Smart mower

Abstract

The present disclosure provides a kind of intelligent mower, wherein the cutting device includes: cutterhead, for rotatably mounted on machine body;Cutting piece, is arranged on cutterhead, to rotate with cutterhead;Shielding disc, located at the side of cutterhead away from machine body;Shielding disc and cutterhead can be relatively rotated, the orthographic projection of shielding disc on cutterhead is at least partially located in cutterhead, and the orthographic projection of shielding disc on cutterhead is located in the inside of the orthographic projection of cutting piece on cutterhead.The intelligent mower provided by the present disclosure sets shielding disc on the side of cutterhead away from machine body, shielding disc can separate cutterhead and lawn, thereby reduce the frictional resistance of lawn to cutterhead and the energy loss caused thereby, further reduce cutting load and cutting energy consumption, improve cutting efficiency;On the other hand, shielding disc can keep away grass clippings from the side away from cutterhead, avoid grass clippings to invade the inside of shielding disc and be accumulated between cutterhead and cutting piece, improve the ability of grass cutting.

Description

[0001] This application claims priority to Chinese patent application No. CN202421556530.X, filed on July 3, 2024, the entire contents of which are incorporated herein by reference.

[0002] This application claims priority to Chinese patent application No. CN202422667883.3, filed on November 1, 2024, the entire contents of which are incorporated herein by reference.

[0003] This application claims priority to Chinese patent application No. CN202422667994.4, filed on November 1, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0004] This disclosure relates to the field of garden tools technology, and in particular to an intelligent lawnmower. Background Technology

[0005] A smart lawnmower is a tool used for trimming lawns, vegetation, etc. The bottom of the smart lawnmower is equipped with a cutting device, which includes a blade disc and cutting blades. The cutting blades are located on the outer periphery of the blade disc. The cutting blades are usually blades. The blade disc is connected to the drive shaft of the motor. The drive shaft rotates at high speed, which drives the blade disc and blades to rotate, thereby cutting and trimming the lawn.

[0006] However, existing smart lawnmowers suffer from problems such as high energy consumption and poor cutting ability due to the lawn hindering the operation of the cutting device, especially in dense grass environments. Utility Model Content

[0007] In view of this, the purpose of this disclosure is to propose an intelligent lawnmower to reduce cutting energy consumption and improve cutting ability.

[0008] To achieve one of the above objectives, this disclosure provides a cutting apparatus, comprising:

[0009] body;

[0010] A mobile device is mounted on the machine body to support and drive the machine body to move within the working area;

[0011] The drive unit is mounted on the machine body;

[0012] A cutting device is located at the bottom of the machine body, and the cutting device rotates around its own axis under the drive of the driving device.

[0013] A control device, mounted on the machine body, is signal-connected to the moving device and the cutting device to control the automatic movement and automatic operation of the intelligent lawnmower;

[0014] The cutting device includes:

[0015] The cutter head is rotatably mounted on the machine body;

[0016] A cutting component is disposed on the cutter head to rotate with the cutter head;

[0017] A protective disc is located on the side of the cutter head away from the machine body;

[0018] The protective disc and the cutting disc are rotatable relative to each other. The orthographic projection of the protective disc on the cutting disc is at least partially located inside the cutting disc, and the orthographic projection of the protective disc on the cutting disc is located inside the orthographic projection of the cutting element on the cutting disc.

[0019] The cutting device further includes:

[0020] The first connecting sleeve is fixedly connected to the cutter head and is located on the side of the cutter head closer to the protective disc;

[0021] The second connecting sleeve is fixedly connected to the protective disc and is located on the side of the protective disc closer to the cutter head;

[0022] A bearing assembly is disposed between the first connecting sleeve and the second connecting sleeve. Further, the cutting element includes a cutting portion and a fixing portion, the fixing portion being connected to the cutter head, the cutting portion extending outward from the cutter head, and the orthographic projection of the protective disc on the cutter head at least partially overlapping the orthographic projection of the fixing portion on the cutter head.

[0023] Furthermore, the cutting device includes at least two sets of cutting elements for forming different cutting heights, wherein the cutting height of each set of cutting elements is the same; the cutter disc is uniformly provided with a plurality of cutting elements along the circumference, and each pair of adjacent cutting elements is located on opposite sides of the cutter disc.

[0024] Furthermore, the cutter head includes a cutter head body and a receiving cavity, the receiving cavity being formed by the cutter head body recessed in a direction away from the protective disc, and the first connecting sleeve being at least partially located in the receiving cavity.

[0025] Furthermore, the first connecting sleeve includes a first body portion and a protrusion portion, the protrusion portion being disposed on the side of the first body portion near the protective disc, the protrusion portion being at least partially located inside the second connecting sleeve, and the bearing assembly being sleeved on the protrusion portion.

