A lawn trimming and collecting integrated device

Abstract

The present invention relates to the field of garden tools, and in particular to an integrated lawn trimming and collecting device. The device comprises a main housing, a cutting mechanism, a sensing mechanism, a walking mechanism and a collecting structure. A first motor is arranged on the main housing, and the cutting mechanism is connected to the output shaft of the first motor through a transmission connection structure; the sensing mechanism is evenly distributed on the side wall of the main housing and is configured to act on the transmission connection structure after contacting a building or an obstacle; the walking mechanism is configured to drive the main housing to move; and the collecting structure is configured to collect the trimmed weeds. The present invention is provided with a transmission connection structure and a sensing mechanism. During normal trimming, the transmission connection structure is in a first state, and the cutting mechanism trims the lawn at a preset position inside the main housing; when the device contacts an obstacle, the sensing mechanism controls the transmission connection structure to switch to a second state, so that the cutting mechanism can approach the building or obstacle and effectively trim the lawn next to the building or obstacle.

Description

Technical Field

[0001] The invention relates to the field of garden tools, and in particular to a lawn trimming and collecting integrated device. Background Art

[0002] In the process of greening maintenance of gardens, residential parks, livestock pastures, etc., it is necessary to trim the lawn regularly. Since trimming the lawn is a heavy task, mowing tools are often needed to assist in trimming the lawn, so as to reduce the labor intensity of workers and improve the aesthetics of lawn trimming.

[0003] The mowing tools in the related art mainly include push-type and ride-on type. Push-type mowers are small in size and easy to use, suitable for small and medium-sized lawns, but they need to be pushed manually, and because they are fuel-driven, they are noisy and also cause a large impact on the hand holding the push rod; ride-on mowers can quickly and effectively achieve large-scale mowing operations in a short period of time. Although it is possible to ride on the machine, it is relatively labor-saving, but it is not suitable for small and medium-sized lawns in the park. It is generally used for mowing operations in animal husbandry, and it also requires manual operation. The patent document with the authorization announcement number CN 107347359 B discloses an automatic garden lawn mower that can automatically mow the lawn, but when the device encounters a building or obstacle (such as a wall, a pillar, etc.), it cannot completely mow the grass next to the building or obstacle, and when mowing the wall or a circular obstacle, the mowing is uneven and unsightly.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention proposes an integrated lawn mowing and collecting device to solve the problem that the existing automatic lawn mowing device cannot mow the grass near buildings or obstacles, resulting in low mowing efficiency and poor mowing effect.

[0006] The lawn mowing and collecting integrated device of the present invention adopts the following technical solution: comprising:

[0007] A main housing, wherein the interior of the main housing is hollow and the center of the bottom is open, a first motor is arranged on the main housing, and an output shaft of the first motor extends vertically and extends into the main housing;

[0008] The cutting mechanism is connected to the output shaft of the first motor through a transmission connection structure, and the cutting mechanism at least partially extends out of the main housing so as to be able to cut the lawn; the transmission connection structure has a first state and a second state, when the transmission connection structure is in the first state, the cutting mechanism is in a preset position in the main housing to cut the lawn, and the preset position is close to the center of the main housing, and when the transmission connection structure is in the second state, the cutting mechanism rotates to move toward the side wall of the main housing;

[0009] A plurality of induction mechanisms are provided and evenly distributed on the side wall of the main housing, and the induction mechanisms are configured to act on the transmission connection structure after contacting the building or obstacle, so that the transmission connection structure switches from a first state to a second state, thereby causing the cutting mechanism to approach the building or obstacle and trim the lawn next to the building or obstacle;

[0010] A walking mechanism, disposed on the main housing and configured to drive the main housing to walk;

[0011] The collecting structure is arranged on the main shell and is configured to collect the trimmed weeds.

[0012] Optionally, the transmission connection structure includes a rotating ring gear, a Schmidt coupling and a transmission shaft; the rotating ring gear is in the shape of an elongated ring, is located inside the main housing, is eccentrically rotationally connected to the output shaft of the first motor and the connection point between the two passes through the long axis of the rotating ring gear, the lower end of the transmission shaft is connected to the cutting mechanism, and the upper end of the transmission shaft is connected to the output shaft of the first motor through a Schmidt coupling; a circle of meshing teeth is provided on the inner circumferential wall of the rotating ring gear, and a first mating gear is provided on the transmission shaft, which meshes with the meshing teeth; the induction mechanism is configured to act on the transmission connection structure after contacting a building or obstacle so that the rotating ring gear stops rotating in a posture where one end of the output shaft of the first motor is away from the output shaft and close to the obstacle.

