Spreading apparatus and system and unmanned device

Abstract

Provided are a spreading apparatus (020) and system (110) and an unmanned device. The spreading apparatus (020) can be applied to a spreading system (110) of an unmanned device. The spreading apparatus (020) comprises a motor (200), a throwing disc (300) and an elastic mechanism (500); the throwing disc (300) is connected to an output shaft of the motor (200); when the spreading apparatus (020) works, by means of forward and reverse rotation, the output shaft of the motor (200) drives the throwing disc (300) to swing back and forth; when the throwing disc (300) swings, the elastic mechanism (500) is used for absorbing the kinetic energy of the throwing disc (300) and thus deforming elastically and, when releasing elastic potential energy, the elastic mechanism (500) is used for driving the throwing disc (300) to swing reversely. The spreading apparatus (020) can reduce the power consumption of the motor (200) and ameliorate the problem of serious heat generation of the motor (200), thereby helping to increase the endurance of a battery that supplies electric energy to the motor (200), and effectively ameliorating the problem of burnout of the motor (200).

Description

Spreading device, system and unmanned device

[0001] The present disclosure claims priority to the Chinese patent application No. 202411353721.0, filed on September 26, 2024, entitled "Spreading device, system and unmanned device", and the Chinese patent application No. 202422365236.7, filed on September 26, 2024, entitled "Spreading device, system and unmanned device", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of unmanned device, in particular, to a spreading device, system and unmanned device. BACKGROUND

[0003] Unmanned devices, such as unmanned aerial vehicles or unmanned vehicles, are widely used in the technical field of plant protection, which can specifically include seed spreading, watering and other operations. Unmanned devices for material spreading operations, such as seed or fertilizer, need to carry a spreading system on the unmanned device body. The spreading system usually includes a material box, a feeding device and a spreading device. The material box is connected with the spreading 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 spreading device. The spreading device is used to spread the materials. The spreading device includes a motor and a flail connected with the motor in a transmission manner. The motor drives the flail to reciprocate, which can beat the materials out.

[0004] In related technologies, the spreading device adopts a swing type flail. The motor is connected with the flail through a crank connecting rod mechanism. The motor only needs to rotate in a single direction at a high speed, which can drive the crank connecting rod mechanism to convert the circular motion of the motor into the reciprocating swing of the flail. However, this transmission mode has a complex structure, faces many challenges in reliability, and has a high cost. Moreover, due to the design requiring many structural parts, the device has a high probability of failure, the maintenance frequency increases, and the electronic or industrial waste indirectly aggravates the harm to the environment. In addition, this design has a low energy utilization rate, the flail motor has a high power consumption, which increases the waste of electric power resources and indirectly increases carbon emissions. SUMMARY

[0005] 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 be constantly stopped and accelerated in the opposite direction, which results in a large power consumption of the motor and a serious heating problem. Not only does this affect the endurance of the battery that provides power to the motor, but it also easily burns the motor. Therefore, the present disclosure also provides a spreading device that can be used in the spreading system of unmanned equipment, and the spreading device can reduce the power consumption of the motor, improve the problem of serious heating of the motor, and thereby help to prolong the endurance of the battery that provides power to the motor, and effectively improve the problem of motor burnout.

[0006] Embodiments of the present disclosure are implemented in the following manner:

[0007] In a first aspect, the present disclosure provides a spreading device, comprising:

[0008] a motor;

[0009] a spinning disc connected to the output shaft of the motor, wherein during the operation of the spreading device, the output shaft of the motor drives the spinning disc to reciprocate by forward and reverse rotation; and

[0010] an elastic mechanism for absorbing the kinetic energy of the spinning disc and deforming elastically when the spinning disc swings, and driving the spinning disc to swing in the opposite direction when the elastic potential energy is released.

[0011] In an optional embodiment, the elastic mechanism is arranged on the swing path of the spinning disc, and when the spinning disc swings and hits the elastic mechanism, the elastic mechanism deforms elastically under the impact of the spinning disc and drives the spinning disc to swing in the opposite direction when it returns to its original state.

[0012] In an optional embodiment, the elastic mechanism includes two impact elastic members; one of the two impact elastic members is arranged on the path of the spinning disc swinging in a first direction, and is used to release the elastic potential energy to drive the spinning disc to swing in a second direction after impact; the other of the two impact elastic members is arranged on the path of the spinning disc swinging in the second direction, and is used to release the elastic potential energy to drive the spinning disc to swing in the first direction after impact; wherein the first direction is opposite to the second direction.

[0013] In an optional embodiment, the elastic mechanism is connected to the spinning disc when the spinning disc is stationary or swinging.

[0014] In an optional embodiment, the elastic mechanism includes a torsional elastic member; the spreading device further comprises a support member;

[0015] The torsional elastic member is arranged at the center of the swing of the spinning disc, and one end of the torsional elastic member is connected to the spinning disc and the other end is connected to the support member; the torsional elastic member absorbs the kinetic energy of the spinning disc and deforms torsionally when the spinning disc swings.

[0016] In an optional embodiment, the elastic mechanism comprises an arc-shaped track and an arc-shaped elastic member arranged in the arc-shaped track, the arc-shaped track has the oscillation center of the flail plate as its center, and the arc-shaped elastic member is arranged in the arc-shaped track.

[0017] The spreading device further comprises a first swing arm that swings synchronously with the flail plate, and an end of the first swing arm is connected with the arc-shaped elastic member; when the flail plate swings, the first swing arm compresses or stretches the arc-shaped elastic member.

[0018] In an optional embodiment, the elastic mechanism comprises a straight elastic member, and when the flail plate swings, the oscillation movement of the flail plate can be converted into the axial deformation of the straight elastic member.

[0019] In an optional embodiment, the elastic mechanism further comprises a linear motion assembly, the flail plate is in transmission cooperation with the linear motion assembly, the linear motion assembly is used to convert the swing of the flail plate into linear motion, and the straight elastic member is deformed axially.

[0020] In an optional embodiment, the spreading device further comprises a second swing arm that swings synchronously with the flail plate, the linear motion assembly comprises a first slide rail and a second slide rail, and an end of the second swing arm is in sliding cooperation with the first slide rail; the first slide rail is in sliding cooperation with the second slide rail, the extension directions of the first slide rail and the second slide rail are perpendicular to each other, and the straight elastic member is arranged in the first slide rail or the second slide rail.

[0021] When the flail plate swings, the end of the second swing arm slides in the first slide rail, and drives the first slide rail to slide along the second slide rail, so that the straight elastic member is deformed axially.

[0022] In an optional embodiment, the linear motion assembly comprises a gear and a rack, the gear is connected with the flail plate and arranged at the oscillation center of the flail plate, rotates with the swing of the flail plate, and is in meshing cooperation with the rack; when the flail plate swings and drives the gear to rotate, the gear drives the rack to move along the length direction of the rack, and the rack can make the straight elastic member deformed axially.

[0023] In an optional embodiment, the linear motion assembly comprises a sliding member, a third slide rail and a swing lever, the sliding member is in sliding cooperation with the third slide rail, and both ends of the swing lever are pivotally connected with the sliding member and the flail plate respectively; when the flail plate swings and drives the swing lever to swing, the swing lever drives the sliding member to slide relative to the third slide rail, and the sliding member can make the straight elastic member deformed axially.

