Swing disc spreader, spreading device, and unmanned aerial vehicle

Abstract

Provided in the embodiments of the present application are a swing disc spreader, a spreading device, and an unmanned aerial vehicle. The swing disc spreader comprises a swing disc which is arranged to be rotatable; and a swing driving mechanism, which is in transmission connection to the swing disc and used for driving the swing disc to swing reciprocatingly, the swing disc being configured to be in contact with materials during a swinging process so as to spread the materials outwards. In the technical solution provided in the present application, when the swing disc spreader works, the swing driving mechanism of the swing disc spreader can drive the swing disc to swing reciprocatingly, and the swing disc is in contact with materials during the reciprocatingly swinging process, so as to spread the materials outwards. The swing disc spreader can achieve the spreading operation of materials simply by using one swing disc, such that compared with the prior art in which two spreading assemblies are arranged side by side, the swing disc spreader has a simpler structure, achieves a reduced overall size and a relatively uniform spreading width, thus reducing the cost.

Description

Disc spreaders, spreading devices and drones

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202311465799.7 filed on November 3, 2023, entitled “Disc spreader, spreading device and drone”, and the Chinese patent application No. 202311465760.5 filed on November 3, 2023, entitled “A spreading device and drone”, and the Chinese patent application No. 202310802257.8 filed on June 30, 2023, entitled “Disc spreader and spreader for spreader”, and the Chinese patent application No. 202310802257.8 filed on June 30, 2023, entitled “Disc spreader and spreader for spreader”, and the Chinese patent application No. 202310802257.8 filed on June 30, 2023, entitled “Disc spreader and spreader for spreader”, and the Chinese patent application No. 202310802257.8 filed on June 30, 2023, entitled “Disc spreader and spreader for spreader The present invention claims priority from the Chinese patent application No. 202310802613.6 filed on June 30, 2023, entitled “Disc spreader, spreading device and drone”, as well as the Chinese patent application No. 202321713356.0 filed on June 30, 2023, entitled “Disc spreader and spreader for spreader”, and the Chinese patent application No. 202321714304.5 filed on June 30, 2023, entitled “Disc spreader, spreading device and drone”, all of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of spreading equipment, and in particular to a disc spreader, a spreading device and a drone. Background Art

[0004] Agricultural drones are developing rapidly, and their payload is constantly increasing. They are being applied to more and more large-scale agricultural production links. In the field management of field crops, drones are not only used to spray liquid pesticides, but also to spread particles such as seeds, powders, and solid fertilizers.

[0005] In order to enable drones to spread seeds, powders, solid fertilizers and other particles, a spreading device is installed on the drone. In order to reduce the number of operation flights, the spreading component needs to be set to have a larger spreading width. In order to have a larger spreading width, the existing spreading device is provided with two side-by-side spreading components. However, the method of providing two side-by-side spreading components has the defects of complex structure, large size and high cost.

[0006] Summary of the Invention

[0007] The present application provides a disc spreader, a spreading device and a drone to solve the problems of complex structure, large size and high cost of current spreading devices.

[0008] In a first aspect, an embodiment of the present application provides a disc spreader, which includes: a disc, which is configured to be rotatable; a swing drive mechanism, which is transmission-connected to the disc and is used to drive the disc to swing back and forth; the disc contacts the material during the swinging process to spread the material outward.

[0009] The technical solution provided by the embodiments of the present application is that, during operation, the disc spreader's swing drive mechanism drives the disc to swing back and forth, which contacts the material during the swinging process, thereby spreading the material outward. This disc spreader can achieve material spreading operations using a single disc. Compared to the prior art system that uses two side-by-side spreading assemblies, this disc spreader has a simpler structure, a smaller overall volume, a more uniform sowing width, and lower costs.

[0010] According to the aforementioned embodiment of the first aspect of the present application, the disc spreader also includes a mounting shell, which is provided with a feed port and a discharge port; the disc is rotatably mounted in the mounting shell; wherein the material entering the mounting shell from the feed port can be thrown out from the discharge port by the swinging of the disc.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the swing drive mechanism includes a first motor and a connecting rod mechanism, the first motor drives the connecting rod mechanism to operate, and the connecting rod mechanism is configured to drive the swing plate to swing.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the connecting rod mechanism is arranged on the outside of the mounting shell, and the connecting rod mechanism is connected to the spinner through the mounting hole on the mounting shell.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the mounting shell includes a first shell and a second shell, and the first shell and the second shell are snapped together to form a accommodating space for accommodating the spinner; wherein the feed port is provided on the first shell, the spinner is mounted on the second shell, and the connecting rod mechanism is mounted on the outer side of the second shell away from the spinner.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the connecting rod mechanism includes a first connecting rod, a second connecting rod and an intermediate connecting rod; wherein, the first connecting rod is configured to be able to rotate under the drive of the first motor, the second connecting rod is connected to the spinning disc and is limited relative to the spinning disc in the circumferential direction, one end of the intermediate connecting rod is rotatably connected to the first connecting rod, and the other end is rotatably connected to the second connecting rod. During the rotation of the first connecting rod, the second connecting rod can be driven to swing by the intermediate connecting rod, so that the second connecting rod drives the spinning disc to swing back and forth.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the connecting rod mechanism is arranged on the outside of the mounting shell; wherein, a non-circular hole is provided on the side of the spinner facing the connecting rod mechanism, and a connecting shaft is provided on the second connecting rod, and the connecting shaft includes a non-circular portion passing through the mounting shell and cooperating with the non-circular hole, and the second connecting rod drives the spinner to swing through the non-circular portion.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, a counterweight is provided at one end of the first connecting rod away from the intermediate connecting rod; and / or, the rotating shaft of at least one of the first connecting rod, the intermediate connecting rod and the second connecting rod is installed in a ring, and a buffer sleeve is provided between the rotating shaft and the ring.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, a motor mounting seat for mounting the first motor is provided on a side of the connecting rod mechanism facing away from the mounting housing, and the motor mounting seat is fixed on the mounting housing.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the spinning tray is configured to swing back and forth on both sides in a vertical direction, and the spinning tray includes a material throwing component located below the swing center of the spinning tray.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the spinner includes a spinner body and a material throwing component arranged on the spinner body, the material throwing component includes a plurality of blades arranged circumferentially around the swing center, and a material dropping space is formed between the plurality of blades.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the flinger includes a material throwing component located on one side of the swing center and a block on the other side of the swing center; wherein, the block is a counterweight block; and / or, the block is a buffer block for impacting the buffer assembly on both sides, and the buffer blocks installed on the mounting shell are respectively arranged on both sides of the block.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the spinning disc is rotatably connected, and a track groove is provided on the spinning disc; the swing drive mechanism includes a rotatable turntable and a protrusion provided at a position off-center from the center of the turntable, and the protrusion is located in the track groove. During the rotation of the turntable with the protrusion, the protrusion moves in the track groove, thereby driving the spinning disc to swing with the rotation center as the swing center.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the spinner body is a fan-shaped structure, and the plurality of blades are all arranged on the arc edge of the spinner body.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, there is an angle between the arrangement direction of the blades and the diameter direction of the spinner body, and the angle of each blade is different.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the swinging plane of the spinner is perpendicular to the reference plane, and the swinging amplitudes of the spinner on both sides of the reference plane are the same.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the reference plane is parallel to the vertical direction.