[0013] Optionally, the transmission connection structure also includes a limit assembly, the limit assembly includes a limit ring, the limit ring is rotatably arranged on the transmission shaft, a limit ball is arranged at the end of the limit ring away from the transmission shaft, a first limit groove is arranged on the inner side wall of the rotating gear ring, the limit ball is arranged in the first limit groove and can slide along the first limit groove, an electromagnet is arranged in the first limit groove, the electromagnet is located at the end of the rotating gear ring close to the transmission shaft, and the electromagnet can engage with the limit ball after being energized to prevent the limit ball from sliding in the first limit groove. When the transmission connection structure is in the first state, the electromagnet and the limit ball are attracted.

[0014] Optionally, the sensing mechanism includes a sensing plate, which is arranged on the outside of the side wall of the main shell and can slide radially along the main shell, an elastic member is connected between the sensing plate and the shell, a limit rod is arranged on the side of the sensing plate close to the center of the main shell, the limit rod extends horizontally and points to the rotating ring gear, an induction limit block is arranged on the rotating ring gear, the induction limit block is located on the side of the output shaft of the first motor farther from the rotating ring gear, and the limit rod can stop with the induction limit block after moving inward a preset distance, thereby limiting the rotation of the rotating ring gear.

[0015] Optionally, the outer surface of the sensing plate is an inwardly concave arc surface.

[0016] Optionally, the transmission shaft includes a connecting shaft section and a cutting shaft section, the connecting shaft section is coaxially arranged above the cutting shaft section and can rotate relative to the cutting shaft section, the upper end of the connecting shaft section is connected to the Schmidt coupling, and the lower end of the cutting shaft section is connected to the cutting mechanism;

[0017] The integrated lawn trimming and collecting device also includes a first acceleration mechanism and a second acceleration mechanism. The first acceleration mechanism takes effect when the transmission connection structure is in the first state and accelerates the cutting shaft segment. The second acceleration mechanism takes effect when the transmission connection structure is in the second state and accelerates the cutting shaft segment.

[0018] Optionally, the first acceleration mechanism includes a second mating gear, a third mating gear and a third motor, the third motor is arranged on the rotating gear ring and its output shaft extends vertically, the third mating gear is connected to the output shaft of the third motor, the second mating gear is arranged on the cutting shaft segment and can slide along the axis of the cutting shaft segment, and the second mating gear is engaged with the third mating gear when the transmission connection structure is in the first state.

[0019] Optionally, the second acceleration mechanism includes a planetary gear ring, a planetary wheel, a planetary carrier and a sun wheel, a circular groove is provided on the lower end surface of the connecting shaft segment, and the planetary gear ring is provided in the circular groove; the planetary carrier is rotatably provided on the top end of the cutting shaft segment and is fixedly connected to the limiting ring; specifically, a connecting rod is fixedly provided at one end of the limiting ring, the limiting ball is connected to the end of the connecting rod away from the limiting ring, and the planetary carrier is connected to the connecting rod;

[0020] The planetary gear is rotatably arranged on the planetary carrier and meshed with the planetary gear ring; the sun gear is arranged on the cutting shaft section and can slide along the axis of the cutting shaft section, and when the transmission connection mechanism is in the second state, the sun gear meshes with the planetary gear.

[0021] Optionally, the walking mechanism includes several universal wheels, which are evenly distributed at the bottom of the main shell. A reversing control structure is arranged inside the main shell. The reversing control structure corresponds to the universal wheels one by one and is connected to the corresponding universal wheels to control the reversing of the universal wheels. A second motor is arranged on the universal wheels, and the second motor is used to drive the universal wheels to move.

[0022] Optionally, the collecting structure includes a collecting shell arranged on the top surface of the main shell, a collecting chamber is formed between the collecting shell and the top surface of the main shell, the collecting chamber is connected to the interior of the main shell, a fan is arranged in the collecting chamber, and the fan is used to suck the weeds cut by the cutting mechanism into the collecting chamber.

[0023] The beneficial effects of the present invention are as follows: the lawn mowing and collecting integrated device of the present invention is provided with a transmission connection structure and a sensing mechanism. During normal mowing, the transmission connection structure is in a first state, and the cutting mechanism mows the lawn at a preset position inside the main shell; when the device contacts an obstacle, the sensing mechanism senses and controls the transmission connection structure to switch to a second state, so that the cutting mechanism can approach the building or obstacle, effectively mow the lawn next to the building or obstacle, and has a good mowing effect and high mowing efficiency.

