Sowing device, sowing device and agricultural unmanned aerial vehicle

Abstract

The utility model provides a sowing device, a sowing device and an agricultural unmanned aerial vehicle, and relates to the technical field of agricultural machinery. The sowing device comprises a driver, a shell, a throwing disc and two pressure elastic pieces, wherein the throwing disc is in transmission connection with the driver. And the projecting disc can swing back and forth under the driving of forward and reverse rotation of the driver so as to spread out the materials. One end of the pressure elastic piece is rotationally connected with the projecting disc, and the other end is connected with the shell. The projection of the area swept by the throwing disc in the swinging process on the shell is not overlapped with the projection of the pressure elastic piece on the shell. The spreading device is simple in structure, part of kinetic energy in the swinging process of the throwing disc can be converted into elastic potential energy of the pressure elastic piece, the elastic potential energy facilitates acceleration of the throwing disc in the acceleration stage and deceleration of the throwing disc in the deceleration stage, and therefore the power of a driver for driving the throwing disc is reduced, loss is reduced, and the heat productivity of the driver is reduced.

Description

Technical Field

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

[0002] Existing spreaders utilize a motor's rotational motion to convert it into a reciprocating oscillation of a disc, allowing the disc to spread the material. Currently, the motor is typically connected to the disc via a crank-connecting rod mechanism. The motor only needs to rotate rapidly in one direction, and the crank-connecting rod mechanism converts the motor's circular motion into the disc's reciprocating oscillation. However, this transmission method is complex, faces numerous reliability challenges, and is relatively expensive. Utility Model Content

[0003] The objectives of the present utility model include, for example, providing a spreader, a spreading device and an agricultural drone, which can simplify the structure of the spreader, reduce the power of the driver, reduce losses, reduce the heat generation of the driver, and help extend the service life and reliability of the driver.

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

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

[0006] Driver;

[0007] case;

[0008] A spinning disc is connected to the driver in a transmission manner; the spinning disc can swing back and forth under the alternating forward and reverse rotation of the driver to spread the material;

[0009] Two pressure elastic members, the two pressure elastic members are respectively arranged on both sides of the rotation center of the spinner disc; one end of the pressure elastic member is rotatably connected to the spinner disc, and the other end is connected to the housing;

[0010] The projection of the area swept by the spinning disc during the swinging process on the housing does not overlap with the projection of the pressure elastic member on the housing.

[0011] In an optional embodiment, the axis of symmetry of the spinning disk is in a vertical state, and the two pressure elastic members are symmetrically arranged about the axis of symmetry of the spinning disk.

[0012] In an optional embodiment, the spreader further includes a swing arm, one end of which is transmission-connected to the spinner disc, and the other end of which is transmission-connected to the driver; the pressure elastic member is rotationally connected to the swing arm.

[0013] In an optional embodiment, protrusions are respectively provided on both sides of the swing arm, and the pressure elastic member is hinged to the protrusions.

[0014] In an optional embodiment, the pressure elastic member includes an elastic member and a first shaft and a second shaft that are movably connected, the first shaft is hinged to the protrusion, and the second shaft is connected to the shell; one end of the elastic member is connected to the first shaft, and the other end is connected to the second shaft.

[0015] In an optional embodiment, two protrusions are provided on each side of the swing arm, and a first fixed shaft is connected between the two protrusions; a first connecting ring is provided at one end of the first shaft away from the second shaft, and the first connecting ring is sleeved on the first fixed shaft;

[0016] A second connecting ring is provided at one end of the second shaft away from the first shaft, a second fixed shaft is connected to the housing, and the second connecting ring is sleeved on the second fixed shaft.

[0017] In an optional embodiment, a first stop ring is provided on the first shaft, a second stop ring is provided on the second shaft, and the elastic member is provided between the first stop ring and the second stop ring and abuts against the first stop ring and the second stop ring respectively.

[0018] In an optional embodiment, during the swinging process of the spinning disc, the two pressure elastic parts are always in a compressed state; when the spinning disc is in the middle position, the elastic potential energy difference between the two pressure elastic parts is zero; when the spinning disc is in the extreme position, the compression amount of the pressure elastic part close to the extreme position is greater, and the compression amount of the pressure elastic part on the other side is smaller.