[0026] Furthermore, the bearing assembly includes a first bearing, a second bearing, and a bearing washer arranged coaxially, with the bearing washer located between the first bearing and the second bearing;

[0027] The second connecting sleeve includes a second body portion, in which a first mounting groove, a second mounting groove, and an annular platform are provided. The first mounting groove is located on the side of the second mounting groove away from the protective disc, and the annular platform is located between the first mounting groove and the second mounting groove.

[0028] The first bearing is installed in the first mounting groove, the second bearing is installed in the second mounting groove, and the bearing washer is located inside the ring platform.

[0029] Furthermore, the cutting device also includes a first connecting screw, a second connecting screw, and a bearing fixing screw. The first connecting sleeve is fixedly connected to the cutter head by the first connecting screw, and the second connecting sleeve is fixedly connected to the protective disc by the second connecting screw. The bearing assembly is installed inside the second connecting sleeve, and the bearing fixing screw passes through the bearing assembly and is fixedly connected to the first connecting sleeve.

[0030] Furthermore, the outer peripheral edge of the protective disc is at least partially raised towards the side where the cutter head is located.

[0031] Furthermore, the first connecting sleeve includes a first body portion and an extension portion extending from the first body portion toward the protective disc; the second connecting sleeve includes a second body portion and a protruding portion protruding from the second body portion toward the cutter disc; on the projection plane along the radial direction of the cutter disc, the projection of the protruding portion and the projection of the extension portion at least partially overlap.

[0032] Furthermore, on the projection plane along the radial direction of the cutter head, the length of the overlap between the projection of the protrusion and the projection of the extension is greater than the shortest distance between the first body and the second body.

[0033] Furthermore, one of the first connecting sleeve and the second connecting sleeve has a protrusion, and the other of the first connecting sleeve and the second connecting sleeve has a receiving groove for accommodating at least a portion of the protrusion.

[0034] Furthermore, a sealing structure is provided between the first connecting sleeve and the second connecting sleeve to prevent liquid or solid foreign objects from entering the bearing assembly.

[0035] In the intelligent lawnmower disclosed herein, a protective disc is installed on the side of the blade disc away from the machine body, and the protective disc and the blade disc can rotate relative to each other through a bearing assembly. On the one hand, the protective disc can isolate the blade disc from the lawn, thereby reducing the frictional resistance of the lawn to the blade disc and the resulting energy loss, thus reducing the cutting load and cutting energy consumption, and improving cutting efficiency. On the other hand, the protective disc can block grass clippings on the side away from the blade disc, preventing grass clippings from entering the inner side of the protective disc and accumulating between the blade disc and the cutting element, thereby improving the ability to cut dense grass. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a structural diagram of a smart lawnmower in related technologies;

[0038] Figure 2 for Figure 1 A schematic diagram of the AA cross-section;

[0039] Figure 3 This is a schematic diagram of the structure of a cutting device according to some embodiments of the present disclosure applied in a smart lawnmower;

[0040] Figure 4 This is a schematic diagram of the structure of a cutting device according to some embodiments of the present disclosure;

[0041] Figure 5 This is a bottom view of a cutting apparatus according to some embodiments of the present disclosure;

[0042] Figure 6 This is a schematic diagram of a partial structure of a cutting device according to some embodiments of the present disclosure;

[0043] Figure 7 This is an exploded view of a portion of the structure in the cutting apparatus of some embodiments of this disclosure;

[0044] Figure 8 This is a schematic diagram of the cutting apparatus of some embodiments of this disclosure in operation;

[0045] Figure 9 This is a schematic diagram of the structure of the protective disc in the cutting apparatus of some embodiments of this disclosure;

[0046] Figure 10 This is a schematic diagram of the structure of an intelligent lawnmower according to some embodiments of the present disclosure;

[0047] Figure 11 This is a schematic diagram of the structure of an intelligent lawnmower according to some embodiments of the present disclosure;

[0048] Figure 12 This is a cross-sectional schematic diagram of a portion of the structure of an intelligent lawnmower according to some embodiments of this disclosure;

[0049] Figure 13 This is a cross-sectional schematic diagram of a portion of the structure of an intelligent lawnmower according to some embodiments of this disclosure.

[0050] Figure 14 This is a cross-sectional schematic diagram of a portion of the structure of an intelligent lawnmower according to some embodiments of this disclosure.

