Spreading and fertilizing device for granular fertilizer and unmanned aerial vehicle

Abstract

The invention belongs to the field of agricultural fertilization, and particularly relates to a granular fertilizer spreading and fertilizing device which comprises a fertilizer box, a base is arranged in an inner cavity of the lower portion of the fertilizer box, a cylindrical cavity and a material pushing cavity are formed in the base, and a discharging opening is formed in an interlayer between the material pushing cavity and the cylindrical cavity; an arc-shaped blanking cavity is further formed in the base; the measuring roller is coaxially and rotatably arranged in the cylindrical cavity, and a measuring cavity is formed in the outer circumference of the measuring roller; a supporting shaft is coaxially and fixedly mounted on the measuring roller; a circular cover is fixedly mounted at the bottom end of the limiting rod and is in coaxial linkage connection with the supporting shaft, a guide rod is fixedly mounted on one side of the surface of the outer tooth surface rotating disc, and a discharging cavity is formed in the discharging barrel and communicates with the connecting channel. The invention further provides an unmanned aerial vehicle, the unmanned aerial vehicle provided with the broadcasting and fertilizing device can fly in the field according to needs, and by means of the broadcasting function of the broadcasting and fertilizing device on the granular fertilizer, the fertilizing process of the granular fertilizer is more convenient, and the fertilizing effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural fertilization, and in particular relates to a granular fertilizer spreading and fertilizing device and an unmanned aerial vehicle. Background Art

[0002] At present, in the fertilization device of the related technology, the machine for spreading granular fertilizer needs to enter the field, which is easy to cause damage to crops and reduce crop yields.

[0003] Low-altitude economy is a comprehensive economic form that is driven by various low-altitude flight activities of various manned and unmanned aircraft, and radiates to drive the integrated development of related fields. With the rapid development of low-altitude economy, drones are applied to all walks of life. In the field of agricultural fertilization, drones that can fertilize have also appeared. Drones that can spread granular fertilizers generally include drones and fertilization devices installed on drones; in the structure of the related technology fertilization device, the valve at the bottom of the fertilizer box is controlled to spread the granular fertilizer in the box to the target area. When the granular fertilizer is discharged, the discharge amount and discharge speed of the fertilizer cannot be controlled, and the fertilizer falls on the field in a relatively concentrated position, which makes the granular fertilizer discharge too concentrated, and the granular fertilizer cannot be evenly spread, affecting the fertilization effect on the field. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a granular fertilizer spreading and fertilizing device and a drone, aiming to solve the technical problem that traditional fertilizing devices cannot control the discharge amount and discharge speed of fertilizers, and the fertilizers fall on the fields in a relatively concentrated position, making the granular fertilizer discharge too concentrated, and the granular fertilizer cannot be evenly spread, affecting the fertilization effect on the fields.

[0005] To achieve the above object, the present invention provides the following technical solutions.

[0006] An embodiment of the present invention provides a granular fertilizer spreading and fertilizing device, comprising: A fertilizer box, wherein the inner cavity at the lower part of the fertilizer box has a base, the base has a cylindrical cavity and a material pushing cavity located above the cylindrical cavity, and a material discharge port is provided on the partition between the material pushing cavity and the cylindrical cavity; the base also has an arc-shaped material discharge cavity communicated with the cylindrical cavity; A measuring roller, the measuring roller is coaxially rotatably arranged in the cylindrical cavity, a measuring cavity is opened on the outer circumference of the measuring roller; a support shaft is coaxially fixedly installed on the measuring roller; A limit rod, a circular cover is fixedly installed at the bottom end of the limit rod, and the circular cover is rotatably arranged on the outer wall of the fertilizer box; the circular cover is coaxially linked with the support shaft; A push assembly, a push-pull assembly is arranged in the push cavity, the push assembly comprises an outer tooth surface turntable, a guide rod is fixedly mounted on one side of the outer tooth surface turntable surface, and when the limit rod is in a vertical state, the top end of the limit rod is located at three quarters of the height of the outer tooth surface turntable; A discharging barrel has a discharging cavity inside, which is communicated with the connecting channel, and the granular fertilizer discharged through the connecting channel will fall into the discharging cavity.