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

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

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

[0022] The spreader provided by the present invention employs a driver that alternates forward and reverse rotations to directly drive the spinning disc to reciprocate, eliminating the conventional crank-connecting rod structure, resulting in a simpler structure and higher power transmission efficiency. Furthermore, a pressure elastic member is rotatably connected to the spinning disc. During the reciprocating swing of the spinning disc, part of the kinetic energy of the spinning disc is converted into elastic potential energy of the pressure elastic member. During the spinning disc's acceleration phase, the elastic potential energy helps the spinning disc accelerate. During the spinning disc's deceleration phase, the elastic potential energy helps the spinning disc decelerate. This reduces the power consumption of the driver that drives the spinning disc, reduces losses, and reduces the heat generated by the driver. This helps extend the life of the driver and improves its reliability.

[0023] The spreading device provided by the embodiment of the utility model, including the above-mentioned spreader, can reduce the power consumption of the driver and improve the reliability of the driver operation, thereby making the spreading operation efficiency of the spreading device higher. In addition, the structure is simpler, which is conducive to reducing costs.

[0024] The agricultural drone provided by the embodiment of the present invention includes the above-mentioned sowing device. The sowing device is mounted on the drone, which can improve working efficiency and quickly increase the sowing range. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0028] Figure 3 A schematic cross-sectional view of a spreader according to an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the distribution structure of the pressure elastic members of the spreader provided by an embodiment of the present utility model;

[0030] Figure 5 A schematic diagram of the connection structure between the spinning disc and the housing of the spreader provided in an embodiment of the utility model;

[0031] Figure 6 A schematic structural diagram of a swing arm of a spreader from a first perspective provided by an embodiment of the utility model;

[0032] Figure 7 A schematic structural diagram of a swing arm of a spreader from a second perspective provided by an embodiment of the utility model;

[0033] Figure 8 A schematic structural diagram of a pressure elastic member of a spreader provided by an embodiment of the present utility model;

[0034] Figure 9 This is a schematic cross-sectional view of the pressure elastic member of the spreader provided in an embodiment of the present utility model.

[0035] Icons: 100-spreader; 110-driver; 111-drive shaft; 120-housing; 130-spinner; 140-pressure elastic member; 141-elastic member; 142-first shaft; 143-first connecting ring; 144-first stop ring; 145-second shaft; 146-second connecting ring; 147-second stop ring; 151-first fixed shaft; 152-second fixed shaft; 153-protective cover; 160-reducer; 161-output shaft; 162-first gear; 163-second gear; 170-swing arm; 171-shaft hole; 172-through hole; 173-spline; 174-bump; 175-mounting hole; 181-connecting hole; 182-locking fixture. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0038] 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.

[0039] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0040] 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.

[0041] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0042] Please refer to Figures 1 to 4 This embodiment provides a spreader 100 that utilizes a driver 110 to directly drive a spinning disc 130 to reciprocate by alternately rotating forward and reverse. This eliminates the need for a conventional crank-connecting rod structure, resulting in a simpler structure and higher power transmission efficiency. Furthermore, a portion of the kinetic energy of the spinning disc 130 during its swinging motion is converted into elastic potential energy of the pressure elastic member 140. This elastic potential energy helps the spinning disc 130 accelerate during its acceleration phase and decelerate during its deceleration phase, thereby reducing the power consumption of the driver 110 driving the spinning disc 130, thereby reducing losses and heat generation of the driver 110.

[0043] This spreader 100 comprises a driver 110, a housing 120, a spinning disc 130 and two pressure elastic members 140. The spinning disc 130 is in transmission connection with the driver 110. In the present embodiment, the driver 110 directly drives the spinning disc 130 to swing back and forth in alternating forward and reverse rotations to spread the material. The original crank-connecting rod structure has been omitted, the structure is simpler, and the power transmission efficiency is higher. The two pressure elastic members 140 are respectively located on both sides of the rotation center of the spinning disc 130. One end of the pressure elastic member 140 is rotationally connected to the spinning disc 130, and the other end is connected to the housing 120. The projection of the area swept by the spinning disc 130 during the swinging process on the housing 120 does not overlap with the projection of the pressure elastic member 140 on the housing 120. The spreader 100 can convert part of the kinetic energy of the spinning disc 130 during the swinging process into the elastic potential energy of the pressure elastic member 140. The elastic potential energy helps the spinning disc 130 to speed up during the acceleration phase and decelerate during the deceleration phase, thereby reducing the power of the driver 110 that drives the spinning disc 130 to rotate, reducing losses, and reducing the heat generated by the driver 110.

