Sowing apparatus and system, and unmanned device

Abstract

A sowing apparatus (020) and system (110), and an unmanned device are provided. The sowing apparatus (020) can be used for a sowing system (110) of an unmanned device. The sowing apparatus (020) comprises a motor (200), a projecting disc (300), and an elastic member (510). The projecting disc (300) is connected to an output shaft of the motor (200), and when the sowing apparatus (020) is in operation, the output shaft of the motor (200) drives the projecting disc (300) to swing back and forth by means of forward and reverse rotation. A first end of the elastic member (510) is connected to a fixed position and is rotatably connected to an entity at the fixed position, and a second end of the elastic member (510) is rotatably connected to the projecting disc (300) or a swing member that swings synchronously with the projecting disc (300). When the projecting disc (300) swings, the second end of the elastic member (510) swings along with the projecting disc (300), swinging motion of the projecting disc (300) can be converted into axial deformation of the elastic member (510), and the elastic member (510) can drive the projecting disc (300) to swing in reverse when releasing elastic potential energy. The described sowing apparatus (020) can reduce power consumption of the motor (200), improve the problem of serious heat generation of the motor (200), and can ensure that the elastic potential energy released by the elastic member (510) is fully converted into kinetic energy of reverse swinging of the projecting disc (300).

Description

Spreading device, system and unmanned device

[0001] The present disclosure claims priority to the following prior patents:

[0002] (1) The priority of the Chinese patent application with the application number 202411353729.7 and the invention name "Spreading device, system and unmanned device" filed on September 26, 2024, to the State Intellectual Property Office of China;

[0003] (2) The priority of the Chinese patent application with the application number 202422365312.4 and the application name "Spreading device, system and unmanned device" filed on September 26, 2024, to the State Intellectual Property Office of China;

[0004] (3) The priority of the Chinese patent application with the application number 202411353726.3 and the application name "Spreading device, system and unmanned device" filed on September 26, 2024, to the State Intellectual Property Office of China;

[0005] (4) The priority of the Chinese patent application with the application number 202422365276.1 and the application name "Spreading device, system and unmanned device" filed on September 26, 2024, to the State Intellectual Property Office of China;

[0006] (5) The priority of the Chinese patent application with the application number 202411353727.8 and the application name "Spreading device, system and unmanned device" filed on September 26, 2024, to the State Intellectual Property Office of China;

[0007] (6) The priority of the Chinese patent application with the application number 202422365293.5 and the application name "Spreading device, system and unmanned device" filed on September 26, 2024, to the State Intellectual Property Office of China;

[0008] The entire contents of the above prior patents are hereby incorporated by reference in the present disclosure. TECHNICAL FIELD

[0009] The present disclosure relates to the technical field of unmanned device, in particular, relates to a spreading device, system and unmanned device. BACKGROUND

[0010] Unmanned devices, such as drones or unmanned vehicles, are widely used in the field of plant protection technology, and can specifically include seed sowing, watering and other operations. The unmanned device for sowing operations of seeds, fertilizers and other materials needs to carry a sowing system on the unmanned device body. The sowing system usually includes a material box, a feeding device and a sowing device. The material box is connected with the sowing device through the feeding device. The material box is used to store seeds and other materials. The feeding device is used to deliver the materials output from the material box to the sowing device. The sowing device is used to sow the materials. The sowing device includes a motor and a flail wheel connected with the motor in transmission. The motor drives the flail wheel to reciprocate, so that the materials can be hit out.

[0011] In the related art, the sowing device adopts a swing type flail wheel. The motor is connected with the flail wheel through a crank connecting rod mechanism. The motor only needs to rotate in a single direction at a high speed, so as to drive the crank connecting rod mechanism to convert the circular motion of the motor into the reciprocating swing of the flail wheel. However, this sowing device has the following defects: complex structure, many parts, many challenges in reliability, and high cost; low energy utilization rate, and high power consumption of the flail wheel motor.

[0012] The above defects of the sowing device in the related art not only increase the operating cost, but also cause potential burden to the environment. The flail wheel motor has high power consumption and serious heating, and the battery has short endurance, which indirectly aggravates the carbon emission problem. The complex structure design often needs more metal materials and lubricants, which may cause resource waste and environmental pollution. SUMMARY

[0013] The present disclosure provides a novel swing type flail wheel sowing device. The output shaft of the motor directly drives the flail wheel. The reciprocating swing of the flail wheel can be realized by controlling the forward and reverse rotation of the output shaft of the motor. However, the reciprocating swing of the flail wheel driven by the forward and reverse rotation of the output shaft of the motor needs the motor to stop and reverse accelerate constantly, which leads to high power consumption and serious heating of the motor. Not only does it affect the endurance of the battery providing power to the motor, but it also easily burns the motor. Therefore, the present disclosure also provides a sowing device which can be used in the sowing system of an unmanned device, and the sowing device can reduce the power consumption of the motor, improve the problem of serious heating of the motor, thereby prolonging the endurance of the battery providing power to the motor, effectively improving the problem of motor burnout, and ensuring that the elastic potential energy released by the elastic member is fully converted into the kinetic energy of the reverse swing of the flail wheel.

[0014] Embodiments of the present disclosure are implemented as follows:

[0015] In a first aspect, the present disclosure provides a sowing device, comprising:

[0016] a motor;

[0017] a flail wheel connected with the output shaft of the motor, wherein when the sowing device is working, the output shaft of the motor drives the flail wheel to reciprocate by forward and reverse rotation; and

[0018] the first end of the elastic member is connected to a fixed position and rotationally connected to an entity at the fixed position, and the second end of the elastic member is rotationally connected to the swing member that swings synchronously with the swing disc;

[0019] When the swing disc swings, the second end of the elastic member swings with the swing disc, the swing movement of the swing disc can be converted into axial deformation of the elastic member, and the elastic member can drive the swing disc to swing reversely when releasing the elastic potential energy.

[0020] In an optional embodiment, the swing member includes a swing arm member arranged on the output shaft of the motor, and the second end of the elastic member is rotationally connected to an end of the swing arm member.

[0021] In an optional embodiment, the second end of the elastic member is provided with a connecting head, the connecting head is provided with a first shaft hole, the swing arm member includes two spaced-apart clamping arms, the clamping arms are provided with second shaft holes, the connecting head is arranged between the two clamping arms, and the first shaft hole and the second shaft hole are opposite and pass through a first rotating shaft.

[0022] In an optional embodiment, the swing disc is connected to the output shaft of the motor through the swing arm member.

[0023] In an optional embodiment, the spreading device further includes a support member, and the entity at the fixed position is the support member.

[0024] In an optional embodiment, the support member includes a mounting wall arranged radially of the output shaft of the motor, and the fixed position is located on the mounting wall.

[0025] In an optional embodiment, a connecting seat is arranged at the fixed position of the mounting wall, and the first end of the elastic member is rotationally connected to the support member through the connecting seat.

[0026] In an optional embodiment, the first end of the elastic member is provided with a connecting head, the connecting head is provided with a first shaft hole, the connecting seat is provided with a plug hole and a third shaft hole in communication with the plug hole, the connecting head is plugged into the plug hole, and the first shaft hole and the third shaft hole are opposite and pass through a second rotating shaft.

[0027] In an optional embodiment, the elastic member is arranged on a plane parallel to the swing plane of the swing disc, and the elastic member provides a direction of elastic force perpendicular to the axial direction of the output shaft of the motor.

[0028] In an optional embodiment, the elastic member includes a spring, both ends of the spring are provided with connecting heads, the connecting heads are provided with helical grooves, and the connecting heads are fixed to the spring when the coils of the spring are screwed into the helical grooves.

[0029] In an optional embodiment, the connecting head is connected with a stop edge, the end of the spring can abut against the stop edge, and the stop edge is used to prevent the spring from being displaced in the axial direction.

[0030] In an optional embodiment, the support has a first side and a second side distributed oppositely, the spinning disc is arranged on the first side, the motor is arranged on the second side, and the output shaft of the motor is connected with the spinning disc through the support.

[0031] In an optional embodiment, the spinning disc comprises a disc body and a flapper connected to one side of the disc body, the output shaft of the motor is connected with the disc body, the flapper swings with the disc body and is used for scattering the material, and the elastic member is located on the side of the disc body away from the flapper.

[0032] In an optional embodiment, the support is provided with a receiving groove, and the elastic member is at least partially located in the receiving groove.

[0033] In an optional embodiment, the scattering device further comprises a shielding cover, the shielding cover is connected with the support, the shielding cover is used for shielding the slot opening of the receiving groove, and the elastic member and the spinning disc are respectively located on the two sides of the shielding cover.

[0034] In an optional embodiment, the scattering device comprises at least two elastic members.

[0035] In an optional embodiment, the at least two elastic members comprise a first elastic member and a second elastic member, when the spinning disc is located at the center position, the length extension directions of the first elastic member and the second elastic member are both directed to the swing center of the spinning disc, and when the first elastic member and the second elastic member release the elastic potential energy, the first elastic member and the second elastic member cooperatively drive the spinning disc to swing reversely.

[0036] In an optional embodiment, the first elastic member and the second elastic member are centrally symmetrically distributed with respect to the swing center of the spinning disc.

[0037] In an optional embodiment, the first elastic member and the second elastic member are horizontally spaced apart.

[0038] In an optional embodiment, the at least two elastic members comprise a first elastic member and a second elastic member, and the first elastic member and the second elastic member are in a stretched state when the spinning disc is static and swings.

[0039] In a second aspect, the present disclosure provides a scattering system, comprising a material box and the scattering device of any one of the foregoing embodiments, the material box is connected with the scattering device, and the material in the material box is scattered by the scattering device.

[0040] In an optional embodiment, the scattering system further comprises a feeding device, the material box is connected with the scattering device through the feeding device, and the feeding device is used for receiving the material output by the material box and conveying the received material to the scattering device.

[0041] In a third aspect, the present disclosure provides an unmanned device, comprising an unmanned device body and the scattering system of any one of the foregoing embodiments, and the scattering system is arranged on the unmanned device body.

[0042] In a fourth aspect, the present disclosure provides a spreading device, comprising:

[0043] a motor;

[0044] a flail connected to an output shaft of the motor, the output shaft of the motor driving the flail to reciprocate when the spreading device is working; and

[0045] a first elastic member and a second elastic member, a first end of the first elastic member and a first end of the second elastic member are respectively connected to a fixed position and rotatably connected to an entity at the fixed position, a second end of the first elastic member and a second end of the second elastic member are rotatably connected to the flail or a swing member swinging synchronously with the flail, and the second end of the first elastic member and the second end of the second elastic member can swing with the flail;

[0046] when the flail is at a middle position, the length extension directions of the first elastic member and the second elastic member are both directed to a swing center of the flail;

[0047] when the flail swings, the swing of the flail is converted into axial deformation of the first elastic member and the second elastic member, and the first elastic member and the second elastic member can cooperatively drive the flail to swing reversely when releasing elastic potential energy.

[0048] In an optional embodiment, the flail is configured to reciprocate on both sides of a set axis a around a swing center thereof, and the first elastic member and the second elastic member are respectively located on both sides of the set axis a.

[0049] In an optional embodiment, when the flail is at the middle position, the first elastic member and the second elastic member are symmetrically distributed on both sides of the set axis a.

[0050] In an optional embodiment, when the flail is at the middle position, the length extension direction of the first elastic member coincides with the length extension direction of the second elastic member.

