Fertilizer application rate detection device

Abstract

The application relates to a fertilization amount detection device and belongs to the technical field of agricultural fertilization devices. The device comprises a shell, a distribution plate, a fertilizer discharging plate and a first electromagnet. A fertilization cavity is arranged in the shell, a partition plate is arranged in the fertilization cavity, a feeding port is arranged at the top of the shell, and a discharging port is arranged at the bottom of the shell. The distribution plate is rotationally installed above the partition plate. The fertilizer discharging plate is rotationally installed below the partition plate, the fertilizer discharging plate is connected with the distribution plate through a first transmission member, and the first electromagnet is fixedly installed on the shell. When the first or second fertilizer discharging plate rotates to be horizontal, the first electromagnet is attracted, and the fertilizer discharging plate, the partition plate and the inner wall of the shell form a fertilization metering cavity which is communicated with the feeding port. The fertilization cavity is divided into two chambers through the partition plate, and the fertilizer is alternately discharged through the fertilizer discharging plate, so that the overall volume of the fertilization device is effectively reduced. Meanwhile, the first transmission member and the distribution plate rotate synchronously, and the overall volume of the fertilization device is further reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of agricultural fertilizing devices, and more specifically, relates to a fertilizing amount detection device. Background Art

[0002] In agricultural production, fertilization is an important part of agricultural production and plays a vital role in crop growth and yield. High-precision variable-rate fertilization technology not only helps increase agricultural yields, but also reduces fertilizer usage, saves costs, and protects the ecological environment.

[0003] During agricultural machinery operations, fertilization machinery precisely applies fertilizer based on soil nutrient content and crop needs, thereby improving fertilizer utilization and reducing waste. One of the key technologies for variable-rate fertilization is real-time online measurement of fertilizer application rates. Existing fertilizer application rate measurement devices are bulky, occupying considerable space and making them inconvenient to use. To address this issue, achieving high-precision variable-rate fertilization has become crucial for current agricultural development.

[0004] For example, the patent with publication number CN202110442839.0, publication date is 2023-02-28, and the patent name is an online detection device for the amount of fertilizer applied. In this technical solution, two fertilizer storage boxes are arranged in parallel, and the purpose of alternating fertilizer discharge is achieved by alternating rotation of two fertilizer discharge plates in the fertilizer storage box, and a fertilizer guiding mechanism is provided in the feed pipe to allow the fertilizer to alternately enter different fertilizer storage boxes. The overall length of the fertilizer storage box is relatively long, which makes the device larger in size. At the same time, a relatively independent fertilizer guiding mechanism is required to guide the flow direction of the fertilizer, which further increases the volume of the device, and the fertilizer discharge mechanism needs to be controlled in conjunction with the fertilizer guiding mechanism. The control is complex and prone to errors, resulting in the device being unable to discharge fertilizer smoothly and having poor stability. Summary of the Invention

[0005] In order to solve the above problems, the present application proposes a fertilizer application amount detection device, which aims to solve the technical problems of large size and high control difficulty of the fertilizer application amount detection device.

[0006] To achieve the above-mentioned purpose, in one embodiment of the present application, a device for detecting the amount of fertilizer applied is provided, comprising:

[0007] A housing, wherein a fertilizing chamber is constructed in the housing, a partition is provided in the fertilizing chamber, a feed inlet is provided at the top of the housing, and a discharge port is provided at the bottom of the housing;

[0008] a distribution plate, the distribution plate being rotatably mounted above the partition;

[0009] A fertilizer discharge plate having at least partial ferromagnetism, the fertilizer discharge plate being rotatably mounted below the partition plate, the fertilizer discharge plate being connected to the distribution plate via a first transmission member so as to rotate synchronously, the fertilizer discharge plate comprising a first fertilizer discharge plate and a second fertilizer discharge plate which are substantially perpendicular to each other, one end of the first fertilizer discharge plate being fixedly connected to one end of the second fertilizer discharge plate;

[0010] There are two first electromagnets, each of which is fixedly mounted on the housing;

[0011] When the first fertilizer discharge plate or the second fertilizer discharge plate rotates to a horizontal position, it is attracted by the first electromagnet and forms a fertilizer metering cavity together with the partition and the inner wall of the shell. The fertilizer metering cavity is connected to the feed port.