[0044] Combine Figure 5It should be noted that the two pressure elastic members 140 need to be arranged on opposite sides of the spinning disc 130 in the circumferential direction. The vertex of the angle formed by the two pressure elastic members 140 is approximately the rotation center A of the spinning disc 130. This arrangement more efficiently converts the rotational kinetic energy of the spinning disc 130 into elastic potential energy, and the elastic potential energy is more effectively exerted on the acceleration or deceleration of the spinning disc 130. This reduces the likelihood of the spinning disc 130 from stalling during rotation, and allows the spinning disc 130 to swing more smoothly, which facilitates uniform material dispersal and improves dispersal efficiency.

[0045] Optionally, the two pressure elastic members 140 are arranged at an angle, with the angle B being between 5 and 170 degrees. For example, the preferred range is 40 to 140 degrees. Of course, the angle formed by the two pressure elastic members 140 can be designed to any value between 5 and 170 degrees based on actual needs, and is not specifically limited here.

[0046] Assuming that the rotation center of the disk 130 is the center of the housing 120, the disk 130 swings from 0 to 180 degrees. The disk 130 is located in the lower half of the housing 120 and swings. The two pressure elastic members 140 are preferably arranged in the upper half of the housing 120.

[0047] Optionally, the axis of symmetry of the spinning disc 130 is in a vertical state, and the two pressure elastic members 140 are symmetrically arranged about the axis of symmetry of the spinning disc 130. The position where the spinning disc 130 has the highest speed during the swinging process is the middle position, which is the position where the axis of symmetry of the spinning disc 130 is in a vertical state. The two pressure elastic members 140 are symmetrically arranged so that when the spinning disc 130 is in the middle position, the forces on both sides cancel each other out, and the elastic potential energy difference of the two pressure elastic members 140 is zero. This arrangement is conducive to the stable swinging of the spinning disc 130 during the swinging process, mitigating the swinging shock or jamming. Moreover, the spinning disc 130 can throw materials more evenly when swinging in the forward and reverse directions.

[0048] Optionally, during the swinging process of the spinning disc 130, the two pressure elastic members 140 are always in a compressed state. When the spinning disc 130 is in the middle position, the elastic potential energy difference between the two pressure elastic members 140 is zero. When the spinning disc 130 is in the limit position, the compression amount of the pressure elastic member 140 near the limit position is larger, and the compression amount of the pressure elastic member 140 on the other side is smaller. What the pressure elastic member 140 in the present embodiment adopts is a compression spring.

[0049] Optionally, the spreader 100 further includes a speed reducer 160 and a swing arm 170. One end of the swing arm 170 is in transmission connection with the spinning disc 130, and the other end is in transmission connection with the driver 110; the pressure elastic member 140 is rotatably connected to the swing arm 170. In this embodiment, the driver 110 is a motor. The power of the motor is directly transmitted to the spinning disc 130 after passing through the speed reducer 160, that is, the motor directly drives the spinning disc 130 to rotate, eliminating structures such as a crank connecting rod, resulting in a simpler structure and higher power transmission efficiency.

[0050] Specifically, reducer 160 utilizes a gear transmission. It includes an output shaft 161 and a first gear 162 and a second gear 163 that mesh with each other. The first gear 162 is mounted on the motor's drive shaft 111, and the second gear 163 is connected to the output shaft 161. Rotation of the motor's drive shaft 111 drives the first gear 162, which in turn drives the second gear 163 and the output shaft 161 to rotate as a whole.

[0051] Combine Figure 6 and Figure 7 One end of the swing arm 170 is provided with an axial hole 171 for mounting the output shaft 161, and a through hole 172 extending through the swing arm 170. The axes of the axial hole 171 and the through hole 172 are perpendicular to each other. The other end of the swing arm 170 is provided with a spline 173 for connecting to the spinner 130. After the output shaft 161 of the reducer 160 is inserted into the axial hole 171, a push rod (not shown) is inserted into each end of the through hole 172. The two push rods abut the output shaft 161 from different directions to achieve a fixed connection between the output shaft 161 and the swing arm 170, thereby realizing power transmission.

