agricultural tillage according to claim 2, characterized in that, The storage box (2) is provided with multiple discharge ports (21). The multiple discharge ports (21) are distributed sequentially at intervals along the travel direction of the frame (1). Each discharge port (21) is connected to a precision material control device (3). The fertilizer inlet (3212) in each precision material control device (3) is connected to the uniform speed spraying device (4).

4. The fertilization device for precise fertilization in agricultural tillage according to claim 1, characterized in that, The adjusting plate (3121) is provided with a plurality of threaded grooves (31212), which are distributed circumferentially around the adjusting plate (3121) at intervals, and each threaded groove (31212) is threadedly connected to a sensor (31211).

5. A fertilizer application device for precise fertilization in agricultural tillage according to claim 4, characterized in that, The threaded groove (31212) is provided with a contact electrode (31213), which is used to electrically connect the sensor (31211).

6. A precision fertilization device for agricultural tillage as described in claim 1, characterized in that, The telescopic delivery pipe (31) includes a sleeve (311) and an insert (312). The sleeve (311) is provided with a limiting groove (3112), which extends along the length of the sleeve (311). The insert (312) is provided with a slider (3123), and the limiting groove (3112) and the slider (3123) slide together.

7. A precision fertilization device for agricultural tillage as described in claim 6, characterized in that, The sleeve (311) is provided with a mounting plate (3111), and the precision material control device (3) further includes a threaded limiting rod (37). The mounting plate (3111) has a threaded hole (3113), which is threadedly connected to the threaded limiting rod (37). The threaded limiting rod (37) has a rotating part (371), and the adjusting plate (3121) has a rotating cavity (31214). The rotating part (371) is located in the rotating cavity (31214).

8. A precision fertilization device for agricultural tillage according to claim 7, characterized in that, At least two threaded limiting rods (37), threaded holes (3113), and rotary cavities (31214) are provided, and the two threaded limiting rods (37), the two threaded holes (3113), and the two rotary cavities (31214) are respectively located on opposite horizontal sides of the central axis of the telescopic conveying pipe (31).

9. A fertilizer application device for precise fertilization in agricultural tillage according to claim 1, characterized in that, The agricultural tillage device for precise fertilization also includes a soil loosening mechanism (5). The soil loosening mechanism (5) and the precise material control device (3) are arranged sequentially in the opposite direction of the movement of the frame (1). The soil loosening mechanism (5) includes a plowing component (51) and a telescopic rod (52). The plowing component (51) is movably hinged to the frame (1) through a hinge shaft (6). The telescopic rod (52) is installed on the frame (1), and the output part of the telescopic rod (52) is connected to the plowing component (51) to drive the plowing component (51) to rise and fall relative to the ground. The telescopic rod (52) is electrically connected to the control system (33).

10. A precision fertilization device for agricultural tillage as described in claim 9, characterized in that, The telescopic rod (52) is hinged to the frame (1) via a hinge device (7). The hinge device (7) includes a spherical hinge seat (71) and a spherical hinge rod (72). The spherical hinge seat (71) is installed on the frame (1). The spherical hinge rod (72) connects to the telescopic rod (52) and supports the telescopic rod (52). The spherical hinge seat (71) and the spherical hinge rod (72) are spherically hinged.

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