[0024] In an optional embodiment, a first end of the straight elastic member is connected to a fixed position and pivotally connected with an entity at the fixed position, and a second end of the straight elastic member is pivotally connected with the flail plate or a swing member that swings synchronously with the flail plate.

[0025] In an optional embodiment, the straight elastic member is arranged on a plane parallel to the oscillation plane of the flail plate, and the elastic force provided by the straight elastic member is perpendicular to the axial direction of the output shaft of the motor.

[0026] In an optional embodiment, the spreading device further comprises a support, the entity at the fixed position is the support, the support has a first side and a second side distributed in opposite directions, the flail plate is arranged at the first side, the motor is arranged at the second side, and the output shaft of the motor is connected with the flail plate through the support.

[0027] In an optional embodiment, the swinging member comprises a third swing arm arranged on the output shaft of the motor, and the second end of the straight elastic member is rotationally connected with the end of the third swing arm.

[0028] In an optional embodiment, the elastic mechanism comprises two straight elastic members, the flail plate is configured to reciprocate on both sides of the set axis around the swinging center thereof, and the two straight elastic members are symmetrically distributed around the swinging center.

[0029] In an optional embodiment, when the flail plate is located at the center position, the length of the straight elastic member extends in the direction of the swinging center of the flail plate.

[0030] In a second aspect, the present disclosure provides a spreading system, comprising a material box and the spreading device of any one of the foregoing embodiments, the material box is connected with the spreading device, and the material in the material box is spread out by the spreading device.

[0031] In an optional embodiment, the spreading system further comprises a feeding device, the material box is connected with the spreading device through the feeding device, and the feeding device is used to receive the material output by the material box and deliver the received material to the spreading device.

[0032] In a third aspect, the present disclosure provides an unmanned device, comprising an unmanned device body and the spreading system of any one of the foregoing embodiments, and the spreading system is arranged on the unmanned device body.

[0033] The spreading device provided by the embodiments of the present disclosure has the following beneficial effects: the spreading device provided by the embodiments of the present disclosure comprises a motor, a flail plate and an elastic mechanism, the flail plate is connected with the output shaft of the motor, during the operation of the spreading device, the output shaft of the motor drives the flail plate to reciprocate by forward and reverse rotation, the elastic mechanism is used to absorb the kinetic energy of the flail plate and elastically deform when the flail plate swings, and the elastic mechanism drives the flail plate to swing reversely when the elastic potential energy is released. In this way, the elastic deformation of the elastic mechanism is used to absorb and store energy, the swinging frequency of the elastic mechanism and the flail plate is adapted, the flail plate is assisted to decelerate and reversely accelerate, the energy consumption of the motor during sudden stop and reverse acceleration is reduced, the problem of serious heating of the motor is improved, and then the battery providing power to the motor is beneficially prolonged, and the problem of motor burning is effectively improved.

[0034] The spreading system of the embodiments of the present disclosure includes all the advantages of the aforementioned spreading device, for example, the elastic deformation of the elastic mechanism absorbs and stores energy, the elastic mechanism is adapted to the swing frequency of the flail plate, and the flail plate is assisted to decelerate and reverse accelerate, so as to reduce the energy consumption of the motor sudden stop and reverse acceleration, improve the problem of serious motor heating, and further help to prolong the endurance of the battery providing power for the motor, effectively improve the problem of motor burning.

[0035] The unmanned device of the embodiments of the present disclosure includes all the advantages of the aforementioned spreading system, for example, the elastic deformation of the elastic mechanism absorbs and stores energy, the elastic mechanism is adapted to the swing frequency of the flail plate, and the flail plate is assisted to decelerate and reverse accelerate, so as to reduce the energy consumption of the motor sudden stop and reverse acceleration, improve the problem of serious motor heating, and further help to prolong the endurance of the battery providing power for the motor, effectively improve the problem of motor burning.

[0036] In the present disclosure, the kinetic energy recovery design of the elastic mechanism converts the mechanical energy when the flail plate swings into elastic potential energy, and drives the flail plate to swing in the opposite direction when the elastic potential energy is released, which can reduce the energy consumption of the motor sudden stop and reverse acceleration, improve the energy utilization rate, save the power resources, thereby indirectly reduce the carbon emission, and meet the current green, environmental protection and energy saving concept. BRIEF DESCRIPTION OF DRAWINGS

[0037] 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 embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Fig. 1 is a structural schematic diagram of the load support and the spreading system of the unmanned device of the present disclosure;

[0039] Fig. 2 is a partial structural schematic diagram of the spreading system of the present disclosure;

[0040] Fig. 3 is a structural schematic diagram of the spreading device of the present disclosure;

[0041] Fig. 4 is a schematic diagram of the reciprocating swing of the flail plate of the spreading device in the first embodiment of the present disclosure;

[0042] Fig. 5 is a structural schematic diagram of the spreading device of other embodiments in the first embodiment of the present disclosure;

[0043] Fig. 6 is a structural schematic diagram of the spreading device of embodiment 1 in the second embodiment of the present disclosure;

[0044] Fig. 7 is a schematic diagram of the reciprocating swing of the flail plate of the spreading device of embodiment 2 in the second embodiment of the present disclosure;

[0045] Figure 8 is a schematic diagram of the reciprocating swing of the flail of the spreading device of Example 3 in the third embodiment of the present disclosure;

[0046] Figure 9 is a schematic diagram of the reciprocating swing of the flail of the spreading device of Example 4 in the third embodiment of the present disclosure;

[0047] Figure 10 is a schematic diagram of the structure of the spreading device of Example 5 in the third embodiment of the present disclosure;

[0048] Figure 11 is a schematic diagram of the reciprocating swing of the flail of the spreading device of Example 6 in the third embodiment of the present disclosure;

[0049] Figure 12 is a schematic diagram of the reciprocating swing of the flail of the spreading device of Example 7 in the third embodiment of the present disclosure;

[0050] Figure 13 is a schematic diagram of the reciprocating swing of the flail of the spreading device of Example 8 in the third embodiment of the present disclosure;

[0051] Figure 14 is a schematic diagram of the exploded structure of the spreading device of Example 8 in the third embodiment of the present disclosure;

[0052] Figure 15 is a schematic diagram of the partial structure of the spreading device of Example 8 in the third embodiment of the present disclosure;

[0053] Figure 16 is a schematic diagram of the structure of the connecting head of Example 8 in the third embodiment of the present disclosure;

[0054] Figure 17 is a schematic diagram of the structure of the third swing arm of Example 8 in the third embodiment of the present disclosure;

[0055] Figure 18 is a schematic diagram of the structure of the spreading device of Example 8 in the third embodiment of the present disclosure.

[0056] Icon: 100 - load support; 110 - spreading system; 111 - material box; 112 - feeding device; 113 - material cover; 114 - material port; 020 - spreading device; 200 - motor; 300 - flail; 310 - disc body; 320 - flail piece; 400 - support; 401 - arc-shaped track; 402 - positioning piece; 403 - fourth sliding rail; 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; 501 - impact elastic piece; 5011 - impact spring; 5012 - base; 502 - torsion elastic piece; 503 - arc-shaped elastic piece; 510 - elastic piece; 511 - first elastic piece; 512 - second elastic piece; 520 - connecting head; 521 - first shaft hole; 522 - helical groove; 523 - blocking edge; 601 - first swing arm; 602 - second swing arm; 610 - third swing arm; 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; 714 - sliding groove; 721 - gear; 722 - rack; 731 - sliding piece; 732 - third sliding rail; 733 - swing lever; a - set axis. DETAILED DESCRIPTION

[0057] 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 herein can be arranged and designed in various different configurations.

