Sowing device, sowing device and agricultural unmanned aerial vehicle

Abstract

The utility model provides a sowing device, a sowing device and an agricultural unmanned aerial vehicle, and relates to the technical field of agricultural machinery. The sowing device comprises a shell, a speed reducer, a throwing disc and a driving piece. The speed reducer is arranged in the shell. The driving part comprises a machine shell and a main shaft capable of rotating relative to the machine shell, the machine shell is connected with the shell, and the main shaft extends into the shell and is in transmission connection with the speed reducer. The projecting disc is in transmission connection with the speed reducer. According to the sowing device, due to the fact that the speed reducer is arranged in the shell, the length of a cantilever structure of the whole sowing device is shortened, the length of a cantilever is shorter, and the running stability of the sowing device is better. And the problems of loosening of the driving part, structural distortion and the like of the sowing device during high-speed operation are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and in particular to a spreader, a spreading device and an agricultural drone. Background Art

[0002] The existing spreader structure includes a motor, a reducer, and a spreader housing. The motor is connected to the reducer, and the reducer's end cap is connected to the spreader housing, thereby securing the motor. In this structure, both the reducer and the motor are located outside the spreader housing. From the overall structure of the spreader, both the reducer and the motor are cantilevered, meaning the spreader's cantilever length is the sum of the reducer and motor lengths. The longer the cantilever, the more likely the motor will loosen and the motor's mountings will twist when the spreader is operating at high speeds, affecting the reliability and stability of the spreader's operation. Utility Model Content

[0003] The objectives of the present invention include, for example, providing a spreader, a spreading device and an agricultural drone, which can shorten the overall cantilever length of the spreader, thereby improving the stability and reliability of the spreader during high-speed operation.

[0004] The embodiment of the present utility model can be implemented as follows:

[0005] In a first aspect, the present invention provides a spreader comprising:

[0006] case;

[0007] A reducer, the reducer being arranged in the housing;

[0008] A spinning disc, connected to the output shaft of the reducer, for spreading the material;

[0009] The driving member includes a casing and a main shaft that can rotate relative to the casing. The casing is connected to the shell. The main shaft extends into the shell and is transmission-connected to the reducer.

[0010] In an optional embodiment, the shell includes an integrally formed first section and a second section; the first section covers the reducer, and the driving member is fixedly connected to the first section; the second section covers the outer periphery of the first section and extends toward the side of the first section away from the driving member.

[0011] In an optional embodiment, the second section is formed on the periphery of the first section by secondary injection molding.

[0012] In an optional embodiment, a first mounting hole is provided on an end surface of the first subsection away from the second subsection; the first mounting hole is used for mounting a housing of the driving member.

[0013] In an optional embodiment, the spreader further includes a first bearing and a second bearing; the reducer includes an output shaft and a gear ring assembly, the power input end of the gear ring assembly is connected to the main shaft, and the power output end is connected to the output shaft;

[0014] The first bearing and the second bearing are spaced apart along the axial direction of the output shaft and are respectively arranged on both sides of the gear ring assembly.

[0015] In an optional embodiment, the spreader further includes an elastic component; one side of the elastic component is connected to the output shaft of the reducer, and the other side is transmission-connected to the spinner.

[0016] In an optional embodiment, the elastic component includes an elastic member and a swing arm; the swing arm is respectively connected to the spinner and the output shaft of the reducer, one end of the elastic member is rotationally connected to the swing arm, and the other end is connected to the shell.

[0017] In an optional embodiment, a partition is provided between the spinner and the elastic component, and the partition is connected to the housing.

[0018] In an optional embodiment, the partition is provided with an avoidance hole for connecting the spinner disc and the output shaft of the reducer, and a sealing ring is provided at the avoidance hole.

[0019] In a second aspect, the utility model provides a spreading device, comprising a material box, a conveying assembly and a spreader as described in any one of the aforementioned embodiments, wherein the feed end of the conveying assembly is connected to the material box, and the discharge end of the conveying assembly is connected to the spreader.