[0007] Furthermore, the outer tooth surface turntable is coaxially fixedly installed on the end of the push shaft, the end of the push shaft rotates and extends outside the fertilizer box, the push shaft is coaxially rotatably arranged in the push cavity, and a spiral blade is installed on the push shaft located in the push cavity.

[0008] Furthermore, the pushing assembly also includes a servo motor, which is fixedly mounted on the fertilizer box. The output shaft of the servo motor is connected to the external toothed turntable by a sprocket, so that the servo motor drives the external toothed turntable to rotate. The rotating external toothed turntable synchronously rotates the pushing shaft, thereby driving the spiral blades on the pushing shaft to realize the pushing effect, and push the granular fertilizer in the pushing cavity to the lower feed port.

[0009] Furthermore, a driven gear is coaxially fixed on the end of the support shaft that rotatably extends to the outside of the fertilizer box, the circular cover is coaxially arranged with the driven gear, and a linkage gear that meshes with the driven gear is rotatably arranged on the outer wall of the fertilizer box, and an inner gear ring that meshes with the linkage gear is arranged on the inner ring of the circular cover.

[0010] Furthermore, a discharging slider is slidably provided in the discharging cavity, and a blocking plate is integrally formed on the top of the discharging slider. When the discharging slider slides a certain distance in the discharging cavity, the connecting channel can be kept in a non-discharging state. Of course, as the discharging slider continues to slide in the discharging cavity, the blocking plate is no longer aligned with the connecting channel, and the granular fertilizer in the connecting channel will enter the discharging cavity; The discharging slider is fixedly connected with a U-shaped rod, the other end of the U-shaped rod is located outside the discharging barrel, and the other end of the U-shaped rod is installed with a convex column. A connecting spring is sleeved on the U-shaped rod located in the discharging barrel. The connecting spring is used to continuously compress the discharging slider when it continues to slide in the discharging cavity. When the force pushing the discharging slider to slide suddenly disappears, the elastic reset effect of the connecting spring will push the discharging slider to slide instantly and accelerate, so that the discharging slider can quickly push out the granular fertilizer in the discharging cavity; The outer wall of the circular cover is also fixedly connected to the top of the swing rod, the limit rod and the swing rod are arranged in a colinear manner, and the circular cover is located between the swing rod and the limit rod; a strip hole is opened on the swing rod, and the strip hole is sleeved on the convex column.

[0011] Furthermore, a position-adjustable adjustment block is provided in the measuring chamber. The adjustment block is mounted on the adjustment screw by a threaded connection. An adjustment handle is installed on the end of the adjustment screw. By manually rotating the adjustment handle, the adjustment screw can be rotated a certain number of times, thereby adjusting the position of the adjustment block in the measuring chamber.

[0012] Another embodiment of the present invention provides a drone, including a frame and four sets of wing propellers installed at the four corners of the frame; the frame is also equipped with the fertilization device provided in the above embodiment, and the fertilizer box included in the fertilization device is fixed to the frame by bolts.