[0058] 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. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present disclosure.

[0059] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be alternatively defined and explained in subsequent drawings.

[0060] In the description of the present disclosure, it should be noted that the terms "upper", "lower", "horizontal", "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 application is usually placed, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0061] In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, and it 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.

[0062] Please refer to FIG. 1, the present disclosure provides an unmanned device, which can be referred to as a drone; of course, in other embodiments, the unmanned device can also be referred to as an unmanned vehicle, which is not specifically limited here.

[0063] Please refer to FIG. 1 and FIG. 2, the unmanned device includes an unmanned device body and a sowing system 110 provided 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 vehicle body.

[0064] In other embodiments, the material box 111 can be directly connected with the sowing device 020, that is, the materials output by the material box 111 are not conveyed through the feeding device 112, but directly fall on the sowing device 020 for sowing.

[0065] Please refer to FIG. 2 and FIG. 3, the sowing device 020 of the present disclosure comprises a material cover 113, a motor 200, a support 400 and a flail plate 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 plate 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 driving connection with the flail plate 300, for driving the flail plate 300 to reciprocate about the swing center thereof on both sides of a set axis a, and the swinging flail plate 300 can sow the material falling between the material cover 113 and the support 400 from the material port 114.

[0066] Optionally, the support 400 has a first side and a second side oppositely distributed, the first side is oppositely distributed with the material cover 113, the flail plate 300 is arranged on the first side, the motor 200 is assembled on the second side, and the output shaft of the motor 200 passes through the support 400 and is connected with the flail plate 300. In this way, the integration of the sowing device 020 is improved.

[0067] The flail plate 300 comprises a plate body 310 and a paddle 320 connected to one side of the plate body 310, the output shaft of the motor 200 is connected with the plate body 310, the paddle 320 is oppositely distributed with the material port 114, and the paddle 320 swings with the plate body 310 and is used for sowing the material.

[0068] Optionally, in some embodiments, the motor 200 can be in driving connection with the flail plate 300 through a reduction box, which is not specifically limited here.

[0069] In the related art, the output shaft of the motor 200 is used to drive the flail plate 300 to reciprocate, which requires the motor 200 to constantly stop and accelerate in reverse, resulting in great power consumption and serious heating of the motor 200, which not only affects the endurance of the battery providing power to the motor 200, but also easily burns the motor 200.

[0070] In order to improve the above problems, the sowing device 020 provided by the present disclosure further comprises an elastic mechanism 500, which is used to absorb the kinetic energy of the flail plate 300 when the flail plate 300 swings and to elastically deform, and to drive the flail plate 300 to swing in reverse when the elastic potential energy is released. In this way, the elastic deformation of the elastic mechanism 500 is used to absorb and store energy, so that the swing frequency of the elastic mechanism 500 and the flail plate 300 is adapted, which helps to slow down and accelerate in reverse the flail plate 300, so as to reduce the energy consumption of the motor 200 when stopping and accelerating in reverse, improve the problem of serious heating of the motor 200, and further help to prolong the endurance of the battery providing power to the motor 200, effectively improve the problem of burning of the motor 200.

[0071] The elastic mechanism 500 has various embodiments, which will be described in detail below. Embodiment one

[0072] Please refer to Fig. 4, the elastic mechanism 500 is arranged on the swing path of the swing disc 300, specifically, the elastic mechanism 500 is connected to the support 400; when the swing disc 300 swings and hits the elastic mechanism 500, the elastic mechanism 500 is elastically deformed by the impact of the swing disc 300, and drives the swing disc 300 to swing reversely when it restores to the original state. When the swing disc 300 swings and hits the elastic mechanism 500, the elastic mechanism 500 stores energy by compression, and releases the elastic potential energy when it restores to the original state, thereby providing power for the swing disc 300 to swing reversely, so as to reduce the energy consumption of the motor 200.

[0073] Optionally, the elastic mechanism 500 includes two impact elastic members 501, and the two impact elastic members 501 are both connected to the support 400; one of the two impact elastic members 501 is arranged on the path of the swing disc 300 swinging to the first direction, and is used to release the elastic potential energy to drive the swing disc 300 to swing to the second direction after the impact; the other of the two impact elastic members 501 is arranged on the path of the swing disc 300 swinging to the second direction, and is used to release the elastic potential energy to drive the swing disc 300 to swing to the first direction after the impact; wherein the first direction is opposite to the second direction. In this way, the two impact elastic members 501 can provide the swing disc 300 with the elastic potential energy to drive the swing disc 300 to swing reversely when the swing disc 300 swings back and forth, so as to reliably reduce the energy consumption of the motor 200.

[0074] Optionally, the disc body 310 of the swing disc 300 is coaxially connected with a first swing arm 601 which swings synchronously with the swing disc 300, the length extension direction of the first swing arm 601 is perpendicular to the swing axis of the swing disc 300, and the length extension direction of the first swing arm 601 is perpendicular to the setting axis a when the swing disc 300 is located at the middle position; the two ends of the length extension direction of the first swing arm 601 are respectively used to hit the two impact elastic members 501. The swing disc 300 and the first swing arm 601 can be directly connected or indirectly connected, which is not specifically limited here.

[0075] Optionally, the first swing arm 601 and the two impact elastic members 501 are distributed in a plane parallel to the swing plane of the swing disc 300.

[0076] Of course, in other embodiments, the first swing arm 601 and the two impact elastic members 501 can also be distributed in a plane not parallel to the swing plane of the swing disc 300.

[0077] Alternatively, in other embodiments, please refer to Fig. 5, the two sides of the swing direction of the swing disc 300 are respectively configured to hit the corresponding impact elastic members 501, and the like, which is not specifically limited here.

[0078] Optionally, please refer to FIG. 4, the impact elastic member 501 includes an impact spring 5011 and a base 5012, the impact spring 5011 is connected to the side of the support 400 facing the material cover 113 through the base 5012, the impact spring 5011 can be impacted by the end of the first swing arm 601 and drive the reverse swing of the flail 300 when it restores to its original shape. Of course, in other embodiments, the impact spring 5011 can also be replaced by an elastic rubber block, and the impact spring 5011 or the elastic rubber block can be directly connected to the support 400 instead of being connected to the support 400 through the base 5012, which is not specifically limited here.

[0079] It should be understood that in other embodiments, the elastic mechanism 500 can also be provided on the flail 300, which swings synchronously with the flail 300 when the flail 300 swings and can impact the impact part provided on the support 400 or the load bracket 100 to compress the energy storage.

[0080] Alternatively, in other embodiments, the elastic mechanism 500 can also be provided on the load bracket 100, as long as it is ensured that the elastic mechanism 500 is located in the swing path of the flail 300 and can be impacted by the flail 300, which is not specifically limited here.