[0012] In one embodiment, the fertilizer application amount detection device further includes a fertilizer discharge acceleration mechanism, which includes a drive motor, a second transmission member, a drive disk, a controller, and a reversing switch; the second transmission member is fixedly mounted on the rotating shaft of the fertilizer discharge plate, and is configured with a protrusion extending in its radial direction;

[0013] The driving motor is fixedly mounted on the housing, the driving disc is fixedly mounted on the output shaft of the driving motor, the driving disc is configured with a groove extending in its radial direction, and the protrusion is embedded in the groove;

[0014] The reversing switch is mounted on the housing, and the reversing switch, the driving motor and the first electromagnet are electrically connected to the controller respectively;

[0015] Wherein, when the first fertilizer discharge plate or the second fertilizer discharge plate is separated from the first electromagnet, the reversing switch gives a trigger signal to the controller.

[0016] In one embodiment, the projection of the protrusion along the axial direction does not completely overlap with the projection of the groove along the axial direction.

[0017] In one embodiment, the angle between the two side surfaces of the protrusion is 1 to 3 degrees smaller than the angle between the two inner side walls of the groove.

[0018] In one solution, the partition has a buffer portion at one end close to the fertilizer discharge plate, and the buffer portion is bent toward both sides of the partition.

[0019] In one embodiment, the projection of the buffer portion in the horizontal direction completely covers the projection of the feed port in the horizontal direction.

[0020] In one embodiment, the housing has a mounting portion, and the first electromagnet is mounted on the mounting portion;

[0021] The ends of the first fertilizer discharge plate and the second fertilizer discharge plate are respectively provided with magnet blocks. When the first fertilizer discharge plate or the second fertilizer discharge plate is rotated to horizontal, the ends of the first fertilizer discharge plate or the second fertilizer discharge plate are in contact with the bottom surface of the corresponding mounting portion.

[0022] In one embodiment, the fertilizer application amount detection device further includes a vertical adjustment mechanism, which includes a base, an L-shaped adjustment rod, a roll adjustment joint module, a pitch adjustment joint module, and an angular velocity sensor; the roll adjustment joint module is mounted on the base, the output flange of the roll adjustment joint module is connected to one end of the adjustment rod, the other end of the adjustment rod is mounted with a pitch adjustment joint module, and the output flange of the pitch adjustment joint module is connected to the housing;

[0023] The angular velocity sensor is mounted on the housing, and the angular velocity sensor, the roll adjustment joint module, and the pitch adjustment joint module are electrically connected to the controller respectively;

[0024] Wherein, the output axes of the roll adjustment joint module and the pitch adjustment joint module are arranged perpendicular to each other.

[0025] In one embodiment, the fertilizer application amount detection device further includes a base, and the base is slidably mounted on the base;

[0026] A second electromagnet is provided at the bottom of the base, and the bottom of the base is magnetic.

[0027] In one solution, a sliding rheostat is vertically mounted on the side of the base, and a sliding piece of the sliding rheostat is fixedly connected to the base.

[0028] Beneficial effects of this application:

[0029] The present application divides the fertilizing chamber into two chambers through a partition, and uses a roughly "L"-shaped fertilizer discharge plate for alternate fertilizer discharge, which effectively reduces the overall volume of the fertilizing device. At the same time, the fertilizer discharge plate and the distribution plate are linked together through a first transmission member so that the two can rotate synchronously, further reducing the overall volume of the fertilizing device, and making the control simpler and the stability higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a structural diagram of a fertilizing device in one embodiment of the present application;

[0032] Figure 2 yes Figure 1 sectional view of

[0033] Figure 3 This is a schematic diagram of the cooperation between the second transmission member and the drive motor in one embodiment of the present application;

[0034] Figure 4 This is a schematic structural diagram of a drive disk in one embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the cooperation between the second transmission member and the drive disc when the first fertilizer discharge plate is horizontal in one embodiment of the present application;

[0036] Figure 6 This is a schematic diagram of the cooperation between the second transmission member and the drive disc when the second fertilizer discharge plate is horizontal in one embodiment of the present application;

[0037] Figure 7 This is a schematic diagram of the cooperation between the vertical adjustment mechanism and the housing in one embodiment of the present application;

[0038] Figure 8 This is a schematic diagram of the assembly of the base and the pedestal in one embodiment of the present application;