[0026] In a second aspect, an embodiment of the present application provides a spreading device, which includes a disc spreader according to any of the aforementioned embodiments of the first aspect of the present application and a feeding mechanism for feeding material to the disc spreader.

[0027] According to any of the aforementioned embodiments of the second aspect of the present application, the feeding mechanism includes a main frame having a feeding inlet and a material guiding assembly installed on the main frame, the material guiding assembly is configured to be able to transport the material in the main frame to the feeding inlet of the disc spreader, and the material guiding assembly includes an auger and a second motor that drives the auger.

[0028] According to any of the aforementioned embodiments of the second aspect of the present application, the disc spreader is configured such that the angle between the swinging plane of the disc and the horizontal plane is 0 to 90°.

[0029] According to any of the aforementioned embodiments of the second aspect of the present application, the spreading device further includes a shell, the spinner is swingably arranged inside the shell, the feeding mechanism and the swing drive mechanism are respectively arranged on the outside of both sides of the shell, and the feeding mechanism and the swing drive mechanism are both connected to the shell.

[0030] According to any of the aforementioned embodiments of the second aspect of the present application, the swing drive mechanism includes a transmission member, which is connected to the spinner, and the transmission member is used to drive the spinner to move; the spreading device also includes a partition, which is arranged between the spinner and the transmission member, and the partition is used to prevent material from entering the transmission member.

[0031] According to any of the aforementioned embodiments of the second aspect of the present application, the partition comprises a baffle, and the spinner and the transmission member are respectively arranged on both sides of the baffle.

[0032] According to any of the aforementioned embodiments of the second aspect of the present application, the baffle is provided with a connecting hole, and the transmission member and the spinner are connected through the connecting hole.

[0033] According to any of the aforementioned embodiments of the second aspect of the present application, the spreading device includes a sealing member, which is arranged in the connecting hole.

[0034] According to any of the aforementioned embodiments of the second aspect of the present application, the partition further includes a cover plate, which is arranged on a side of the baffle away from the spinner, and the cover plate is used to cover the outside of the transmission member.

[0035] According to any of the aforementioned embodiments of the second aspect of the present application, an annular plate is protruded from the side of the baffle away from the spinner, the annular plate and the cover plate are detachably connected, and the annular plate and the cover plate together form an accommodating cavity, and the transmission member is arranged in the accommodating cavity.

[0036] According to any of the aforementioned embodiments of the second aspect of the present application, the spreading device further includes a first shell, which is arranged on a side of the partition close to the spinning disc, and the first shell is used to cover the spinning disc.

[0037] According to any of the aforementioned embodiments of the second aspect of the present application, the first shell includes a side plate and a curved plate, the curved plate is arranged on the side of the side plate close to the spinner, and the curved plate is connected to the top edge of the side plate, the curved plate is connected to the baffle, the side plate and the baffle are spaced apart by the curved plate, and the spinner is arranged between the side plate and the baffle.

[0038] According to any of the aforementioned embodiments of the second aspect of the present application, the spreading device further includes an auger, one end of which is connected to the side plate.

[0039] According to any of the aforementioned embodiments of the second aspect of the present application, the side plate is provided with a through hole, one end of the auger is arranged at the through hole, the auger transfers the material to the through hole, and the material can contact the spinner through the through hole, thereby being spread.

[0040] In a third aspect, an embodiment of the present application provides a drone, which is provided with a spreading device according to any of the aforementioned embodiments of the second aspect of the present application.

[0041] According to any of the aforementioned embodiments of the third aspect of the present application, the swing plane of the spinner is parallel to the yaw axis or the roll axis of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application 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 creative work.

[0043] FIG1 is a schematic structural diagram of a disc spreader according to one embodiment of the present application;

[0044] FIG2 is a schematic diagram of the exploded structure of the disc spreader of the embodiment shown in FIG1 ;

[0045] FIG3 is a schematic diagram of the structure of FIG2 viewed from another angle;

[0046] FIG4 is a schematic structural diagram of a spinning disk according to an embodiment of the present application;

[0047] FIG5 is a schematic structural diagram of a buffer assembly according to one embodiment of the present application;

[0048] FIG6 is a schematic diagram of the installation structure of the spinning disc and the connecting rod mechanism on the installation housing according to one embodiment of the present application;

[0049] FIG7 is a schematic diagram of the structure shown in FIG6 in an exploded state;

[0050] FIG8 is a schematic structural diagram of the cooperation between the swing drive mechanism and the motor mounting base according to one embodiment of the present application;

[0051] FIG9 is a schematic structural diagram of the connection between the spinning disc and the swing drive mechanism according to one embodiment of the present application;

[0052] FIG10 is a schematic structural diagram of a spreading device according to one embodiment of the present application;

[0053] FIG11 is a schematic cross-sectional view of the structure of the spreading device of the embodiment shown in FIG10 (wherein the spinning disc is configured such that the swinging plane is a vertical plane);

[0054] FIG12 is a partially enlarged schematic diagram of FIG11;

[0055] FIG13 is a schematic cross-sectional view of the structure of the spreading device of the embodiment shown in FIG10 (wherein the spinning disc is configured so that the swinging plane is a horizontal plane);

[0056] FIG14 is a schematic structural diagram of the spreading device of the embodiment shown in FIG9 in a disassembled state;

[0057] FIG15 is a schematic structural diagram of a spreading device provided by another embodiment of the present application from a first perspective;

[0058] FIG16 is a structural schematic diagram of a spreading device provided in another embodiment of the present application from a second perspective.