[0013] Compared with the prior art, the granular fertilizer spreading and fertilizing device and the drone of the present invention have the following beneficial effects: First, a servo motor is used to drive the outer tooth surface turntable to rotate, and the rotating outer tooth surface turntable drives the push assembly to move. The push-pull assembly is arranged in the push cavity, and is used to push the granular fertilizer in the push cavity to the discharge port. On the one hand, the set push assembly can avoid the problem of accumulation of fertilizer particles in the fertilizer cavity and the push cavity, which leads to the problem of inability to flow. On the other hand, the set push assembly can push the fertilizer particles to the discharge port, which is conducive to the granular fertilizer in the fertilizer cavity and the push cavity to flow out from the discharge port; Second, while the outer tooth surface turntable rotates, the guide rod is driven to rotate clockwise. During the clockwise movement of the guide rod, it first contacts the limit rod and pushes the swing rod to swing to the left. At this time, the circular cover will be pushed to rotate counterclockwise around its axis by a certain angle. At this time, the counterclockwise rotation of the circular cover synchronously drives the measuring roller to rotate counterclockwise by a certain angle, so that the measuring cavity changes from a state of being aligned with the discharge port to a state of being aligned with the arc-shaped blanking cavity. This process will deliver the quantitative granular fertilizer filled in the measuring cavity to the arc-shaped blanking cavity; moreover, when the circular cover rotates counterclockwise around its axis by a certain angle, the swing rod pushes the convex column to move right, that is, pushes the U-shaped rod to drive the discharging slider to move right in the discharging cavity, and gradually compresses the connecting spring, so that the granular fertilizer in the arc-shaped blanking cavity enters the discharging cavity; Third, as the guide rod continues to rotate clockwise, the moment the guide rod is separated from the limit rod, the elastic reset action of the connecting spring pushes the swing rod, the circular cover, and the limit rod to reset, so that the measuring chamber returns to the state of being aligned with the discharge port. At this time, the fertilizer in the pushing chamber continues to fill the measuring chamber through the discharge port; in addition, when the connecting spring is elastically reset, the discharging slider is pushed to accelerate instantly in the discharging chamber, and the granular fertilizer in the discharging chamber is quickly pushed out, which can make the fertilizer spread farther and over a wider range; Fourthly, the UAV equipped with the broadcasting and fertilizing device of the present invention can fly in the fields as needed, and utilize the broadcasting and fertilizing device to broadcast the granular fertilizer, so that the fertilization process of the granular fertilizer is more convenient, and the fertilization range is wide, the fertilization is uniform, and the fertilization effect is good; wherein, in the broadcasting and fertilizing device, when utilizing the elastic reset of the connecting spring, the discharging slider is pushed to accelerate instantaneously in the discharging chamber, and the granular fertilizer in the discharging chamber is quickly pushed out, which can make the fertilizer be broadcast farther and over a wider range, and can reduce the influence of the UAV airflow on the fertilization process, because part of the granular fertilizer can quickly leave the airflow influence area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural diagram of a granular fertilizer spreading and fertilizing device provided by the present invention; Figure 2 A schematic diagram of the structure of a drone provided by the present invention; Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 for Figure 1 A front view of a fertilizing device for spreading granular fertilizer provided; Figure 5 for Figure 4 A cross-sectional view of a fertilizing device for spreading granular fertilizer is provided; Figure 6 for Figure 5 The enlarged schematic diagram of point B in the middle; Figure 7 A schematic diagram of the cooperation between the push cavity and the arc-shaped blanking cavity provided by the present invention; Figure 8 A schematic diagram of the structure of the unloading roller provided by the present invention; Fig. 9 A schematic diagram of the cooperation between the adjusting block and the adjusting screw rod provided by the present invention; Fig.10 A schematic diagram of the cooperation between the swing arm and the discharging assembly provided by the present invention; Fig.11 This is a schematic structural diagram of the discharging assembly provided by the present invention.

[0015] The reference numerals are as follows: 100, fertilizer box; 101, feeding port; 102, feeding cylinder; 103, fertilizer cavity; 104, pushing cavity; 105, cylindrical cavity; 106, arc-shaped dropping cavity; 107, feeding port; 108, base; 200, discharge barrel; 201, guide rail; 202, U-shaped rod; 203, boss; 204, discharge cavity; 205, discharge slider; 2051, blocking plate; 206, connecting spring; 207, connecting channel; 300, swing rod; 301, strip hole; 302, circular cover; 303, limit rod; 304, inner gear ring; 305, linkage gear; 306, driven gear; 400, external tooth surface turntable; 401, guide rod; 402, servo motor; 403, pusher shaft; 404, spiral blade; 500, adjusting handle; 501, adjusting screw rod; 502, adjusting block; 600, measuring roller; 601, supporting shaft; 602, measuring chamber; 700, frame; 701, wing propeller. DETAILED DESCRIPTION