[0051] In an optional embodiment, the swing member comprises a swing arm member arranged on the output shaft of the motor, and the second end of the first elastic member and the second end of the second elastic member are respectively rotatably connected to both ends of the swing arm member.

[0052] In a fifth aspect, the present disclosure provides a spreading device, comprising:

[0053] a motor;

[0054] The swivel disc is connected to the output shaft of the motor. When the spreading device is working, the motor drives the swivel disc to swing back and forth by rotating in both directions.

[0055] Two elastic mechanisms are provided. When the swinging disc swings, the swinging motion of the swinging disc is converted into the axial deformation of each of the two elastic mechanisms. When the two elastic mechanisms release elastic potential energy, they can drive the swinging disc to swing in the opposite direction.

[0056] The radial forces exerted on the output shaft of the motor by the two elastic mechanisms can cancel each other out.

[0057] In an optional implementation, the two elastic mechanisms are centrally symmetrically distributed with respect to the swing center of the swivel disc.

[0058] In an optional embodiment, the elastic mechanism includes an elastic element, the first end of which is connected to a fixed position and rotatably connected to a solid at the fixed position, and the second end of which is rotatably connected to the swivel disc or a swinging element that swings synchronously with the swivel disc.

[0059] In an optional embodiment, the elastic mechanism includes an elastic element and a linear motion component. The linear motion components of the two elastic mechanisms are centrally symmetrically distributed with respect to the swing center of the swivel disc and are both driven by the swivel disc. Both linear motion components are used to convert the swing of the swivel disc into linear motion and respectively cause the corresponding elastic element to undergo axial deformation.

[0060] In an optional embodiment, the spreading device further includes a second swing arm that swings synchronously with the swivel disc; the linear motion component includes a first slide rail and a second slide rail; the end of the second swing arm is slidably engaged with the first slide rail; the first slide rail and the second slide rail are slidably engaged, and the extension directions of the first slide rail and the second slide rail are perpendicular; the elastic element is disposed on the corresponding first slide rail or second slide rail.

[0061] When the swing plate swings, the end of the second swing arm slides within the first slide rail and drives the first slide rail to slide along the second slide rail, so that the corresponding elastic element undergoes axial deformation.

[0062] In an optional embodiment, the linear motion component includes a slider, a third slide rail, and a swing arm. The slider is slidably engaged with the third slide rail, and the two ends of the swing arm are pivotally connected to the slider and the swivel disc, respectively. When the swivel disc swings and drives the swing arm to swing, the swing arm drives the slider to slide relative to the third slide rail, and the slider can cause the corresponding elastic element to undergo axial deformation.

[0063] The beneficial effects of the spreading device of the embodiments of the present disclosure include: the spreading device provided by the embodiments of the present disclosure comprises a motor, a flail plate and an elastic member, the flail plate is connected with an output shaft of the motor, and the output shaft of the motor drives the flail plate to reciprocate when the spreading device is working; the first end of the elastic member is connected to a fixed position and rotationally connected with an entity at the fixed position, and the second end of the elastic member is rotationally connected with the flail plate or a swinging member swinging synchronously with the flail plate; when the flail plate swings, the second end of the elastic member swings with the flail plate, the swinging movement of the flail plate can be converted into the axial deformation of the elastic member, and the elastic member can drive the flail plate to swing reversely when releasing the elastic potential energy. In this way, the variable length characteristic of the elastic member can be used to directly absorb and release energy in the process of the flail plate moving in a circular arc, the energy loss in the energy conversion process is small, that is, unnecessary energy loss is avoided, the energy conversion rate is improved, and more energy can be converted into the elastic potential energy of the elastic member, so that the elastic potential energy of the elastic member can be used to sufficiently reduce the energy consumption of the motor driving the flail plate to reciprocate.

[0064] The spreading system of the embodiments of the present disclosure comprises all the beneficial effects of the foregoing spreading device, for example: the variable length characteristic of the elastic member can be used to directly absorb and release energy in the process of the flail plate moving in a circular arc, the energy loss in the energy conversion process is small, that is, unnecessary energy loss is avoided, the energy conversion rate is improved, and more energy can be converted into the elastic potential energy of the elastic member, so that the elastic potential energy of the elastic member can be used to sufficiently reduce the energy consumption of the motor driving the flail plate to reciprocate.

[0065] The unmanned device of the embodiments of the present disclosure comprises all the beneficial effects of the foregoing spreading system, for example: the variable length characteristic of the elastic member can be used to directly absorb and release energy in the process of the flail plate moving in a circular arc, the energy loss in the energy conversion process is small, that is, unnecessary energy loss is avoided, the energy conversion rate is improved, and more energy can be converted into the elastic potential energy of the elastic member, so that the elastic potential energy of the elastic member can be used to sufficiently reduce the energy consumption of the motor driving the flail plate to reciprocate.

[0066] The spreading device provided by the present disclosure significantly reduces the energy consumption requirement of the motor through an innovative elastic energy storage mechanism. The elastic member recycles and utilizes the swinging energy of the flail plate, thereby reducing the overall power consumption, significantly extending the battery endurance time, and reducing the charging frequency and energy consumption. This improvement not only conforms to the current green, environmentally friendly and energy-saving concept, but also reduces the carbon footprint of agricultural equipment and helps achieve the carbon neutralization goal. The simplified structure of the present disclosure also reduces the dependence on lubricants, further reducing the potential impact on the ecosystem. Through the above technical solutions, the present disclosure not only improves the efficiency of agricultural operations, but also provides an adaptive solution for sustainable agricultural development. BRIEF DESCRIPTION OF DRAWINGS

[0067] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present disclosure, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.

[0068] Fig. 1 is a structural schematic diagram of a load support and a spreading system of an unmanned device in the embodiments of the present disclosure;

[0069] Fig. 2 is a partial structural schematic diagram of a spreading system in the embodiments of the present disclosure;

[0070] Fig. 3 is a structural schematic diagram of a spreading device in the embodiments of the present disclosure;

[0071] Fig. 4 is a schematic diagram of a disc pendulum reciprocating swing of a spreading device in the embodiments of the present disclosure;

[0072] Fig. 5 is an exploded structural schematic diagram of a spreading device in the embodiments of the present disclosure;

[0073] Fig. 6 is a partial structural schematic diagram of a spreading device in the embodiments of the present disclosure;

[0074] Fig. 7 is a schematic diagram of a disc pendulum reciprocating swing of a spreading device in other embodiments of the present disclosure;

[0075] Fig. 8 is a schematic diagram of a disc pendulum reciprocating swing of another spreading device in other embodiments of the present disclosure;

[0076] Fig. 9 is a partial structural schematic diagram of a spreading device in some embodiments of the present disclosure;

[0077] Fig. 10 is a sectional view of Fig. 9 in the A-A direction;

[0078] Fig. 11 is a structural schematic diagram of a connecting head in the embodiments of the present disclosure;

[0079] Fig. 12 is a structural schematic diagram of a swing arm in the embodiments of the present disclosure;

[0080] Fig. 13 is a structural schematic diagram of a spreading device in the embodiments of the present disclosure;

[0081] Fig. 14 is a schematic diagram of a disc pendulum reciprocating swing of a spreading device in other embodiments of the present disclosure;

[0082] Fig. 15 is a schematic diagram of a disc pendulum reciprocating swing of a spreading device in a related technical embodiment one;

[0083] Fig. 16 is a schematic diagram of a disc pendulum reciprocating swing of a spreading device in a related technical embodiment two;

[0084] FIG. 17 is a schematic diagram of the reciprocating swing of the flail of a related art third embodiment of the present application;

[0085] FIG. 18 is a schematic diagram of the structure of a related art third embodiment of the present application in which the elastic member is bent when the flail swings;

[0086] FIG. 19 is a schematic diagram of the structure of a first elastic member and a second elastic member on the same side of the set axis in other embodiments of the present application;

[0087] FIG. 20 is a schematic diagram of the structure of a related art third embodiment of the present application;

[0088] FIG. 21 is a schematic diagram of the structure of a single elastic mechanism of a related art third embodiment of the present application;

[0089] FIG. 22 is a schematic diagram of the reciprocating swing of the flail of a related art third embodiment of the present application;

[0090] FIG. 23 is a schematic diagram of the structure of a single elastic mechanism of a related art third embodiment of the present application;

[0091] FIG. 24 is a schematic diagram of the reciprocating swing of the flail of a related art third embodiment of the present application;

[0092] FIG. 25 is a schematic diagram of the structure of a single elastic mechanism of a related art third embodiment of the present application;

[0093] FIG. 26 is a schematic diagram of the structure of a non-central symmetric two elastic mechanism of a related art third embodiment of the present application;

[0094] FIG. 27 is a schematic diagram of the structure of a non-central symmetric two elastic mechanism of a related art third embodiment of the present application;

[0095] FIG. 28 is a schematic diagram of the structure of a related art third embodiment of the present application;

[0096] FIG. 29 is a force analysis diagram of the related art third embodiment of the present application in which the forces between the two elastic members cancel each other out;

[0097] Icon: 100 - load support; 110 - spreading system; 111 - material box; 112 - feeding device; 113 - material cover; 114 - material port; 020 - spreading device; 200 - motor; 201 - speed reducer; 300 - flail disc; 310 - disc body; 320 - flail; 400 - support; 410 - containing groove; 411 - mounting wall; 420 - connecting seat; 421 - plug hole; 422 - third shaft hole; 423 - second rotating shaft; 430 - shielding cover; 500 - elastic mechanism; 510 - elastic member; 511 - first elastic member; 512 - second elastic member; 520 - connecting head; 521 - first shaft hole; 522 - helical groove; 523 - blocking edge; 602 - second swing arm; 610 - swing arm member; 611 - clamping arm; 612 - second shaft hole; 613 - first rotating shaft; 700 - linear motion assembly; 711 - first sliding rail; 712 - second sliding rail; 713 - sliding block; 731 - sliding member; 732 - third sliding rail; 733 - swing rod; a - set axis. DETAILED DESCRIPTION

[0098] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some but not all of the embodiments of the present disclosure. The components of the embodiments of the present disclosure described and shown in the drawings can be arranged and designed in various different configurations.

[0099] Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the claimed present disclosure, but only represents selected embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative labor are within the scope of protection of the present disclosure.

[0100] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0101] In the description of the present disclosure, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present disclosure is usually placed, which is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0102] In the description of the present disclosure, it also needs to be explained that, unless explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0103] Please refer to FIG. 1, the present embodiment provides an unmanned device, which can be a drone; of course, in other embodiments, the unmanned device can also be an unmanned vehicle, which is not specifically limited here.

[0104] Please refer to FIG. 1 and FIG. 2, the unmanned device includes an unmanned device body and a sowing system 110 arranged on the unmanned device body. Specifically, the unmanned device body includes a load support 100, and the sowing system 110 is assembled on the load support 100; wherein the sowing system 110 includes a material box 111, a feeding device 112 and a sowing device 020, the material box 111 is assembled on the load support 100, and the material box 111 is connected with the sowing device 020 through the feeding device 112, the material box 111 is used for storing materials such as seeds, the feeding device 112 is used for receiving the materials output by the material box 111 and conveying the received materials to the sowing device 020, and the sowing device 020 is used for sowing the materials. The unmanned device body can be referred to as the unmanned aerial vehicle body.