[0024] Furthermore, the outer surface of the sensing plate of the sensing mechanism is an inwardly concave arc surface. When encountering a circular obstacle, the device will rotate around the circumference with the reversing of the universal wheel. At the same time, the rotating ring gear can always point to the center of the obstacle, ensuring the neatness and integrity of the lawn trimmed by the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of a lawn mowing and collecting integrated device of the present invention;

[0027] Figure 2 It is a front view of a lawn mowing and collecting integrated device of the present invention;

[0028] Figure 3 for Figure 2 Middle AA section view;

[0029] Figure 4 It is a schematic diagram of the cooperation between the transmission connection structure and the cutting mechanism in the present invention;

[0030] Figure 5 for Figure 4 A front view of

[0031] Figure 6 for Figure 5 Middle BB section view;

[0032] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0033] Figure 8 for Figure 4 A top view of

[0034] Fig. 9 for Figure 8 Middle CC section view;

[0035] Fig.10 for Fig. 9 Enlarged view of point B in the middle;

[0036] Fig.11 for Figure 4 Exploded view;

[0037] Fig.12 for Fig.11 Enlarged view of center C.

[0038] In the figure:

[0039] 100, main housing; 101, induction plate; 102, first motor; 103, elastic member; 104, limit rod;

[0040] 110, collecting shell; 111, air outlet grille; 113, protection ring; 114, fan;

[0041] 120. Reversing control structure; 121. Second motor; 122. Universal wheel;

[0042] 200, cutting mechanism;

[0043] 300, rotating gear ring; 301, meshing teeth; 302, first limiting groove; 303, inductive limiting block; 304, electromagnet;

[0044] 310, Schmidt coupling;

[0045] 320, transmission shaft; 321, connecting shaft section; 3211, planetary gear ring; 3212, first matching gear; 3213, second limiting groove; 322, cutting shaft section; 3221, sun gear; 3222, sliding guide groove; 3223, second matching gear;

[0046] 330, limit assembly; 331, limit ring; 332, limit ball; 333, planet carrier; 334, planet gear;

[0047] 350. A third motor; 351. A third matching gear. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0049] like Figures 1 to 12 As shown, an integrated lawn trimming and collecting device provided by an embodiment of the present invention can automatically trim the lawn and collect the trimmed weeds, and specifically includes a main shell 100, a cutting mechanism 200, a sensing mechanism, a walking mechanism and a collecting structure.

[0050] The main shell 100 is hollow inside and open at the bottom center. A first motor 102 is arranged on the main shell 100. The output shaft of the first motor 102 extends vertically and extends into the main shell 100. The cutting mechanism 200 is connected to the output shaft of the first motor 102 through a transmission connection structure. The cutting mechanism 200 at least partially extends out of the main shell 100 and can thus trim the lawn. The transmission connection structure has a first state and a second state. When the transmission connection structure is in the first state, the cutting mechanism 200 is in a preset position in the main shell 100 to cut the lawn. The preset position is close to the center of the main shell 100. When the transmission connection structure is in the second state, the cutting mechanism 200 can rotate and move toward the side wall of the main shell 100.

[0051] There are multiple sensing mechanisms evenly distributed on the side wall of the main shell 100. The sensing mechanisms are configured to act on the transmission connection structure after contacting the building or obstacle, so that the transmission connection structure switches from the first state to the second state, thereby making the cutting mechanism 200 approach the building or obstacle to achieve the trimming of the lawn next to the building or obstacle; as a feasible embodiment, in order to facilitate the installation of the sensing mechanism, the main shell 100 adopts a polygonal structure, and each sensing mechanism is correspondingly installed on a surface of the peripheral wall of the main shell 100.

[0052] The walking mechanism is disposed on the main housing 100 and is configured to drive the main housing 100 to walk.

[0053] The collecting structure is disposed on the main housing 100 and is configured to collect the trimmed weeds.

[0054] It is understandable that the cutting parts on the existing fully automatic mowing devices are usually located in a fixed position to mow the lawn. When encountering obstacles, the cutting parts are difficult to reach the lawn beside the building, so that the lawn beside the building cannot be effectively mowed, and finally it needs to be assisted by manual mowing, which has low mowing efficiency and poor mowing effect. The present invention is provided with a transmission connection structure and a sensing mechanism. During normal mowing, the transmission connection structure is in a first state, and the cutting mechanism 200 moves to mow the lawn at a preset position inside the main housing 100; when the device contacts an obstacle, the sensing mechanism senses and controls the transmission connection structure to switch to the second state, so that the cutting mechanism 200 can approach the building or obstacle, effectively mow the lawn beside the building or obstacle, and has a good mowing effect and high mowing efficiency.