[0081] The compression of the elastic mechanism 500 by impact will cause energy loss due to the elastic deformation and sliding between the interface of the elastic mechanism 500 and the part that impacts it. During the operation of the flail 300 reciprocating swing and spreading material, the impact frequency of the elastic mechanism 500 is high, and the impact speed is fast, the kinetic energy of the flail 300 is converted into the elastic potential energy of the elastic mechanism 500 in a very short time, the intermittent elastic mechanism 500 will be subjected to high-frequency and powerful impact, the entire intermittent structure (i.e. the elastic mechanism 500) will vibrate greatly, resulting in instability of the entire structure and poor reliability. In order to improve the above problems, the present disclosure provides embodiment two. Embodiment two

[0082] The elastic mechanism 500 no longer uses the impact of the flail 300 to generate elastic deformation to store energy; the elastic mechanism 500 remains in a state of mutual connection with the flail 300 when the flail 300 is stationary and swings. Embodiment two includes multiple specific embodiments, which will be described in detail below. Embodiment 1

[0083] Please refer to Fig. 6, the elastic mechanism 500 includes a torsional spring 502, the torsional spring 502 is arranged in the swing center of the flail plate 300, and one end of the torsional spring 502 is connected with the flail plate 300, and the other end is connected with the support 400; the torsional spring 502 absorbs the kinetic energy of the flail plate 300 when the flail plate 300 swings and occurs torsional deformation. Specifically, in the embodiment, the torsional spring 502 is a spring, which is sleeved on the output shaft of the motor 200, and one end of the torsional spring 502 is connected with the flail plate 300, and the other end is connected with the support 400, when the flail plate 300 swings, the flail plate 300 drives the torsional spring 502 to twist and store energy, that is, when the torsional spring 502 overcomes the torsional reset, it drives the flail plate 300 to rotate reversely, so as to reduce the energy consumption of driving the flail plate 300 to swing reversely by the motor 200.

[0084] Of course, in other embodiments, the torsional spring 502 can also be a torsional spring, and the two torsional arms of the torsional spring are respectively connected with the flail plate 300 and the support 400.

[0085] It should be noted that the torsion in the torsional spring 502 is a limitation on its deformation mode, that is, it refers to its torsional deformation after being subjected to the force of the swinging flail plate 300, rather than a limitation on its structure or shape.

[0086] The connection mode of the torsional spring 502 with the flail plate 300 and the support 400 includes but is not limited to welding, connection through fasteners such as bolts. Embodiment 2

[0087] Please refer to Fig. 7, the elastic mechanism 500 includes an arc-shaped track 401 and an arc-shaped spring 503 arranged in the arc-shaped track 401, wherein the arc-shaped track 401 is connected to the support 400, and the arc-shaped track 401 takes the swing center of the flail plate 300 as the center, and the arc-shaped spring 503 is arranged in the arc-shaped track 401; the spreading device 020 further includes a first swing arm 601 which swings synchronously with the flail plate 300, and the end of the first swing arm 601 is connected with the arc-shaped spring 503; when the flail plate 300 swings, the first swing arm 601 compresses or stretches the arc-shaped spring 503, and the arc-shaped spring 503 deforms along the track of the arc-shaped track 401. In this way, the arc-shaped spring 503 arranged in the arc-shaped track 401 can more reliably deform elastically, and the arc-shaped spring 503 can reliably reset and reliably drive the flail plate 300 to swing reversely under the elastic action of itself.

[0088] Optionally, the disc 300 is connected with two first swing arms 601, the two first swing arms 601 swing back and forth with the disc 300, and the ends of the two first swing arms 601 away from the disc 300 are in sliding fit with the arc-shaped track 401; the elastic mechanism 500 includes two arc-shaped elastic members 503, the two arc-shaped elastic members 503 are arranged in the arc-shaped track 401, one end of the two arc-shaped elastic members 503 is connected with the ends of the two first swing arms 601 away from the disc 300, the other end of the two arc-shaped elastic members 503 is connected with the positioning member 402 connected with the first track, and the two arc-shaped elastic members 503 are located on the two sides of the positioning member 402. When the disc 300 swings, one of the first swing arms 601 stretches the corresponding arc-shaped elastic member 503, and the other first swing arm 601 compresses the corresponding arc-shaped elastic member 503, so that the elastic force released when the two arc-shaped elastic members 503 recover drives the disc 300 to swing reversely, and the reliability of driving the disc 300 to swing reversely by the arc-shaped elastic member 503 is ensured.

[0089] Of course, in other embodiments, the disc 300 is connected with only one first swing arm 601, the end of the first swing arm 601 away from the disc 300 is in sliding fit with the arc-shaped track 401; the elastic mechanism 500 includes two arc-shaped elastic members 503, the two arc-shaped elastic members 503 are arranged in the arc-shaped track 401, one end of the two arc-shaped elastic members 503 is connected with the end of the first swing arm 601 away from the disc 300, the other end of the two arc-shaped elastic members 503 is connected with the end of the arc-shaped track 401 in the length extension direction, and the two arc-shaped elastic members 503 are distributed on the two sides of the first swing arm 601; when the disc 300 swings, the first swing arm 601 stretches one of the arc-shaped elastic members 503 and compresses the other arc-shaped elastic member 503, so that the elastic force released when the two arc-shaped elastic members 503 recover drives the disc 300 to swing reversely, and the reliability of driving the disc 300 to swing reversely by the arc-shaped elastic member 503 is ensured.

[0090] It should be noted that the stretching and compression of the arc-shaped elastic member 503 above refers to the change in length, and does not represent the change in elasticity, i.e., the stretching and compression do not mean that the arc-shaped elastic member 503 is in a state of providing tension or thrust.

[0091] It should be further noted that the arc-shaped elastic member 503 above can be in an arc shape in a natural state when it is not arranged in the arc-shaped track 401, or can be in an arc shape when it is arranged in the arc-shaped track 401. The arc-shaped elastic member 503 can be a spring, an elastic rubber strip, or the like, which is not limited here.

[0092] In the embodiment 1, the torsional spring 502 is hard connected with the flywheel 300, and there is a stress concentration problem at the connection position, which is easy to cause abrasion and has poor reliability. In the embodiment 2, the arc spring 503 is arranged in the arc track 401, and there is a large sliding friction between the arc spring 503 and the arc track 401 during the stretching or compression process, which causes a large energy loss and is not conducive to reducing the motor power consumption. In order to solve the above problems, the present disclosure provides a third embodiment. Third embodiment

[0093] Please refer to FIGS. 8-12, the elastic mechanism 500 includes a straight spring (hereinafter referred to as the spring 510), when the flywheel 300 swings, the swing movement of the flywheel 300 can be converted into the axial deformation of the spring 510. In this way, the kinetic energy of the flywheel 300 can be more absorbed by the spring 510, and the elastic potential energy released by the spring 510 can also be more converted into the driving force for the flywheel 300 to swing in the opposite direction, reducing the energy loss and improving the connection stability between the spring 510 and the flywheel 300, reducing the abrasion, and further improving the reliability of the flywheel 300 assisted by the spring 510 to swing in the opposite direction.

[0094] It should be noted that the straight spring refers to a spring or rubber that is designed to deform axially when subjected to an external force, such as a spring or rubber that can stretch or compress in the length direction.