[0059] Explanation of the accompanying reference numerals: 1-disc spreader; 11-mounting housing; 111-first housing; 61-side plate; 611-through hole; 62-arc-shaped plate; 112-second housing; 1121-mounting frame; 1122-collar; 1123-axis hole; 113-auger mounting portion; 114-feed port; 115-discharge port; 12-disc; 121-disc body; 122-blades; 123-block; 124-connecting flange; 1241-non-circular hole; 125-connecting portion; 1251-track groove; 126-first rotating shaft; 13-connecting rod mechanism; 131-first connecting rod; 132-second connecting rod; 1321-connecting shaft; 1322-socket; 133-intermediate connecting rod; 134-drive shaft; 135-second buffer sleeve; 136-counterweight; 14-First motor; 15-Motor mounting base; 151-Top pressure block; 16-Buffer assembly; 161-Buffer part; 162-Guide rod; 163-Spring; 164-Mounting support; 165-Circlip; 17-First buffer sleeve; 181-Turntable; 182-Bump; 183-Second rotating shaft; 2-Feeding mechanism; 21-Main frame; 22-Auger; 23-Sleeve; 231-Opening; 24-Second motor; 70-Transmission member; 30-Partition; 32-Baffle; 321-Connecting hole; 33-Cover plate; 34-Annular plate; 50-Material box; 100-Spreading device. DETAILED DESCRIPTION

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0061] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0062] 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.

[0063] In the description of this application, 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 product of the application is usually placed when in use. It is only for the convenience of describing this application 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 this application.

[0064] 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.

[0065] It should be noted that, in the absence of conflict, the features in the embodiments of this application can be combined with each other.

[0066] The present invention provides a disc spreader, as shown in Figures 1-3. The disc spreader 1 includes a disc 12 and a swing drive mechanism. The disc 12 is rotatable. The swing drive mechanism is in transmission connection with the disc 12 and is configured to drive the disc 12 to swing back and forth. The disc 12 is configured to contact material during its swinging motion, thereby spreading the material outward, i.e., throwing the material outward from the disc 12.

[0067] According to the disc spreader 1 of the embodiment of the present application, when the disc spreader 1 is in operation, the swing drive mechanism of the disc spreader 1 can drive the disc 12 to swing back and forth. During the swinging process, the disc 12 contacts the material, thereby spreading the material outward. The disc spreader 1 can achieve material spreading operations with a single disc 12. Compared with the prior art that provides two side-by-side spreading assemblies, the disc spreader 1 has a simpler structure, a smaller overall volume, and lower costs.

[0068] In one embodiment, the disc spreader also includes a mounting shell 11, which is provided with a feed port 114 and a discharge port 115; the disc 12 is rotatably mounted in the mounting shell 11; wherein, the material entering the mounting shell 11 from the feed port 114 can be thrown out from the discharge port 115 by the swinging of the disc 12.

[0069] In one embodiment, the swing drive mechanism includes a first motor 14 and a transmission member, wherein the first motor 14 drives the transmission member to move, and the transmission member is connected to the spinning disc 12, and the transmission member is used to drive the spinning disc 12 to move. In some embodiments, the transmission member is configured to drive the spinning disc 12 to swing.

[0070] In one embodiment, as shown in FIG3 and FIG6 , the swing drive mechanism includes a first motor 14 and a connecting rod mechanism 13 . The first motor 14 drives the connecting rod mechanism 13 to operate, and the connecting rod mechanism 13 is configured to drive the spinning disc 12 to swing.

[0071] In one embodiment, the connecting rod mechanism 13 is arranged on the outside of the mounting housing 11, and the connecting rod mechanism 13 is connected to the spinning disc 12 through the mounting hole on the mounting housing 11. The connecting rod mechanism 13 includes a first connecting rod 131, a second connecting rod 132 and an intermediate connecting rod 133, and the second connecting rod 132 is connected to the spinning disc 12 through the mounting hole on the mounting housing 11.

[0072] Specifically as shown in Figures 2 and 3, for the convenience of assembly, the mounting shell 11 includes a first shell 111 and a second shell 112, which are snapped together to form a accommodating space for the spinner 12; wherein, a feed port 114 is provided on the first shell 111, the spinner 12 is mounted on the second shell 112, and the connecting rod mechanism 13 is mounted on the outer side of the second shell 112 away from the spinner 12.

[0073] In one embodiment, as shown in FIG. 6 to FIG. 8 , the link mechanism 13 includes a first link 131 , a second link 132 , and an intermediate link 133 .

[0074] The first connecting rod 131 is configured to be able to rotate around the driving shaft 134 under the drive of the first motor 14, the second connecting rod 132 is connected to the spinning disc 12 and is limited relative to the spinning disc 12 in the circumferential direction, one end of the intermediate connecting rod 133 is rotatably connected to the first connecting rod 131, and the other end is rotatably connected to the second connecting rod 132. During the rotation of the first connecting rod 131, the second connecting rod 132 can be driven to swing by the intermediate connecting rod 133, so that the second connecting rod 132 drives the spinning disc 12 to swing back and forth.

[0075] 6 and 7 (in conjunction with FIG11-12 ), the connecting rod mechanism 13 is disposed outside the mounting housing 11. A non-circular hole 1241 is provided on the side of the spinner 12 facing the connecting rod mechanism 13. A connecting shaft 1321 is provided on the second connecting rod 132. The connecting shaft 1321 includes a non-circular portion that passes through the mounting housing 11 to engage with the non-circular hole 1241. The second connecting rod 132 drives the spinner 12 to swing via the non-circular portion.

[0076] Furthermore, a connecting flange 124 is provided on the side of the spinning tray 12 facing the connecting rod mechanism 13. The connecting flange 124 can be fixed to the spinning tray body 121 of the spinning tray 12 by bolt connection or other connection methods. Specifically, a non-circular hole 1241 is provided on the connecting flange 124. A connecting shaft 1321 is provided on the end of the second connecting rod 132 away from the intermediate connecting rod 133. The non-circular portion of the connecting shaft 1321 passes through the axial hole 1123 of the second housing 112 and is inserted into the non-circular hole of the connecting flange 124. Therefore, during the swinging process, the second connecting rod 132 drives the spinning tray 12 to swing through the mating connection between the connecting shaft 1321 and the connecting flange 124. The state of the connecting flange 124 and the second connecting rod 132 after being connected is shown in FIG.