[0055] In a further embodiment, in order to facilitate the walking of the control device, the walking mechanism includes a plurality of universal wheels 122, and the plurality of universal wheels 122 are evenly distributed at the bottom of the main housing 100. A reversing control structure 120 is provided inside the main housing 100. The reversing control structure 120 corresponds to the universal wheels 122 one by one and is connected to the corresponding universal wheels 122 to control the reversing of the universal wheels 122. The universal wheels 122 are provided with a second motor 121, and the second motor 121 is used to drive the universal wheels 122 to walk. Among them, the reversing control structure 120 can adopt any reversing structure in the prior art, for example, the reversing control structure 120 includes a reversing motor and a transmission assembly connected to the reversing motor, the transmission assembly is connected to the universal wheels 122, and the transmission assembly can adopt a gear set, which will not be described in detail.

[0056] Preferably, the number of universal wheels 122 is the same as the number of sensing mechanisms of the present invention, and each universal wheel 122 is arranged between two adjacent sensing mechanisms, that is, arranged at a corner of the main shell 100. In the initial state, all the universal wheels 122 are in the same direction, and the movement of the universal wheels 122 drives the device to move to mow the lawn. When the device touches a building or an obstacle, the sensing mechanism acts on the transmission connection structure to change its state, and at the same time the reversing control structure 120 controls the reversal of the universal wheels 122, specifically: the two universal wheels 122 close to the obstacle are rotated in an oblique direction, and the other universal wheels 122 are rotated in a direction parallel to or tangential to the building or obstacle, to ensure that the device can move close to the building or obstacle.

[0057] In a further embodiment, the transmission connection structure includes a rotating ring gear 300, a Schmidt coupling 310, a transmission shaft 320 and a limit assembly 330. The rotating ring gear 300 is in the shape of a long ring (i.e., similar to the shape of a circular runway), and the rotating ring gear 300 is located inside the main housing 100. The rotating ring gear 300 is eccentrically rotatably connected to the output shaft of the first motor 102 and the connection point between the two passes through the long axis of the rotating ring gear 300. The lower end of the transmission shaft 320 is connected to the cutting mechanism 200, and the upper end of the transmission shaft 320 is connected to the output shaft of the first motor 102 through the Schmidt coupling 310; the inner circumferential wall of the rotating ring gear 300 is provided with a circle of meshing teeth 301, and the transmission A first mating gear 3212 is provided on the shaft 320, and the first mating gear 3212 is meshed with the meshing teeth 301; the limiting assembly 330 is configured to keep the first mating gear 3212 meshed with the meshing teeth 301 of the rotating ring gear 300, and to hinder the relative movement of the transmission shaft 320 and the rotating ring gear 300 when the transmission connection structure is in the first state, and to allow the relative movement of the transmission shaft 320 and the rotating ring gear 300 when the transmission connection structure is in the second state; the sensing mechanism is configured to act on the transmission connection structure after contacting a building or an obstacle so that the rotating ring gear 300 stops rotating in a posture where one end of the output shaft of the first motor 102 is away from the output shaft and close to the obstacle.

[0058] In this embodiment, the limit assembly 330 includes a limit ring 331, which is rotatably set on the transmission shaft 320, and a limit ball 332 is set at the end of the limit ring 331 away from the transmission shaft 320. The inner side wall of the rotating ring gear 300 is provided with a first limit groove 302, and the limit ball 332 is set in the first limit groove 302 and can slide along the first limit groove 302. An electromagnet 304 is set in the first limit groove 302, and the electromagnet 304 is located at one end of the rotating ring gear 300 close to the transmission shaft 320. After the electromagnet 304 is energized, it can be attracted by the limit ball 332 to prevent the limit ball 332 from sliding in the first limit groove 302. When the transmission connection structure is in the first state, the electromagnet 304 is attracted by the limit ball 332.

[0059] It should be noted that the Schmidt coupling 310, also called the eccentric coupling, is a new type of coupling with a unique structure and good transmission performance. It uses the crank movement of the chain rod to achieve different transmission of the axis and allows the axis to move and rotate in parallel. The working principle of the Schmidt coupling 310 is to transmit power through the chain rod and the middle disc. The input power is transmitted from the end disc on one side through the chain rod and the middle disc to the disc on the other side. The length of the chain rod determines the movement of the axis, so that the coupling can not only transmit power, but also allow the rotating axis to move in parallel.

