Disc spreader, spreading device and unmanned aerial vehicle

Abstract

The embodiment of the application provides a disc spreading device, a spreading device and a UAV, and relates to the technical field of spreading. The disc spreading device comprises a mounting shell, a disc and a connecting rod mechanism. The disc is swingably mounted on the mounting shell, and is used for contacting with material in a swinging process to spread the material outward. The connecting rod mechanism comprises a first connecting rod, an intermediate connecting rod, a second connecting rod and a counterweight. The second connecting rod is connected with the disc. One end of the intermediate connecting rod is rotatably connected with the first connecting rod, and the other end is rotatably connected with the second connecting rod. The counterweight is connected to one end of the first connecting rod away from the intermediate connecting rod. In the case that the first connecting rod rotates, the first connecting rod can drive the second connecting rod to swing through the intermediate connecting rod, so that the second connecting rod drives the disc to swing back and forth. The disc spreading device only needs to swing the disc to realize the spreading of the material, and does not need to set two spreading components arranged side by side, thereby reducing the cost.

Description

Technical Field

[0001] This invention relates to the field of seeding technology, and more specifically, to a disc seeder, seeding device, and drone. Background Technology

[0002] Agricultural drones are developing rapidly, and their payload capacity is constantly increasing, enabling them to be applied to more and more aspects of field agricultural production. In the field management of field crops, drones are not only used for spraying liquid pesticides, but also for sowing seeds, powders, solid fertilizers and other granules.

[0003] To enable drones to spread seeds, powders, solid fertilizers, and other granules, a spreading device is mounted on the drone. However, in order to reduce the number of operational flights, the spreading components in the existing technology need to be set to have a large spreading width. In order to have a large spreading width, the existing spreading devices are set with two spreading components side by side. However, the method of spreading with two spreading components side by side has the disadvantage of high cost. Summary of the Invention

[0004] This invention provides a disc spreader, a spreading device, and a drone, which can throw materials out from a left-right swinging direction, eliminating the need for two side-by-side spreading components and reducing costs.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a disc spreader, comprising:

[0007] Mounting housing;

[0008] A slinger, oscillatingly mounted on the mounting housing, the slinger being used to contact material during oscillation to spread the material outwards; and

[0009] A linkage mechanism, comprising a first link, an intermediate link, a second link, and a counterweight, wherein the second link is connected to the swing plate, one end of the intermediate link is rotatably connected to the first link, and the other end is rotatably connected to the second link, and the counterweight is connected to the end of the first link away from the intermediate link;

[0010] When the first link rotates, the first link can drive the second link to swing through the intermediate link, thereby the second link drives the swivel disc to swing back and forth.

[0011] In an optional embodiment, the swivel spreader further includes a first buffer assembly disposed on the mounting housing, wherein the swivel spreader impacts the first buffer assembly during the swivel process.

[0012] In an optional embodiment, the swivel spreader further includes a second buffer assembly disposed on the mounting housing. The second buffer assembly and the first buffer assembly are spaced apart. During the swivel of the swivel disc to both sides, the swivel disc is used to strike the first buffer assembly and the second buffer assembly respectively.

[0013] In an optional embodiment, the first buffer assembly includes a buffer section, an elastic element, and a mounting bracket. The buffer section is connected to the mounting bracket via the elastic element, and the mounting bracket is mounted on the mounting housing. During the swinging process, the swing disc impacts the buffer section to compress the elastic element.

[0014] In an optional embodiment, the first buffer assembly further includes a guide rod, the elastic element being a spring, the guide rod being connected to the buffer portion, the guide rod being slidably connected to the mounting bracket, and the spring being sleeved on the guide rod.

[0015] In an optional embodiment, the first buffer assembly further includes a retaining ring disposed at the end of the guide rod away from the buffer portion.

[0016] In an optional embodiment, the slinging disc includes a slinging disc body, a block, and a plurality of blades. The slinging disc body is swayably mounted on the mounting housing. The plurality of blades are spaced apart on one side of the swaying center of the slinging disc body, and the block is located on the other side of the swaying center of the slinging disc body. The blades are used to contact the material to spread the material outward.