[0077] Since the spinning disc 12 needs to perform a rapid reversing motion, the impact vibration generated is relatively large. Therefore, some embodiments of the present application provide a variety of vibration reduction measures to reduce the vibration.

[0078] In some embodiments, the outer side of the rotating shaft of at least one of the first connecting rod 131, the middle connecting rod 133 and the second connecting rod 132 is installed in the ring, and a buffer sleeve is provided between the rotating shaft and the ring. The buffer sleeve is usually made of rubber elastic material.

[0079] As shown in Figures 6 and 7, a collar 1122 is provided around the shaft hole 1123 on the second shell 112, and the rotating shaft of the second connecting rod 132 (i.e., the connecting shaft 1321) is inserted into the collar 1122 and extends into the inner side of the mounting shell 11 to be connected to the spinneret 12, wherein a first buffer sleeve 17 is provided between the collar 1122 and the connecting shaft 1321, and the first buffer sleeve 17 is used to reduce the vibration of the spinneret 12 during the swinging process of the second connecting rod 132.

[0080] Furthermore, as shown in Figure 6, at the pivotal connection between the second connecting rod 132 and the intermediate connecting rod 133, a rotating shaft is provided at one end of the second connecting rod 132 connected to the intermediate connecting rod 133. A collar is provided on the intermediate connecting rod 133, into which the rotating shaft is inserted. A second buffer sleeve 135 is provided between the rotating shaft and the collar. The presence of a buffer sleeve between the rotating rods can mitigate vibration caused by swinging. Buffer sleeves can also be used to reduce vibration at other pivotal connections.

[0081] In some embodiments, a counterweight 136 is provided at one end of the first connecting rod 131 away from the middle connecting rod 133 . The counterweight 136 can reduce vibration caused by the eccentricity of the first connecting rod 131 .

[0082] For alleviating the vibration that produces in the swinging process of throwing away dish 12, in some embodiments, as shown in Figure 2, throwing away dish 12 comprises the material parts that are positioned at a side of the swinging center (the material parts that are thrown away shown in Figure 2 are a plurality of blades 122) and the block 123 on the other side of the swinging center, the mounting housing 11 is also provided with the buffer assembly 16 that is positioned at block 123 both sides, and block 123 is for hitting the buffer block of buffer assembly 16 when swinging towards both sides. In addition, block 123 can also be used as counterweight, because the material parts that are thrown away are positioned at the below of the swinging center, counterweight is set on a side away from the material parts that are thrown away of throwing away dish 12, the center of gravity of throwing away dish 12 can be lifted, thereby is conducive to promoting the swing stability of throwing away dish. That is to say, in the embodiment shown in Figure 2, block 123 both as the counterweight that promotes the center of gravity of throwing away dish 12, uses as the buffer block that hits buffer assembly 16 again. Since the portion of the buffer assembly 16 that the block 123 collides with is made of a buffering flexible material, such as rubber, the block 123 can be made of metal as a counterweight. Of course, the block 123 can also be made of a flexible material.

[0083] 5 , the structure of the buffer assembly 16 includes a buffer portion 161, a guide rod 162, a spring 163, and a mounting support 164. The mounting support 164 is fixed to the mounting housing 11, and the guide rod 162 is axially movable through the mounting hole of the mounting support 164. The spring 163 is disposed between the buffer portion 161 and the mounting support 164, and a retaining spring 165 is disposed at one end of the guide rod 162 away from the spring 163 to prevent the guide rod 162 from separating from the mounting support 164. During the swinging process of the spinning disc 12, when the block 123 strikes the buffer portion 161 of the buffer assembly 16, the buffer portion 161 pushes the guide rod 162 to move, compressing the spring 163 and providing a buffering effect on the swinging of the block 123. After the block 123 separates from the buffer portion 161, the buffer portion 161 and the guide rod 162 are reset under the action of the spring 163.

[0084] In one embodiment, as shown in Figures 1 and 2, the swinging plate 12 is configured to swing back and forth on both sides in the vertical direction. The swinging plate 12 includes a material throwing component located below the swing center, and the discharge port 115 is arranged below the mounting shell 11. In this way, when the swinging plate 12 swings back and forth on both sides in the vertical direction, the material is thrown out from the discharge port 115 below through the material throwing component below.

[0085] Of course, the spinning tray 12 is not limited to swinging back and forth on both sides in the vertical direction. A swing driving mechanism may also be provided to drive the spinning tray 12 to swing back and forth on both sides in the horizontal direction or the inclined direction.

[0086] In one embodiment, the structure of the spinner 12 can be seen in Figures 2 and 4. The spinner 12 includes a spinner body 121 and a material-spinning component disposed on the spinner body 121. The material-spinning component includes a plurality of blades 122 spaced circumferentially around the spinner's swing center, with a material-dropping space formed between the plurality of blades 122. When the material enters the mounting housing 11 from the feed inlet 114, it falls onto the blades 122. As the spinner 12 swings, the blades 122 strike the material, ejecting it.

[0087] Specifically, the spinner body 121 is a fan-shaped structure, and a plurality of blades 122 are arranged on the arc edge of the spinner body 121. There is an angle between the arrangement direction of the blades 122 and the diameter direction of the spinner body 121, and the angle of each blade 122 is different.

[0088] In this embodiment, the angle ranges from 14° to 40°. Specifically, it may be 14.18°, 22°, 32.76°, or 38.87°. In other embodiments, the angle may also be 14°, 20°, 33.41°, or 40°. This is not specifically limited here.

[0089] In this embodiment, the thickness of the blade 122 is 5 mm, the blade 122 is a rectangular structure, and the length of the blade 122 in the diameter direction of the spinner body 121 is 26 mm.

[0090] In one embodiment, to facilitate installation of the first motor 14 , a motor mounting base 15 for mounting the first motor 14 is provided on a side of the connecting rod mechanism 13 facing away from the mounting housing 11 , and the motor mounting base 15 is fixed to the mounting housing 11 .

[0091] As shown in Figures 1 to 3, a mounting frame 1121 is provided on the outside of the mounting shell 11, and the connecting rod mechanism 13 is installed in the space surrounded by the mounting frame 1121. The motor mounting seat 15 is installed on the mounting frame 1121 and covered on the connecting rod mechanism 13 to protect the connecting rod mechanism 13.