[0105] In other embodiments, the material box 111 can not be connected with the sowing device 020 through the feeding device 112, that is, the materials output by the material box 111 do not need to be conveyed through the feeding device 112, but directly fall on the sowing device 020 for sowing.

[0106] Please refer to FIG. 2 and FIG. 3, the sowing device 020 of the present embodiment includes a material cover 113, a motor 200, a support 400 and a flail 300, the material cover 113 is provided with a material port 114, and the material cover 113 is connected between the feeding device 112 and the support 400; the flail 300 is located between the material cover 113 and the support 400; the motor 200 is assembled on the support 400, and the output shaft of the motor 200 is in transmission connection with the flail 300, for driving the flail 300 to reciprocate on both sides of a set axis a around the swing center of itself, and the flail 300 swinging can sow the materials falling between the material cover 113 and the support 400 from the material port 114.

[0107] Optionally, the support 400 has a first side and a second side oppositely distributed, the first side is opposite to the material cover 113, the spinning disc 300 is arranged on the first side, the motor 200 is arranged on the second side, and the output shaft of the motor 200 is connected with the spinning disc 300 through the support 400. In this way, the integration of the sowing device 020 is improved.

[0108] The spinning disc 300 comprises a disc body 310 and a paddle 320 connected to one side of the disc body 310, the output shaft of the motor 200 is connected with the disc body 310, the paddle 320 is opposite to the material port 114, and the paddle 320 swings with the disc body 310 and is used for sowing the material.

[0109] Optionally, in some embodiments, the motor 200 can be drivingly connected with the spinning disc 300 through the speed reducer 201, which is not specifically limited herein.

[0110] In the related art, the output shaft of the motor 200 is used to drive the spinning disc 300 to swing back and forth, which requires the motor 200 to constantly stop and reverse acceleration, resulting in great power consumption and serious heating of the motor 200. Not only does it affect the endurance of the battery providing power to the motor 200, but also it is easy to burn the motor 200.

[0111] To improve the above problems, please refer to FIG. 4, the spreading device 020 of the embodiment further comprises an elastic member 510, the first end of the elastic member 510 is connected to a fixed position and is rotationally connected with the entity at the fixed position. Optionally, the first end of the elastic member 510 is rotationally connected with the support member 400, that is, the entity at the fixed position refers to the support member 400. The second end of the elastic member 510 is rotationally connected with the flail 300 or the oscillating member that oscillates synchronously with the flail 300. When the flail 300 oscillates, the second end of the elastic member 510 oscillates with the flail 300, and at the same time, the second end also rotates around the position where it is connected. The first end of the elastic member 510 does not oscillate with the flail 300, but also rotates around the fixed position where it is connected. Therefore, the elastic member 510 can always maintain a straight shape during the oscillation of the second end, and the oscillation movement of the flail 300 can be converted into the axial deformation of the elastic member 510. When the elastic member 510 releases the elastic potential energy, it can drive the flail 300 to oscillate in the opposite direction. In this way, the elastic deformation of the elastic member 510 can be used to absorb and store energy, so that the oscillation frequency of the elastic member 510 and the flail 300 can be matched, and the flail 300 can be slowed down and accelerated in the opposite direction, thereby reducing the energy consumption of the motor 200 when it is suddenly stopped and accelerated in the opposite direction, improving the problem of serious heating of the motor 200, and thereby prolonging the endurance of the battery that provides power to the motor 200, effectively improving the problem of burning of the motor 200; Moreover, it is not necessary to additionally provide other movement conversion mechanisms to convert the circular motion of the flail 300 into linear motion (for example, a slide rail assembly, a gear and rack linear motion assembly, etc.), but the length-variable characteristic of the elastic member 510 is used to directly absorb and release energy during the circular motion, thereby avoiding unnecessary energy loss, and more energy can be converted into the elastic potential energy of the elastic member 510, so that the elastic potential energy of the elastic member 510 can be fully used to reduce the energy consumption of the motor 200 driving the flail 300 to reciprocate.

[0112] Optionally, please refer to FIG. 5, along the length extension direction of the oscillation axis of the flail 300 (i.e., the dashed line in FIG. 5), the elastic member 510 is located between the support member 400 and the flail 300, that is, the elastic member 510 is arranged on a plane parallel to the oscillation plane of the flail 300. Optionally, the elastic member 510 is located on the side of the disc body 310 of the flail 300 away from the flapper 320, and the elastic force provided by the elastic member 510 is perpendicular to the axial direction of the output shaft of the motor 200. In this way, the arrangement of the elastic member 510 can avoid interfering with the spreading of the material by the flail 300, and can ensure that the elastic potential energy of the elastic member 510 is converted into the power for the flail 300 to oscillate in the opposite direction as much as possible, thereby improving the energy conversion efficiency.

[0113] Of course, in other embodiments, the elastic member 510 can also be arranged on a plane that is not parallel to the oscillation plane of the flail 300.

[0114] Alternatively, in other embodiments, the first end of the elastic member 510 can also be rotationally connected with the load support 100, etc., which is not specifically limited here.

[0115] In the embodiment, please refer to FIG. 5 and FIG. 6, the swing member includes a swing arm member 610 arranged on the output shaft of the motor 200, the flail 300 is connected with the output shaft of the motor 200 through the swing arm member 610, and the second end of the elastic member 510 is rotationally connected with the end of the swing arm member 610; in this way, the elastic member 510 can reliably drive the flail 300 to swing in the reverse direction.

[0116] Optionally, the spreading device 020 includes two elastic members 510, which are respectively a first elastic member 511 and a second elastic member 512; along the length extension direction of the swing axis of the flail 300, the swing arm member 610 is located between the support member 400 and the flail 300, the middle part of the swing arm member 610 is connected with the output shaft of the motor 200, and the middle part of the swing arm member 610 is drivingly connected with the flail 300, so that the output shaft of the motor 200 is drivingly connected with the disc body 310 of the flail 300 through the swing arm member 610; the two ends of the length extension direction of the swing arm member 610 are respectively connected with the second end of the first elastic member 511 and the second end of the second elastic member 512. In this way, the two elastic members 510 can be used to reliably drive the flail 300 to swing in the reverse direction.

[0117] It should be understood that in other embodiments, the number of elastic members 510 can also be increased or decreased as needed, for example: please refer to FIG. 7, the spreading device 020 includes one elastic member 510; or, please refer to FIG. 8, the spreading device 020 includes four elastic members 510, etc., which is not specifically limited here.

[0118] The connection mode of the output shaft of the motor 200 and the swing arm member 610, and the connection mode of the swing arm member 610 and the flail 300 include but are not limited to insertion, clamping, welding, etc., which is not specifically limited here.

[0119] It should be understood that in other embodiments, the swing arm member 610 is connected to the output shaft of the motor 200, but is not connected with the flail 300, that is, the flail 300 is not drivingly connected with the output shaft of the motor 200 through the swing arm member 610.

[0120] In some embodiments, please refer to FIG. 9 and FIG. 10, the output shaft of the motor 200 is drivingly connected with the swing arm member 610 through the output shaft of the speed reducer 201, and the swing arm member 610 is connected with the flail 300, so that the driving force of the motor 200 can be transmitted to the flail 300 through the speed reducer 201 and the swing arm member 610, to drive the swing arm member 610 and the flail 300 to swing synchronously.

[0121] In this embodiment, referring to FIG. 6, the first elastic member 511 and the second elastic member 512 are symmetrically distributed with respect to the center of oscillation of the flywheel 300. When the flywheel 300 oscillates, the radial forces exerted by the first elastic member 511 and the second elastic member 512 on the output shaft of the motor 200 can cancel each other out, and the first elastic member 511 and the second elastic member 512 synchronously elongate or shorten. In this way, the problem of shaft breakage can be improved, i.e., the radial component of the force exerted by the first elastic member 511 on the output shaft of the motor 200 and the radial component of the force exerted by the second elastic member 512 on the output shaft of the motor 200 cancel each other out, and the problem of the output shaft of the motor 200 being pulled by the radial component of the force and thus being at risk of shaft breakage can be improved.

[0122] Of course, in the embodiment in which the number of elastic members 510 is two or more, it is not necessary for the plurality of elastic members 510 to be symmetrically distributed with respect to the center of oscillation of the flywheel 300, i.e., in other embodiments, the plurality of elastic members 510 need not be symmetrically distributed with respect to the center of oscillation of the flywheel 300. For example, in other embodiments, the plurality of elastic members 510 can be distributed on the same side of the set axis a; or, in other embodiments, the plurality of elastic members 510 can be asymmetrically distributed on both sides of the set axis a; or, the plurality of elastic members 510 can be symmetrically but not centrally symmetrically distributed on both sides of the set axis a, etc., and no specific limitation is made herein.

[0123] In this embodiment, please refer to FIG. 6, when the flywheel 300 is located at the middle position (the position of the flywheel in FIG. 6 is the middle position), the length extension direction of the elastic member 510 points to the swing center of the flywheel 300. Alternatively, when the flywheel 300 is located at the middle position, the length extension direction of both the first elastic member 511 and the second elastic member 512 points to the swing center of the flywheel 300, and the length extension direction of the first elastic member 511 coincides with the length extension direction of the second elastic member 512 and is perpendicular to the setting axis a, the first elastic member 511 and the second elastic member 512 are symmetrically distributed along the horizontal direction on both sides of the setting axis a; when the flywheel 300 swings, the swing of the flywheel 300 is converted into the axial deformation of each of the two elastic members 510, and the two elastic members 510 can cooperatively drive the flywheel 300 to swing reversely when releasing the elastic potential energy. In this way, the two elastic members 510 are not in a state of mutual resistance when releasing the elastic potential energy, but are in a state of mutual cooperation, which can improve the problem of energy conversion rate reduction, i.e., the problem that the elastic potential energy released by one of the elastic members 510 is simultaneously converted into the kinetic energy of the flywheel 300 and the elastic potential energy of the other elastic member 510, and further improve the problem of reduction of the conversion of the elastic potential energy of the elastic member 510 into the kinetic energy of the flywheel 300, so as to ensure that the motor 200 can reliably reduce the power consumption, i.e., through the centripetal installation of the elastic member 510, no matter which direction the flywheel 300 swings, the first elastic member 511 and the second elastic member 512 will be elongated at the same time, and the elastic potential energy released by the first elastic member 511 and the second elastic member 512 can provide the torque for reversely restoring the flywheel 300 to the middle position, so as to ensure that the first elastic member 511 and the second elastic member 512 can cooperate with each other rather than resist each other.

[0124] Of course, in other embodiments, the length extension direction of the elastic member 510 can not point to the swing center of the flywheel 300 when the flywheel 300 is located at the middle position; or in other embodiments, the length extension direction of both the first elastic member 511 and the second elastic member 512 points to the swing center of the flywheel 300 when the flywheel 300 is located at the middle position, the first elastic member 511 and the second elastic member 512 are symmetrically or asymmetrically distributed on both sides of the setting axis a, and the length extension direction of the first elastic member 511 does not coincide with the length extension direction of the second elastic member 512, nor is perpendicular to the setting axis a, which is not limited here.

[0125] Alternatively, the two elastic members 510 (i.e., the first elastic member 511 and the second elastic member 512) in this embodiment are similar in their own structures and the connection modes with the swing arm member 610 and the support member 400, and only one of the elastic members 510 is introduced in detail here.