[0017] During the swinging process of the main body of the swivel disc, the block is used to impact the first buffer component.

[0018] In an optional embodiment, the disc spreader further includes a drive component, the linkage mechanism is disposed in the mounting housing, the first linkage is used to connect with the drive component, and the drive component is used to drive the first linkage to rotate.

[0019] In an optional implementation, the driving element is a motor.

[0020] In an alternative embodiment, the end of the second link away from the intermediate link is rotatably mounted on the mounting housing.

[0021] In an optional embodiment, the linkage mechanism further includes a first buffer sleeve, and the end of the intermediate link away from the first link has a first collar, the first buffer sleeve being disposed between the end pivot of the second link and the first collar.

[0022] In an optional embodiment, the linkage mechanism further includes a second buffer sleeve, and the mounting housing is provided with a second collar. The second buffer sleeve is disposed between the end shaft of the second link away from the intermediate link and the second collar.

[0023] Secondly, the present invention provides a seeding device, including a feeding mechanism and a disc seeder as described in any of the foregoing embodiments, wherein the feeding mechanism is installed on the disc seeder.

[0024] Thirdly, the present invention provides a drone including the seeding device described in the foregoing embodiments.

[0025] The beneficial effects of the disc seeder, seeding device, and drone of the present invention include, for example:

[0026] This invention provides a spinning disc spreader, which includes a mounting housing, a spinning disc, and a linkage mechanism. The spinning disc is oscillatingly mounted on the mounting housing and is used to contact the material during oscillation to spread the material outward. The linkage mechanism includes a first link, a middle link, a second link, and a counterweight. The second link is connected to the spinning disc. One end of the middle link is rotatably connected to the first link, and the other end is rotatably connected to the second link. The counterweight is connected to the end of the first link away from the middle link. When the first link rotates, it can drive the second link to oscillate through the middle link, thereby causing the second link to drive the spinning disc to oscillate back and forth. This spinning disc spreader only needs to oscillate the spinning disc to achieve material spreading, eliminating the need for two parallel spreading components and reducing costs.

[0027] The present invention provides a seeding device, which includes a feeding mechanism and a disc seeder according to any of the foregoing embodiments. The feeding mechanism is installed on the disc seeder, and the seeding device has all the functions of the disc seeder.

[0028] The present invention provides a drone that includes the seeding device of the aforementioned embodiments, and the drone has all the functions of the seeding device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the seeding device provided in an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of the seeding device provided in an embodiment of the present invention;

[0032] Figure 3 This is a first schematic diagram of the structure of the disc spreader provided in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of a first buffer component provided in an embodiment of the present invention;

[0034] Figure 5 This is a second schematic diagram of the structure of the disc spreader provided in an embodiment of the present invention.

[0035] Icons: 1000-Disc spreader; 100-Mounting housing; 200-Disc spreader; 210-Disc spreader body; 220-Block; 230-Blade; 300-First buffer assembly; 310-Buffer section; 320-Elastic element; 330-Mounting support; 340-Guide rod; 350-Snap ring; 400-Second buffer assembly; 510-Driver; 520-Linkage mechanism; 521-First link; 522-Intermediate link; 523-Second link; 524-Counterweight; 525-First buffer sleeve; 526-Second buffer sleeve; 527-First collar; 600-Second collar; 2000-Feeding mechanism; 2100-Auger; A-Swing center. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0040] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0041] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0042] As mentioned in the background section, agricultural drones are developing rapidly, and their payload capacity is constantly increasing, enabling them to be applied to more and more aspects of field agricultural production. In the field management of field crops, drones are not only used for spraying liquid pesticides, but also for sowing seeds, powders, solid fertilizers, and other granules.