[0016] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0017] In one embodiment provided by the present invention, a granular fertilizer spreading and fertilizing device is provided, and the granular fertilizer spreading and fertilizing device is used to spread the fertilizer granules so that the granular fertilizer is evenly spread in the field; Please refer to Figure 1-Figure 4 The fertilization device of the present invention comprises a fertilizer box 100, which is used to store granular fertilizers to be spread, wherein a feeding cylinder 102 is connected to the top of the fertilizer box 100, and a feeding port 101 is provided at the top of the feeding cylinder 102. The feeding port 101 can be matched with a corresponding cover. When it is not necessary to feed granular fertilizers into the fertilizer box 100 through the feeding port 101 and the feeding cylinder 102, the cover is placed on the feeding port 101 to close the feeding port 101. For further information, please refer to Figure 1-Figure 5 The upper inner cavity of the fertilizer box 100 is divided into two fertilizer chambers 103 by a partition. The purpose of dividing into two fertilizer chambers 103 is that the two fertilizer chambers 103 are used to store different granular fertilizers. In actual setting, the partition may not be used and a structure of one fertilizer chamber 103 may be adopted. The specific details are not limited. Among them, Figure 5-Figure 7 As shown, the lower inner cavity of the fertilizer box 100 has a base 108, the base 108 has a cylindrical cavity 105 and a pushing cavity 104 located above the cylindrical cavity 105, and a discharge port 107 is opened on the partition between the pushing cavity 104 and the cylindrical cavity 105, and the discharge port 107 is used to allow the granular fertilizer in the pushing cavity 104 to enter the cylindrical cavity 105; in addition, the pushing cavity 104 is connected to the bottom end of the inclined bottom surface of the fertilizer cavity 103, so that the granular fertilizer in the fertilizer cavity 103 can automatically enter the pushing cavity 104; Further, such as Figure 6 and Figure 8As shown, a measuring roller 600 is coaxially rotated in the cylindrical cavity 105, and a measuring cavity 602 is opened on the outer circumference of the measuring roller 600. When the measuring roller 600 rotates until the measuring cavity 602 is aligned with the feed opening 107, the granular fertilizer in the pushing cavity 104 can pass through the feed opening 107 and fall into the measuring cavity 602; on the contrary, when the measuring cavity 602 is not aligned with the feed opening 107, that is, the measuring cavity 602 is completely offset from the feed opening 107, at this time, the granular fertilizer in the pushing cavity 104 will not pass through the feed opening 107 and enter the cylindrical cavity 105.

[0018] Please continue reading Figure 6 and Figure 7 The base 108 is also provided with an arc-shaped blanking cavity 106 communicating with the cylindrical cavity 105. The axis of the arc-shaped blanking cavity 106 is coaxial with the axis of the cylindrical cavity 105, that is, the arc-shaped blanking cavity 106 is wrapped around the inner wall of one side of the cylindrical cavity 105. Figure 6 As shown in the example, Figure 6 In this state, there is granular fertilizer in the measuring chamber 602, and the measuring roller 600 rotates counterclockwise by a certain angle until the measuring chamber 602 is completely offset from the discharge port 107, and when the measuring chamber 602 is communicated with the arc-shaped dropping chamber 106, the granular fertilizer in the measuring chamber 602 will fall into the arc-shaped dropping chamber 106; further, a connecting channel 207 communicating with the arc-shaped dropping chamber 106 is provided at the bottom of the fertilizer box 100, so when there is granular fertilizer in the arc-shaped dropping chamber 106, the granular fertilizer in the arc-shaped dropping chamber 106 will be quickly discharged through the connecting channel 207.