[0052] Optionally, the cross-section of shaft hole 171 is a rounded rectangular shape. That is, shaft hole 171 is not a circular hole but rather has straight sides. The cross-sectional shape of output shaft 161 is adapted to the cross-sectional shape of shaft hole 171. This arrangement prevents relative rotation of output shaft 161 after insertion into shaft hole 171, improving connection reliability and enhancing power transmission efficiency.

[0053] Optionally, a protrusion 174 is provided on each side of the swing arm 170, and the pressure elastic member 140 is hingedly connected to the protrusion 174. The protrusion 174 is provided at one end of the swing arm 170 having the shaft hole 171, and extends in a direction perpendicular to the axis of the swing arm 170. The protrusions 174 on both sides are symmetrically arranged along the axis. In this embodiment, each side of the swing arm 170 is provided with two spaced protrusions 174, each of which has a mounting hole 175. The mounting holes 175 on the two protrusions 174 on the same side are arranged opposite each other.

[0054] Of course, in some other embodiments, there may be only one protrusion 174 on each side of the swing arm 170, which is not specifically limited here.

[0055] Combine Figure 8 and Figure 9Optionally, the pressure elastic member 140 includes an elastic member 141 and a first shaft 142 and a second shaft 145 that are movably connected. The first shaft 142 and the second shaft 145 can move away from or closer to each other in the axial direction. Optionally, the first shaft 142 is sleeved on the outer surface of the second shaft 145, or the second shaft 145 is sleeved on the outer surface of the first shaft 142. The first shaft 142 is hinged to the protrusion 174, and the second shaft 145 is connected to the housing 120. One end of the elastic member 141 is connected to the first shaft 142, and the other end is connected to the second shaft 145.

[0056] A first fixed shaft 151 is connected between the two projections 174. The end of the first shaft 142 away from the second shaft 145 is provided with a first connecting ring 143, which is sleeved on the first fixed shaft 151. The end of the second shaft 145 away from the first shaft 142 is provided with a second connecting ring 146, which is connected to the second fixed shaft 152 on the housing 120, and is sleeved on the second fixed shaft 152. It should be noted that in order to reduce the resistance during the rotation of the spinning disc 130, ensure the smoothness of the swing, and reduce the energy consumption of the motor, the first fixed shaft 151 and the first connecting ring 143 are relatively rotatable. The second fixed shaft 152 and the second connecting ring 146 are relatively rotatable. Of course, it is understandable that since the position of the swing arm 170 on the housing 120 is relatively fixed, the second fixed shaft 152 is fixedly connected to the housing 120, and therefore the range of relative rotation allowed is relatively small.

[0057] Optionally, a first stop ring 144 is provided on the first shaft 142, and a second stop ring 147 is provided on the second shaft 145. The elastic member 141 is disposed between the first stop ring 144 and the second stop ring 147, and abuts against the first stop ring 144 and the second stop ring 147, respectively. The elastic member 141 is a pressure spring. The elastic member 141 is sleeved on the first shaft 142 and the second shaft 145. The first stop ring 144 and the second stop ring 147 respectively limit the elastic member 141. Since the elastic member 141 is always in a compressed state in this embodiment, i.e., it has a certain amount of preload, there is no need to additionally fix the ends of the spring (such as by welding or hanging the ends of the spring to the first and second stop rings, etc.). The first and second stop rings only need to abut against the elastic member 141 to keep the elastic member 141 fixed. This also facilitates subsequent maintenance, assembly, disassembly, and replacement.

[0058] Of course, in some other embodiments, the two ends of the elastic member 141 may also be fixedly connected to the first shaft 142 and the second shaft 145 respectively, such as by bonding, welding, clamping, riveting, hanging or bolting.

[0059] Optionally, to improve the reliability of the connection of the spinning disc 130, the spinning disc 130 is axially limited. The spinning disc 130 and the swing arm 170 are respectively provided with interconnecting connecting holes 181. The spinning disc 130 and the swing arm 170 are fixedly connected by a locking member 182 to improve the reliability of the structure. The locking member 182 includes but is not limited to a screw, a bolt, or a pin.

[0060] Optionally, the pressure elastic member 140 is provided with a protective cover 153 , which is fixedly connected to the housing 120 to protect the pressure elastic member 140 .