[0126] Optionally, referring to FIG. 5, FIG. 11 and FIG. 12, the second end of the elastic member 510 is provided with a connecting head 520, the connecting head 520 is provided with a first shaft hole 521, the swing arm member 610 comprises two spaced apart clamping arms 611, the clamping arms 611 are provided with second shaft holes 612, the connecting head 520 is inserted between the two clamping arms 611, and the first shaft hole 521 and the second shaft hole 612 are opposite and provided with a first rotating shaft 613. In this way, the easy assembly and stability of the assembly of the elastic member 510 and the swing arm member 610 are ensured, and the second end of the elastic member 510 can rotate smoothly around the first rotating shaft 613.

[0127] Optionally, the support member 400 comprises a mounting wall 411 arranged in the radial direction of the output shaft of the motor 200, the fixed position is located on the mounting wall 411, and the second end of the elastic member 510 is rotationally connected with the mounting wall 411. In this way, the elastic member 510 can be reliably arranged between the flinger 300 and the support member 400, effectively avoiding the interference of the elastic member 510 with the flinger 300 to scatter the materials.

[0128] Optionally, a connecting seat 420 is arranged at the fixed position of the mounting wall 411, and the first end of the elastic member 510 is rotationally connected with the support member 400 through the connecting seat 420. Through the arrangement of the connecting seat 420, the reliability of the rotational connection between the first end of the elastic member 510 and the fixed position is ensured.

[0129] Optionally, the first end of the elastic member 510 is also provided with a connecting head 520, the connecting seat 420 is provided with an insertion hole 421 and a third shaft hole 422 in communication with the insertion hole 421, the connecting head 520 of the first end of the elastic member 510 is inserted into the insertion hole 421, and the first shaft hole 521 and the third shaft hole 422 are opposite and provided with a second rotating shaft 423. In this way, the easy assembly and stability of the assembly of the elastic member 510 and the connecting seat 420 are ensured, and the first end of the elastic member 510 can rotate smoothly around the second rotating shaft 423.

[0130] The way in which any end of the elastic member 510 is connected with the corresponding connecting head 520 can be selected as needed; referring to FIG. 5 and FIG. 11, in the embodiment, the elastic member 510 comprises a spring, both ends of the spring are provided with connecting heads 520, the connecting heads 520 are provided with helical grooves 522, and the connecting heads 520 are fixed with the spring when the coils of the spring are screwed into the helical grooves 522. In this way, the easy operation and stability of the connection between the spring and the connecting head 520 are ensured.

[0131] Optionally, the connecting head 520 is connected with a stop edge 523, the end of the spring can abut against the stop edge 523, and the stop edge 523 is used for preventing the spring from being axially displaced. In this way, the spring stress concentration problem can be improved, and the spring can well adapt to various complex and harsh working conditions such as vibration, high-frequency stretching and impact, and the service life and reliability of the spring are improved.

[0132] Of course, in other embodiments, the elastic member 510 includes a spring, and the connecting head 520 connected to the end of the spring is a hook formed by winding the spring itself; or, in other embodiments, the connecting head 520 is a hook, and the end of the spring is wound to form a necked structure, so that the hook is embedded on the necked structure at the end of the spring. In this way, the spring stress concentration problem can be alleviated.

[0133] In other embodiments, the elastic member 510 can also include an elastic rubber strip, which is not limited here.

[0134] In the embodiment, referring to FIG. 5, the support member 400 is provided with a receiving groove 410, and the elastic member 510 is at least partially located in the receiving groove 410. The groove wall of the receiving groove 410 is the aforementioned mounting wall 411, and the connecting seat 420 is connected to the groove wall of the receiving groove 410. The provision of the receiving groove 410 provides a relatively small space for accommodating the elastic member 510, and allows the elastic member 510 to swing in the receiving groove 410. Assembling the elastic member 510 in a relatively small space is easier to seal and protect than assembling the elastic member 510 in a large space. For example, the size of the shielding cover 430 connected to the support member 400 for shielding the receiving groove 410 can be made smaller.

[0135] Optionally, the connecting seat 420 is directly and integrally formed on the groove wall of the receiving groove 410. Of course, in other embodiments, the connecting seat 420 and the groove wall of the receiving groove 410 can also be connected in a manner of adhesion, fastening with bolts or other fasteners, which is not limited here.

[0136] Optionally, both of the elastic members 510 are embedded in the receiving groove 410, i.e., the first elastic member 511 and the second elastic member 512 are both embedded in the receiving groove 410.

[0137] Optionally, referring to FIGS. 5 and 13, the spreading device 020 further includes a shielding cover 430, the shielding cover 430 is connected with the support member 400, and the shielding cover 430 is used for shielding the slot of the receiving groove 410. The elastic member 510 and the flail plate 300 are located on the opposite sides of the shielding cover 430, respectively. In this way, the elastic member 510 can be shielded by the shielding cover 430 to reduce the interference of the material on the elastic member 510, so as to ensure that the elastic member 510 can reliably release the elastic potential energy to drive the flail plate 300 to swing in the reverse direction.

[0138] The connection between the shielding cover 430 and the support 400 can include, but is not limited to, clamping, and connecting through fasteners such as bolts.

[0139] Optionally, in the embodiment, the first elastic member 511 and the second elastic member 512 are both in a stretched state when the flywheel 300 is static, and are also in a stretched state when the flywheel 300 swings; that is, the first elastic member 511 and the second elastic member 512 are both in a stretched state whether in a static state or a swinging state, which is conducive to improving the state stability of the first elastic member 511 and the second elastic member 512, and is conducive to ensuring the consistency of the elastic force provided by the first elastic member 511 and the second elastic member 512.

[0140] Of course, in other embodiments, the first elastic member 511 and the second elastic member 512 are both in a stretched state when the flywheel 300 swings, and are in a natural state (i.e., neither stretched nor compressed) when the flywheel 300 is static; in this way, the service life of the first elastic member 511 and the second elastic member 512 can be prolonged.

[0141] Alternatively, in other embodiments, the first elastic member 511 and the second elastic member 512 are both in a compressed state when the flywheel 300 is static, and are in a stretched state when the flywheel 300 swings.

[0142] It should be understood that, with reference to FIG. 14, in other embodiments, the second end of the elastic member 510 can also be connected to a position of the flywheel 300 away from the swing center thereof, and the elastic direction provided by the elastic member 510 is not perpendicular to the axial direction of the output shaft of the motor 200; for example, the second end of the first elastic member 511 and the second end of the second elastic member 512 are both connected to a position of the flywheel 300 away from the swing center thereof, and the first elastic member 511 and the second elastic member 512 are respectively located on two sides of the set axis a; when the flywheel 300 swings, one of the first elastic member 511 and the second elastic member 512 is elongated, and the other is shortened; in this way, the first elastic member 511 and the second elastic member 512 can also be used to cooperatively drive the flywheel 300 to swing in the opposite direction.

[0143] It should be noted that the stretching and shortening of each elastic member 510 in the embodiment refers to the change in length, and does not represent the change in elasticity, that is, the stretching and compression do not represent that the elastic member 510 is in a state of providing a pulling force or a pushing force.

[0144] The present disclosure provides a novel swing type spreading device of a spinning disc, the output shaft of the motor directly drives the spinning disc, and the reciprocating swing of the spinning disc can be realized by controlling the forward and reverse rotation of the output shaft of the motor. However, the reciprocating swing of the spinning disc driven by the forward and reverse rotation of the output shaft of the motor requires the motor to stop and reverse frequently, which leads to high power consumption and serious heating of the motor, not only affecting the endurance of the battery providing power to the motor, but also easily burning the motor. Therefore, a resilient member is also configured to drive the spinning disc to swing in the opposite direction by using the elastic potential energy released by the resilient member. However, the resilient members are in a state of mutual opposition, which further reduces the conversion rate of the elastic potential energy of the resilient members into the power of the spinning disc.

[0145] In an embodiment, the spreading device comprises a motor 200, a spinning disc 300, a first resilient member 511 and a second resilient member 512; the spinning disc 300 is connected with the output shaft of the motor 200, and when the spreading device is working, the output shaft of the motor 200 drives the spinning disc 300 to swing reciprocally through forward and reverse rotation; the first end of the first resilient member 511 and the first end of the second resilient member 512 are respectively connected to a fixed position and are rotatably connected with the entity at the fixed position, the second end of the first resilient member 511 and the second end of the second resilient member 512 are rotatably connected with the spinning disc 300 or a swing member that swings synchronously with the spinning disc 300, and the second end of the first resilient member 511 and the second end of the second resilient member 512 can swing with the spinning disc 300; when the spinning disc 300 is at the middle position, the length extension directions of the first resilient member 511 and the second resilient member 512 are both directed to the swing center of the spinning disc 300; when the spinning disc 300 swings, the swing of the spinning disc 300 is converted into the axial deformation of the first resilient member 511 and the second resilient member 512, and the first resilient member 511 and the second resilient member 512 can cooperatively drive the spinning disc 300 to swing in the opposite direction when releasing the elastic potential energy.

[0146] In this way, the first resilient member and the second resilient member are not in a state of mutual opposition when releasing the elastic potential energy, but are mutually cooperative, which improves the problem of energy conversion rate reduction, i.e. the problem that the elastic potential energy released by one of the first resilient member and the second resilient member is simultaneously converted into the kinetic energy of the spinning disc and the elastic potential energy of the other of the first resilient member and the second resilient member, and further improves the problem of reduction of the conversion of the elastic potential energy of the resilient member into the kinetic energy of the spinning disc, ensuring that the motor can reliably reduce power consumption, i.e. through the centripetal installation of the resilient member, the first resilient member and the second resilient member are simultaneously elongated regardless of the direction in which the spinning disc swings, and the elastic potential energy released by the first resilient member and the second resilient member can both provide the torque for restoring the spinning disc to the middle position in the opposite direction, thereby ensuring that the first resilient member and the second resilient member can mutually cooperate rather than oppose each other.

[0147] In the related art, as shown in FIG. 7, the spreading device 020 only includes one elastic member 510, and in order to provide sufficient torque for the flinger 300, the elastic member 510 needs to be higher in strength and larger in size, which has higher requirements on the process and cost. Therefore, in the embodiment, the torque is provided by the resultant force of multiple elastic members 510 (i.e., greater than or equal to two elastic members 510).

[0148] Taking two elastic members 510 as an example, the following several embodiments are described.

[0149] Embodiment one, as shown in FIG. 15, when the flinger 300 is at the middle position, the two elastic members 510 are at the natural length (i.e., not stretched or compressed), that is, when the flinger 300 is static, the two elastic members 510 are in a state of not being stretched or compressed, and when the flinger 300 swings, one of the elastic members 510 is stretched, and the other elastic member 510 is compressed.

[0150] Embodiment two, as shown in FIG. 16, when the flinger 300 is static or swings, the two elastic members 510 are in a stretched state, but the degree of stretching is different, when the flinger 300 is at the middle position, the two elastic members 510 are in a state of force balance, and when the flinger swings, the tension of one of the elastic members 510 becomes larger, and the tension of the other elastic member 510 becomes smaller.

[0151] Embodiment three, as shown in FIG. 17, when the flinger 300 is static or swings, the two elastic members 510 are in a compressed state, but the degree of compression is different, when the flinger 300 is at the middle position, the two elastic members 510 are in a state of force balance, and when the flinger swings, the thrust of one of the elastic members 510 becomes larger, and the thrust of the other elastic member 510 becomes smaller.