[0039] Figure 9 This is a control block diagram of a fertilizing device in one embodiment of the present application;

[0040] Figure 10 This is a control circuit diagram of a fertilizing device in one embodiment of the present application;

[0041] In the figure, 1. shell; 11. fertilizer chamber; 12. feed port; 13. discharge port; 14. fertilizer metering chamber; 15. mounting portion; 16. reversing switch; 2. partition; 21. buffer portion; 3. distribution plate; 4. fertilizer discharge plate; 41. first fertilizer discharge plate; 42. second fertilizer discharge plate; 5. first transmission member; 6. first electromagnet; 7. fertilizer discharge acceleration mechanism; 71. drive motor; 72. second transmission member; 721. protrusion; 73. drive disk; 731. groove; 8. controller; 9. vertical adjustment mechanism; 91. second electromagnet; 92. adjustment rod; 93. sliding rheostat; 94. roll adjustment joint module; 95. pitch adjustment joint module; 96. angular velocity sensor; 97 base; 98. base. DETAILED DESCRIPTION

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0048] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0049] See also Figure 1 and Figure 2 In one embodiment of the present application, a device for detecting a fertilizer application amount is provided, comprising a housing 1, a distribution plate 3, a fertilizer discharge plate 4, and a first electromagnet 6. A fertilizer chamber 11 is constructed within the housing 1, and a partition 2 is disposed within the fertilizer chamber 11. The partition 2 is vertically disposed and located on the vertical centerline of the fertilizer chamber 11, with its upper end extending into a feed port 12.

[0050] A feed port 12 is provided at the top of the shell 1. When in use, it is connected to an external fertilizer supply device through a hose, and the fertilizer is then introduced into the shell 1 from the feed port 12. A discharge port 13 is provided at the bottom of the shell 1. When in use, it is connected to an external fertilizer application device, or directly communicated with the outside world, and the fertilizer is discharged from the discharge port 13 through the discharge port 13.

[0051] The distribution plate 3 is rotatably installed above the partition 2 through a rotating shaft. The lower end of the distribution plate 3 is fixedly connected to the rotating shaft, and the upper end naturally extends upward; the fertilizer discharge plate 4 is at least partially ferromagnetic, and the fertilizer discharge plate 4 is rotatably installed below the partition 2. The fertilizer discharge plate 4 and the distribution plate 3 are connected through a first transmission member 5 so that the two rotate synchronously. The first transmission member 5 adopts a synchronous belt or chain. When in use, it is only necessary to control the fertilizer discharge plate 4 or the distribution plate 3 to ensure perfect synchronization between the two, reducing the number of controls of the device, making the control simpler, and improving the operating stability of the device.

[0052] The fertilizer discharge plate 4 includes a first fertilizer discharge plate 41 and a second fertilizer discharge plate 42 that are approximately perpendicular to each other. One end of the first fertilizer discharge plate 41 and one end of the second fertilizer discharge plate 42 are fixedly connected, so that the fertilizer discharge plate 4 forms an L-shaped structure; there are two first electromagnets 6, which are fixedly mounted on the outer shell 1 respectively.

[0053] When the first fertilizer discharge plate 41 or the second fertilizer discharge plate 42 rotates to a horizontal position, it is attracted by the first electromagnet 6 and forms a fertilizer metering chamber 14 with the partition plate 2 and the inner wall of the shell 1 . The fertilizer metering chamber 14 is connected to the feed port 12 .

[0054] Under normal conditions, either the first fertilizer discharge plate 41 or the second fertilizer discharge plate 42 is in a horizontal position, while the other is in a vertical position. This embodiment describes the operation of the device by assuming that the first fertilizer discharge plate 41 is initially in a horizontal position and the upper end of the distribution plate 3 is resting against the inner wall of the housing 1 on the other side of the housing 1 relative to the first fertilizer discharge plate 41 (with the upper end of the distribution plate 3 tilted to the right).