[0020] In a third aspect, the present invention provides an agricultural drone, comprising a drone and a sowing device as described in the aforementioned embodiment, wherein the sowing device is mounted on the drone.

[0021] The beneficial effects of the embodiments of the present invention include, for example:

[0022] The spreader provided by the present invention incorporates a reducer within the spreader housing. This eliminates the reducer from the cantilever structure; only the drive element is part of the cantilever. This reduces the spreader's cantilever length from the sum of the reducer and drive element lengths to the drive element length, significantly shortening the spreader's cantilever length. This prevents loosening and twisting of the drive element during high-speed operation, improving impact resistance and enhancing the spreader's operational stability and reliability. Furthermore, locating the reducer within the spreader housing results in a more compact structure and optimized spatial layout.

[0023] The spreading device provided by the present invention, employing the aforementioned spreader, has a more compact structure. Furthermore, the spreading device is more reliable and stable during high-speed operation. Furthermore, since the spreader's drive components are prevented from loosening or twisting during high-speed operation, the service life of the spreading device is extended.

[0024] The agricultural drone provided by the embodiment of the utility model adopts the above-mentioned sowing device, has a compact structure, is reliable and durable, and has better structural stability and reliability when running at high speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a spreader from a first perspective provided by an embodiment of the present utility model;

[0027] Figure 2 A schematic structural diagram of a second perspective of a spreader provided by an embodiment of the present utility model;

[0028] Figure 3 A schematic diagram of the disassembled structure of the spreader provided in an embodiment of the utility model;

[0029] Figure 4 A schematic cross-sectional view of a spreader according to an embodiment of the present invention;

[0030] Figure 5 A schematic structural diagram of the housing of the spreader provided by an embodiment of the present utility model from a front perspective;

[0031] Figure 6 A schematic structural diagram of a drive member of a spreader provided in an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of the disassembled structure of the output shaft, elastic component, partition and spinning disc of the spreader provided in an embodiment of the utility model.

[0033] Icons: 100-spreader; 110-housing; 111-first subsection; 112-second subsection; 113-first mounting hole; 114-second mounting hole; 120-reducer; 121-output shaft; 122-gear and ring gear assembly; 123-first bearing; 124-second bearing; 130-driving member; 131-housing; 132-spindle; 133-fixing hole; 140-spindle; 150-elastic assembly; 151-elastic member; 152-swing arm; 154-through hole; 155-transition section; 156-spline; 160-partition; 161-avoidance hole; 162-connecting column; 163-sealing ring; 171-connecting hole; 172-locking piece. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0037] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0038] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0040] Please refer to Figures 1 to 4 This embodiment provides a spreader 100 that can shorten the length of the cantilever structure in the spreader 100, thereby improving the stability and reliability of the spreader 100 during operation.

[0041] The spreader 100 includes a housing 110, a speed reducer 120, a spinning disc 140, and a drive member 130. The speed reducer 120 is disposed within the housing 110. The drive member 130 includes a housing 131 and a main shaft 132 rotatable relative to the housing 131. The housing 131 is connected to the housing 110, and the main shaft 132 extends into the housing 110 and is in transmission connection with the speed reducer 120. The spinning disc 140 is in transmission connection with the speed reducer 120. The spinning disc 140 is used to spread the material. In the spreader 100, the placement of the speed reducer 120 within the housing 110 shortens the cantilever structure length of the entire spreader 100. The length of the drive member 130 becomes the sum of the original speed reducer and drive member lengths. The shorter cantilever length improves the operational stability of the spreader 100. This prevents the drive member 130 from loosening and structural distortion during high-speed operation, thereby improving the spreader's impact resistance. This improves the stability and reliability of the operation of the spreader 100. In addition, the reducer 120 is arranged in the housing 110 of the spreader 100, which makes the structure more compact and the spatial structure layout more optimized.

[0042] The housing 110 includes an integrally formed first section 111 and a second section 112. The first section 111 houses the reducer 120, and the drive member 130 is fixedly connected to the first section 111. The second section 112 covers the outer periphery of the first section 111 and extends toward the side of the first section 111 away from the drive member 130. It will be appreciated that the integral molding of the first section 111 and the second section 112 of the housing 110 combines the existing spreader housing and reducer housing into one, simplifying the structure of the housing 110. Furthermore, this integral molding eliminates the need for assembly of the reducer and spreader housings, streamlining assembly steps and improving production efficiency.