[0092] Specifically, the motor mounting seat 15 includes a snap-fitting plate body for snapping onto the mounting frame 1121. A plurality of mounting platforms with bolt holes can be provided on the mounting frame 1121. The snap-fitting plate body can be fixed to the mounting platform of the mounting frame 1121 by bolts. In this way, the connecting rod mechanism 13 is accommodated in the space between the mounting frame 1121 and the snap-fitting plate body, and the first motor 14 is installed on the outside of the snap-fitting plate body away from the connecting rod mechanism 13.

[0093] Furthermore, as shown in Figure 6, a drive shaft 134 is provided on the first connecting rod 131. The cross section of the drive shaft 134 is a non-circular cross section and can be installed in conjunction with the non-circular hole on the first connecting rod 131. The first motor 14 is connected to the drive shaft 134, so that the first motor 14 can drive the first connecting rod 131 to rotate through the drive shaft 134, and drive the intermediate connecting rod 133 to swing during the circumferential rotation of the first connecting rod 131, and the intermediate connecting rod 133 drives the second connecting rod 132 to swing, so that the second connecting rod 132 drives the swing plate 12 to swing.

[0094] In addition, as shown in Figure 2, a pressing block 151 is further provided on the side of the motor mounting base 15 facing the connecting rod mechanism 13. The pressing block 151 is used to press on the position of the second connecting rod 132 having the connecting shaft 1321. Specifically, a socket 1322 can be provided at the position corresponding to the connecting shaft 1321 of the second connecting rod 132 (refer to Figures 6 and 11-12). The pressing block 151 can be inserted into the socket 1322 to be positioned and pressed on the second connecting rod 132, thereby preventing the connecting shaft 1321 of the second connecting rod 132 from being disconnected from the spinneret 12.

[0095] The specific structure of the connection between the connecting shaft 1321 of the second connecting rod 132 and the spinning disc 12 can be referred to Figure 12 (combined with Figure 7). A connecting flange 124 is provided on one side of the spinning disc body 121 of the spinning disc 12. The connecting flange 124 is provided with a non-circular hole 1241. The connecting shaft 1321 of the second connecting rod 132 is inserted into the non-circular hole 1241. The pressing portion 151 of the motor mounting seat 15 includes an inserting portion and a flange portion protruding from the inserting portion in the radial direction. The inserting portion is inserted into the socket 1322 for positioning, and the flange portion presses on the edge of the socket 1322, thereby ensuring the connection between the second connecting rod 132 and the spinning disc 12.

[0096] There are many kinds of swing driving mechanisms for driving the spinning tray 12 to swing, which are not limited to the connecting rod mechanism. For example, it can also be a mechanism as shown in FIG. 9 , as long as the spinning tray can swing.

[0097] Referring to Figure 9, the spinning tray 12 is configured to be rotatable, and a track groove 1251 is provided on the spinning tray 12; the swing drive mechanism includes a rotatable turntable 181 and a protrusion 182 provided at a position off-center from the center of the turntable 181, and the protrusion 182 is located in the track groove 1251. When the turntable 181 rotates with the protrusion 182, the protrusion 182 moves in the track groove 1251, thereby driving the spinning tray 12 to swing with the rotation center as the swing center.

[0098] More specifically, the spinner 12 can be rotatably mounted on the mounting housing 11 via a first rotating shaft 126. The spinner 12 includes a spinner body 121 and a connecting portion 125 connected to the spinner body 121. A track groove 1251 is provided on the connecting portion 125. The connecting portion 125 and the spinner body 121 can be connected and fixed together at the first rotating shaft 126. The turntable 181 is rotatably mounted on the mounting housing 11 via a second rotating shaft 183 and can be driven by a motor to rotate the turntable 181, thereby driving the protrusion 182 to rotate. The protrusion 182 moves along the track groove 1251 during rotation, and the cooperation between the protrusion 182 and the track groove 1251 drives the spinner 12 to swing.

[0099] The disk body 121 may also be provided with a plurality of blades. Referring to the arrangement of the plurality of blades in FIG. 4 , the disk 12 can be swung so that the blades hit the material and throw the material out.

[0100] According to another aspect of the present application, a spreading device is further provided, as shown in FIG. 10 to FIG. 14 , the spreading device includes a disc spreader 1 according to any one of the above embodiments and a feeding mechanism 2 for feeding material to the disc spreader 1 .

[0101] In one embodiment, the feed port 114 of the disc spreader 1 is provided on one side of the mounting housing 11 , and the feeding mechanism 2 is connected to the side of the mounting housing having the feed port 114 for feeding material to the feed port 114 .

[0102] In one embodiment, the feeding mechanism 2 includes a main frame 21 having a feeding inlet and a material guiding assembly installed on the main frame 21. The material guiding assembly is configured to transport the material in the main frame 21 to the feeding inlet 114 of the mounting shell 11. The material guiding assembly includes an auger 22 and a second motor 24 that drives the auger 22.

[0103] Optionally, in order to facilitate the overall removal and placement of the auger 22, the guide assembly further includes an outer sleeve 23 having an opening 231. The auger 22 is installed in the outer sleeve 23, and then the outer sleeve 23 and the auger are installed on the main frame 21 as a whole. The opening 231 of the outer sleeve 23 is connected to the feeding inlet of the main frame. The material entering from the feeding inlet can enter the outer sleeve 23 through the opening 231, and thus be transported by the auger 22 to the disc spreader 1.

[0104] Specifically, referring to FIG2 , an auger mounting portion 113 is provided at the feed inlet 114 of the mounting housing 11 of the disc spreader 1. One end of the auger 22 is rotatably mounted on the auger mounting portion 113, with the opening at one end of the outer sleeve 23 aligned with the feed inlet 114 of the mounting housing 11. A second motor 24 is connected to the other end of the auger 22 to drive the auger 22 to rotate.

[0105] When spreading materials, the materials enter the main frame 21 from the feeding inlet of the main frame 21, and are spirally transported by the auger 22 to the mounting housing 11 of the disc spreader 1. Then, under the swing of the disc 12, the materials in the mounting housing 11 are thrown out to achieve material spreading.

[0106] The spinner spreader 1 can be configured so that the angle between the swing plane of the spinner 12 and the horizontal plane is between 0° and 90°. Specifically, during sowing, if the angle between the swing plane of the spinner 12 and the horizontal plane is 0°, the spinner 12 swings along the horizontal plane; if the angle between the swing plane of the spinner 12 and the horizontal plane is 90°, the spinner 12 swings along the vertical plane; and if the angle between the swing plane and the horizontal plane is greater than 0° but less than 90°, the spinner 12 swings along an inclined plane between the vertical and horizontal planes. For example, the spinner spreader in the sowing device shown in Figure 11 is configured so that the spinner 12 can swing along the vertical plane, while the spinner 12 in the sowing device shown in Figure 13 is configured so that it swings along the horizontal plane. The angle of the swing plane of the spinner 12 can be adjusted by installing the spinner spreader in the sowing device or by installing the sowing device, for example, on a drone or application equipment.