[0019] Please continue reading Figure 1-Figure 6 The fertilizing device of the present invention further includes a pushing assembly, and the push-pull assembly is arranged in the pushing cavity 104, and is used to push the granular fertilizer in the pushing cavity 104 to the discharge port 107. On the one hand, the set pushing assembly can avoid the accumulation of fertilizer particles in the fertilizer cavity 103 and the pushing cavity 104, resulting in the problem of being unable to flow. On the other hand, the set pushing assembly can push the fertilizer particles to the discharge port 107, which is conducive to the granular fertilizer in the fertilizer cavity 103 and the pushing cavity 104 to flow out from the discharge port 107; Among them, Figure 3-Figure 7 In the embodiment of the present invention, the push assembly includes an outer tooth surface turntable 400, the outer tooth surface turntable 400 is coaxially fixedly installed at the end of the push shaft 403, the end of the push shaft 403 rotates and extends to the outside of the fertilizer box 100, the push shaft 403 is coaxially rotatably arranged in the push cavity 104, and the push shaft 403 located in the push cavity 104 is installed with a spiral blade 404; Figure 7As shown, since both ends of the pushing cavity 104 of the present invention have a feeding port 107, the spiral blade 404 arranged on the pushing shaft 403 is a two-stage structure, and the two sections of the spiral blade 404 have opposite rotation directions. When the pushing shaft 403 rotates, the two sections of the spiral blade 404 push the granular fertilizer on its surface to the corresponding feeding port 107 respectively; The pushing assembly also includes a servo motor 402, which is fixedly mounted on the fertilizer box 100. The output shaft of the servo motor 402 is connected to the external toothed turntable 400 by a sprocket. The servo motor 402 drives the external toothed turntable 400 to rotate. The rotating external toothed turntable 400 synchronously rotates the pushing shaft 403, thereby driving the spiral blades 404 on the pushing shaft 403 to realize the pushing effect, and push the granular fertilizer in the pushing cavity 104 to the lower feed port 107.

[0020] Further, such as Figure 6 , Figure 8 , Fig.10 and Fig.11 As shown, a support shaft 601 is coaxially fixedly installed on the measuring roller 600; the fertilizing device of the present invention also includes a limit rod 303, a circular cover 302 is fixedly installed on the bottom end of the limit rod 303, and the circular cover 302 is rotatably arranged on the outer wall of the fertilizer box 100; the circular cover 302 is coaxially linked with the support shaft 601, and when the circular cover 302 rotates on the outer wall of the fertilizer box 100, it will synchronously drive the support shaft 601 to rotate, that is, synchronously drive the measuring roller 600 to rotate a certain angle, so as to use the measuring cavity 602 to perform the dropping process of the granular fertilizer; Preferably, in order to realize the coaxial linkage connection between the circular cover 302 and the support shaft 601, a driven gear 306 is coaxially fixedly arranged on the end of the support shaft 601 that rotates and extends to the outside of the fertilizer box 100, and the circular cover 302 is coaxially arranged with the driven gear 306. A linkage gear 305 that meshes with the driven gear 306 is also rotatably arranged on the outer wall of the fertilizer box 100, and an inner gear ring 304 that meshes with the linkage gear 305 is arranged on the inner ring of the circular cover 302. Under this structure, the circular cover 302 can drive the measuring roller 600 to rotate over a larger range while rotating a smaller amplitude, so that the measuring chamber 602 can realize the complete stroke of the granular fertilizer, that is, the measuring chamber 602 can reach a state of being connected with the arc-shaped blanking chamber 106.

[0021] In particular, if Figure 1-Figure 3As shown, a guide rod 401 is fixedly installed on one side of the surface of the outer tooth surface turntable 400 provided in an embodiment of the present invention. When the outer tooth surface turntable 400 rotates, the guide rod 401 performs a circular motion. When the limit rod 303 is in a vertical state, the top of the limit rod 303 is located at three-quarters of the height of the outer tooth surface turntable 400. That is to say, when the guide rod 401 performs a circular motion, when the guide rod 401 moves to a quarter area of ​​the outer tooth surface turntable 400, the guide rod 401 does not contact the limit rod 303; accordingly, when the guide rod 401 moves in the three-quarter area of ​​the outer tooth surface turntable 400, as the guide rod 401 performs a circular motion, the limit rod 303 is synchronously pushed to move, so that the circular cover 302 swings around the axis on which it is rotatably installed (i.e., the axis of the measuring roller 600).