[0152] However, since the swinging movement of the flinger 300 is an arc movement, the elastic members 510 in the embodiments one and three will be subjected to forces different from the axial direction of the spring when compressed, and such forces can cause the spring to bend (as shown in FIG. 18). In order to solve the above problem, a cylindrical retainer can be arranged outside the elastic member 510 to limit the elastic member 510 in the cylindrical retainer to avoid the elastic member 510 being bent, but even so, the elastic member 510 will still be subjected to non-axial forces, and the elastic member 510 will still rub against the cylinder wall of the retainer, which has a great impact on the service life of the elastic member 510. The embodiment two does not need to set a retainer to limit the shape of the elastic member 510, and has the advantages of simple and reliable structure.

[0153] However, in the scheme of the second embodiment, the two elastic members 510 are always in opposition to each other, and the force between the elastic members 510 is in opposition to each other when the flywheel 300 swings, i.e., the elastic members 510 cannot cooperate with each other, which leads to a decrease in energy conversion rate, because the elastic potential energy of the elastic members 510 is simultaneously converted into kinetic energy of the flywheel 300 and elastic potential energy of the other elastic member 510, which leads to a decrease in kinetic energy that can be provided to the flywheel 300, and the power consumption reduction effect of the motor 200 is compromised.

[0154] To improve the above problems, please refer to FIG. 4, the spreading device 020 of the present embodiment includes two elastic members 510, which are respectively a first elastic member 511 and a second elastic member 512. Optionally, along the length extension direction of the swing axis (i.e., the dashed line in FIG. 5) of the flywheel 300, the swing arm member 610 is located between the support member 400 and the flywheel 300, the middle part of the swing arm member 610 is connected with the output shaft of the motor 200, and the middle part of the swing arm member 610 is in transmission connection with the disc body 310 of the flywheel 300, so that the output shaft of the motor 200 is in transmission connection with the disc body 310 of the flywheel 300 through the swing arm member 610. The two ends of the length extension direction of the swing arm member 610 are respectively connected with the second end of the first elastic member 511 and the second end of the second elastic member 512. When the flywheel 300 is at the middle position, the length extension direction of the elastic member 510 points to the swing center of the flywheel 300; specifically, when the flywheel 300 is at the middle position, the length extension direction of both the first elastic member 511 and the second elastic member 512 points to the swing center of the flywheel 300, and the length extension direction of the first elastic member 511 coincides with the length extension direction of the second elastic member 512 and is perpendicular to the set axis a, the first elastic member 511 and the second elastic member 512 are symmetrically distributed along the horizontal direction and are located on the two sides of the set axis a, the first elastic member 511 and the second elastic member 512 are in a stretched state when the flywheel 300 is static, and are also in a stretched state when swinging; when the flywheel 300 swings, the swing of the flywheel 300 is converted into the axial deformation of the first elastic member 511 and the second elastic member 512, and the first elastic member 511 and the second elastic member 512 can cooperatively drive the flywheel 300 to swing reversely when releasing the elastic potential energy.

[0155] In this way, the first elastic member 511 and the second elastic member 512 are not in a state of mutual confrontation when releasing the elastic potential energy, but are in a state of mutual cooperation, that is, the problem of the energy conversion rate being reduced can be improved, that is, the elastic potential energy released by one of the first elastic member 511 and the second elastic member 512 is simultaneously converted into kinetic energy of the flapper 300 and the elastic potential energy of the other, thereby improving the energy conversion efficiency and ensuring that the motor 200 can reliably reduce power consumption. That is, through the centripetal installation of the first elastic member 511 and the second elastic member 512, the flapper 300 swings in any direction, which causes the first elastic member 511 and the second elastic member 512 to simultaneously elongate, and the elastic potential energy released by the first elastic member 511 and the second elastic member 512 can provide torque for reversely restoring the flapper 300 to the center position, thereby ensuring that the first elastic member 511 and the second elastic member 512 can cooperate with each other rather than confront each other.

[0156] Further, referring to FIG. 5, the elastic member 510 is located between the support member 400 and the flapper 300 in the length extension direction of the swing axis of the flapper 300, that is, the elastic member 510 is arranged on a plane parallel to the swing plane of the flapper 300. Optionally, the elastic member 510 is located on the side of the disc body 310 of the flapper 300 away from the paddle 320, and the elastic force provided by the elastic member 510 is perpendicular to the output shaft of the motor 200. In this way, the arrangement of the elastic member 510 can avoid interfering with the flapper 300 in spreading the material, and can ensure that the elastic potential energy of the elastic member 510 is converted into the power for reversely swinging the flapper 300 as much as possible, thereby improving the efficiency.

[0157] Of course, in other embodiments, the elastic member 510 can also be arranged on a plane that is not parallel to the swing plane of the flapper 300.

[0158] Alternatively, in other embodiments, the first end of the elastic member 510 can also be rotationally connected to the load support 100, and the like, which is not specifically limited here.

[0159] In this embodiment, referring to FIGS. 5 and 6, the swing member includes a swing arm member 610 arranged on the output shaft of the motor 200, the flapper 300 is connected to the output shaft of the motor 200 through the swing arm member 610, and the second end of the elastic member 510 is rotationally connected to the end of the swing arm member 610. In this way, the elastic member 510 can reliably drive the flapper 300 to reversely swing.

[0160] In an embodiment, when the flapper 300 is in the center position, the length extension directions of the first elastic member 511 and the second elastic member 512 both point to the swing center of the flapper 300, and the first elastic member 511 and the second elastic member 512 are asymmetrically distributed on both sides of the set axis a, or the first elastic member 511 and the second elastic member 512 are distributed on the same side of the set axis a, which is not specifically limited here.

[0161] It should be understood that in other embodiments, the number of elastic members 510 can also be increased or decreased as needed, for example, four elastic members 510, etc., which is not specifically limited here.

[0162] It should be noted that in the embodiment in which the number of elastic members 510 is greater than two, as long as two centripetally arranged elastic members 510 are included, the problem of non-synchronization between the elastic members 510 can be helped, for example, in the embodiment in which the number of elastic members 510 is four, two of the elastic members 510 are respectively a first elastic member 511 and a second elastic member 512, the length extension directions of which point to the center of oscillation of the flywheel 300 when the flywheel 300 is in the middle position, and the length extension directions of the other two elastic members 510 do not point to the center of the flywheel 300. Of course, the length extension directions of all the elastic members 510 point to the center of oscillation of the flywheel 300 when the flywheel 300 is in the middle position, and all the elastic members 510 can synchronously drive the flywheel 300 to oscillate in the opposite direction.

[0163] The connection mode of the output shaft of the motor 200 to the swing arm member 610 and the connection mode of the swing arm member 610 to the flywheel 300 include but are not limited to insertion, clamping, welding, which is not specifically limited here.

[0164] It should be understood that in other embodiments, the swing arm member 610 is connected to the output shaft of the motor 200, but is not connected to the flywheel 300, that is, the flywheel 300 is not in driving connection with the output shaft of the motor 200 through the swing arm member 610.

[0165] In the present embodiment, please refer to FIG. 6, the first elastic member 511 and the second elastic member 512 are centrally symmetrically distributed with respect to the center of oscillation of the flywheel 300. When the flywheel 300 oscillates, the radial forces exerted by the first elastic member 511 and the second elastic member 512 on the output shaft of the motor 200 can cancel each other out, and the first elastic member 511 and the second elastic member 512 synchronously elongate or shorten. In this way, the problem of shaft breakage can be improved, that is, the radial component force of the first elastic member 511 acting on the output shaft of the motor 200 and the radial component force of the second elastic member 512 acting on the output shaft of the motor 200 cancel each other out, improving the risk of shaft breakage of the output shaft of the motor 200 due to the pulling of the radial component force.

[0166] Of course, in the embodiment in which the number of elastic members 510 is two or more, the plurality of elastic members 510 need not necessarily be distributed in a central symmetric manner about the center of oscillation of the swing disc 300, i.e., in other embodiments, the plurality of elastic members 510 need not necessarily be distributed in a central symmetric manner about the center of oscillation of the swing disc 300. For example, in other embodiments, the first elastic member 511 and the second elastic member 512 can be distributed on the same side of the set axis a (as shown in FIG. 19); or, in other embodiments, the plurality of elastic members 510 can be distributed asymmetrically on both sides of the set axis a; or, the plurality of elastic members 510 can be distributed symmetrically but not centrally symmetrically on both sides of the set axis a (as shown in FIG. 8), and the like, without being specifically limited herein.

[0167] Of course, in other embodiments, the elastic member 510 includes a spring, and the connecting head 520 connected to the end of the spring is a hook formed by winding the spring itself; or, in other embodiments, the connecting head 520 is a hook, and the end of the spring is wound to form a re-entrant structure, so as to embed the hook in the re-entrant structure at the end of the spring, so as to reduce the stress concentration problem of the spring. Or, in other embodiments, the structures of the two elastic members 510 can be different, and the connection modes of the first ends and the second ends of the two elastic members 510 to the connecting seat 420 and the swing arm member 610 can also be different, for example: the first end of the first elastic member 511 is rotatably connected to the connecting seat 420 through the second rotating shaft 423, so as to be connected to the swing disc 300 through the connecting seat 420, and the first end of the second elastic member 512 is rotatably connected to the swing disc 300 through the second rotating shaft 423 directly, without passing through the connecting seat 420.

[0168] The present disclosure provides a novel swing-type spreader, in which the output shaft of the motor directly drives the swing disc, and the reciprocating swing of the swing disc can be realized by controlling the forward and reverse rotation of the output shaft of the motor. However, the inventors have found that the reciprocating swing of the swing disc driven by the forward and reverse rotation of the output shaft of the motor requires the motor to be constantly stopped and accelerated in the opposite direction, which results in a large power consumption of the motor and a serious heating problem, which not only affects the endurance of the battery providing power to the motor, but also easily burns the motor. Therefore, an elastic member is further configured to drive the swing disc to swing in the opposite direction by using the elastic potential energy released by the elastic member. However, the inventors have found that the elastic member provides a radial force to the output shaft of the motor driving the swing disc, which causes the output shaft of the motor to be pulled and even risks breaking the shaft.

[0169] In an embodiment, the spreading device comprises a motor 200, a whirling disc 300 connected with an output shaft of the motor 200, and two elastic mechanisms 500. When the spreading device is working, the motor 200 drives the whirling disc 300 to swing back and forth by positive and reverse rotation. When the whirling disc 300 swings, the swinging motion of the whirling disc 300 is converted into the axial deformation of each of the two elastic mechanisms 500. The two elastic mechanisms 500 can drive the whirling disc 300 to swing reversely when releasing the elastic potential energy. The radial forces applied by the two elastic mechanisms 500 to the output shaft of the motor 200 can be offset.

[0170] The spreading device provided by the embodiments of the present disclosure comprises a motor, a whirling disc, and two elastic mechanisms. The whirling disc is connected with an output shaft of the motor. When the spreading device is working, the motor drives the whirling disc to swing back and forth by positive and reverse rotation. When the whirling disc swings, the swinging motion of the whirling disc is converted into the axial deformation of each of the two elastic mechanisms. The two elastic mechanisms can drive the whirling disc to swing reversely when releasing the elastic potential energy. The radial forces applied by the two elastic mechanisms to the output shaft of the motor can be offset. Since the radial forces applied by the two elastic mechanisms to the output shaft of the motor can be offset, the output shaft of the motor is prevented from being pulled in the radial direction, and the problem of broken shaft of the output shaft of the motor is effectively improved.