[0107] Specifically, the swinging plane of the spinning disc 12 is perpendicular to the reference plane, and the swinging amplitudes of the spinning disc 12 on both sides of the reference plane are the same.

[0108] In this embodiment, the reference plane is parallel to the vertical direction.

[0109] According to another aspect of the present application, an unmanned aerial vehicle (UAV) is provided, which is provided with a spreading device as described in any of the above embodiments. When the spreading device is in operation, the feeding mechanism 2 feeds the disc spreader 1. The swing drive mechanism of the disc spreader 1 can drive the disc 12 to swing back and forth. The disc 12 contacts the material during the swinging process, thereby spreading the material outward. The disc spreader 1 can achieve the material spreading operation with a single disc 12. Compared with the prior art that provides two side-by-side spreading assemblies, the disc spreader 1 has a simpler structure, a smaller overall volume, and lower costs. The swing plane of the disc 12 is parallel to the yaw axis or roll axis of the UAV.

[0110] Agricultural drones are rapidly developing, with payloads increasing. They are being applied to a growing number of agricultural production processes. In field crop management, drones are not only used to spray liquid pesticides, but also to spread granules such as seeds, powders, and solid fertilizers. To achieve this, drones are equipped with spreading devices.

[0111] The spreading device in the related art has a technical problem that materials can easily enter the interior of the transmission parts during the spreading process, thereby affecting the operation of the transmission parts.

[0112] Referring to Figures 15 and 16 , this embodiment also provides a drone comprising a spreading device 100 and a body. The spreading device 100 is mounted on the bottom of the body and follows the flight of the drone to perform seeding operations. This drone effectively alleviates the aforementioned technical issues by preventing material from entering the transmission member 70, ensuring the proper functioning of the transmission member 70 and, consequently, the proper seeding operation of the spreading device 100.

[0113] In this embodiment, the carrier is a drone, specifically an agricultural drone. This drone is typically equipped with spraying and seeding components required for agricultural purposes, enabling spray irrigation, seeding, and other tasks. Of course, the carrier can also carry cameras, gaming devices, and other devices. Furthermore, the carrier is not limited to drones; for example, it can also be a robot, unmanned vehicle, or unmanned boat.

[0114] Another embodiment of the present application provides a spreading device 100, wherein the swing drive mechanism includes a transmission member 70, which is connected to the spinner 12, and the transmission member 70 is used to drive the spinner 12 to move; the spreading device 100 also includes a partition 30, which is arranged between the spinner 12 and the transmission member 70, and the partition 30 is used to prevent material from entering the transmission member 70.

[0115] Referring to FIG15 , another embodiment of the present application provides a spreading device 100, which includes a spinning disc 12, a transmission member 70, and a partition 30. The spinning disc 12 is used to spread material. The transmission member 70 is connected to the spinning disc 12 and is used to drive the spinning disc 12 to move. The partition 30 is disposed between the spinning disc 12 and the transmission member 70 and is used to prevent material from entering the transmission member 70. The spinning disc 12 swings back and forth relative to the partition 30 to spread the material.

[0116] Specifically, when the spreading device 100 of the related art is in use, after the material in the material box 50 is transferred to the spinning disc 12, the material contacts the blades 122 of the spinning disc 12, and the transmission member 70 drives the spinning disc 12 to move, thereby spreading the material. The material entering the spinning disc 12 is easily entered into the transmission member 70, thereby affecting the normal operation of the transmission member 70. To solve this technical problem, the spreading device 100 provided in this embodiment is connected to the spinning disc 12 and the transmission member 70 during use. The transmission member 70 is used to drive the spinning disc 12 to move, thereby spreading the material. A partition 30 is provided between the spinning disc 12 and the transmission member 70. The partition 30 can prevent the material from entering the transmission member 70 while entering the spinning disc 12, thereby affecting the operation of the transmission member 70. The partition 30 directly blocks the material from entering the transmission member 70, thereby ensuring the normal operation of the transmission member 70 and thus ensuring the normal spreading operation of the spreading device 100.

[0117] In some embodiments, the second shell 112 of the aforementioned embodiments can also serve as the partition 30 of this embodiment.

[0118] In this embodiment, the partition 30 includes a baffle 32, and the spinner 12 and the transmission member 70 are respectively arranged on both sides of the baffle 32. The baffle 32 can directly block the material from entering the transmission member 70, and at the same time, the baffle 32 can also exert a resisting force on the material so that the material can enter the spinner 12, thereby achieving sowing, further improving the sowing efficiency.

[0119] Specifically, the baffle 32 is a circular disk structure or an elliptical disk structure.

[0120] It can be understood that the spinner 12 can swing relative to the baffle 32 through the transmission member 70, and specifically can swing back and forth relative to the baffle 32, so as to spread the material.

[0121] It should be noted that the spinner 12 includes a spinner body 121 and a plurality of blades 122. The plurality of blades 122 are arranged at intervals along the circumferential direction on the spinner body 121. The spinner body 121 is used to swing back and forth so that the blades 122 contact the material and spread it out.

[0122] Specifically, the baffle 32 has a connecting hole 321, through which the transmission member 70 and the spinner body 121 are connected. The output end of the transmission member 70 is connected to the spinner body 121 through the connecting hole 321, allowing the transmission member 70 to drive the spinner body 121 to swing back and forth. The dimensions of the connecting hole 321 are adapted to those of the output end of the transmission member 70.

[0123] In this embodiment, the connection hole 321 is a circular structure. In other embodiments, the connection hole 321 can also be an elliptical structure or a square structure, which is not specifically limited here.

[0124] In order to prevent materials from entering the transmission member 70 through the connecting hole 321 and to ensure the normal operation of the transmission member 70 , the spreading device 100 includes a sealing member disposed in the connecting hole 321 .

[0125] In this embodiment, the sealing member is a sealing ring, which is sleeved in the connecting hole 321 .