[0060] When in use, place the device at a position away from obstacles, start the first motor 102 and the walking mechanism, and the walking mechanism drives the device to move. At this time, the limit ring 331 and the electromagnet 304 are attracted, and the first motor 102 drives the transmission shaft 320 to rotate through the Schmidt coupling 310. The rotating ring gear 300 moves synchronously with the transmission shaft 320 under the action of the first matching gear 3212, and then rotates around the output shaft of the first motor 102. The transmission shaft 320 drives the cutting mechanism 200 to rotate around the output shaft of the first motor 102 to mow the lawn. That is, when the aforementioned transmission connection structure is in the first state, the preset position of the cutting machine is the rotation trajectory around the output shaft of the first motor 102. When the device moves near an obstacle and the sensing mechanism collides with the obstacle, the rotation of the rotating ring gear 300 is restricted, and eventually stops rotating with one end of the output shaft of the first motor 102 away from the obstacle. At this time, the electromagnet 304 is powered off, the limiting ball 332 is disengaged from the electromagnet 304, and the transmission shaft 320 drives the cutting mechanism 200 to roll along the meshing teeth 301 of the rotating ring gear 300, thereby enabling the cutting mechanism 200 to approach the obstacle and effectively trim the lawn next to the obstacle.

[0061] In a further embodiment, the sensing mechanism includes a sensing plate 101, which is arranged on the outer side of the side wall of the main shell 100 and can slide radially along the main shell 100. An elastic member 103 is connected between the sensing plate 101 and the housing to facilitate the resetting of the sensing plate 101. The elastic member 103 is preferably a spring. A limiting rod 104 is arranged on the side of the sensing plate 101 close to the center of the main shell 100. The limiting rod 104 extends horizontally and points to the rotating ring gear 300. An induction limit block 303 is arranged on the rotating ring gear 300. The induction limit block 303 is located on the side of the output shaft of the first motor 102 that is farther from the rotating ring gear 300. After the limiting rod 104 moves inward by a preset distance, it can stop with the induction limit block 303 to limit the rotation of the rotating ring gear 300. Specifically, an axial hole for mounting the output shaft of the first motor 102 is arranged on the top plate of the rotating ring gear 300, and the induction limit block 303 is located on the side of the axial hole that is farther from the rotating ring gear 300. Specifically in this embodiment, refer to Figure 8 and Fig.11, one side of the inductive limit block 303 coincides with the long axis of the rotating gear ring 300, and the first motor 102 drives the rotating gear ring 300 to rotate counterclockwise. When the inductive plate 101 touches the obstacle, the inductive plate 101 moves inwardly to drive the limit rod 104 to move inwardly. At this time, the limit rod 104 can stop with the inductive limit block 303 on the rotating gear ring 300. When the rotating gear ring 300 rotates to the limit rod 104 (at this time, the rotating gear ring 300 is away from the end of the output shaft of the first motor 102 and close to the obstacle), the rotating gear ring 300 stops rotating under the stop of the limit rod 104, and the cutting mechanism 200 rolls along the rotating gear ring 300, and then can approach the obstacle to trim the lawn beside the obstacle; after the device drives away from the obstacle, the inductive plate 101 is reset, the limit of the rotating gear ring 300 is released, and the cutting mechanism 200 returns to the initial position to continue cutting the lawn.

[0062] In a further embodiment, the outer surface of the sensing plate 101 is an inwardly concave arc surface. When the building or obstacle is circular, the two universal wheels 122 close to the obstacle are also rotated in an oblique direction, and the other universal wheels 122 are rotated in a direction parallel to or tangential to the building or obstacle, that is, the universal wheels 122 away from the obstacle are rotated to be parallel to the inner surface of the sensing plate 101. At this time, because the sensing plate 101 is in arc contact with the obstacle, the device will rotate around the circumference. At the same time, because the rotating gear ring 300 can always point to the center of the obstacle, the neatness and integrity of the lawn trimming by the device are ensured. After the device has gone around the obstacle, the universal wheels 122 change direction and move away from the obstacle. In this embodiment, through the arc setting of the sensing plate 101 and the coordination of the universal wheels, the sensing plate 101 directly contacts the obstacle, and can more accurately sense the outer shape trajectory of the obstacle. The device can go around the obstacle more accurately, which is more conducive to the cutting mechanism 200 to cut the lawn on the edge of the obstacle, ensuring the neatness and integrity of the cutting.

[0063] In a further embodiment, the lawn mowing and collecting integrated device of the present invention further includes a first acceleration mechanism and a second acceleration mechanism, the first acceleration mechanism takes effect when the transmission connection structure is in the first state and accelerates the cutting mechanism 200, and the second acceleration mechanism takes effect when the transmission connection structure is in the second state and accelerates the cutting mechanism 200. It can be understood that in order to ensure the coordination of the transmission connection structure and the induction mechanism, the output speed of the first motor 102 is relatively slow, so the first acceleration mechanism and the second acceleration mechanism are used to accelerate the cutting mechanism 200 to ensure that the cutting mechanism 200 can effectively mow the lawn.