[0171] In the related art, the output shaft of the motor 200 is used to drive the whirling disc 300 to swing back and forth by positive and reverse rotation. The motor 200 needs to be constantly stopped and accelerated reversely, which leads to great power consumption of the motor 200 and serious heating. The problem not only affects the endurance of the battery providing power for the motor 200, but also easily burns the motor 200.

[0172] To improve the above problems, the spreading device 020 provided by the present disclosure further comprises an elastic mechanism 500. The elastic mechanism 500 is used to absorb the kinetic energy of the whirling disc 300 and deform elastically when the whirling disc 300 swings, and drive the whirling disc 300 to swing reversely when releasing the elastic potential energy. In this way, the elastic deformation of the elastic mechanism 500 is used to absorb and store energy, so that the swinging frequency of the elastic mechanism 500 and the whirling disc 300 is adapted, and the whirling disc 300 is assisted to decelerate and accelerate reversely, so as to reduce the energy consumption of the motor 200 when being stopped and accelerated reversely, improve the problem of serious heating of the motor 200, and further help to prolong the endurance of the battery providing power for the motor 200, and effectively improve the problem of burning of the motor 200.

[0173] The elastic mechanism 500 has various embodiments, which will be described exemplarily below.

[0174] Please refer to FIG. 4 and FIG. 20-26, the elastic mechanism 500 includes a straight elastic member (hereinafter referred to as elastic member 510), when the swing plate 300 swings, the swing movement of the swing plate 300 can be converted into the axial deformation of the elastic member 510. In this way, the kinetic energy of the swing plate 300 can be more absorbed by the elastic member 510, and the elastic potential energy released by the elastic member 510 can also be more converted into the driving force for driving the swing plate 300 to reverse rotation, reducing energy loss, and improving the connection stability between the elastic member 510 and the swing plate 300, reducing wear, and thus improving the reliability of the swing plate 300 assisted by the elastic member 510 to reverse swing.

[0175] It should be noted that the straight elastic member refers to an elastic member designed to deform axially when subjected to external force, such as a spring or rubber that can stretch or compress in the length direction.

[0176] In this disclosure, some embodiments utilize the linear motion assembly 700 of the elastic mechanism 500 to convert the circular arc motion of the swing plate 300 into linear motion, so that the elastic member 510 is stretched or compressed linearly, that is, the swing plate 300 and the linear motion assembly 700 are drivingly connected, the linear motion assembly 700 is used to convert the swing of the swing plate 300 into linear motion, and the elastic member 510 is axially deformed; while in some other embodiments, the linear motion assembly 700 is not needed; the following will be described exemplarily for multiple embodiments. Embodiment 1

[0177] Please refer to FIG. 20 and 21, the spreading device 020 further includes a second swing arm 602 that swings synchronously with the swing plate 300, specifically, one end of the second swing arm 602 is coaxially connected with the disc body 310 of the swing plate 300, the linear motion assembly 700 includes a first slide rail 711 and a second slide rail 712, the other end of the second swing arm 602 is slidingly connected with the first slide rail 711; the first slide rail 711 and the second slide rail 712 are slidingly connected, the extension directions of the first slide rail 711 and the second slide rail 712 are perpendicular; the elastic member 510 is arranged in the first slide rail 711; when the swing plate 300 swings, the end of the second swing arm 602 slides in the first slide rail 711, and drives the first slide rail 711 to slide along the second slide rail 712, so that the elastic member 510 is axially deformed. By configuring the two-dimensional slide rail assembly, the swing of the swing plate 300 is converted into linear motion in the first slide rail 711, and the elastic member 510 is stretched and contracted by the second swing arm 602, that is, when the elastic member 510 recovers, the elastic potential energy released by the elastic member 510 can reliably drive the second swing arm 602 and the swing plate 300 to swing reversely synchronously, ensuring the reliability of the swing plate 300 to swing reciprocatingly assisted by the elastic member 510, reducing the loss of elastic potential energy, and improving the reliability.

[0178] Optionally, the second slide rail 712 is connected to the first side of the support 400, and the length extension direction of the second slide rail 712 is parallel to the setting axis a; the second swing arm 602 is located on the side of the disc body 310 facing the support 400, the elastic mechanism 500 includes two elastic members 510, the first slide rail 711 has a linear slide groove, the first slide rail 711 extends in the horizontal direction, the two elastic members 510 are arranged in the slide groove of the first slide rail 711, the first ends of the two elastic members 510 are respectively connected to the two ends of the first slide rail 711 in the length direction, the second ends of the two elastic members 510 are respectively connected to the ends of the slide groove of the first slide rail 711, and the length extension direction of the two elastic members 510 extends in the horizontal direction. When the disc 300 swings, the second swing arm 602 swings synchronously, the second swing arm 602 compresses one of the two elastic members 510 and stretches the other elastic member 510, so that the two elastic members 510 are used to drive the second swing arm 602 and the disc 300 to swing in the opposite direction.

[0179] It should be understood that in other embodiments, the second swing arm 602 can also be a sliding block slidably arranged in the slide groove of the first slide rail 711 and connected with the disc 300, the two elastic members 510 of the elastic mechanism 500 are respectively located on the two sides of the sliding block, and one end of the two elastic members 510 is connected with the sliding block. Alternatively, in other embodiments, the end of the second swing arm 602 is rotatably connected with a sliding block, the sliding block is slidably arranged in the first slide rail 711, and the two elastic members 510 of the elastic mechanism 500 are respectively connected to the two sides of the sliding block; when the disc 300 swings, the second swing arm 602 drives the sliding block to slide in the first slide rail 711, so that the elastic member 510 is stretched and contracted by the sliding block.

[0180] The inventor found that in the embodiment of the single elastic mechanism 500 as shown in FIG. 21, the direction of the force F1 acting on the disc 300 by the elastic member 510 through the second swing arm 602 and the direction from the swing center of the disc 300 to the force acting point are not perpendicular, which causes the output shaft of the motor 200 driving the disc 300 to swing to bear a radial force F2, and the radial force changes with the change of the force provided by the elastic member 510 during the swinging of the disc 300, so that the output shaft of the motor 200 is pulled and stretched, and the shaft is easily broken.

[0181] In order to improve the above problems, please refer to FIG. 20, in the embodiment, the spreading device 020 comprises two elastic mechanisms 500 and two second swing arms 602, the two elastic mechanisms 500 are centrally symmetrically distributed relative to the swing center of the flail plate 300, that is, the linear motion assemblies 700 of the two elastic mechanisms 500 are centrally symmetrically distributed relative to the swing center of the flail plate 300, and the elastic members 510 of the two elastic mechanisms 500 are also centrally symmetrically distributed relative to the swing center of the flail plate 300; the two second swing arms 602 are slidably matched with the first sliding rails 711 of the two linear motion assemblies 700. For example, along the length extension direction of the set axis a, the two elastic mechanisms 500 are respectively located at the upper and lower ends of the swing center of the flail plate 300. In this way, the radial forces exerted by the two elastic mechanisms 500 on the output shaft of the motor 200 can be offset, so that the output shaft of the motor 200 is not subjected to radial pulling, effectively improving the problem of shaft breakage of the output shaft of the motor 200. Embodiment 2

[0182] Please refer to FIGS. 22 and 23, the spreading device 020 further comprises a second swing arm 602 which swings synchronously with the flail plate 300, specifically, one end of the second swing arm 602 is coaxially connected with the disc body 310 of the flail plate 300, the linear motion assembly 700 comprises a first sliding rail 711 and a second sliding rail 712, the second sliding rail 712 is connected with the support 400, and the end of the second swing arm 602 is slidably matched with the first sliding rail 711; the first sliding rail 711 is slidably matched with the second sliding rail 712, and the extension directions of the first sliding rail 711 and the second sliding rail 712 are perpendicular; the elastic member 510 is arranged on the second sliding rail 712; when the flail plate 300 swings, the end of the second swing arm 602 slides in the first sliding rail 711, and drives the first sliding rail 711 to slide along the second sliding rail 712, so that the elastic member 510 is axially deformed. Through the configuration of the two-dimensional sliding rail assembly, the swing of the flail plate 300 is converted into the linear motion of the first sliding rail 711, and the first sliding rail 711 is used to make the elastic member 510 stretch and contract, that is, when the elastic member 510 recovers, the elastic potential energy released by the elastic member 510 can be used to reliably drive the second swing arm 602 and the flail plate 300 to synchronously and reversely swing, ensuring the reliability of the flail plate 300 in reciprocating swing by the elastic action of the elastic member 510, reducing the loss of elastic potential energy, and improving the reliability.

[0183] Optionally, the first slide rail 711 is connected with the sliding block 713, the sliding block 713 is slidably connected with the second slide rail 712, that is, the first slide rail 711 is slidably connected with the second slide rail 712 through the sliding block 713; the elastic member 510 is arranged in the second slide rail 712, and two ends of the elastic member 510 are connected with the second slide rail 712 and the sliding block 713 respectively. When the disc 300 swings, the second swing arm 602 swings away from the disc 300, and the end of the second swing arm 602 away from the disc 300 slides along the first slide rail 711, and drives the first slide rail 711 to slide the sliding block 713 in the second slide rail 712, so as to make the sliding block 713 stretch and retract the elastic member 510, and when the elastic member 510 restores, the elastic member 510 drives the sliding block 713 to slide reversely, and drives the second swing arm 602 and the disc 300 to swing reversely through the first slide rail 711.

[0184] Optionally, the length extension direction of the first slide rail 711 is parallel to the length extension direction of the setting axis a. In this way, when the disc 300 drives the second swing arm 602 to swing synchronously, it can be ensured that the second swing arm 602 sliding in the first slide rail 711 can reliably drive the first slide rail 711 to slide the sliding block 713 in the second slide rail 712.

[0185] Optionally, the first slide rail 711 and the sliding block 713 are connected at an angle, and the two form a “T” shape. The end of the sliding block 713 away from the first slide rail 711 is slidably connected with the second slide rail 712.

[0186] The angle between the first slide rail 711 and the sliding block 713 is not limited, including but not limited to 90°, 85°, 80°.

[0187] Of course, in other embodiments, the first slide rail 711 and the sliding block 713 are connected at an angle, and the two form an “L” shape.

[0188] The inventor found that in the embodiment of the single elastic mechanism 500 as shown in FIG. 23, the direction of the force F1 of the elastic member 510 acting on the disc 300 through the second swing arm 602 is not perpendicular to the direction from the swing center of the disc 300 to the force acting point, which causes the output shaft of the motor 200 driving the disc 300 to swing to bear a radial force F2, and the radial force changes with the change of the force provided by the elastic member 510 during the swinging of the disc 300, so that the output shaft of the motor 200 is pulled and stretched, and the shaft is easily broken.