[0055] During operation, fertilizer is introduced through the feed inlet 12 and, as it passes through the distribution plate 3, is diverted by the distribution plate 3, causing it to fall onto the first fertilizer discharge plate 41 and be temporarily stored in the fertilizer metering chamber 14 formed by the first fertilizer discharge plate 41, the partition 2, and the inner wall of the housing 1. After a period of time, the fertilizer weight in the fertilizer metering chamber 14 reaches a set weight, and the first fertilizer discharge plate 41 overcomes the suction force of the first electromagnet 6 and rotates downward, thereby driving the entire fertilizer discharge plate 4 to rotate counterclockwise. This, in turn, drives the distribution plate 3 to the other side (to the left) via the first transmission member 5, until the second fertilizer discharge plate 42 rotates to a horizontal position and is attracted by the corresponding first electromagnet 6. The top of the distribution plate 3 rests against the inner wall of the housing 1 on the other side of the second fertilizer discharge plate 42. At this point, the first fertilizer discharge plate 41 is vertical, and the fertilizer on the first fertilizer discharge plate 41 is discharged through the discharge port 13, completing the fertilizer discharge operation.

[0056] Then, under the action of the distribution plate 3, the fertilizer falls onto the second fertilizer discharge plate 42 and is temporarily stored in the fertilizer metering chamber 14, which is surrounded by the second fertilizer discharge plate 42, the partition 2, and the inner wall of the housing 1. After a period of time, the weight of the fertilizer in the fertilizer metering chamber 14 reaches the set weight, and the second fertilizer discharge plate 42 overcomes the suction force of the first electromagnet 6 and rotates downward, thereby driving the entire fertilizer discharge plate 4 to rotate clockwise. This, in turn, drives the distribution plate 3 to the other side (to the right) through the first transmission member 5. This continues until the first fertilizer discharge plate 41 rotates to a horizontal position and is attracted by the corresponding first electromagnet 6. The top of the distribution plate 3 rests on the inner wall of the housing 1 on the other side of the first fertilizer discharge plate 41. At this point, the second fertilizer discharge plate 42 is vertical, and the fertilizer on the second fertilizer discharge plate 42 is discharged from the discharge port 13, completing the fertilizer discharge operation.

[0057] By repeating the above-mentioned actions continuously, the continuous discharge of fertilizer is achieved. At the same time, the amount of fertilizer discharged each time is fixed. By counting the number of fertilizer discharges, the accurate measurement of the amount of fertilizer applied can be achieved. Furthermore, the amount of fertilizer discharged each time can be controlled by adjusting the suction force of the first electromagnet 6, effectively improving the applicability of the device.

[0058] During the rotation of the distribution plate 3 and the fertilizer discharge plate 4, at the beginning, the fertilizer on the first fertilizer discharge plate 41 provides the rotation power of the fertilizer discharge plate 4 and the distribution plate 3. When the distribution plate 3 rotates beyond the vertical center line, the distribution plate 3 is impacted by the fertilizer, which can drive the first fertilizer discharge plate 41 and the distribution plate 3 to rotate faster, effectively ensuring that the distribution plate 3 and the fertilizer discharge plate 4 can rotate to the specified position, ensuring the smooth progress of the fertilizer discharge process.

[0059] In one embodiment, the first transmission member 5 is a synchronous belt or chain with high transmission accuracy, which effectively ensures that the fertilizer discharge plate 4 and the distribution plate 3 can rotate synchronously.

[0060] In one embodiment, if Figure 3-Figure 6 As shown, the fertilizer amount detection device also includes a fertilizer discharge acceleration mechanism 7, which includes a drive motor 71, a second transmission member 72, a drive disk 73, a controller 8 and a reversing switch 16; the drive motor 71 is a stepping motor or a servo motor, and the second transmission member 72 is fixedly mounted on the rotating shaft of the fertilizer discharge plate 4, and the second transmission member 72 is configured with a protrusion 721 extending along its radial direction; the drive motor 71 is fixedly mounted on the housing 1, and a drive disk 73 is fixedly mounted on the output shaft of the drive motor 71, and the drive disk 73 is configured with a groove 731 extending along its radial direction, and the protrusion 721 is embedded in the groove 731. When the weight of the fertilizer on the first fertilizer discharge plate 41 is greater than the suction force of the first electromagnet 6, and the first fertilizer discharge plate 41 begins to rotate downward, the drive motor 71 starts, and drives the second transmission member 72 to rotate through the drive disk 73, thereby driving the fertilizer discharge plate 4 and the distribution plate 3 to rotate rapidly, so that the fertilizer discharge plate 4 and the distribution plate 3 can be quickly rotated to the next designated position, effectively increasing the fertilizer discharge rate and enabling the device to operate at a high rate.