[0126] Furthermore, the partition 30 includes a cover plate 33, which is disposed on the side of the baffle 32 facing away from the spinner 12 and is used to cover the exterior of the transmission member 70. Specifically, an annular plate 34 is protruding from the side of the baffle 32 facing away from the spinner 12. The annular plate 34 and the cover plate 33 are detachably connected and together form a receiving chamber within which the transmission member 70 is disposed. The sealed chamber formed by the curved plate 62 and the cover plate 33 provides a protective seal for the transmission member 70, preventing it from being affected by other factors and causing it to malfunction.

[0127] It can be understood that the spreading device 100 also includes a first motor, which is arranged on the side of the cover 33 away from the transmission member 70, and the first motor is connected to the transmission member 70. The first motor drives the transmission member 70 to move, so that the transmission member 70 drives the spinner 12 to swing back and forth.

[0128] In some embodiments, the spreading device 100 also includes a first shell 111, which is arranged on the side of the partition 30 close to the spinner 12. The first shell 111 is used to cover the spinner 12. Specifically, the first shell 111 includes a side panel 61 and an arc-shaped plate 62. The arc-shaped plate 62 is arranged on the side of the side panel 61 close to the spinner 12, and the arc-shaped plate 62 is connected to the top edge of the side panel 61, and the arc-shaped plate 62 is connected to the baffle 32. The side panel 61 and the baffle 32 are spaced apart by the arc-shaped plate 62, and the spinner 12 is arranged between the side panel 61 and the baffle 32.

[0129] Specifically, the side plate 61 is a disc structure. The arc length of the arc plate 62 is less than half the circumference of the side plate 61. The arc plate 62 is disposed above the side plate 61 and is used to cover the top of the spinner 12. The two ends of the arc plate 62 are respectively connected to the side plate 61 and the baffle 32.

[0130] It is understood that the spreading device 100 further includes an auger 22 and a material box 50. The material box 50 is disposed at the bottom of the machine body, and the auger 22 is disposed at the discharge port of the material box 50. The material box 50 is used to store material, and one end of the auger 22 is connected to the side panel 61. The side panel 61 is provided with a through hole 611, and one end of the auger 22 is disposed at the through hole 611. The material in the material box 50 enters the auger 22 through the discharge port. When the auger 22 rotates, it can transfer the material to the through hole 611, so that the material can enter the spinner 12 through the through hole 611 and contact the blades 122 of the spinner 12, thereby being spread.

[0131] The spreading device 100 and the drone provided in this embodiment have at least the following advantages:

[0132] When the sowing device 100 of the related art is in use, after the material in the material box 50 is transferred to the spinning disc 12, the material contacts the blades 122 of the spinning disc 12, and the transmission member 70 drives the spinning disc 12 to move, thereby spreading the material. Among them, the material entering the spinning disc 12 is easily entered into the transmission member 70, thereby affecting the normal operation of the transmission member 70. To solve this technical problem, the sowing device 100 provided in this embodiment is connected to the spinning disc 12 and the transmission member 70 during use. The transmission member 70 is used to drive the spinning disc 12 to move, thereby spreading the material. A partition 30 is provided between the spinning disc 12 and the transmission member 70. The partition 30 can prevent the material from entering the transmission member 70 while entering the spinning disc 12, thereby affecting the operation of the transmission member 70. The partition 30 directly blocks the material from entering the transmission member 70, thereby ensuring the normal operation of the transmission member 70, thereby ensuring the normal sowing operation of the sowing device 100.

[0133] In summary, some other embodiments of the present application provide a spreading device 100 and a drone, the spreading device 100 including a spinning disc 12, a transmission member 70, and a partition 30. The spinning disc 12 is used to spread materials, the transmission member 70 is connected to the spinning disc 12, the transmission member 70 is used to drive the spinning disc 12 to move, and the partition 30 is provided between the spinning disc 12 and the transmission member 70. The partition 30 is used to prevent materials from entering the transmission member 70. When the spreading device 100 is in use, the spinning disc 12 is connected to the transmission member 70, the transmission member 70 is used to drive the spinning disc 12 to move, thereby spreading the materials. A partition 30 is provided between the spinning disc 12 and the transmission member 70. The partition 30 can prevent materials from entering the transmission member 70 while entering the spinning disc 12, thereby affecting the operation of the transmission member 70. The partition 30 directly blocks the materials from entering the transmission member 70, thereby ensuring the normal operation of the transmission member 70, thereby ensuring the normal spreading operation of the spreading device 100.

[0134] The drone includes a body and a spreading device 100. The spreading device 100 is disposed at the bottom of the body. During operation, the drone connects a spinning disc 12 to a transmission member 70, which drives the spinning disc 12 to spread the material. A partition 30 is disposed between the spinning disc 12 and the transmission member 70. The partition 30 prevents material from entering the transmission member 70 while simultaneously entering the spinning disc 12, thereby affecting the operation of the transmission member 70. By directly blocking material from entering the transmission member 70, the partition 30 ensures the normal operation of the transmission member 70, thereby ensuring the normal spreading operation of the spreading device 100.

[0135] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application 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 this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A disc spreader, comprising: A spinning plate, arranged to be rotatable; A swing driving mechanism, which is in driving connection with the spinning disc and is used to drive the spinning disc to swing back and forth; The spinner is arranged to contact the material during the swinging process so as to spread the material outwards.

2. The disk spreader according to claim 1, further comprising a mounting housing provided with a feed inlet and a discharge outlet; the disk spreader is rotatably mounted in the mounting housing; in, The material entering the installation shell from the feed port can be thrown out from the discharge port by the swinging of the swing plate.

3. The disc spreader according to claim 2, wherein: The swing driving mechanism comprises a first motor and a connecting rod mechanism, wherein the first motor drives the connecting rod mechanism to move, and the connecting rod mechanism is configured to drive the swinging plate to swing.

4. The disc spreader according to claim 3, wherein: The connecting rod mechanism is arranged on the outside of the mounting shell, and the connecting rod mechanism is connected with the spinning disc through the mounting hole on the mounting shell.

5. The disc spreader according to claim 4, wherein: The mounting housing comprises a first housing and a second housing, wherein the first housing and the second housing are buckled together to form a receiving space for receiving the spinning disc; The first shell is provided with the feed port, the spinner is mounted on the second shell, and the connecting rod mechanism is mounted on the outer side of the second shell away from the spinner.