[0043] It should be noted that the first section 111 serves as the housing of the reducer 120 and is completely located within the second section 112. The first section 111 is used to mount the reducer 120. The second section 112 completely covers the outer circumference of the first section 111 and extends radially outward to serve as the housing of the spreader.

[0044] Optionally, the first section 111, which covers the reducer 120, can be made of metal, while the second section 112, which serves as the outer shell of the spreader 100, can be made of plastic. When using one-piece molding, the first section 111 can be formed first, and then the second section 112 can be formed by secondary injection molding outside the first section 111, so that the first section 111 and the second section 112 are integrated.

[0045] Combine Figure 5 and Figure 6 Optionally, a first mounting hole 113 is provided on the end face of the first division 111. The first mounting hole 113 is used to mount the housing 131 of the driving member 130. Since the first division 111 is made of metal material, the structural strength is greater. Connecting the driving member 130 to the first division 111 can improve the reliability of the connection structure. It can be understood that the driving member 130 can be a motor, and the housing 131 of the motor is provided with fixing holes 133. The number of fixing holes 133 is equal to the number of first mounting holes 113. The positions of the fixing holes 133 correspond one-to-one to the positions of the first mounting holes 113. Fasteners such as bolts or rivets can be used to penetrate the first mounting hole 113 and the fixing holes 133 in sequence, thereby achieving a fixed connection between the motor and the housing 110. In this embodiment, during installation, bolts or rivets are inserted into the motor from the first section 111, that is, first into the first mounting hole 113, and then into the fixing hole 133 of the motor, and locked so that the end face of the motor housing 131 and the end face of the first section 111 are tightly attached, thereby fixing the motor.

[0046] Of course, in some other embodiments, the housing of the driving member 130 may also be connected to the second section 112 , which is not specifically limited here.

[0047] Optionally, the spreader 100 further includes a first bearing 123 and a second bearing 124, and the reducer 120 includes an output shaft 121 and a gear ring assembly 122. The power input end of the gear ring assembly 122 is connected to the main shaft 132 of the motor, and the power output end is connected to the output shaft 121. The output shaft 121 is used to connect to the spinner 140 of the spreader 100 to drive the spinner 140 to rotate. In this embodiment, the gear ring assembly 122 includes a gear and a ring gear that mesh with each other, and the ring gear is sleeved on the circumference of the gear. The gear serves as the power input end, and the ring gear serves as the power output end. The gear and the main shaft 132 of the motor are connected by a spline transmission. The ring gear and the output shaft 121 are integrally formed, or separately fixedly connected. When the main shaft 132 of the motor rotates, it drives the gear to rotate, and the gear drives the ring gear and the output shaft 121 to rotate, realizing power transmission and achieving the purpose of deceleration.

[0048] Specifically, the first and second bearings 123, 124 are spaced apart along the axial direction of the output shaft 121 and are located on either side of the gear and ring gear assembly 122. This arrangement provides better support and protection for the output shaft 121, while also ensuring more uniform force distribution and a more stable structure, thereby extending the service life of the output shaft 121. Furthermore, the first and second bearings 123, 124, located on either side of the gear and ring gear assembly 122, serve as the primary load-bearing components, shielding the gears and ring gear from stress, protecting them and preventing heat and fracture in the gear and ring gear teeth, thereby improving structural reliability.