[0095] The third embodiment includes a plurality of specific embodiments, some of which use the linear motion assembly 700 of the elastic mechanism 500 to convert the circular motion of the flywheel 300 into linear motion, so that the spring 510 is stretched or compressed linearly, that is, the flywheel 300 is in driving cooperation with the linear motion assembly 700, the linear motion assembly 700 is used to convert the swing of the flywheel 300 into linear motion, and the spring 510 is deformed axially; while in some other embodiments, the linear motion assembly 700 is not needed; the following will describe the plurality of embodiments in detail. Embodiment 3

[0096] Please refer to Figure 8, 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 slide rail 711 and a second slide rail 712, the other end of the second swing arm 602 is in sliding fit with the first slide rail 711; the first slide rail 711 is in sliding fit with the second slide rail 712, 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 flail 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. Through the configuration of the two-dimensional slide rail assembly, the swing of the flail plate 300 is converted into linear motion in the first slide rail 711, and the elastic member 510 is made to stretch and contract by the second swing arm 602, so that 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 flail plate 300 to swing reversely synchronously, 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.

[0097] Optionally, the second slide rail 712 is connected to the first side of the support 400, the length extension direction of the second slide rail 712 is parallel to the set 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 comprises two elastic members 510, the first slide rail 711 has a linear slide groove, both of the elastic members 510 are arranged in the slide groove of the first slide rail 711, and the first ends of both of the elastic members 510 are respectively connected to the two ends of the first slide rail 711 in the length direction, and the second ends of both of the elastic members 510 are connected with the end of the slide groove of the first slide rail 711 to which the second swing arm 602 is slidably arranged. When the flail plate 300 swings, the second swing arm 602 swings synchronously, the second swing arm 602 compresses one of the elastic members 510 and stretches the other elastic member 510, so that both of the elastic members 510 can cooperatively drive the second swing arm 602 and the flail plate 300 to swing reversely. Embodiment 4

[0098] Please refer to Figure 9, 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 slide rail 711 and a second slide rail 712, the second slide rail 712 is connected with the support 400, and the end of the second swing arm 602 is in sliding fit with the first slide rail 711; the first slide rail 711 is in sliding fit with the second slide rail 712, and the extending directions of the first slide rail 711 and the second slide rail 712 are perpendicular; the elastic member 510 is arranged in the second slide rail 712; when the flail 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. Through the configuration of the two-dimensional slide rail assembly, the swing of the flail plate 300 is converted into the linear motion of the first slide rail 711, and the elastic member 510 is stretched and contracted by the first slide rail 711, so that 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 flail plate 300 to swing reversely synchronously, ensuring the reliability of the flail plate 300 swinging back and forth by the elastic action of the elastic member 510, reducing the loss of elastic potential energy, and improving the reliability.

[0099] Optionally, the first slide rail 711 is connected with a sliding block 713, the sliding block 713 is slidably connected with the second slide rail 712, that is, the first slide rail 711 is in sliding fit 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 flail plate 300 swings, the end of the second swing arm 602 away from the flail plate 300 slides along the first slide rail 711 and drives the first slide rail 711 to drive the sliding block 713 to slide in the second slide rail 712, so that the elastic member 510 is stretched and contracted by the sliding block 713, and when the elastic member 510 recovers, the elastic member 510 drives the sliding block 713 to slide reversely and drives the second swing arm 602 and the flail plate 300 to swing reversely by the first slide rail 711.

[0100] Optionally, the length extending direction of the first slide rail 711 is parallel to the length extending direction of the setting axis a. In this way, when the flail plate 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 drive the sliding block 713 to slide in the second slide rail 712.

[0101] Optionally, the first slide rail 711 and the sliding block 713 are connected at an angle and form a "T" shape, and the end of the sliding block 713 away from the first slide rail 711 is in sliding fit with the second slide rail 712.

[0102] The included angle between the first sliding rail 711 and the sliding block 713 is not limited, and includes but is not limited to 90°, 85°, 80°.

[0103] Of course, in other embodiments, the first sliding rail 711 and the sliding block 713 are connected at an included angle, and both form an "L" shape.

[0104] The number of elastic mechanisms 500 can be selected as needed; in the embodiment, the spreading device 020 includes two elastic mechanisms 500, and it can be understood that the spreading device 020 includes two elastic members 510 and two linear motion assemblies 700, which are matched one by one, that is, when the flywheel 300 swings, the two sets of elastic members 510 and linear motion assemblies 700 are used to swing the flywheel 300 in the opposite direction, to ensure the reliability of the flywheel 300 swinging in the opposite direction by the elastic member 510. Of course, in other embodiments, the number of elastic mechanisms 500 can be increased or decreased as needed, which is not limited here.

[0105] Optionally, the middle part of the second swing arm 602 is connected coaxially with the flywheel 300, and the two ends of the length extension direction of the second swing arm 602 are respectively slidably connected with the first sliding 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.

[0106] Optionally, the two elastic mechanisms 500 are centrally symmetrically distributed about the swing center of the flywheel 300, 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 exerted by the elastic members 510 of the two elastic mechanisms 500 on the output shaft of the motor 200 can cancel each other out, and the elastic members 510 of the two elastic mechanisms 500 are synchronously elongated or shortened. In this way, the problem that the force exerted by the elastic member 510 on the output shaft of the motor 200 has a radial component, which causes the output shaft of the motor 200 to be easily pulled and thus has a risk of shaft breakage, can be improved.

[0107] 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, welding, etc.

[0108] 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.

[0109] Optionally, when the flywheel 300 is at the middle position, the length extension directions of the two elastic members 510 both point to the swing center of the flywheel 300. The above-mentioned flywheel 300 at the middle position can refer to the position state of the flywheel 300 when it is not affected by the forces of the motor 200 and the elastic member 510 and is at rest. Example 5

[0110] Please refer to FIG. 10, the spreading device 020 further comprises a second swing arm 602 which swings synchronously with the flywheel 300, specifically, one end of the second swing arm 602 is coaxially connected with the disc body 310 of the flywheel 300, the linear motion assembly 700 comprises a first slide rail 711 and a second slide rail 712, the second slide rail 712 is connected with the support 400, and the end of the second swing arm 602 is in sliding fit with the first slide rail 711; the first slide rail 711 is in sliding fit with the second slide rail 712, and the extension directions of the first slide rail 711 and the second slide rail 712 are perpendicular; the elastic member 510 is arranged on the second slide rail 712; when the flywheel 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. Through the configuration of the two-dimensional slide rail assembly, the swing of the flywheel 300 is converted into the linear motion of the first slide rail 711, and the elastic member 510 is stretched and contracted by the first slide rail 711, 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 flywheel 300 to swing reversely synchronously, which ensures the reliability of the flywheel 300 swinging reciprocatingly by the elastic action of the elastic member 510, reduces the loss of the elastic potential energy, and improves the reliability.