[0043] To enable drones to spread seeds, powders, solid fertilizers, and other granules, a spreading device is mounted on the drone. However, in order to reduce the number of operational flights, the spreading components in the existing technology need to be set to have a large spreading width. In order to achieve a large spreading width, the existing spreading devices are set with two spreading components side by side. However, the method of setting two spreading components side by side (requiring two sets of augers and two motors to drive the spinning disc) has the disadvantage of high cost.

[0044] In view of this, please refer to Figures 1-5 The disc spreader 1000 and spreading device provided in the embodiments of the present invention can solve this problem, and will be described in detail below.

[0045] Please refer to Figure 1 and Figure 2 An embodiment of the present invention provides a drone, which includes a fuselage (not shown) and a seeding device. The seeding device is installed on the fuselage. Specifically, the seeding device includes a feeding mechanism 2000 and a disc seeder 1000. The feeding mechanism 2000 is installed on the disc seeder 1000.

[0046] Specifically, the feeding mechanism 2000 is used to feed material to the disc spreader 1000, which is used to spread the material outward.

[0047] Here, the feeding mechanism 2000 specifically uses the method of driving the auger 2100 to rotate to feed materials. The auger 2100 is rotatably mounted on the housing of the feeding mechanism 2000. The housing of the feeding mechanism 2000 is mounted on the fuselage of the UAV so as to carry the seeding device for flight.

[0048] The housing of the feeding mechanism 2000 can be understood as a main frame with a feeding inlet, through which material is fed to the auger.

[0049] Please refer to Figure 3 The spinning disc spreader 1000 includes a mounting housing 100, a spinning disc 200, and a linkage mechanism 520. The linkage mechanism 520 includes a first link 521, an intermediate link 522, a second link 523, and a counterweight 524. The second link 523 is connected to the spinning disc 200. One end of the intermediate link 522 is rotatably connected to the first link 521, and the other end is rotatably connected to the second link 523. The counterweight 524 is connected to the end of the first link away from the intermediate link 522. When the first link 521 rotates, the first link 521 can drive the second link 523 to swing through the intermediate link 522, thereby causing the second link 523 to drive the spinning disc 200 to swing back and forth.

[0050] This disc spreader can spread materials simply by swinging the disc 200, eliminating the need for two parallel spreading components, thus reducing costs. The counterweight 524 can reduce the vibration caused by the eccentricity of the first connecting rod 521.

[0051] Meanwhile, the disc spreader 1000 also includes a first buffer assembly 300. The disc 200 is oscillatingly mounted on the mounting housing 100. The disc 200 is used to contact the material during the oscillation process to spread the material outward. The first buffer assembly 300 is disposed in the mounting housing 100. During the oscillation process, the disc 200 impacts the first buffer assembly 300. At the same time, the mounting housing 100 is connected to the housing of the feeding mechanism 2000.

[0052] It can be seen that this spreading device can spread materials simply by swinging the disc, eliminating the need for two side-by-side spreading components and reducing costs.

[0053] That is, only one set of auger feeding and one drive component are needed to drive the oscillating disc to spread the material, thus reducing costs.

[0054] It should be noted that, in Figure 3 The image shows only a portion of the structure of the mounting housing 100.

[0055] Because the 1000 disc spreader can throw materials out in a left-right swinging direction.

[0056] Meanwhile, since the swivel disc 200 needs to change direction quickly, the resulting impact vibration is relatively large. Therefore, a first buffer component 300 is provided on the mounting housing 100. During the swinging process, the swivel disc 200 can be buffered by the first buffer component 300. Therefore, the first buffer component 300 can play a shock-absorbing role for the entire swivel disc spreader 1000.

[0057] The materials mentioned here can be understood as granules such as seeds, powders, and solid fertilizers.

[0058] In this embodiment, the drone can be an agricultural drone equipped with a sowing device, which can sow seeds, powders, solid fertilizers, and other granules.

[0059] Furthermore, the drone can be a dual-rotor drone, a single-rotor drone, or a multi-rotor drone, such as a quadcopter drone, a hexacopter drone, an octacopter drone, etc.