[0049] Optional, spreader 100 also comprises elastic component 150.One side of elastic component 150 is connected with the output shaft 121 of speed reducer 120, and the other side is connected with the transmission of disk 140.Because disk 140 does reciprocating swing in the course of work, promptly constantly does the alternating motion of counterclockwise rotation and clockwise rotation, makes motor need high frequency emergency stop and forward and reverse rotation, and this will increase the power consumption of motor greatly.By elastic component 150 is set, the kinetic energy part that disk 140 rotates can be converted into the elastic potential energy of elastic component 150, because elastic component 150 has the characteristic of releasing elastic potential energy and automatically recovering to the original state.As long as the release frequency of the elastic potential energy of elastic component 150 and the rotation frequency of disk 140 adapt to each other, in the process that elastic component 150 automatically recovers, elastic potential energy just helps the deceleration and the reverse acceleration of disk 140, thereby can reduce the power consumption of motor, reduces motor heating.Be conducive to improving the reliability of motor operation, and prolong the service life of motor.

[0050] Combine Figure 7 Optionally, the elastic component 150 includes an elastic member 151 and a swing arm 152. In this embodiment, there are two elastic members 151, and the two elastic members 151 are symmetrically arranged on both sides of the swing arm 152. The swing arm 152 is respectively connected to the spinneret 140 and the output shaft 121 of the reducer 120. The swing arm 152 is provided with an axial hole (not shown) for mounting the output shaft 121 and a through hole 154 passing through the swing arm 152, and the axis of the axial hole and the axis of the through hole 154 are perpendicular to each other. After the output shaft 121 is inserted into the axial hole, a push rod (not shown) is inserted into each end of the through hole 154, and the two push rods abut against the output shaft 121 from different directions to achieve a fixed connection between the output shaft 121 and the swing arm 152.

[0051] Optionally, one end of the swing arm 152 away from the output shaft 121 is provided with a spline 156, and the swing arm 152 and the disk 140 realize power transmission by the spline 156 to drive the disk 140 to rotate. It is easy to understand that when the motor rotates forward and reverse alternately, the disk 140 can be driven to swing back and forth.

[0052] One end of the elastic member 151 is rotatably connected to the swing arm 152, and the other end is connected to the housing 110. In this embodiment, the two elastic members 151 have the same structure and installation method. The elastic member 151 is a spring or a spring. One end of the spring is hinged to the swing arm 152, and the other end is fixedly connected to the housing 110 via a fixing member such as a bolt.

[0053] It is understandable that the disk 140 will pass through three points during the reciprocating swing process, namely the left limit position, the middle position and the right limit position. One of the elastic members 151 is relatively closer to the left limit position, and the other elastic member 151 is relatively closer to the right limit position.

[0054] When the spinning disc 140 swings from the middle position to the left limit position, the deformation of the left elastic member 151 becomes larger and larger, which is beneficial to the deceleration of the spinning disc 140 during the swinging.

[0055] When the spinning disc 140 swings from the left limit position to the middle position, the left elastic member 151 releases elastic potential energy, which is beneficial to the acceleration of the spinning disc 140 during the swinging.

[0056] When the spinning disc 140 swings from the middle position to the right limit position, the deformation of the right elastic member 151 becomes larger and larger, which is beneficial to the deceleration of the spinning disc 140 during the swinging.

[0057] When the spinning disc 140 swings from the right limit position to the middle position, the right elastic member 151 releases elastic potential energy, which is beneficial to the acceleration of the spinning disc 140 during the swinging.

[0058] It can be seen that the provision of the elastic member 151 is beneficial to the deceleration and reverse acceleration of the spinner 140 during the swinging process, thereby reducing the working power and loss of the motor, reducing the heat generated by the motor, and helping to extend the service life of the motor.

[0059] Optionally, a partition 160 is provided between the spinning disc 140 and the elastic component 150. The partition 160 is used to separate the spinning disc 140 and the elastic component 150 to prevent the material in the partition 160 from entering the elastic component 150, thereby causing the elastic component 150 to become stuck or fail. Optionally, the partition 160 is fixedly connected to the housing 110. A second mounting hole 114 is provided on the side of the housing 110 away from the motor, and a connecting column 162 is provided on the side of the partition 160 close to the elastic component 150. The number of the connecting columns 162 is equal to the number of the second mounting holes 114. The cross-sectional shape of the connecting columns 162 is adapted to the cross-sectional shape of the second mounting holes 114. The connecting columns 162 are inserted into the second mounting holes 114 to achieve a fixed connection between the partition 160 and the housing 110.