[0061] In this embodiment, the spinner disc 130 and the pressure elastic member 140 are located on either side of the housing 120 along the axis of the swing arm 170. The housing 120 acts as a barrier, further preventing material in the spinner disc 130 from entering the elastic member 141 and causing jamming, thereby increasing the service life of the elastic member 141. Of course, in other embodiments, the pressure elastic member 140 and the spinner disc 130 may also be located on the same side of the housing 120, which is not specifically limited here.

[0062] The working principle of the spreader 100 provided in this embodiment is as follows:

[0063] The power of the motor is transmitted to the reducer 160, and the output shaft 161 of the reducer 160 drives the swing arm 170 to rotate. The swing arm 170 and the throwing plate 130 realize power transmission through the spline 173, thereby realizing the rotation of the throwing plate 130. The motor rotates forward and reverse alternately, thereby driving the throwing plate 130 to swing back and forth.

[0064] It will be appreciated that the disc 130 will pass through three positions during the reciprocating swing process, namely the left limit position, the middle position and the right limit position, wherein one of the pressure elastic member 140 is positioned at the left side of the middle position, and another pressure elastic member 140 is positioned at the right side of the middle position.

[0065] When the spinner 130 is located at the middle position, both pressure elastic members 140 are in a compressed state, and the elastic potential energy difference between the two is zero.

[0066] When the spinning disc 130 swings from the middle position to the left limit position, that is, it is in the deceleration stage, the deformation of the left elastic member 141 becomes larger and larger, and the deformation of the right elastic member 141 becomes smaller and smaller. However, the right elastic member 141 is also in a compressed state, which helps to decelerate the spinning disc 130.

[0067] When the disk 130 swings from the left limit position to the middle position, it is in the acceleration stage. The elastic member 141 on the left releases elastic potential energy, and the compression amount becomes smaller and smaller; the deformation amount of the elastic member 141 on the right becomes larger and larger, which is conducive to the acceleration of the disk 130 during the swing.

[0068] When the spinning disc 130 swings from the middle position to the right limit position, the deformation of the right elastic member 141 becomes larger and larger, while the deformation of the left elastic member 141 becomes smaller and smaller. However, the left elastic member 141 is also in a compressed state, which is beneficial to the deceleration of the spinning disc 130 during the swing.

[0069] When the spinning disc 130 swings from the right limit position to the middle position, the right elastic member 141 releases elastic potential energy and the compression amount becomes smaller and smaller; the deformation amount of the left elastic member 141 becomes larger and larger, which is conducive to the acceleration of the spinning disc 130 during the swing.

[0070] As can be seen from this, the motor alternates forward and reverse rotations and directly drives the disk 130 to swing back and forth, and the motor needs continuous emergency stop and reversing at work. After the pressure elastic member 140 is set, it is conducive to the disk 130 in the swing process, and the acceleration phase is accelerated quickly and the deceleration phase is decelerated quickly, thereby can reduce the operating power and loss of the motor, reduce the heat generation of the motor, and help extend the service life of the motor.

[0071] The present invention also provides a spreading device comprising a material box, a conveying assembly, and the aforementioned spreader 100. The conveying assembly's feed end is connected to the material box, and its discharge end is connected to the spreader 100. The conveying assembly is used to transport material from the material box to the spinner 130 of the spreader 100, thereby distributing the material from the spreader 100. The conveying assembly includes, but is not limited to, an auger conveyor.

[0072] The present invention also provides an agricultural drone comprising a drone and the aforementioned spreading device, with the spreading device mounted on the drone. Leveraging the drone's flight capabilities, the spreading device's operating range and efficiency are increased. This reduces the power consumption and heat generation of the driver 110, thereby improving battery life and extending the drone's range.

[0073] In summary, the spreader 100, spreading device, and agricultural drone provided by the embodiments of the present invention have the following beneficial effects, including:

[0074] In the spreader 100 provided by the embodiment of the utility model, the pressure elastic member 140 is rotatably connected to the spinning disc 130. During the reciprocating swing of the spinning disc 130, part of the kinetic energy of the spinning disc 130 is converted into the elastic potential energy of the pressure elastic member 140. During the acceleration phase of the spinning disc 130, the elastic potential energy can help the spinning disc 130 accelerate. During the deceleration phase of the spinning disc 130, the elastic potential energy can help the spinning disc 130 decelerate. This reduces the power of the driver 110 that drives the spinning disc 130, reduces losses, and reduces the heat generated by the driver 110. This is conducive to extending the service life of the driver 110 and improving the reliability of the driver 110. It is also conducive to extending the battery life. By adopting the driver 110 to directly drive the spinning disc 130 to rotate, structures such as the crank connecting rod of the prior art are omitted, the power transmission efficiency is higher, and it is conducive to reducing the energy consumption of the motor. The structure is simplified, the volume is smaller, and the weight is lighter.