[0060] Drones can operate automatically according to preset paths, flight speeds, attitudes, etc., or be manually controlled by operators.

[0061] In addition, in order to facilitate buffering during the swinging of the spinning disc 200 to both sides, the spinning disc spreader 1000 also includes a second buffer component 400. The second buffer component 400 is disposed in the mounting housing 100. The second buffer component 400 and the first buffer component 300 are distributed at intervals and located on both sides of the spinning disc body 210 (described in detail below) of the spinning disc 200. During the swinging of the spinning disc 200 to both sides, the spinning disc 200 is used to impact the first buffer component 300 and the second buffer component 400 respectively.

[0062] To improve shock absorption, please refer to the following for details. Figure 4 In this embodiment, the first buffer assembly 300 includes a buffer portion 310, an elastic element 320, and a mounting support 330. The buffer portion 310 is connected to the mounting support 330 through the elastic element 320. When the elastic element 320 is compressed, the buffer portion 310 can approach the mounting support 330. The mounting support 330 is mounted on the mounting housing 100. During the swinging process, the swing disc 200 is used to impact the buffer portion 310 to compress the elastic element 320.

[0063] The buffer portion 310 can be made of an elastic material, such as rubber.

[0064] The first buffer assembly 300 also includes a guide rod 340, an elastic element 320 which is a spring, the guide rod 340 and the buffer part 310 are connected, the guide rod 340 is slidably connected to the mounting support 330, and the spring is sleeved on the guide rod 340.

[0065] Specifically, the mounting bracket 330 is provided with a sliding through hole, and the guide rod 340 is slidably inserted through the sliding through hole.

[0066] Meanwhile, in order to prevent the guide rod 340 from detaching from the mounting bracket 330, the first buffer assembly 300 also includes a retaining ring 350, which is disposed at the end of the guide rod 340 away from the buffer part 310.

[0067] It should be noted that the structure and principle of the second buffer component 400 can be referenced from the first buffer component 300.

[0068] During the swinging process of the swivel disc 200, when the block 220 of the swivel disc 200 (described in detail below) hits the first buffer assembly 300 or the second buffer assembly 400, the guide rod 340 is pushed to move through the buffer part 310, the spring is compressed, and the swing of the block 220 is buffered. After the block 220 is separated from the buffer part 310, the buffer part 310 and the guide rod 340 are reset under the action of the spring.

[0069] Specifically, in this embodiment, the slinging disc 200 includes a slinging disc body 210, a block 220, and a plurality of blades 230. The slinging disc body 210 is swayably mounted on the mounting housing 100. The plurality of blades 230 are spaced apart on one side of the swing center A of the slinging disc body 210, and the block 220 is located on the other side of the swing center A of the slinging disc body 210. The blades 230 are used to contact the material to spread the material outward.

[0070] Multiple blades 230 form a material drop space. When the material enters the mounting housing 100 of the swivel spreader 100 from the feeding port of the feeding mechanism 2000, it falls onto the blades 230. During the swinging of the swivel disc 200, the blades 230 pat the material and throw it out, thereby achieving a larger spreading width.

[0071] During the swinging process, the block 220 is used to impact the buffer part 310 of the first buffer assembly 300 and the buffer part 310 of the second buffer assembly 400.

[0072] Since the buffer part 310 that the block 220 collides with is made of a flexible material such as rubber, the block 220 can be made of metal as a counterweight. Of course, the block 220 can also be made of a flexible material.

[0073] In addition, the block 220 can also be used as a counterweight. Since the blade 230 is located below the swing center A, setting a counterweight on the side of the main body 210 away from the blade 230 can raise the center of gravity of the swing plate 200, thereby improving the swing stability of the swing plate 200.

[0074] Please refer to Figure 5 and combined Figure 2 It should be noted that, in Figure 5 The image shows only a portion of the structure of the mounting housing 100. Here, the portion of the structure of the mounting housing 100 can be understood as a plate structure.