[0060] The connection between the partition 160 and the housing 110 includes, but is not limited to, plugging or snapping. In some embodiments, a third mounting hole corresponding to the second mounting hole 114 may be provided on the partition 160, and bolts, etc., may be inserted through the second mounting hole 114 and the third mounting hole to achieve a fixed connection between the partition 160 and the housing 110.

[0061] Optionally, the spreader 100 further includes a sealing ring 163. A clearance hole 161 is provided on the partition 160 for connecting the spinner 140 to the output shaft 121 of the reducer 120. The sealing ring 163 is provided at the clearance hole 161. The sealing ring 163 is installed within the clearance hole 161 of the partition 160 and fits against the wall of the clearance hole 161. Specifically, the elastic assembly 150 includes a swing arm 152. The end of the swing arm 152 away from the output shaft 121 is sequentially provided with a transition section 155 and a spline 156. The spline 156 is connected to the spinner 140. The sealing ring 163 is sleeved on the transition section 155. The inner diameter of the sealing ring 163 is adapted to the outer diameter of the transition section 155. The clearance hole 161 is provided on the partition 160. The inner diameter of the clearance hole 161 is adapted to the outer diameter of the sealing ring 163. Partition 160 is fitted over the outer circumference of sealing ring 163 through clearance hole 161, thereby achieving a sealed connection between partition 160 and swing arm 152. In short, partition 160 is fitted over swing arm 152 through clearance hole 161. Radially, sealing ring 163 is located between partition 160 and swing arm 152. The provision of sealing ring 163 further enhances the sealability of partition 160, preventing small amounts of material or impurities from entering elastic member 151 and thus protecting it. This improves the durability and reliability of elastic member 151, reduces the failure rate of elastic assembly 150, and extends its service life.

[0062] Optionally, to improve the reliability of the connection of the spinning disc 140, interconnected connecting holes 171 are provided on the spinning disc 140, the swing arm 152, and the output shaft 121. A locking member 172 is used to securely connect the spinning disc 140, the swing arm 152, and the output shaft 121 to improve the reliability of the structure. The locking member 172 includes, but is not limited to, a screw, a bolt, or a pin.

[0063] The present invention also provides a spreading device comprising a material bin, a conveying assembly, and the aforementioned spreader 100. The conveying assembly's feed end is connected to the material bin, and its discharge end is connected to the spreader 100. The conveying assembly is used to transport material from the material bin to the spinner 140 of the spreader 100, thereby distributing the material from the spreader 100. The conveying assembly includes, but is not limited to, an auger conveyor.

[0064] The present invention also provides an agricultural drone, comprising a drone and the aforementioned sowing device, wherein the sowing device is mounted on the drone. The drone's flight advantage is utilized to increase the operating range and efficiency of the sowing device.

[0065] In summary, the spreader 100, spreading device, and agricultural drone provided by the embodiments of the present invention have the following beneficial effects, including:

[0066] The spreader 100 provided by the embodiment of the present invention has the reducer 120 disposed within the housing 110 of the spreader 100. That is, the reducer 120 no longer forms a cantilever structure, and only the drive member 130 forms a cantilever structure. This changes the cantilever length of the spreader 100 from the sum of the original reducer length and the drive member length to the length of the drive member 130, greatly shortening the cantilever length of the spreader 100. In this way, when the spreader 100 is operating at high speed, problems such as loosening and twisting of the drive member 130 are avoided. This further improves the stability and reliability of the operation of the spreader 100 and increases its impact resistance. In addition, by disposing the reducer 120 within the housing 110 of the spreader 100, the structure is more compact and the spatial structure layout is more optimized.