[0075] The spreading device provided by the embodiment of the present invention, including the above-mentioned spreader 100, can reduce the power consumption of the driver 110 and improve the reliability of the operation of the driver 110, thereby making the spreading operation efficiency of the spreading device higher.

[0076] The agricultural drone provided by the present invention includes the aforementioned spreading device. Mounting the spreading device on the drone can improve operational efficiency and rapidly expand the spreading range. This reduces the power consumption and heat generation of the driver 110, thereby improving battery life and extending the drone's range.

[0077] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A spreader, characterized in that: include: Driver (110); Housing (120); A spinning disc (130) is connected to the driver (110) in a transmission manner. The spinning disc (130) can swing back and forth under the alternating forward and reverse rotation of the driver (110) to spread the material. Two pressure elastic members (140), the two pressure elastic members (140) are respectively arranged on both sides of the rotation center of the spinner (130); one end of the pressure elastic member (140) is rotatably connected to the spinner (130), and the other end is connected to the housing (120); The projection of the area swept by the spinning disc (130) during the swinging process on the housing (120) does not overlap with the projection of the pressure elastic member (140) on the housing (120).

2. The spreader according to claim 1, characterized in that The symmetry axis of the spinning disc (130) is in a vertical state, and the two pressure elastic members (140) are symmetrically arranged about the symmetry axis of the spinning disc (130).

3. The spreader according to claim 1, characterized in that The spreader further comprises a swing arm (170), one end of which is transmission-connected to the spinner (130) and the other end of which is transmission-connected to the driver (110); the pressure elastic member (140) is rotationally connected to the swing arm (170).

4. The spreader according to claim 3, characterized in that Both sides of the swing arm (170) are respectively provided with protrusions (174), and the pressure elastic member (140) is hinged to the protrusions (174).

5. The spreader according to claim 4, characterized in that The pressure elastic member (140) includes an elastic member (141) and a first shaft (142) and a second shaft (145) that are movably connected, wherein the first shaft (142) is hinged to the protrusion (174), and the second shaft (145) is connected to the shell (120); one end of the elastic member (141) is connected to the first shaft (142), and the other end is connected to the second shaft (145).

6. The spreader according to claim 5, characterized in that Two protrusions (174) are provided on each side of the swing arm (170), and a first fixed shaft (151) is connected between the two protrusions (174); a first connecting ring (143) is provided at one end of the first shaft (142) away from the second shaft (145), and the first connecting ring (143) is sleeved on the first fixed shaft (151); A second connecting ring (146) is provided at one end of the second shaft (145) away from the first shaft (142), a second fixed shaft (152) is connected to the housing (120), and the second connecting ring (146) is sleeved on the second fixed shaft (152).

7. The spreader according to claim 5, characterized in that A first stop ring (144) is provided on the first shaft (142), a second stop ring (147) is provided on the second shaft (145), and the elastic member (141) is provided between the first stop ring (144) and the second stop ring (147), and abuts against the first stop ring (144) and the second stop ring (147) respectively.

8. The spreader according to any one of claims 1 to 7, characterized in that During the swinging process of the spinning disc (130), the two pressure elastic members (140) are always in a compressed state; when the spinning disc (130) is in a neutral position, the elastic potential energy difference between the two pressure elastic members (140) is zero; when the spinning disc (130) is in a limit position, the compression amount of the pressure elastic member (140) close to the limit position is greater, and the compression amount of the pressure elastic member (140) on the other side is smaller.

9. A spreading device, characterized in that: The invention comprises a material box, a conveying assembly and a spreader according to any one of claims 1 to 8, wherein an inlet end of the conveying assembly is connected to the material box, and an outlet end of the conveying assembly is connected to the spreader.

10. An agricultural drone, characterized in that: It comprises a drone and the spreading device according to claim 9, wherein the spreading device is carried on the drone.

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