[0075] Specifically, in order to achieve continuous reciprocating oscillation of the spinning disc 200, the spinning disc spreader 1000 also includes a drive component 510, which can be a motor. The linkage mechanism 520 is disposed in the mounting housing 100. The drive component 510 is connected to the linkage mechanism 520, and the linkage mechanism 520 is connected to the spinning disc 200. The drive component 510 is used to drive the linkage mechanism 520 to move.

[0076] In this embodiment, the first link 521 is connected to the drive member 510, and the drive member 510 is used to drive the first link 521 to rotate.

[0077] The end of the second link 523 away from the intermediate link 522 is rotatably mounted on the mounting housing 100.

[0078] In this embodiment, the linkage mechanism 520 can be understood as a crank-rocker mechanism.

[0079] When the driving component 510 drives the linkage mechanism 520 to move, the swing of the second link 523 in turn drives the main body 210 of the swivel disc 200 to swing back and forth.

[0080] Specifically, a portion of the mounting housing 100 has a through hole, and the end of the second connecting rod 523 away from the intermediate connecting rod 522 passes through the through hole and connects to the swing plate body 210 of the swing plate 200. It is easy to understand that in this embodiment, the connecting rod mechanism 520 and the swing plate 200 are located on opposite sides of the portion of the mounting housing 100.

[0081] In addition, in this embodiment, the linkage mechanism 520 also includes a first buffer sleeve 525, and the end of the intermediate link 522 away from the first link 521 has a first collar 527. The first buffer sleeve 525 is disposed between the end pivot of the second link 523 and the first collar 527.

[0082] Meanwhile, the linkage mechanism 520 also includes a second buffer sleeve 526, and the mounting housing 100 is provided with a second collar 600. The second buffer sleeve 526 is located between the end shaft of the second connecting rod 523 away from the intermediate connecting rod 522 and the second collar 600.

[0083] The first buffer sleeve 525 and the second buffer sleeve 526 can reduce vibration of the linkage mechanism 520. Generally speaking, the first buffer sleeve 525 and the second buffer sleeve 526 are made of rubber elastic material.

[0084] According to the drone provided in this embodiment, the working principle of the drone is as follows:

[0085] During the flight of the drone, the auger 2100 of the feeding mechanism 2000 rotates and feeds material to the slinger spreader 1000. The material enters the mounting housing 100 and comes into contact with the blades 230 of the slinger 200. As the driving component 510 drives the linkage mechanism 520 to move, the slinger 200 is driven to swing back and forth, thereby throwing out the material and realizing the spreading of the material.

[0086] In summary, the disc spreader includes a mounting housing 100, a disc 200, and a linkage mechanism 520. The disc 200 is oscillatingly mounted on the mounting housing 100 and is used to contact the material during oscillation to spread the material outward. The linkage mechanism 520 includes a first link 521, an intermediate link 522, a second link 523, and a counterweight 524. The second link 523 is connected to the disc 200, and one end of the intermediate link 522 is rotatably connected to the first link 521. The other end is rotatably connected to the second connecting rod 523. The counterweight 524 is connected to the end of the first connecting rod away from the middle connecting rod 522. When the first connecting rod 521 rotates, the first connecting rod 521 can drive the second connecting rod 523 to swing through the middle connecting rod 522. Thus, the second connecting rod 523 drives the spinning disc 200 to swing back and forth. This spinning disc spreader can spread materials by swinging the spinning disc 200, without the need to set up two side by side spreading components, thus reducing costs.

[0087] The spreading device includes a feeding mechanism 2000 and a disc spreader 1000 of any of the aforementioned embodiments. The feeding mechanism 2000 is installed on the disc spreader 1000, and the spreading device has all the functions of the disc spreader 1000.

[0088] The drone includes a fuselage and a seeding device as described in the above embodiments. The seeding device is mounted on the fuselage, and the drone has all the functions of the seeding device.