[0067] The output shaft 121 of the speed reducer 120 is adopted to directly drive the disk 140 to swing, thus eliminating structures such as the rocker arm connecting rod of the prior art. The power transmission efficiency is higher, which helps reduce the energy consumption of the motor. The structure is simplified, the volume is smaller, and the weight is lighter. The first bearing 123 and the second bearing 124 are respectively located on both sides of the gear ring assembly 122, which better support and protect the output shaft 121, and avoid the gear ring assembly 122 from being stressed, thereby extending the service life of the gear ring assembly 122 and improving the reliability of the speed reducer 120. The elastic member 151 is provided to help the deceleration and reverse acceleration during the swinging process of the disk 140, further reducing the power consumption of the motor, reducing the heat generation of the motor and extending the service life of the motor. The partition plate 160 and the sealing ring 163 are provided to help prevent the material in the disk 140 from entering the elastic member 151, thereby improving the reliability of the elastic member 151 and extending the service life of the elastic member 151.

[0068] The spreading device provided by the present embodiment utilizes the aforementioned spreader 100, resulting in a more compact structure. Furthermore, the spreading device exhibits greater structural reliability and stability during high-speed operation, improving impact resistance. Furthermore, by preventing the drive member 130 of the spreader 100 from loosening or twisting during high-speed operation, the service life of the spreading device is extended.

[0069] The agricultural drone provided by the embodiment of the utility model adopts the above-mentioned sowing device, has a compact structure, is reliable and durable, has a wide sowing range, and has high sowing efficiency. The structural stability and reliability are better when running at high speed.

[0070] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A spreader, characterized in that: include: Housing (110); a reducer (120), the reducer (120) being disposed in the housing (110); a spinning disc (140), the spinning disc (140) being connected to the output shaft of the reducer (120) and being used for spreading the material; A driving member (130) includes a housing (131) and a main shaft (132) rotatable relative to the housing (131); the housing (131) is connected to the housing (110); the main shaft (132) extends into the housing (110) and is transmission-connected to the reducer (120).

2. The spreader according to claim 1, characterized in that The housing (110) comprises an integrally formed first section (111) and a second section (112); the first section (111) covers the reducer (120), and the driving member (130) is fixedly connected to the first section (111); the second section (112) covers the outer periphery of the first section (111) and extends toward a side of the first section (111) away from the driving member (130).

3. The spreader according to claim 2, characterized in that The first section (111) serves as a housing of the reducer (120), and the second section (112) is formed on the outer periphery of the first section (111) by secondary injection molding.

4. The spreader according to claim 2, characterized in that A first mounting hole (113) is provided on the end surface of the first section (111) away from the second section (112); the first mounting hole (113) is used for mounting the housing (131) of the driving member (130).

5. The spreader according to claim 1, characterized in that The spreader further comprises a first bearing (123) and a second bearing (124); the reducer (120) comprises an output shaft (121) and a gear ring assembly (122); a power input end of the gear ring assembly (122) is connected to the main shaft (132), and a power output end is connected to the output shaft (121); The first bearing (123) and the second bearing (124) are spaced apart along the axial direction of the output shaft (121) and are respectively arranged on both sides of the gear ring assembly (122).

6. The spreader according to claim 1, characterized in that The spreader further comprises an elastic component (150); one side of the elastic component (150) is connected to the output shaft (121) of the reducer (120), and the other side is transmission-connected to the spinning disc (140).

7. The spreader according to claim 6, characterized in that The elastic component (150) comprises an elastic member (151) and a swing arm (152); the swing arm (152) is respectively connected to the spinner (140) and the output shaft (121) of the reducer (120); one end of the elastic member (151) is rotationally connected to the swing arm (152), and the other end is connected to the housing (110).

8. The spreader according to claim 6, characterized in that A partition (160) is provided between the spinner (140) and the elastic component (150), and the partition (160) is connected to the housing (110).

9. The spreader according to claim 8, characterized in that The partition (160) is provided with an avoidance hole (161) for connecting the spinner (140) and the output shaft (121) of the reducer (120), and a sealing ring (163) is provided at the avoidance hole (161).

10. A spreading device, characterized in that: The invention comprises a material box, a conveying assembly and a spreader according to any one of claims 1 to 9, wherein an inlet end of the conveying assembly is connected to the material box, and an outlet end of the conveying assembly is connected to the spreader.

11. An agricultural drone, characterized in that: It comprises a drone and the spreading device according to claim 10, wherein the spreading device is carried on the drone.

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