[0064] In a further embodiment, in order to facilitate the arrangement of the first acceleration mechanism and the second acceleration mechanism, the transmission shaft 320 includes a connecting shaft section 321 and a cutting shaft section 322, the connecting shaft section 321 is coaxially arranged above the cutting shaft section 322 and can rotate relative to the cutting shaft section 322, the upper end of the connecting shaft section 321 is connected to the Schmidt coupling 310, the lower end of the cutting shaft section 322 is connected to the cutting mechanism 200, and the first acceleration mechanism and the second acceleration mechanism can be transmission-connected with the cutting shaft section 322, thereby accelerating the cutting mechanism 200. It should be noted that a second limiting groove 3213 is arranged on the connecting shaft section 321, the limiting ring 331 is rotatably arranged in the limiting groove, and the first matching gear 3212 is arranged on the connecting shaft section 321.

[0065] The first acceleration mechanism includes a second matching gear 3223, a third matching gear 351 and a third motor 350. The third motor 350 is arranged on the rotating ring gear 300 and its output shaft extends vertically. The third matching gear 351 is connected to the output shaft of the third motor 350. The second matching gear 3223 is arranged on the cutting shaft segment 322 and can slide along the axis of the cutting shaft segment 322. The second matching gear 3223 is meshed with the third matching gear 351 when the transmission connection structure is in the first state, so that the third motor 350 drives the cutting shaft segment 322 to rotate, thereby accelerating the cutting shaft segment 322.

[0066] The second acceleration mechanism includes a planetary gear ring 3211, a planetary gear 334, a planetary carrier 333 and a sun gear 3221. A circular groove is provided on the lower end surface of the connecting shaft section 321, and the planetary gear ring 3211 is provided in the circular groove.

[0067] The planet carrier 333 is rotatably disposed at the top of the cutting shaft segment 322 and fixedly connected to the limiting ring 331; specifically, a connecting rod is fixedly disposed at one end of the limiting ring 331, the limiting ball 332 is connected to the end of the connecting rod away from the limiting ring 331, and the planet carrier 333 is connected to the connecting rod.

[0068] The planetary gear 334 is rotatably disposed on the planetary carrier 333 and meshes with the planetary ring gear 3211;

[0069] The sun gear 3221 is disposed on the cutting shaft segment 322 and can slide along the axis of the cutting shaft segment 322. When the transmission connection mechanism is in the second state, the sun gear 3221 engages with the planetary gear 334, drives the cutting shaft segment 322 to rotate through the planetary transmission, and then accelerates the cutting shaft segment 322.

[0070] Furthermore, in order to facilitate the movement of the second matching gear 3223 and the sun gear 3221 along the axis of the cutting shaft segment 322, in a preferred embodiment of the present invention, a sliding guide groove 3222 extending along the axis direction thereof is provided on the cutting shaft segment 322, and the second matching gear 3223 is relatively fixedly connected to the sun gear 3221 and is slidably disposed in the sliding guide groove 3222;

[0071] An electromagnetic structure is provided between the second mating gear 3223 and the cutting shaft section 322, and the second mating gear 3223 and the sun gear 3221 are controlled to slide up and down by the electromagnetic structure. Specifically, in one embodiment, an elastic reset member is provided between the second mating gear 3223 and the cutting shaft section 322, and the elastic reset member has a tendency to cause the second mating gear 3223 to move upward, thereby causing the second mating gear 3223 to mesh with the third mating gear 351, and the sun gear 3221 and the planetary gear 334 to disengage, and the electromagnetic structure includes an electromagnetic block provided on the cutting shaft section 322, and the electromagnetic block can be attracted with the second mating gear 3223 after being energized, causing the second mating gear 3223 and the sun gear 3221 to move downward, thereby causing the second mating gear 3223 to disengage with the third mating gear 351, and the sun gear 3221 and the planetary gear 334 to mesh. In another embodiment, the electromagnetic structure includes an electromagnetic block arranged on the cutting shaft segment 322, and a permanent magnet is arranged on the second mating gear 3223. The electromagnetic block and the permanent magnet are arranged correspondingly. By changing the current direction of the electromagnetic block, the polarity of the opposite end of the electromagnetic block and the permanent magnet is changed, and then the permanent magnet is attracted or repelled to control the switching of the transmission of the second mating gear 3223 and the sun gear 3221.

[0072] In a further embodiment, the collecting structure includes a collecting shell 110 arranged on the top surface of the main shell 100, a collecting chamber is formed between the collecting shell 110 and the top surface of the main shell 100, the collecting chamber is connected to the interior of the main shell 100, and a fan 114 is arranged in the collecting chamber, and the fan 114 is used to suck the weeds cut by the cutting mechanism 200 into the collecting chamber.