[0022] like Figure 3 , Figure 5 , Fig.10 and Fig.11 As shown, the fertilizing device of the present invention also includes a discharge barrel 200, and a discharge chamber 204 is provided inside the discharge barrel 200, and the discharge chamber 204 is communicated with the connecting channel 207, and the granular fertilizer discharged through the connecting channel 207 will fall into the discharge chamber 204; a discharge slider 205 is slidably provided in the discharge chamber 204, and a blocking plate 2051 is integrally formed on the top of the discharge slider 205. When the discharge slider 205 slides a certain distance in the discharge chamber 204, the connecting channel 207 can be kept in a non-discharging state. Of course, as the discharge slider 205 continues to slide in the discharge chamber 204, the blocking plate 2051 is no longer aligned with the connecting channel 207, and the granular fertilizer in the connecting channel 207 will enter the discharge chamber 204; The discharging slider 205 is fixedly connected with a U-shaped rod 202, the other end of the U-shaped rod 202 is located outside the discharging barrel 200, and the other end of the U-shaped rod 202 is installed with a protruding column 203. The U-shaped rod 202 located in the discharging barrel 200 is sleeved with a connecting spring 206. The connecting spring 206 is used to continuously compress the discharging slider 205 when it continuously slides in the discharging cavity 204. When the force pushing the discharging slider 205 to slide suddenly disappears, the elastic reset effect of the connecting spring 206 will push the discharging slider 205 to slide instantly, and the discharging slider 205 can quickly push out the granular fertilizer in the discharging cavity 204, so as to realize the long-distance fertilizer spreading and delivery; In addition, a guide track 201 is provided on the outer wall of the discharge barrel 200, and the guide track 201 is used to guide the moving path of the boss 203, and the boss 203 slides against the guide track 201; Among them, Figure 2 and Figure 3As shown, the outer wall of the circular cover 302 is also fixedly connected to the top of the swing rod 300, the limiting rod 303 and the swing rod 300 are arranged in a colinear manner, and the circular cover 302 is located between the swing rod 300 and the limiting rod 303; the swing rod 300 is provided with a strip hole 301, and the strip hole 301 is sleeved on the protrusion 203. Combined with the process of the guide rod 401 performing a circular motion, the entire working process of the fertilization device of the present invention is described: First, the servo motor 402 is used to drive the outer tooth surface turntable 400 to rotate, and the rotating outer tooth surface turntable 400 drives the push assembly to move. The push-pull assembly is arranged in the push cavity 104, and is used to push the granular fertilizer in the push cavity 104 to the discharge port 107. On the one hand, the set push assembly can avoid the accumulation of fertilizer particles in the fertilizer cavity 103 and the push cavity 104, resulting in the problem of being unable to flow. On the other hand, the set push assembly can push the fertilizer particles to the discharge port 107, which is conducive to the granular fertilizer in the fertilizer cavity 103 and the push cavity 104 to flow out from the discharge port 107; When the outer tooth surface turntable 400 rotates, the guide rod 401 is driven to rotate clockwise. During the clockwise movement of the guide rod 401, it first contacts the limit rod 303 and pushes the swing rod 300 to swing leftward. At this time, the circular cover 302 is pushed to rotate counterclockwise around its axis by a certain angle. At this time, the counterclockwise rotation of the circular cover 302 synchronously drives the measuring roller 600 to rotate counterclockwise by a certain angle, so that the measuring cavity 602 changes from the state of aligning with the discharge port 107 to the state of aligning with the arc. In this process, the quantitative granular fertilizer filled in the measuring chamber 602 is sent to the arc-shaped blanking chamber 106; moreover, when the circular cover 302 rotates counterclockwise around its axis for a certain angle, the swing rod 300 pushes the protruding column 203 to move rightward, that is, the U-shaped rod 202 is pushed to drive the discharging slider 205 to move rightward in the discharging chamber 204, and the connecting spring 206 is gradually compressed, so that the granular fertilizer in the arc-shaped blanking chamber 106 enters the discharging chamber 204; As the guide rod 401 continues to rotate clockwise, the moment the guide rod 401 is separated from the limiting rod 303, the elastic reset action of the connecting spring 206 pushes the swing rod 300, the circular cover 302, and the limiting rod 303 to reset, so that the measuring chamber 602 is restored to the state of being aligned with the discharge port 107. At this time, the fertilizer in the pushing chamber 104 continues to fill the measuring chamber 602 through the discharge port 107; in addition, when the connecting spring 206 is elastically reset, the discharging slider 205 is pushed to accelerate instantaneously in the discharging chamber 204, and the granular fertilizer in the discharging chamber 204 is quickly pushed out, so that the fertilizer can be spread farther and over a wider range; In this way, as the outer tooth surface turntable 400 continues to rotate, a certain amount of granular fertilizer will be periodically and quickly thrown out from the discharge barrel 200. When there is no need to throw the fertilizer, it is only necessary to keep the guide rod 401 disengaged from the limit rod 303. At this time, the blocking plate 2051 will block the connecting channel 207.