[0061] The reversing switch 16 is mounted on the housing 1. The reversing switch 16, the drive motor 71, and the first electromagnet 6 are electrically connected to the interrupt port of the controller 8. The drive motor 71 is a stepper motor or a servo motor. When the first or second fertilizer discharge plate is separated from the first electromagnet, the reversing switch 16 sends a trigger signal to the controller 8. Specifically, the two contacts of the reversing switch 16 are arranged on the housing 1 below the first electromagnet 6. The fertilizer discharge plate 4 is made of conductive iron plate. When the fertilizer discharge plate 4 is attracted by the first electromagnet 6, the fertilizer discharge plate 4 is connected to the two contacts of the reversing switch 16. When the fertilizer discharge plate 4 is separated from the suction of the first electromagnet 6, the two contacts of the reversing switch 16 are disconnected, generating an alternating voltage signal. The reversing switch 16 then transmits the signal to the controller 8. The controller 8 controls the drive motor 71 to rotate a certain angle in the corresponding direction according to the signal sent by the reversing switch 16 on the corresponding side, thereby accelerating the fertilizer discharge efficiency of the device.

[0062] In one embodiment, the controller 8 is electrically connected to the counter and the display. When the reversing switch 16 transmits a signal to the controller 8, the counter accumulates once. The controller 8 obtains the total amount of fertilizer applied based on the accumulated number of signals from the counter and the set amount of fertilizer applied each time, and then transmits the amount of fertilizer applied to the display for display.

[0063] In one embodiment, the projection of the protrusion 721 along its axial direction does not completely overlap with the projection of the groove 731 along its axial direction, so that the overall volume of the groove 731 is larger than the volume of the protrusion 721. When the first fertilizer discharge plate 41 is in a horizontal state, the right mating surface of the protrusion 721 and the right mating surface of the groove 731 are in contact with each other, and a gap exists between the left mating surface of the protrusion 721 and the left mating surface of the groove 731. This allows the first fertilizer discharge plate 41 to rotate a short distance when overcoming the electromagnet and then be driven by the drive motor 71, effectively ensuring the accuracy of the amount of fertilizer discharged each time. Similarly, when the second fertilizer discharge plate 42 is in a horizontal state, the left mating surface of the protrusion 721 and the left mating surface of the groove 731 are in contact with each other, and a gap exists between the right mating surface of the protrusion 721 and the right mating surface of the groove 731.

[0064] In one embodiment, the angle (angle A) between the two side surfaces of the protrusion 721 is 1 to 3 degrees smaller than the angle (angle B) between the two inner walls of the groove 731, so that the fertilizer discharge plate 4 can fall freely for a distance after breaking away from the suction of the first electromagnet 6, effectively preventing the self-locking of the drive motor 71 from affecting the accuracy of the device in detecting the amount of fertilizer applied.

[0065] In one embodiment, if Figure 2 As shown, the housing 1 has a mounting portion 15, and the first electromagnet 6 is mounted on the mounting portion 15;

[0066] The ends of the first fertilizer discharge plate 41 and the second fertilizer discharge plate 42 are respectively provided with magnet blocks, so that part of the fertilizer discharge plate 4 has magnetism; when the first fertilizer discharge plate 41 or the second fertilizer discharge plate 42 is rotated to horizontal, the end of the first fertilizer discharge plate 41 or the second fertilizer discharge plate 42 is in contact with the bottom surface of the corresponding mounting portion 15, effectively preventing fertilizer from leaking from the gap between the fertilizer discharge plate 4 and the outer shell 1.

[0067] In one embodiment, if Figure 2 As shown, the partition 2 has a buffer portion 21 at one end close to the fertilizer discharge plate 4, and the buffer portion 21 is bent to both sides of the partition 2. When the fertilizer is introduced from the feed port 12, the buffer portion 21 guides the fertilizer to prevent the falling fertilizer from directly impacting the fertilizer discharge plate 4, thereby reducing the impact of the fertilizer on the fertilizer discharge plate 4, and thereby improving the accuracy of the amount of fertilizer discharged each time.