[0073] As a further preferred embodiment, the top plate of the collection shell 110 can be disassembled to facilitate the removal of weeds in the collection chamber. An air outlet grille 111 is provided on the top plate of the collection shell 110 to balance the air pressure inside the collection chamber.

[0074] Furthermore, a protection ring 113 is provided in the collecting chamber, and the first motor 102 is provided in the collecting chamber and is located in the protection ring 113 , so that weeds can be prevented from damaging the first motor 102 .

[0075] An air guide cover is provided inside the collecting chamber, the air guide cover connects the main shell 100 and the collecting chamber, and the fan 114 is installed on the air guide cover.

[0076] In combination with the above embodiments, the working process of the present invention is as follows:

[0077] In the initial state, all the universal wheels 122 are in the same direction, the second matching gear 3223 is lifted up and meshed with the third matching gear 351, the sun gear 3221 is disengaged from the planetary gear 334, the limiting ball 332 is adsorbed and matched with the electromagnet 304 to limit the position of the transmission shaft 320. At this time, the Schmidt coupling 310, the transmission shaft 320, and the limiting mechanism are a whole; turn on the first motor 102, and the first motor 102 drives the cutting mechanism 200 to rotate through the Schmidt coupling 310 and the transmission shaft 320. While the first motor 102 rotates, the third motor 350 rotates to increase the speed of the cutting shaft section 322 of the transmission shaft 320. The speed of the rotating ring gear 300 is driven by the first motor 102. The speed of the first motor 102 is slow, and the speed of the cutting shaft section 322 is high, which ensures effective trimming of the lawn. While trimming, the fan 114 works to adsorb the trimmed weeds into the collection chamber.

[0078] When the device encounters an obstacle, the corresponding induction plate 101 presses against the obstacle and moves inward. At this time, the limit rod 104 moves inward with the induction plate 101 and limits the rotating ring gear 300 to the position of the pressed induction plate 101. At this time, the electromagnet 304 loses power and no longer limits the position of the limit ball 332. The limit ball 332 can rotate along the shape of the rotating ring gear 300; at the same time, the second matching gear 3223 and the sun gear 3221 move downward, the second matching gear 3223 and the third matching gear 351 are disengaged, and the sun gear 3221 is engaged with the planetary gear 334. The planetary mechanism formed is used to accelerate the cutting shaft segment 322 to ensure that the transmission shaft 320, the limit mechanism, and the cutting mechanism 200 have a sufficient rotation speed to trim the lawn when rotating around the rotating ring gear 300. At this time, the rotating ring gear 300 is facing the obstacle, which can ensure effective trimming of the grass near the obstacle.

[0079] When the sensor plate 101 at the corresponding position is pressed, the reversing control structure 120 will control the universal wheels 122 to rotate and reverse. The two universal wheels 122 closest to the pressed sensor plate 101 will rotate obliquely, and the universal wheels 122 farther away will rotate parallel to or tangent to the obstacle, ensuring that the device can move close to the obstacle. When the obstacle is circular, the device will rotate around the circumference, because the rotating gear ring 300 can always rotate toward the center of the circle, ensuring that the device trims the lawn neatly.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lawn mowing and collecting integrated device, characterized in that: include: A main housing, wherein the interior of the main housing is hollow and the center of the bottom is open, a first motor is arranged on the main housing, and an output shaft of the first motor extends vertically and extends into the main housing; The cutting mechanism is connected to the output shaft of the first motor through a transmission connection structure, and the cutting mechanism at least partially extends out of the main housing so as to be able to cut the lawn; the transmission connection structure has a first state and a second state, when the transmission connection structure is in the first state, the cutting mechanism is in a preset position in the main housing to cut the lawn, and the preset position is close to the center of the main housing, and when the transmission connection structure is in the second state, the cutting mechanism rotates to move toward the side wall of the main housing; A plurality of sensing mechanisms are provided and evenly distributed on the side wall of the main housing, and the sensing mechanisms are configured to act on the transmission connection structure after contacting the building or obstacle, so that the transmission connection structure switches from a first state to a second state, thereby causing the cutting mechanism to approach the building or obstacle and trim the lawn next to the building or obstacle; A walking mechanism, disposed on the main housing and configured to drive the main housing to walk; A collecting structure, disposed on the main housing and configured to collect the trimmed weeds; The transmission connection structure includes a rotating gear ring, a Schmidt coupling and a transmission shaft; The rotating gear ring is in the shape of an elongated ring, and is located inside the main housing. The rotating gear ring is eccentrically connected to the output shaft of the first motor, and the connection point between the two passes through the long axis of the rotating gear ring. The lower end of the transmission shaft is connected to the cutting mechanism, and the upper end of the transmission shaft is connected to the output shaft of the first motor through a Schmidt coupling. A circle of meshing teeth is arranged on the inner circumferential wall of the rotating gear ring, and a first matching gear is arranged on the transmission shaft, and the first matching gear meshes with the meshing teeth. The sensing mechanism is configured to act on the transmission connection structure after contacting a building or an obstacle, so that the rotating gear ring stops rotating in a posture where one end of the output shaft of the first motor is away from the output shaft and close to the obstacle. The transmission connection structure also includes a limit assembly, which includes a limit ring, which is rotatably arranged on the transmission shaft, a limit ball is arranged at one end of the limit ring away from the transmission shaft, a first limit groove is arranged on the inner side wall of the rotating gear ring, the limit ball is arranged in the first limit groove and can slide along the first limit groove, an electromagnet is arranged in the first limit groove, the electromagnet is located at one end of the rotating gear ring close to the transmission shaft, and the electromagnet can be attracted with the limit ball to prevent the limit ball from sliding in the first limit groove after being energized, and the electromagnet is attracted with the limit ball when the transmission connection structure is in the first state; The sensing mechanism includes a sensing plate, which is arranged on the outside of the side wall of the main shell and can slide radially along the main shell. An elastic member is connected between the sensing plate and the shell. A limit rod is arranged on the side of the sensing plate close to the center of the main shell. The limit rod extends horizontally and points to the rotating ring gear. An induction limit block is arranged on the rotating ring gear. The induction limit block is located on the side of the output shaft of the first motor that is farther from the rotating ring gear. After the limit rod moves inward by a preset distance, it can stop with the induction limit block to limit the rotation of the rotating ring gear.