[0023] Please continue reading Figure 3 , Figure 8 and Fig. 9 , the measuring chamber 602 is also provided with an adjustable position adjustment block 502, the adjustment block 502 is sleeved on the adjustment screw 501 by a threaded connection, and an adjustment handle 500 is installed at the end of the adjustment screw 501. By manually rotating the adjustment handle 500, the adjustment screw 501 can be rotated a certain number of times, thereby adjusting the position of the adjustment block 502 in the measuring chamber 602, so that the accommodation volume of the measuring chamber 602 for filling granular fertilizer can be adjusted, thereby adjusting the amount of granular fertilizer spread at one time, and the use is flexible; because in the embodiment of the present invention, the two feeding ports 107 correspond to two measuring chambers 602 for filling granular fertilizers, therefore, two adjustment blocks 502 are provided, and the external thread on the adjustment screw 501 is a two-stage structure, and the rotation directions of the two sections of the external thread are opposite, so that when the adjustment screw 501 is rotated, the two adjustment blocks 502 are adjusted to be close to or away from each other, so as to achieve synchronous adjustment of the volume in the two measuring chambers 602.

[0024] like Figure 2 As shown, in another embodiment provided by the present invention, a drone is provided. The drone of the embodiment of the present invention includes a frame 700 and four sets of wing propellers 701 installed at the four corners of the frame 700; accordingly, the frame 700 of the present invention is also installed with the fertilization device provided in the above embodiment. During specific implementation, the fertilizer box 100 included in the fertilization device provided in the above embodiment is fixedly installed on the frame 700 by bolts, and the specific installation structure is not limited.

[0025] The UAV equipped with the spreading and fertilizing device can fly in the fields as needed, and utilize the spreading and fertilizing device to spread the granular fertilizer, making the fertilization process of the granular fertilizer more convenient, and the fertilization range is wide, the fertilization is uniform, and the fertilization effect is good; wherein, in the spreading and fertilizing device, when utilizing the elastic reset of the connecting spring 206, the discharging slider 205 is pushed to accelerate instantaneously in the discharging chamber 204, and the granular fertilizer in the discharging chamber 204 is quickly pushed out, which can make the fertilizer be spread farther and over a wider range, and can reduce the influence of the UAV airflow on the fertilization process, because part of the granular fertilizer can quickly leave the airflow influence area.