[0189] In order to improve the above problems, please refer to Figure 22, in the embodiment, the spreading device 020 includes two elastic mechanisms 500, which can be understood as the spreading device 020 including two elastic members 510 and two linear motion assemblies 700, the two elastic members 510 and the two linear motion assemblies 700 are matched one by one, that is, when the flywheel 300 swings, the flywheel 300 is reversely swung by using the two sets of elastic members 510 and the linear motion assemblies 700, and the reliability of reversely swinging the flywheel 300 by using the elastic members 510 is ensured. Among them, the two elastic mechanisms 500 are centrally symmetrically distributed with the swing center of the flywheel 300 as the center, and the output shaft of the motor 200 is drivingly connected with the flywheel 300 through the second swing arm 602; when the flywheel 300 swings, the radial forces applied by the elastic members 510 of the two elastic mechanisms 500 to the output shaft of the motor 200 can be mutually offset, and the elastic members 510 of the two elastic mechanisms 500 are synchronously elongated or shortened. In this way, the radial forces of the two elastic mechanisms 500 acting on the output shaft of the motor 200 can be mutually offset, the problem that the output shaft of the motor 200 is easily pulled is improved, and the problem that the output shaft of the motor 200 is prone to shaft breakage is improved.

[0190] Of course, in other embodiments, the number of elastic mechanisms 500 can be increased or decreased as needed, which is not specifically limited here.

[0191] Further, the middle part of the second swing arm 602 is coaxially connected with the flywheel 300, and the two ends of the length extension direction of the second swing arm 602 are respectively slidingly matched with the first slide rails 711 of the two linear motion assemblies 700; in this way, the same second swing arm 602 can be used to simultaneously cause the elastic deformation of the two elastic members 510.

[0192] The connection mode of the output shaft of the motor 200 and the second swing arm 602 includes but is not limited to plug-in connection and welding.

[0193] Optionally, the elastic members 510 of the two elastic mechanisms 500 are symmetrically distributed on both sides of the set axis a, that is, the two elastic members 510 are symmetrically distributed in the horizontal direction on both sides of the set axis a.

[0194] Optionally, when the flywheel 300 is at the middle position, the length extension directions of the two elastic members 510 are both directed to the swing center of the flywheel 300. The above-mentioned flywheel 300 at the middle position can mean that the flywheel 300 is not under the action of the motor 200 and the elastic member 510 and is in a position state at rest. Embodiment 3

[0195] Please refer to FIG. 24 and FIG. 25, the straight line motion assembly 700 includes a sliding piece 731, a third slide rail 732 and a swing lever 733, the sliding piece 731 is in sliding fit with the third slide rail 732, two ends of the swing lever 733 are respectively pivoted with the sliding piece 731 and the flywheel 300, when the flywheel 300 swings and drives the swing lever 733 to swing, the swing lever 733 drives the sliding piece 731 to slide relative to the third slide rail 732, and the sliding piece 731 can make the elastic piece 510 axially deform. When the elastic piece 510 restores and releases the elastic potential energy, the elastic piece 510 drives the sliding piece 731 to reversely slide relative to the third slide rail 732, and drives the flywheel 300 to reversely swing through the swing lever 733.

[0196] The inventor finds that, in the embodiment of the single elastic mechanism 500 as shown in FIG. 25, the direction of the force F1 that the elastic piece 510 acts on the flywheel 300 through the second swing arm 602 and the direction from the swing center of the flywheel 300 to the force acting point are not perpendicular, which causes the output shaft of the motor 200 that drives the flywheel 300 to swing to be subjected to a radial force F2, the radial force changes with the change of the force provided by the elastic piece 510 in the process of the flywheel 300 swinging, thus causing the output shaft of the motor 200 to be pulled and easily leading to the problem of shaft breakage. Moreover, in the embodiment of the two elastic mechanisms 500 as shown in FIG. 26, the elastic pieces 510 of the two elastic mechanisms 500 all cause the output shaft of the motor 200 that drives the flywheel 300 to swing to be subjected to a radial force F2, and the radial forces F2 provided by the elastic pieces 510 of the two elastic mechanisms 500 cannot be cancelled out, and change with the change of the force provided by the elastic piece 510 in the process of the flywheel 300 swinging, thus, the output shaft of the motor 200 is still pulled and easily leads to the problem of shaft breakage.

[0197] In order to improve the above problems, please refer to Figure 24, the spreading device 020 of the embodiment includes two elastic mechanisms 500, which can be understood as including two elastic members 510 and two linear motion assemblies 700, the two elastic members 510 are arranged in one-to-one correspondence with the third sliding rails 732 of the two linear motion assemblies 700, and the third sliding rails 732 are connected to the first side of the support 400, and the elastic member 510 is arranged in the corresponding third sliding rail 732; the spreading device 020 further includes a second swing arm 602 coaxially connected with the disc body 310 of the flinger 300, and the two ends of the second swing arm 602 in the length extension direction are respectively pivoted with one end of the swing rod 733 of the two linear motion assemblies 700, that is, the swing rod 733 is pivoted with the flinger 300 through the second swing arm 602, and the other end of the swing rod 733 of the two linear motion assemblies 700 is slid with the corresponding sliding member 731, and the sliding member 731 of the two linear motion assemblies 700 is slid with the corresponding third sliding rail 732 in a matched mode, and the two ends of the elastic member 510 are respectively connected with the corresponding third sliding rail 732 and sliding member 731. When the flinger 300 swings, the second swing arm 602 swings synchronously to drive the two swing rods 733 to swing, and the swing rod 733 drives the corresponding sliding member 731 to slide in the third sliding rail 732, so as to make the two sliding members 731 drive the two elastic members 510 to synchronously elongate or shorten; when the two elastic members 510 restore and release the elastic potential energy, the corresponding sliding member 731 is reversely slid to drive the swing rod 733 to reversely swing through the sliding member 731, and the flinger 300 is reversely swung through the swing rod 733.

[0198] Among them, the two elastic mechanisms 500 are centrally symmetrically distributed with the swing center of the flinger 300 as the center, and the output shaft of the motor 200 is drivingly connected with the flinger 300 through the second swing arm 602; when the flinger 300 swings, the radial forces exerted by the elastic members 510 of the two elastic mechanisms 500 on the output shaft of the motor 200 can be mutually offset, and the elastic members 510 of the two elastic mechanisms 500 synchronously elongate or shorten. In this way, the radial forces exerted by the two elastic mechanisms 500 on the output shaft of the motor 200 can be mutually offset, so as to improve the problem that the output shaft of the motor 200 is easily pulled, and improve the problem that the output shaft of the motor 200 is prone to breakage.

[0199] Of course, in other embodiments, the number of elastic mechanisms 500 can be increased or decreased as needed, which is not specifically limited here.

[0200] The connection mode of the output shaft of the motor 200 and the second swing arm 602 includes but is not limited to insertion and welding.

[0201] Optionally, the two elastic mechanisms 500 are symmetrically distributed on the two sides of the set axis a, and the two elastic members 510 are symmetrically distributed on the two sides of the set axis a in the horizontal direction.

[0202] Optionally, when the disc 300 is in the middle position, the length extension directions of the two elastic members 510 are both directed to the swing center of the disc 300. The disc 300 in the middle position can mean the position of the disc 300 when it is not affected by the force of the motor 200 and the elastic member 510 and is at rest.

[0203] In the above embodiments 1-3, when the disc 300 is swung reversely by the elastic potential energy released by the elastic member 510, the first slide rail 711 of the embodiment 1 is subjected to the force in the length extension direction of the non-second slide rail 712, so that the friction exists between the first slide rail 711 and the second slide rail 712, the second swing arm 602 of the embodiment 2 is subjected to the force in the length extension direction of the non-first slide rail 711, so that the friction exists between the second swing arm 602 and the first slide rail 711, and the slide member 731 of the embodiment 3 is subjected to the force in the length extension direction of the non-third slide rail 732, so that the friction exists between the slide member 731 and the third slide rail 732, which can result in the reduction of the conversion rate of the elastic potential energy. Moreover, the embodiments 1-3 convert the swing of the disc 300 into the linear motion through the linear motion assembly 700, and the linear motion assembly 700 itself has a complex structure, needs a large assembly space, and has low reliability. In order to improve the above problems, the embodiment 4 is provided. Embodiment 4

[0204] Please refer to FIG. 4, FIG. 5, FIG. 6, FIG. 27, and FIG. 28. The first end of the elastic member 510 is connected to a fixed position and is rotatably connected to the entity at the fixed position. Specifically, the first end of the elastic member 510 is rotatably connected to the support member 400, that is, the entity at the fixed position refers to the support member 400. The second end of the elastic member 510 is rotatably connected to the disc 300 or a swing member that swings synchronously with the disc 300. When the disc 300 swings, the second end of the elastic member 510 swings with the disc 300, and at the same time, the second end also rotates around the position to which it is connected. The first end of the elastic member 510 does not swing with the disc 300, but also rotates around the fixed position to which it is connected. Thus, the elastic member 510 can always maintain a straight shape during the swing of the second end, and the swing motion of the disc 300 can be converted into the axial deformation of the elastic member 510. When the elastic potential energy is released, the elastic member 510 can drive the disc 300 to swing reversely. In this way, the linear motion assembly 700 can be omitted, the circular arc motion is converted into the linear motion, the energy is directly absorbed and released in the circular arc motion by using the variable length of the elastic member 510, unnecessary energy loss is avoided, the energy conversion rate is improved, more energy can be converted into the elastic potential energy of the elastic member 510, and the energy consumption of the motor 200 driving the disc 300 to reciprocate can be reduced by using the elastic potential energy of the elastic member 510.

[0205] The inventor found that, as shown in FIG. 27, in the embodiment in which the two elastic mechanisms 500 are not distributed in a central symmetry with respect to the swing center of the swing plate 300, the direction of the force F1 exerted by the elastic member 510 of any one elastic mechanism 500 on the swing plate 300 is not perpendicular to the direction from the swing center of the swing plate 300 to the force application point, which causes the output shaft of the motor 200 driving the swing plate 300 to be subjected to a radial force F2. The radial forces F2 provided by the two non-central-symmetry elastic mechanisms 500 cannot be counteracted by each other, and change in the process of swinging along with the change of the force provided by the elastic member 510, thus causing the output shaft of the motor 200 to be pulled and easily leading to the problem of shaft breakage.

[0206] To improve the above problem, please refer to FIG. 6. The spreading device 020 includes two elastic mechanisms 500, and the elastic members 510 of the two elastic mechanisms 500 are respectively a first elastic member 511 and a second elastic member 512. In the length extension direction of the swing axis of the swing plate 300, the first swing arm 610 is located between the support member 400 and the swing plate 300, the middle part of the first swing arm 610 is connected with the output shaft of the motor 200, and the middle part of the first swing arm 610 is in driving connection with the swing plate 300, so that the output shaft of the motor 200 is in driving connection with the disc body 310 of the swing plate 300 through the first swing arm 610. The two ends of the first swing arm 610 in the length extension direction are respectively connected with the second end of the first elastic member 511 and the second end of the second elastic member 512. In this way, the two elastic members 510 can reliably drive the swing plate 300 to swing in the opposite direction.

[0207] Among them, the first elastic member 511 and the second elastic member 512 are distributed in a central symmetry with respect to the swing center of the swing plate 300. When the swing plate 300 swings, the radial forces exerted by the first elastic member 511 and the second elastic member 512 on the output shaft of the motor 200 can be counteracted by each other, and the first elastic member 511 and the second elastic member 512 are synchronously elongated or shortened. In this way, the problem of shaft breakage can be improved, that is, the radial component force of the first elastic member 511 acting on the output shaft of the motor 200 and the radial component force of the second elastic member 512 acting on the output shaft of the motor 200 are counteracted by each other, and the risk of the output shaft of the motor 200 being pulled by the radial component force and causing shaft breakage is improved.