[0068] In one embodiment, the projection of the buffer portion 21 in the horizontal direction completely covers the projection of the feed port 12 in the horizontal direction, so that the fertilizer introduced from the feed port 12 can preferentially impact the buffer portion 21, reducing the impact of the fertilizer discharge plate 4 when the fertilizer falls, and improving the detection accuracy of the device.

[0069] In one embodiment, if Figure 7-10 As shown, the fertilizer amount detection device also includes a vertical adjustment mechanism 9, which includes a base 98, an "L"-shaped adjustment rod 92, a roll adjustment joint module 94, a pitch adjustment joint module 95, and an angular velocity sensor 96; the base 98 is equipped with a roll adjustment joint module 94, the output flange of the roll adjustment joint module 94 is connected to one end of the adjustment rod 92, and the other end of the adjustment rod 92 is equipped with a pitch adjustment joint module 95, and the output axes of the roll adjustment joint module 94 and the pitch adjustment joint module 95 are arranged perpendicular to each other; the output flange of the pitch adjustment joint module 95 is connected to the housing 1; the angular velocity sensor 96 is installed on the housing 1, and the angular velocity sensor 96, the roll adjustment joint module 94 and the pitch adjustment joint module 95 are electrically connected to the controller 8 respectively.

[0070] During operation, the angular velocity sensor 96 detects the roll angle of the shell 1 in real time and transmits it to the controller 8. The controller 8 controls the roll adjustment joint module 94 and the pitch adjustment joint module 95 to rotate in opposite directions according to the input signal, thereby keeping the shell 1 in a vertical state, so that the gravity of the fertilizer on the fertilizer discharge plate 4 can be loaded to the corresponding fertilizer discharge plate 4 to the maximum extent, effectively improving the detection accuracy of the device.

[0071] The control logic of the controller 8 is that when the shell 1 tilts forward, the angular velocity sensor 96 transmits the forward tilt angle of the shell 1 to the controller 8, and the controller 8 controls the pitch adjustment joint module 95 to rotate in the opposite direction by a corresponding angle, thereby maintaining the shell 1 in a vertical state; similarly, when the shell 1 tilts to the side, the controller 8 controls the roll adjustment joint module 94 to rotate in the opposite direction by a corresponding angle, and drives the shell 1 to rotate through the adjustment rod 92, thereby maintaining the shell 1 in a vertical state.

[0072] In one embodiment, the fertilizer amount detection device also includes a base 97, and a base 98 is slidably mounted on the base 97; a second electromagnet 91 is provided at the bottom of the base 97, and the bottom of the base 98 is magnetic. When the second electromagnet 91 is energized, it generates a magnetic field with a magnetic pole opposite to the direction of the base 98. The base 98 is repelled and suspended above the second electromagnet 91. The repulsive effect between the second electromagnet 91 and the base 98 offsets the vibration caused by the outside world, such as when the device is installed on a fertilizer machine, the vibration of the fertilizer machine during operation; thereby improving the detection accuracy of the device.

[0073] In one embodiment, a sliding rheostat 93 is vertically mounted on the side of the base 97, and the slider of the sliding rheostat 93 is fixedly connected to the base 98. The second electromagnet 91 and the sliding rheostat 93 are connected in series with the power supply. When the base 98 moves downward, the slider of the sliding rheostat is driven to move downward, the resistance of the sliding rheostat 93 decreases, and the magnetism of the second electromagnet 91 increases, thereby increasing the repulsive force on the base 98, so that it can move upward to the corresponding position faster. Compared with using elastic elements such as springs as vibration damping elements, in this solution, when the gap between the second electromagnet 91 and the base 98 decreases, the magnetism of the second electromagnet 91 will also be enhanced synchronously, so that the repulsive force between the two is no longer a linear change, but the smaller the distance, the more rapidly the repulsive force increases, so that the device can better absorb small-amplitude vibrations and, at the same time, better resist large-amplitude vibrations.

[0074] Fertilizer amount detection principle:

[0075] From the design structure, after the fertilizer discharged by the fertilizer spreader falls into the device, under the coordinated action of the distribution plate 3 and the fertilizer discharge plate 4, the two fertilizer metering chambers 14 alternately meter and discharge the fertilizer, thereby realizing online real-time detection of the fertilizer amount.