6. The disc spreader according to claim 3, wherein: The connecting rod mechanism comprises a first connecting rod, a second connecting rod and an intermediate connecting rod; Among them, the first connecting rod is configured to be able to rotate under the drive of the first motor, the second connecting rod is connected to the spinning disc and is limited relative to the spinning disc in the circumferential direction, one end of the intermediate connecting rod is rotatably connected to the first connecting rod, and the other end is rotatably connected to the second connecting rod. During the rotation of the first connecting rod, the second connecting rod can be driven to swing through the intermediate connecting rod, so that the second connecting rod drives the spinning disc to swing back and forth.

7. The disc spreader according to claim 6, wherein: The connecting rod mechanism is arranged on the outside of the mounting housing; Among them, a non-circular hole is provided on the side of the spinning disc facing the connecting rod mechanism, and a connecting shaft is provided on the second connecting rod. The connecting shaft includes a non-circular part that passes through the mounting shell and is installed in cooperation with the non-circular hole. The second connecting rod drives the spinning disc to swing through the non-circular part.

8. The disc spreader according to claim 6, wherein: A counterweight is provided at one end of the first connecting rod away from the intermediate connecting rod; and / or, The rotating shaft of at least one of the first connecting rod, the intermediate connecting rod and the second connecting rod is installed in the sleeve ring, and a buffer sleeve is arranged between the rotating shaft and the sleeve ring.

9. The disc spreader according to claim 4, wherein: A motor mounting seat for mounting the first motor is provided on a side of the connecting rod mechanism facing away from the mounting housing, and the motor mounting seat is fixed on the mounting housing.

10. The disc spreader according to any one of claims 1 to 9, wherein: The spinning disc is arranged to swing back and forth on both sides in a vertical direction, and the spinning disc comprises a material throwing component located below the swinging center of the spinning disc.

11. The disc spreader according to any one of claims 1 to 9, wherein: The spinning disc comprises a spinning disc main body and a material throwing component arranged on the spinning disc main body. The material throwing component comprises a plurality of blades arranged at intervals along a circumferential direction around a swing center, and a material dropping space is formed between the plurality of blades.

12. The disc spreader according to any one of claims 2 to 9, wherein: The swinging plate includes a swinging component located on one side of the swinging center and a block located on the other side of the swinging center; Wherein, the block is a counterweight block; and / or, the block is a buffer block for impacting the buffer components on both sides, and the buffer blocks installed on the mounting shell are respectively arranged on both sides of the block.

13. The disc spreader according to claim 1 or 2, wherein: The spinning disc is rotatably connected, and a track groove is arranged on the spinning disc; The swing drive mechanism comprises a rotatable turntable and a protrusion arranged at a position off-center of the turntable, wherein the protrusion is located in the track groove, and the turntable rotates with the protrusion. During the process, the protrusion moves in the track groove to drive the spinning plate to swing with the rotation center as the swing center.

14. The disc spreader according to claim 11, wherein: The spinning tray body is a fan-shaped structure, and the plurality of blades are arranged on the arc edge of the spinning tray body.

15. The disc spreader according to claim 11, wherein: There is an angle between the arrangement direction of the blades and the diameter direction of the spinner body, and the angle of each blade is different.

16. The disc spreader according to claim 1 or 2, wherein: The swing plane of the spinning disk is perpendicular to the reference plane, and the swing amplitudes of the spinning disk on both sides of the reference plane are the same.

17. The disc spreader according to claim 16, wherein: The reference plane is parallel to the vertical direction.

18. A spreading device, wherein: The spreading device comprises a disc spreader according to any one of claims 1 to 17 and a feeding mechanism for feeding material to the disc spreader.

19. The spreading device according to claim 18, wherein: The feeding mechanism includes a main frame with a feeding inlet and a material guiding assembly installed on the main frame, wherein the material guiding assembly is configured to transport the material in the main frame to the feeding inlet of the disc spreader, and the material guiding assembly includes an auger and a second motor driving the auger.

20. A spreading device according to claim 18 or 19, wherein: The disk spreader is arranged such that the angle between the swinging plane of the disk and the horizontal plane is 0-90°.

21. The spreading device according to claim 18, wherein: The spreading device also includes a shell, the spinning disc is swingably arranged inside the shell, the feeding mechanism and the swing driving mechanism are respectively arranged outside the two sides of the shell, and the feeding mechanism and the swing driving mechanism are both connected to the shell.

22. The spreading device according to claim 18, wherein: The swing drive mechanism comprises a transmission member, the transmission member is connected to the swing plate, and the transmission member is used to drive the swing plate to move; The spreading device further comprises a partition, which is arranged between the spinning disc and the transmission member, and is used to prevent materials from entering the transmission member.

23. A spreading device according to claim 22, wherein: The partition comprises a baffle, and the spinning disc and the transmission member are respectively arranged on both sides of the baffle.

24. A spreading device according to claim 23, wherein: The baffle is provided with a connecting hole, and the transmission member and the spinning disc are connected through the connecting hole.

25. A spreading device according to claim 24, wherein: The spreading device comprises a sealing member, which is arranged at the connecting hole.

26. The spreading device according to claim 23, wherein: The partition also includes a cover plate, which is arranged on a side of the baffle away from the spinner, and is used to cover the outside of the transmission member.

27. A spreading device according to claim 26, wherein: An annular plate is protruded from one side of the baffle away from the spinning disc. The annular plate and the cover plate are detachably connected, and the annular plate and the cover plate together form a containing cavity. The transmission member is arranged in the containing cavity.

28. The spreading device according to claim 23, wherein: The spreading device further comprises a first shell, which is arranged on a side of the partition close to the spinning disc, and is used to cover the spinning disc.

29. A spreading device according to claim 28, wherein: The first shell includes a side plate and an arc plate, the arc plate is arranged on a side of the side plate close to the spinner, and the arc plate is connected to the top edge of the side plate, the arc plate is connected to the baffle, the side plate and the baffle are spaced apart by the arc plate, and the spinner is arranged between the side plate and the baffle.

30. The spreading device according to claim 29, wherein: The spreading device also includes an auger, one end of which is connected to the side plate.

31. A spreading device according to claim 30, wherein: The side plate is provided with a through hole, one end of the auger is arranged at the through hole, the auger transfers the material to the through hole, and the material can contact the spinner disc through the through hole, so as to be spread.

32. An unmanned aerial vehicle, provided with a spreading device according to any one of claims 18-31.

33. The drone of claim 32, wherein: The swinging plane of the spinning disk is parallel to the yaw axis or the roll axis of the UAV.

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