[0111] Optionally, the linear motion assembly 700 comprises two slide blocks 713 and two second slide rails 712; the elastic mechanism 500 comprises two elastic members 510, the length extension direction of the first slide rail 711 coincides with the setting axis a, and the two elastic members 510 are distributed on the two sides of the setting axis a along the horizontal direction; the two second slide rails 712 are oppositely and spacedly connected with the support 400; the two elastic members 510 are correspondingly arranged with the two second slide rails 712, that is, one elastic member 510 is arranged in each second slide rail 712; the two slide blocks 713 are connected with the first slide rail 711, and the two slide blocks 713 are correspondingly connected with the two second slide rails 712, and the two ends of each elastic member 510 are respectively connected with the corresponding slide block 713 and second slide rail 712. When the flywheel 300 drives the second swing arm 602 to swing synchronously, the second swing arm 602 slides in the first slide rail 711, and drives the first slide rail 711 to drive the two slide blocks 713 to slide in the corresponding second slide rails 712 respectively, so as to drive one of the slide blocks 713 to drive the corresponding elastic member 510 to lengthen, and simultaneously drive the other slide block 713 to drive the corresponding elastic member 510 to shorten. In this way, when the two elastic members 510 recover and release the elastic potential energy, the corresponding slide blocks 713 are driven to reset, and the first slide rail 711 drives the second swing arm 602 and the flywheel 300 to swing reversely by the slide blocks 713. Example 6

[0112] Please refer to Fig. 11, the linear motion assembly 700 comprises a gear 721 and a rack 722, the gear 721 is connected with the flywheel 300 and is arranged at the oscillation center of the flywheel 300, and rotates with the flywheel 300; the gear 721 is engaged with the rack 722, when the flywheel 300 oscillates and drives the gear 721 to rotate, the gear 721 drives the rack 722 to move along the length direction of the rack 722, and the rack 722 can make the elastic member 510 axially deform.

[0113] Optionally, the rack 722 is slidably connected with the support 400 and is located at the first side of the support 400, the sliding direction of the rack 722 is perpendicular to the set axis a, specifically, the support 400 is connected with a sliding block 713, the rack 722 is provided with a sliding groove 714, and the sliding block 713 and the sliding groove 714 are in sliding fit; the support 400 is further provided with a fourth sliding rail 403, the length direction of the fourth sliding rail 403 is perpendicular to the set axis a; the elastic member 510 is arranged in the fourth sliding rail 403, one end of the elastic member 510 is connected with the fourth sliding rail 403, and the other end is connected with the rack 722; when the flywheel 300 oscillates and drives the gear 721 to rotate, the gear 721 drives the rack 722 to slide relative to the support 400, and the rack 722 can make the elastic member 510 stretch or shorten, that is, when the elastic member 510 restores and releases the elastic potential energy, the rack 722 is reset and drives the gear 721 to rotate reversely, so as to drive the flywheel 300 to oscillate reversely by the gear 721.

[0114] Optionally, the elastic mechanism 500 comprises two elastic members 510, the support 400 is provided with two fourth sliding rails 403, and the two elastic members 510 are arranged in one-to-one correspondence with the two fourth sliding rails 403; the two ends of the length direction of the rack 722 are connected with the two elastic members 510 respectively. When the flywheel 300 oscillates, the rack 722 drives one of the elastic members 510 to shorten and the other elastic member 510 to stretch; when the two elastic members 510 restore and release the elastic potential energy, the rack 722 is reset and drives the gear 721 to rotate reversely by the rack 722, so as to drive the flywheel 300 to oscillate reversely by the gear 721. Embodiment 7

[0115] Please refer to FIG. 12, the linear 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, and the swing lever 733 is pivoted at two ends with the sliding piece 731 and the flywheel 300 respectively, 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 swing lever 733 to reversely swing by the sliding piece 731, and drives the flywheel 300 to reversely swing by the swing lever 733.

[0116] The number of the elastic mechanism 500 can be selected according to the need; the sowing device 020 of the embodiment includes two elastic mechanisms 500, and it can be understood that the sowing device 020 includes two elastic pieces 510 and two linear motion assemblies 700, the two elastic pieces 510 are arranged in one-to-one correspondence with the third slide rails 732 of the two linear motion assemblies 700, and the third slide rails 732 are connected to the first side of the support 400, and the elastic piece 510 is arranged in the corresponding third slide rail 732; the sowing device 020 further includes a second swing arm 602 coaxially connected with the disc body 310 of the flywheel 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 lever 733 of the two linear motion assemblies 700, that is, the swing lever 733 is pivoted with the flywheel 300 through the second swing arm 602, the other end of the swing lever 733 of the two linear motion assemblies 700 is slidably connected with the corresponding sliding piece 731, the sliding piece 731 of the two linear motion assemblies 700 is in sliding fit with the corresponding third slide rail 732, and the two ends of the elastic piece 510 are respectively connected with the corresponding third slide rail 732 and the sliding piece 731. When the flywheel 300 swings, the second swing arm 602 synchronously swings to drive the two swing levers 733 to swing, the swing lever 733 drives the corresponding sliding piece 731 to slide in the third slide rail 732, so that the two sliding pieces 731 make the two elastic pieces 510 synchronously elongate or shorten; when the two elastic pieces 510 restore and release the elastic potential energy, the corresponding sliding piece 731 is reversely driven to slide, so that the swing lever 733 is reversely driven to swing by the sliding piece 731, and the flywheel 300 is reversely driven to swing by the swing lever 733. Of course, in other embodiments, the number of the elastic mechanism 500 can be increased or decreased according to the need, which is not specifically limited here.

[0117] Optionally, the two elastic mechanisms 500 are symmetrically distributed with the swing center of the flywheel 300 as the center, and the output shaft of the motor 200 is drivingly connected to 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 counteracted, and the elastic members 510 of the two elastic mechanisms 500 are synchronously elongated or shortened. In this way, the force applied by the elastic member 510 to the output shaft of the motor 200 can have a radial component, which can cause the output shaft of the motor 200 to be easily pulled and thus increase the risk of shaft breakage.

[0118] 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.

[0119] Optionally, the two elastic mechanisms 500 are symmetrically distributed on both sides of the set axis a, and the two elastic members 510 are symmetrically distributed in the horizontal direction on both sides of the set axis a.

[0120] Optionally, when the flywheel 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 flywheel 300. The flywheel 300 in the middle position can refer to the position state of the flywheel 300 when it is not affected by the forces of the motor 200 and the elastic member 510 and is at rest.

[0121] In the above embodiments 3-7, when the kinetic energy of the flywheel 300 is converted into the elastic potential energy of the elastic member 510, the first slide rail 711 of the embodiment 3 is subjected to the force in the length extension direction of the non-second slide rail 712, so that there is friction between the first slide rail 711 and the second slide rail 712, the second swing arm 602 of the embodiment 4 and the embodiment 5 is subjected to the force in the length extension direction of the non-first slide rail 711, so that there is friction between the second swing arm 602 and the first slide rail 711, the slide block 713 of the embodiment 6 is also subjected to the force in the length extension direction of the non-groove 714, so that there is friction when the rack 722 slides, and the sliding member 731 of the embodiment 7 is subjected to the force in the length extension direction of the non-third slide rail 732, so that there is friction between the sliding member 731 and the third slide rail 732, which can reduce the conversion rate of the elastic potential energy. Moreover, the embodiments 3-7 convert the swing of the flywheel 300 into 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 8 is proposed. Embodiment 8

[0122] Please refer to Fig. 13, the first end of the elastic member 510 is connected to a fixed position and rotationally connected with the entity at the fixed position. Alternatively, 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 flinger 300 or the oscillating member that oscillates synchronously with the flinger 300. When the flinger 300 oscillates, the second end of the elastic member 510 oscillates with the flinger 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 flinger 300, but also rotates around the fixed position where it is connected. Thus, the elastic member 510 can always maintain a straight shape during the oscillation of the second end, and the oscillation of the flinger 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 flinger 300 to oscillate reversely. In this way, the circular arc motion can be converted into linear motion without additional linear motion assembly 700, and the variable length of the elastic member 510 can be used to directly absorb and release energy during the circular arc motion, avoiding unnecessary energy loss, improving energy conversion efficiency, 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 used to reduce the energy consumption of the motor 200 driving the flinger 300 to rotate reciprocally.