[0089] 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 variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A disc seeder, characterized in that, include: Mounting housing (100); A swivel disc (200) includes a swivel disc body (210), a block (220), and multiple blades (230). The swivel disc body (210) is swivelly mounted on the mounting housing (100). The multiple blades (230) are spaced apart on one side of the swivel center (A) of the swivel disc body (210), and the block (220) is located on the other side of the swivel center (A) of the swivel disc body (210). The blades (230) are used to contact the material during the swivel process to spread the material outward. A linkage mechanism (520) includes a first link (521), an intermediate link (522), a second link (523), and a counterweight (524). The second link (523) is connected to the swivel disc (200). One end of the intermediate link (522) is rotatably connected to the first link (521), and the other end is rotatably connected to the second link (523). The counterweight (524) is connected to the end of the first link (521) away from the intermediate link (522). A driving member (510) is provided, wherein the first connecting rod (521) is connected to the driving member (510), and the driving member (510) is used to drive the first connecting rod (521) to rotate. When the first connecting rod (521) rotates, the first connecting rod (521) can drive the second connecting rod (523) to swing through the intermediate connecting rod (522), thereby the second connecting rod (523) drives the slinging disc (200) to swing back and forth, so that the slinging disc (200) spreads the material outward from the left and right swinging direction.

2. The disc spreader according to claim 1, characterized in that, The swivel spreader also includes a first buffer assembly (300), which is disposed on the mounting housing (100). During the swinging process, the swivel disc (200) impacts the first buffer assembly (300).

3. The disc spreader according to claim 2, characterized in that, The swivel spreader further includes a second buffer assembly (400), which is disposed on the mounting housing (100). The second buffer assembly (400) and the first buffer assembly (300) are distributed at intervals. During the swinging process of the swivel disc (200) towards both sides, the swivel disc (200) is used to strike the first buffer assembly (300) and the second buffer assembly (400) respectively.

4. The disc spreader according to claim 2, characterized in that, The first buffer assembly (300) includes a buffer part (310), an elastic element (320), and a mounting bracket (330). The buffer part (310) is connected to the mounting bracket (330) through the elastic element (320). The mounting bracket (330) is mounted on the mounting housing (100). During the swinging process, the swing disc (200) is used to impact the buffer part (310) to compress the elastic element (320).

5. The disc spreader according to claim 4, characterized in that, The first buffer assembly (300) further includes a guide rod (340), the elastic element (320) is a spring, the guide rod (340) is connected to the buffer part (310), the guide rod (340) is slidably connected to the mounting support (330), and the spring is sleeved on the guide rod (340).

6. The disc spreader according to claim 5, characterized in that, The first buffer assembly (300) further includes a retaining ring (350) disposed at one end of the guide rod (340) away from the buffer portion (310).

7. The disc spreader according to claim 2, characterized in that, During the swinging process of the main body (210), the block (220) is used to impact the first buffer assembly (300).

8. The disc spreader according to claim 1, characterized in that, The linkage mechanism (520) is disposed on the mounting housing (100).

9. The disc spreader according to claim 1, characterized in that, The driving component (510) is a motor.

10. The disc spreader according to claim 1, characterized in that, The end of the second link (523) away from the intermediate link (522) is rotatably mounted on the mounting housing (100).

11. The disc spreader according to claim 1, characterized in that, The linkage mechanism (520) further includes a first buffer sleeve (525), and the middle link (522) has a first collar (527) at the end away from the first link (521). The first buffer sleeve (525) is disposed between the end pivot of the second link (523) and the first collar (527).

12. The disc spreader according to claim 1, characterized in that, The linkage mechanism (520) further includes a second buffer sleeve (526), ​​and the mounting housing (100) is provided with a second collar (600). The second buffer sleeve (526) is disposed between the end pivot of the second link (523) away from the intermediate link (522) and the second collar (600).

13. A seeding device, characterized in that, It includes a feeding mechanism (2000) and a disc spreader as described in any one of claims 1-12, wherein the feeding mechanism (2000) is mounted on the disc spreader.

14. An unmanned aerial vehicle (UAV), characterized in that, Includes the spreading device as described in claim 13.

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