[0208] Optionally, referring to Figure 5, along the length of the swing axis of the swivel disc 300, the elastic element 510 is located between the support member 400 and the swivel disc 300. Specifically, the elastic element 510 is positioned on a plane parallel to the swing plane of the swivel disc 300. Specifically, the elastic element 510 is located on the side of the disc body 310 of the swivel disc 300 away from the paddle 320, and the direction of the elastic force provided by the elastic element 510 is perpendicular to the output shaft axis of the motor 200. This arrangement avoids interference from the elastic element 510 in the material spreading process of the swivel disc 300 and ensures that the elastic potential energy of the elastic element 510 is converted as much as possible into the power for the reverse swing of the swivel disc 300, thus improving efficiency.

[0209] Of course, in other embodiments, the elastic element 510 may also be disposed on the plane in which the swivel disc 300 swings.

[0210] Alternatively, in other embodiments, the first end of the elastic member 510 may also be rotatably connected to the load support 100, etc., without being specifically limited here.

[0211] In this embodiment, please refer to Figures 5 and 6. The swinging member includes a first swing arm 610 disposed on the output shaft of the motor 200, and the second end of the elastic member 510 is rotatably connected to the end of the first swing arm 610. With this configuration, the elastic member 510 can reliably drive the swivel disc 300 to swing in the opposite direction.

[0212] It should be understood that in other embodiments, the number of elastic mechanisms 500 can be increased or decreased as needed, for example, 4 elastic mechanisms 500 (as shown in Figure 28), etc., which are not specifically limited here.

[0213] The connection method between the output shaft of the motor 200 and the first swing arm 610, and the connection method between the first swing arm 610 and the swing plate 300, include but are not limited to plug-in, snap-in, and welding, and are not specifically limited here.

[0214] It should be understood that in other embodiments, the first swing arm 610 is connected to the output shaft of the motor 200, but not to the swivel disc 300, that is, the swivel disc 300 is not connected to the output shaft of the motor 200 via the first swing arm 610.

[0215] Please refer to FIG. 6, when the flywheel 300 is located at the middle position, the length extension direction of the elastic member 510 points to the swing center of the flywheel 300; specifically, the length extension direction of both the first elastic member 511 and the second elastic member 512 points to the swing center of the flywheel 300, and the length extension direction of the first elastic member 511 coincides with the length extension direction of the second elastic member 512 and is perpendicular to the set axis a, and the first elastic member 511 and the second elastic member 512 are distributed on both sides of the set axis a in the horizontal direction. When the flywheel 300 swings, the swing of the flywheel 300 is converted into the axial deformation of the first elastic member 511 and the second elastic member 512, and the first elastic member 511 and the second elastic member 512 can cooperatively drive the flywheel 300 to swing in the opposite direction when releasing the elastic potential energy. In this way, the first elastic member 511 and the second elastic member 512 are not in a state of mutual resistance when releasing the elastic potential energy, but are mutually cooperative, which can improve the problem of energy conversion rate reduction, i.e., the problem that the elastic potential energy released by one of the first elastic member 511 and the second elastic member 512 is simultaneously converted into kinetic energy of the flywheel 300 and the elastic potential energy of the other, and further improve the problem that the elastic potential energy of any one of the first elastic member 511 and the second elastic member 512 is reduced when converted into kinetic energy of the flywheel 300, so as to ensure that the motor 200 can reliably reduce power consumption, i.e., by the centripetal installation of the first elastic member 511 and the second elastic member 512, the flywheel 300 swings in any direction, which will make the first elastic member 511 and the second elastic member 512 elongate at the same time, and the elastic potential energy released by the first elastic member 511 and the second elastic member 512 can provide torque for the flywheel 300 to restore to the middle position in the opposite direction, thereby ensuring that the first elastic member 511 and the second elastic member 512 can cooperate with each other rather than resist each other. Moreover, as shown in FIG. 29, the axes of the first elastic member 511 and the second elastic member 512 are always in a parallel state, and the forces provided by the two are always opposite, which can effectively offset the radial force acting on the output shaft of the motor 200, avoid pulling the output shaft of the motor 200, and improve the problem of broken shaft.

[0216] Of course, in other embodiments, please refer to FIG. 28, when the flywheel 300 is located at the middle position, the length extension direction of the elastic member 510 can not point to the swing center of the flywheel 300, which is not specifically limited here.

[0217] The unmanned device of the present embodiment can use the sowing system 110 to sow granular materials such as seeds, and the specific sowing process includes: driving the flywheel 300 to reciprocally swing by the motor 200, and causing the elastic member 510 to elastically deform in the process of the flywheel 300 swinging, and driving the flywheel 300 to swing in the opposite direction by using the elastic potential energy released when the elastic member 510 recovers.

[0218] In summary, the spreading device 020 of the present disclosure can be used in the spreading system 110 of the unmanned device, which can reduce the power consumption of the motor 200, improve the problem of serious heating of the motor 200, and further facilitate the extension of the endurance of the battery providing power to the motor 200, effectively improve the problem of burning loss of the motor 200; and can ensure that the elastic potential energy released by the elastic member 510 is fully converted into the kinetic energy of the reverse swing of the flail plate 300.

[0219] The preferred embodiments of the present disclosure have been described above by way of example only, and are not intended to limit the present disclosure, and various changes and modifications can be made by those skilled in the art based on the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A spreading device, characterized in that The application relates to a seed sowing device, which comprises the following parts: a motor (200); a swinging disc (300) connected with the output shaft of the motor (200), when the seed sowing device works, the output shaft of the motor (200) drives the swinging disc (300) to swing back and forth through positive and reverse rotation; and an elastic member (510), the first end of the elastic member (510) is connected to a fixed position and rotationally connected with the entity at the fixed position, and the second end of the elastic member (510) is rotationally connected with the swinging disc (300) or a swinging member which swings synchronously with the swinging disc (300); when the swinging disc (300) swings, the second end of the elastic member (510) swings with the swinging disc (300), the swinging movement of the swinging disc (300) can be converted into the axial deformation of the elastic member (510), and the elastic member (510) can drive the swinging disc (300) to swing reversely when the elastic potential energy is released.

2. The spreading device according to claim 1, characterized in that The swinging member comprises a swinging arm member (610) arranged on the output shaft of the motor (200), and the second end of the elastic member (510) is rotationally connected with the end of the swinging arm member (610).

3. The spreading device according to claim 2, characterized in that The second end of the elastic member (510) is provided with a connecting head (520), the connecting head (520) is provided with a first shaft hole (521), the swinging arm member (610) comprises two clamping arms (611) which are spaced apart, the clamping arms (611) are provided with second shaft holes (612), the connecting head (520) is arranged between the two clamping arms (611), and the first shaft hole (521) and the second shaft hole (612) are opposite and provided with a first rotating shaft (613).

4. The spreading device according to any one of claims 2-3, characterized in that, The swinging disc (300) is connected with the output shaft of the motor (200) through the swinging arm member (610).

5. The spreading device according to any one of claims 1-4, characterized in that The seed sowing device further comprises a supporting member (400), and the entity at the fixed position is the supporting member (400).

6. The spreading device of claim 5, wherein The supporting member (400) comprises an installation wall (411) arranged in the radial direction of the output shaft of the motor (200), and the fixed position is located on the installation wall (411).

7. The spreading device of claim 6, wherein A connecting seat (420) is arranged at the fixed position of the installation wall (411), and the first end of the elastic member (510) is rotationally connected with the supporting member (400) through the connecting seat (420).

8. The spreading device of claim 7, wherein, The first end of the elastic member (510) is provided with a connecting head (520), the connecting head (520) is provided with a first shaft hole (521), the connecting seat (420) is provided with a plug-in hole (421) and a third shaft hole (422) which is in communication with the plug-in hole (421), the connecting head (520) is plugged into the plug-in hole (421), and the first shaft hole (521) and the third shaft hole (422) are opposite and provided with a second rotating shaft (423).

9. The spreading device according to any one of claims 1-8, characterized in that The elastic member (510) is arranged on a plane which is parallel to the swinging plane of the swinging disc (300), and the elastic force provided by the elastic member (510) is perpendicular to the axial direction of the output shaft of the motor (200).

10. The spreading device according to any one of claims 1-9, characterized in that The elastic member (510) comprises a spring, both ends of the spring are provided with a connecting head (520), the connecting head (520) is provided with a spiral groove (522), when the spiral of the spring is screwed into the spiral groove (522), the connecting head (520) is fixed with the spring.

11. The spreading device of claim 10, wherein, The connecting head (520) is connected with a stop edge (523), the end of the spring can abut against the stop edge (523), and the stop edge (523) is used for preventing the spring from being displaced in the axial direction.

12. The spreading device according to any one of claims 5-8, characterized in that The support (400) has a first side and a second side which are distributed in opposite directions, the flinger (300) is arranged on the first side, the motor (200) is arranged on the second side, and the output shaft of the motor (200) penetrates through the support (400) and is connected with the flinger (300).

13. The spreading device according to any one of claims 1-12, characterized in that The flinger (300) comprises a disc body (310) and a flapper (320) connected to one side of the disc body (310), the output shaft of the motor (200) is connected with the disc body (310), the flapper (320) swings with the disc body (310) and is used for scattering materials, and the elastic member (510) is located on the side of the disc body (310) which is away from the flapper (320).

14. The spreading device according to any one of claims 5-8, characterized in that The support (400) is provided with a containing groove (410), and the elastic member (510) is at least partially located in the containing groove (410).

15. The spreading device of claim 14, wherein, The scattering device further comprises a shielding cover (430), the shielding cover (430) is connected with the support (400), the shielding cover (430) is used for shielding the slot of the containing groove (410), and the elastic member (510) and the flinger (300) are located on the two sides of the shielding cover (430) respectively.

16. The spreading device according to any one of claims 1-15, characterized in that The scattering device comprises at least two elastic members (510).

17. The spreader of claim 16, wherein, The at least two elastic members (510) comprise a first elastic member (511) and a second elastic member (512), when the flinger (300) is located at the middle position, the length extension directions of the first elastic member (511) and the second elastic member (512) are both directed to the swing center of the flinger (300), and when the first elastic member (511) and the second elastic member (512) release the elastic potential energy, the first elastic member (511) and the second elastic member (512) can cooperatively drive the flinger (300) to swing reversely.

18. The spreading device of claim 17, wherein, The first elastic member (511) and the second elastic member (512) are centrally symmetrically distributed with the swing center of the flinger (300) as the center.

19. The spreading device of claim 18, wherein, The first elastic member (511) and the second elastic member (512) are horizontally spaced.

20. The spreading device according to any one of claims 16-19, characterized in that The at least two elastic members (510) comprise a first elastic member (511) and a second elastic member (512), and the first elastic member (511) and the second elastic member (512) are in a stretched state when the flinger (300) is static or swings.

21. A spreading system, characterized by The scattering device comprises a material box (111) and the scattering device according to any one of claims 1-20, the material box (111) is connected with the scattering device, and the material in the material box (111) is scattered by the scattering device.

22. The spreading system of claim 21, wherein, The spreading system further comprises a feeding device (112), the material box (111) is connected with the spreading device through the feeding device (112), and the feeding device (112) is used for receiving the material output by the material box (111) and conveying the received material to the spreading device.

23. An unmanned device, comprising: The unmanned device comprises a device body and the spreading system according to any one of claims 21-22, and the spreading system is arranged on the device body.

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