[0123] Alternatively, please refer to Fig. 14, along the length extension direction of the oscillation axis of the flinger 300 (i.e. the dashed line in Fig. 14), the elastic member 510 is located between the support member 400 and the flinger 300, that is, the elastic member 510 is arranged on a plane parallel to the oscillation plane of the flinger 300. Alternatively, the elastic member 510 is located on the side of the disc body 310 of the flinger 300 away from the paddle 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 flinger 300 to spread the material, and can ensure that the elastic potential energy of the elastic member 510 is converted into the power of the flinger 300 to oscillate reversely as much as possible, improving the energy conversion efficiency.

[0124] Of course, in other embodiments, the elastic member 510 can also be arranged on the plane where the flinger 300 oscillates.

[0125] Alternatively, in other embodiments, the first end of the elastic member 510 can also be rotationally connected with the load bracket 100, etc., which is not specifically limited here.

[0126] Alternatively, in the present embodiment, please refer to Figs. 14 and 15, the oscillating member includes a third swing arm 610 (also referred to as a swing arm member) 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 third swing arm 610. In this way, the elastic member 510 can reliably drive the flinger 300 to oscillate reversely.

[0127] Optionally, the elastic mechanism 500 comprises 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 flywheel 300, the third swing arm 610 is located between the support member 400 and the flywheel 300, the middle part of the third swing arm 610 is connected with the output shaft of the motor 200, and the middle part of the third swing arm 610 is in driving connection with the flywheel 300, so that the output shaft of the motor 200 is in driving connection with the disc body 310 of the flywheel 300 through the third swing arm 610; the two ends of the length extension direction of the third swing arm 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 reliably drive the flywheel 300 to swing in the opposite direction.

[0128] It should be understood that in other embodiments, the number of elastic members 510 can also be increased or decreased as needed, for example, 4 elastic members 510, 6 elastic members 510, etc., which are not specifically limited here.

[0129] The connection mode of the output shaft of the motor 200 and the third swing arm 610, and the connection mode of the third swing arm 610 and the flywheel 300 include but are not limited to insertion, clamping, welding, which are not specifically limited here.

[0130] It should be understood that in other embodiments, the third swing arm 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 third swing arm 610.

[0131] Optionally, in other embodiments, a plurality of elastic members 510 can be distributed on the same side of the set axis a; or, in other embodiments, a plurality of elastic members 510 can be asymmetrically distributed on both sides of the set axis a; or, a plurality of elastic members 510 are symmetrically but not centrally symmetrically distributed on both sides of the set axis a, etc., which are not specifically limited here.

[0132] Optionally, in the present embodiment, please refer to FIG. 15, the first elastic member 511 and the second elastic member 512 are centrally symmetrically distributed with respect to the swing center of the flywheel 300. When the flywheel 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 cancel each other out, and the first elastic member 511 and the second elastic member 512 elongate or shorten synchronously. In this way, the problem that the output shaft of the motor 200 is prone to breaking under the radial force of the elastic member 510 can be improved, that is, the radial force of the first elastic member 511 acting on the output shaft of the motor 200 and the radial force of the second elastic member 512 acting on the output shaft of the motor 200 cancel each other out.

[0133] Optionally, in the embodiment, please refer to Figure 15, when the flywheel 300 is located at the middle position (the position of the flywheel in Figure 15 is 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 setting axis a, and the first elastic member 511 and the second elastic member 512 are distributed on both sides of the setting axis a in a horizontal direction; 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 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 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, 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 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 be mutually cooperative rather than mutually resistant.

[0134] Of course, in other embodiments, 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; or, in other embodiments, 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, 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.

[0135] Optionally, the two elastic members 510 (i.e., the first elastic member 511 and the second elastic member 512) in the embodiment are similar in their own structures and the connection modes with the third swing arm 610 and the support member 400, and only one of the elastic members 510 is introduced in detail here.

[0136] Optionally, referring to FIG. 14, FIG. 16 and FIG. 17, 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 third swing arm 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 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 elastic member 510 and the third swing arm 610 are easy to assemble and stable after assembly, and the second end of the elastic member 510 can rotate smoothly around the first rotating shaft 613.

[0137] Optionally, the support member 400 comprises a mounting wall 411 which is arranged radially on 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, and the elastic member 510 can be effectively prevented from interfering with the flinger 300 to scatter the materials.

[0138] Optionally, the mounting wall 411 is provided with a connecting seat 420 at the fixed position, 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 rotationally connecting the first end of the elastic member 510 with the fixed position is ensured.

[0139] 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 which is 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 elastic member 510 and the connecting seat 420 are easy to assemble and stable after assembly, and the first end of the elastic member 510 can rotate smoothly around the second rotating shaft 423.

[0140] The way of connecting any end of the elastic member 510 with the corresponding connecting head 520 can be selected as needed; referring to FIG. 14 and FIG. 16, 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 connection between the spring and the connecting head 520 is easy to operate, and stable after connection.

[0141] 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 displaced along the axial direction. In this way, the spring stress concentration problem can be improved, and the spring can be well adapted to various complex and harsh working conditions such as vibration, high-frequency stretching, impact, and the like, so that the service life and reliability of the spring are improved.

[0142] 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.

[0143] In other embodiments, the elastic member 510 can also include an elastic rubber strip or the like, which is not limited here.

[0144] In the embodiment, please refer to FIG. 14, 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.

[0145] 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, connection with fasteners such as bolts, or the like, which is not limited here.

[0146] 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.

[0147] Optionally, please refer to FIG. 14 and FIG. 18, 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. In this way, the interference of the material on the elastic member 510 can be reduced, so as to ensure that the elastic member 510 can reliably release the elastic potential energy to drive the swing plate 300 to swing in the reverse direction.

[0148] The connection manner of the shielding cover 430 and the support member 400 includes but is not limited to clamping and connection through fasteners such as bolts.

[0149] Optionally, in the embodiment, the first elastic member 511 and the second elastic member 512 are both in the stretched state when the flail 300 is static, and are also in the stretched state when the flail 300 swings; that is, the first elastic member 511 and the second elastic member 512 are both in the stretched state whether in the static state or the 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.

[0150] Of course, in other embodiments, the first elastic member 511 and the second elastic member 512 are both in the stretched state when the flail 300 swings, and are in the natural state (i.e. neither stretched nor compressed) when the flail 300 is static; in this way, the service life of the first elastic member 511 and the second elastic member 512 can be prolonged.

[0151] Alternatively, in other embodiments, the first elastic member 511 and the second elastic member 512 are both in the compressed state when the flail 300 is static, and are in the stretched state when the flail 300 swings.

[0152] It should be understood that, in other embodiments, the second end of the elastic member 510 can also be connected to a position of the flail 300 away from the swing center thereof, and the elastic direction of 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 flail 300 away from the swing center thereof, and the first elastic member 511 and the second elastic member 512 are respectively located on both sides of the set axis a; when the flail 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 flail 300 to swing in the opposite direction.