[0076] The amount of fertilizer applied Q = fm, where m is the single discharge mass of the two fertilizer metering chambers 14 under a specific metering voltage, and its value is set by the PWM voltage regulation module, that is, by adjusting the suction force of the first electromagnet 6; f is the total number of triggering times of the two reversing switches 16 (that is, the total number of alternating pulse signals generated by the system).

[0077] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A fertilizer application amount detection device, characterized in that: include: A housing, wherein a fertilizing chamber is constructed in the housing, a partition is provided in the fertilizing chamber, a feed inlet is provided at the top of the housing, and a discharge port is provided at the bottom of the housing; a distribution plate, the distribution plate being rotatably mounted above the partition; A fertilizer discharge plate having at least partial ferromagnetism, the fertilizer discharge plate being rotatably mounted below the partition plate, the fertilizer discharge plate being connected to the distribution plate via a first transmission member so as to rotate synchronously, the fertilizer discharge plate comprising a first fertilizer discharge plate and a second fertilizer discharge plate perpendicular to each other, one end of the first fertilizer discharge plate being fixedly connected to one end of the second fertilizer discharge plate; and There are two first electromagnets, each of which is fixedly mounted on the housing; When the first fertilizer discharge plate or the second fertilizer discharge plate rotates to a horizontal position, it is attracted by the first electromagnet and forms a fertilizer metering cavity with the partition plate and the inner wall of the shell, and the fertilizer metering cavity is connected to the feed port; It also includes a fertilizer discharge acceleration mechanism, which includes a drive motor, a second transmission member, a drive disk, a controller and a reversing switch; the second transmission member is fixedly mounted on the rotating shaft of the fertilizer discharge plate, and the second transmission member is configured with a protrusion extending in its radial direction; The driving motor is fixedly mounted on the housing, the driving disc is fixedly mounted on the output shaft of the driving motor, the driving disc is configured with a groove extending in its radial direction, and the protrusion is embedded in the groove; The reversing switch is mounted on the housing, and the reversing switch, the driving motor and the first electromagnet are electrically connected to the controller respectively; Wherein, when the first fertilizer discharge plate or the second fertilizer discharge plate is separated from the first electromagnet, the reversing switch gives a trigger signal to the controller.

2. A fertilizer application amount detection device according to claim 1, characterized in that: The projection of the protrusion along the axial direction thereof does not completely coincide with the projection of the groove along the axial direction thereof.

3. A fertilizer application amount detection device according to claim 2, characterized in that: One end of the partition close to the fertilizer discharge plate is provided with a buffer portion, and the buffer portion is bent toward both sides of the partition.

4. A fertilizer application amount detection device according to claim 3, characterized in that: The projection of the buffer portion in the horizontal direction completely covers the projection of the feed port in the horizontal direction.

5. A fertilizer application amount detection device according to claim 4, characterized in that: The housing has a mounting portion, and the first electromagnet is mounted on the mounting portion; The ends of the first fertilizer discharge plate and the second fertilizer discharge plate are respectively provided with magnet blocks. When the second fertilizer discharge plate rotates to a horizontal position, the end of the first fertilizer discharge plate or the second fertilizer discharge plate fits into the bottom surface of the corresponding mounting portion.

6. A fertilizer application amount detection device according to any one of claims 1 to 5, characterized in that: Also includes A vertical adjustment mechanism comprising a base, an L-shaped adjustment rod, a roll adjustment joint module, a pitch adjustment joint module, and an angular velocity sensor; the roll adjustment joint module is mounted on the base, the output flange of the roll adjustment joint module is connected to one end of the adjustment rod, the pitch adjustment joint module is mounted on the other end of the adjustment rod, and the output flange of the pitch adjustment joint module is connected to the housing; The angular velocity sensor is mounted on the housing, and the angular velocity sensor, the roll adjustment joint module, and the pitch adjustment joint module are electrically connected to the controller respectively; Wherein, the output axes of the roll adjustment joint module and the pitch adjustment joint module are arranged perpendicular to each other.

7. A fertilizer application amount detection device according to claim 6, characterized in that: Also includes a base, on which the base is slidably mounted; A second electromagnet is provided at the bottom of the base, and the bottom of the base is magnetic.

8. A fertilizer application amount detection device according to claim 7, characterized in that: A sliding rheostat is vertically installed on the side of the base, and a sliding piece of the sliding rheostat is fixedly connected to the base.

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