[0026] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A granular fertilizer spreading and fertilizing device, characterized in that: include: A fertilizer box (100), wherein the lower inner cavity of the fertilizer box (100) has a base (108), the base (108) has a cylindrical cavity (105) and a material pushing cavity (104) located above the cylindrical cavity (105), and a material discharge port (107) is provided on the partition between the material pushing cavity (104) and the cylindrical cavity (105); the base (108) also has an arc-shaped material discharge cavity (106) communicating with the cylindrical cavity (105); A measuring roller (600), the measuring roller (600) being coaxially rotatably arranged in the cylindrical cavity (105), a measuring cavity (602) being provided on the outer circumference of the measuring roller (600), and a support shaft (601) being coaxially fixedly mounted on the measuring roller (600); A limiting rod (303), a circular cover (302) is fixedly mounted on the bottom end of the limiting rod (303), and the circular cover (302) is rotatably arranged on the outer wall of the fertilizer box (100); the circular cover (302) is coaxially linked to the support shaft (601); A material pushing assembly, wherein the push-pull assembly is arranged in the material pushing cavity (104), the material pushing assembly comprises an outer tooth surface rotating disk (400), a guide rod (401) is fixedly mounted on one side of the surface of the outer tooth surface rotating disk (400), and when the limit rod (303) is in a vertical state, the top end of the limit rod (303) is located at three quarters of the height of the outer tooth surface rotating disk (400); A discharge barrel (200) is provided with a discharge chamber (204) inside the discharge barrel (200), and the discharge chamber (204) is communicated with the connecting channel (207).

2. The granular fertilizer spreading and fertilizing device according to claim 1, characterized in that: The external tooth surface rotating disk (400) is coaxially fixedly mounted on the end of a pushing shaft (403); the end of the pushing shaft (403) rotates and extends to the outside of the fertilizer box (100); the pushing shaft (403) is coaxially rotatably arranged inside a pushing cavity (104); and a spiral blade (404) is mounted on the pushing shaft (403) located inside the pushing cavity (104).

3. The granular fertilizer spreading and fertilizing device according to claim 2, characterized in that: The pushing assembly further comprises a servo motor (402), the servo motor (402) being fixedly mounted on the fertilizer box (100), and the output shaft of the servo motor (402) and the external tooth surface rotating disk (400) being transmission-connected via a sprocket.

4. The granular fertilizer spreading and fertilizing device according to claim 3, characterized in that: A driven gear (306) is coaxially fixedly disposed at the end of a support shaft (601) that is rotatably extended to the outside of the fertilizer box (100); the circular cover (302) is coaxially disposed with the driven gear (306); a linkage gear (305) that meshes with the driven gear (306) is rotatably disposed on the outer wall of the fertilizer box (100); and an inner gear ring (304) that meshes with the linkage gear (305) is disposed on the inner ring of the circular cover (302).

5. The granular fertilizer spreading and fertilizing device according to claim 4, characterized in that: A discharging slider (205) is slidably disposed in the discharging cavity (204), and a blocking plate (2051) is integrally formed on the top of the discharging slider (205); A U-shaped rod (202) is fixedly connected to the discharge slider (205), the other end of the U-shaped rod (202) is located outside the discharge barrel (200), a boss (203) is installed on the other end of the U-shaped rod (202), and a connecting spring (206) is sleeved on the U-shaped rod (202) located inside the discharge barrel (200); The outer wall of the circular cover (302) is also fixedly connected to the top of the swing rod (300); the limiting rod (303) and the swing rod (300) are arranged in a colinear manner; the circular cover (302) is located between the swing rod (300) and the limiting rod (303); a strip hole (301) is provided on the swing rod (300), and the strip hole (301) is sleeved on the convex column (203).

6. The granular fertilizer spreading and fertilizing device according to claim 5, characterized in that: The measuring cavity (602) is further provided with an adjustable position adjustment block (502), the adjustment block (502) being sleeved on the adjustment screw rod (501) by means of a threaded connection, and an adjustment handle (500) is installed at the end of the adjustment screw rod (501).

7. A drone, characterized in that: The invention comprises a frame (700) and four sets of wing propellers (701) installed at four corners of the frame (700); the frame (700) is also installed with a granular fertilizer spreading and fertilizing device as claimed in any one of claims 1 to 6, and the granular fertilizer spreading and fertilizing device comprises a fertilizer box (100) fixedly installed on the frame (700) by bolts.

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