[0153] It should be noted that the stretching and shortening of each elastic member 510 of the present disclosure refers to the change in length, and does not represent the change in elasticity, that is, the stretching and compression do not mean that the elastic member 510 is in the state of providing pulling force or pushing force.

[0154] The unmanned device of the present disclosure can use the sowing system 110 to sow granular materials such as seeds, and the specific sowing process includes: driving the flail 300 to reciprocally swing by the motor 200, and causing the elastic mechanism 500 to elastically deform in the process of the flail 300 swinging, and driving the flail 300 to swing in the opposite direction by using the elastic potential energy released when the elastic mechanism 500 recovers.

[0155] 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 improving the problem of burning loss of the motor 200.

[0156] The above is only the preferred embodiments and examples of the present disclosure, and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure, and the schemes of the various embodiments and examples which are not contradictory can be combined, replaced, etc.

Claims

1. A spreading device, characterized in that The application relates to a seed sowing device. The seed sowing device comprises: a motor (200); a swinging disc (300) connected with the output shaft of the motor (200), wherein the output shaft of the motor (200) drives the swinging disc (300) to swing back and forth through positive and reverse rotation when the seed sowing device works; and an elastic mechanism (500) for absorbing kinetic energy of the swinging disc (300) and elastically deforming when the swinging disc (300) swings, and driving the swinging disc (300) to swing reversely when the elastic potential energy is released. The elastic mechanism (500) is arranged on the swinging path of the swinging disc (300), and when the swinging disc (300) swings and hits the elastic mechanism (500), the elastic mechanism (500) is elastically deformed by the impact of the swinging disc (300), and drives the swinging disc (300) to swing reversely when the elastic mechanism (500) restores to the original state. The elastic mechanism (500) comprises two impact elastic members (501), one of the two impact elastic members (501) is arranged on the path of the swinging disc (300) swinging in a first direction, and is used for releasing the elastic potential energy to drive the swinging disc (300) to swing in a second direction after the impact; the other of the two impact elastic members (501) is arranged on the path of the swinging disc (300) swinging in the second direction, and is used for releasing the elastic potential energy to drive the swinging disc (300) to swing in the first direction after the impact; wherein the first direction is opposite to the second direction.

2. The spreading device according to claim 1, characterized in that The elastic mechanism (500) is connected with the swinging disc (300) when the swinging disc (300) is static or swings.

3. The spreading device according to claim 2, characterized in that The elastic mechanism (500) comprises a torsional elastic member (502), and the seed sowing device further comprises a supporting member (400).

4. The spreader of claim 1, wherein The torsional elastic member (502) is arranged at the swinging center of the swinging disc (300), one end of the torsional elastic member (502) is connected with the swinging disc (300), and the other end is connected with the supporting member (400); the torsional elastic member (502) absorbs the kinetic energy of the swinging disc (300) and is torsionally deformed when the swinging disc (300) swings.

5. The spreading device of claim 4, wherein, The elastic mechanism (500) comprises an arc-shaped track (401) and an arc-shaped elastic member (503) arranged in the arc-shaped track (401), the arc-shaped track (401) takes the swinging center of the swinging disc (300) as the center, and the arc-shaped elastic member (503) is arranged in the arc-shaped track (401). The seed sowing device further comprises a first swinging arm (601) swinging synchronously with the swinging disc (300), the end of the first swinging arm (601) is connected with the arc-shaped elastic member (503); when the swinging disc (300) swings, the first swinging arm (601) compresses or stretches the arc-shaped elastic member (503).

6. The spreading device of claim 4, wherein The elastic mechanism (500) comprises a straight elastic member, and the swinging motion of the swinging disc (300) can be converted into the axial deformation of the straight elastic member when the swinging disc (300) swings. ​ 7. The spreader of claim 4, wherein ​ 8. The spreading device of claim 7, wherein, The elastic mechanism (500) further comprises a linear motion assembly (700), the swinging disc (300) is in transmission cooperation with the linear motion assembly (700), the linear motion assembly (700) is used for converting the swing of the swinging disc (300) into linear motion and making the straight elastic member axially deform.

9. The spreading device of claim 8, wherein, The spreading device further comprises a second swing arm (602) swinging synchronously with the swinging disc (300), the linear motion assembly (700) comprises a first slide rail (711) and a second slide rail (712), the end of the second swing arm (602) is in sliding cooperation with the first slide rail (711); the first slide rail (711) is in sliding cooperation with the second slide rail (712), the extending directions of the first slide rail (711) and the second slide rail (712) are perpendicular; the straight elastic member is arranged on the first slide rail (711) or the second slide rail (712); When the swinging disc (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 as to make the straight elastic member axially deform.

10. The spreader of claim 8, wherein, The linear motion assembly (700) comprises a gear (721) and a rack (722), the gear (721) is connected with the swinging disc (300) and arranged at the swing center of the swinging disc (300), rotates with the swing of the swinging disc (300), the gear (721) is in mesh with the rack (722), when the swinging disc (300) swings and drives the gear (721) to rotate, the gear (721) drives the rack (722) to move along the length direction of the rack (722), and the rack (722) can make the straight elastic member axially deform.

11. The spreader of claim 8, wherein, The linear motion assembly (700) comprises a sliding piece (731), a third slide rail (732) and a swing rod (733), the sliding piece (731) is in sliding cooperation with the third slide rail (732), the two ends of the swing rod (733) are respectively pivotally connected with the sliding piece (731) and the swinging disc (300), when the swinging disc (300) swings and drives the swing rod (733) to swing, the swing rod (733) drives the sliding piece (731) to slide relative to the third slide rail (732), and the sliding piece (731) can make the straight elastic member axially deform.

12. The spreader of claim 7, wherein, The first end of the straight elastic member is connected to a fixed position and pivotally connected with an entity at the fixed position, the second end of the straight elastic member is pivotally connected with the swinging disc (300) or a swing piece swinging synchronously with the swinging disc (300).

13. The spreading device of claim 12, wherein, The straight elastic member is arranged on a plane parallel to the swing plane of the swinging disc (300), the elastic force provided by the straight elastic member is perpendicular to the axial direction of the output shaft of the motor (200).

14. The spreading device according to any one of claims 12-13, characterized in that The spreading device further comprises a support (400), the entity at the fixed position is the support (400), the support (400) has a first side and a second side distributed in opposite directions, the flail plate (300) is arranged on the first side, the motor (200) is arranged on the second side, and an output shaft of the motor (200) is connected with the flail plate (300) through the support (400).

15. The spreading device according to any one of claims 12-14, characterized in that The swinging member comprises a third swinging arm (610) arranged on the output shaft of the motor (200), and a second end of the straight elastic member is rotationally connected with an end of the third swinging arm (610).

16. The spreading device according to any one of claims 12-15, characterized in that The elastic mechanism (500) comprises two straight elastic members, the flail plate (300) is configured to reciprocate on both sides of a set axis (a) around a swinging center thereof, and the two straight elastic members are symmetrically distributed around the swinging center.

17. The spreading device according to any one of claims 12-16, characterized in that When the flail plate (300) is located at the middle position, a length extension direction of the straight elastic member points to the swinging center of the flail plate (300).

18. A spreading system, characterized by The spreading system further comprises a feeding device (112), 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.

19. The spreading system of claim 18, wherein, The spreading system further comprises a feeding device (112), 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.

20. An unmanned device, comprising: The spreading system further comprises a feeding device (112), 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.

Images