2. The lawn mowing and collecting integrated device according to claim 1, characterized in that: The outer surface of the induction plate is an inwardly concave arc surface.

3. The lawn mowing and collecting integrated device according to claim 1, characterized in that: The transmission shaft includes a connecting shaft section and a cutting shaft section, wherein the connecting shaft section is coaxially arranged above the cutting shaft section and can rotate relative to the cutting shaft section, the upper end of the connecting shaft section is connected to the Schmidt coupling, and the lower end of the cutting shaft section is connected to the cutting mechanism; The integrated lawn trimming and collecting device also includes a first acceleration mechanism and a second acceleration mechanism. The first acceleration mechanism takes effect when the transmission connection structure is in the first state and accelerates the cutting shaft segment. The second acceleration mechanism takes effect when the transmission connection structure is in the second state and accelerates the cutting shaft segment.

4. The lawn mowing and collecting integrated device according to claim 3, characterized in that: The first acceleration mechanism includes a second mating gear, a third mating gear and a third motor. The third motor is arranged on the rotating gear ring and its output shaft extends vertically. The third mating gear is connected to the output shaft of the third motor. The second mating gear is arranged on the cutting shaft section and can slide along the axis of the cutting shaft section. The second mating gear is meshed with the third mating gear when the transmission connection structure is in the first state.

5. The lawn mowing and collecting integrated device according to claim 3, characterized in that: The second acceleration mechanism includes a planetary gear ring, a planetary wheel, a planetary carrier and a sun wheel. A circular groove is provided on the lower end surface of the connecting shaft segment, and the planetary gear ring is provided in the circular groove. The planetary carrier is rotatably provided at the top end of the cutting shaft segment and is fixedly connected to the limiting ring. Specifically, a connecting rod is fixedly provided at one end of the limiting ring, a limiting ball is connected to an end of the connecting rod away from the limiting ring, and the planetary carrier is connected to the connecting rod. The planetary gear is rotatably arranged on the planetary carrier and meshed with the planetary gear ring; the sun gear is arranged on the cutting shaft section and can slide along the axis of the cutting shaft section, and when the transmission connection mechanism is in the second state, the sun gear meshes with the planetary gear.

6. The lawn mowing and collecting integrated device according to claim 1, characterized in that: The walking mechanism includes a plurality of universal wheels, which are evenly distributed at the bottom of the main shell. A reversing control structure is arranged inside the main shell. The reversing control structure corresponds to the universal wheels one by one and is connected to the corresponding universal wheels to control the reversing of the universal wheels. A second motor is arranged on the universal wheels, and the second motor is used to drive the universal wheels to walk.

7. The lawn mowing and collecting integrated device according to claim 1, characterized in that: The collecting structure includes a collecting shell arranged on the top surface of the main shell, a collecting chamber is formed between the collecting shell and the top surface of the main shell, the collecting chamber is connected with the interior of the main shell, a fan is arranged in the collecting chamber, and the fan is used to suck the weeds cut by the cutting mechanism into the collecting chamber.

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