[0051] The symbols in the attached image are explained as follows:

[0052] 100. Intelligent lawnmower;

[0053] 10. Cutting device; 11. Cutter head; 110. Receiving cavity; 111. Cutter head body; 112. Fastening screw; 12. Cutting component; 121. Cutting part; 122. Fixing part; 13. Protective plate; 131. Operating hole; 132. Recessed part; 14. First connecting sleeve; 140. First body part; 141. Protrusion; 142. Extension part; 143. Receiving groove; 15. Second connecting sleeve; 150. Second body part; 151. 152. Second mounting groove; 153. Ring platform; 154. Protrusion; 155. Raised portion; 156. Third mounting groove; 157. Sealing portion; 16. Bearing assembly; 161. First bearing; 162. Second bearing; 163. Bearing washer; 164. Seal; 165. Third bearing; 166. Waterproof structure; 17. Bearing fixing screw; 171. Washer; 18. First connecting screw; 19. Second connecting screw;

[0054] 20. Fuselage; 30. Drive unit;

[0055] 40. Mobile device; 41. Drive wheel;

[0056] 50. Control device. Detailed Implementation

[0057] To make the above-described objects, features, and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this disclosure. However, this disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this disclosure. Therefore, this disclosure is not limited to the specific embodiments disclosed below.

[0058] In the description of this disclosure, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0059] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0061] In this disclosure, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this disclosure are for illustrative purposes only and do not represent the only possible implementation.

[0063] like Figure 1 , Figure 2 As shown, in related technologies, an intelligent lawnmower 100 includes a body 20, a cutting device 10, and a drive device 30. The cutting device 10 and the drive device 30 are mounted on the body 20. The drive device 30 is connected to the cutting device 10 and drives the cutting device 10 to perform cutting operations. The cutting device 10 includes a blade disc 11 and a cutting element 12. The cutting element 12 is disposed on the outer peripheral edge of the blade disc 11. The drive device 30 drives the blade disc 11 and the cutting element 12 to rotate.

[0064] Through long-term research, the inventors discovered that during the operation of the intelligent lawnmower 100, the bottom surface of the blade disc 11 directly contacts the lawn. Dense grass generates significant frictional resistance on the high-speed rotating blade disc 11, increasing the load on the blade disc 11 and potentially causing it to stall and stop. Furthermore, grass clippings generated during cutting easily enter the cutting device 10 and accumulate between the blade disc 11 and the cutting element 12, further increasing the cutting load and causing the rotation of the blade disc 11 and the cutting element 12 to stop, resulting in jamming and difficulty in starting the drive device 30. Therefore, the existing intelligent lawnmower 100 has poor dense grass cutting ability and high cutting energy consumption. In addition, the fastening screws 112 on the blade disc 11 are prone to wear and loosening after colliding with fixed obstacles on the lawn, such as stones, causing the cutting element 12 to detach from the blade disc 11, posing a certain safety hazard.

[0065] Based on this, the present disclosure provides an intelligent lawnmower 100 to solve the aforementioned technical problems. The intelligent lawnmower 100 can be a ride-on lawnmower, a stand-up lawnmower, a push lawnmower, or any other type of intelligent lawnmower capable of automatically moving within the work area and performing automatic cutting operations. Changes in the form of the intelligent lawnmower 100 do not substantially affect the structure and function of this disclosure.

[0066] like Figure 10 and Figure 11As shown, the intelligent lawnmower 100 includes a body 20, a cutting device 10, and a drive device 30. The cutting device 10 and the drive device 30 are mounted on the body 20. The drive device 30 is connected to the cutting device 10 and drives the cutting device 10 to perform cutting operations. The intelligent lawnmower 100 provided in this embodiment has a protective disc 13 on the side of the blade disc 11 away from the body 20, allowing the protective disc 13 to rotate relative to the blade disc 11. When the cutting device 10 is running, the blade disc 11 rotates at high speed, and the protective disc 13 separates the blade disc 11 from the lawn, preventing large-area contact between the lawn and the bottom surface of the blade disc 11, reducing frictional resistance and the resulting energy loss, thereby reducing the cutting load and cutting energy consumption, and improving cutting efficiency. On the other hand, the protective disc 13 can block grass clippings on the side away from the blade disc 11, preventing grass clippings from entering the inner side of the protective disc 13 and accumulating between the blade disc 11 and the cutting element 12, thus improving the ability to cut dense grass.

[0067] The intelligent lawnmower 100 includes a moving device 40 mounted on the body 20, used to support and move the body 20 within a working area according to received drive commands to complete the operation. The moving device 40 includes drive wheels 41, which typically include rollers and a motor for driving the rollers to rotate. Two sets of drive wheels 41 may be provided, with the two sets of drive wheels 41 positioned on opposite sides of the body 20. In this embodiment, the two sets of drive wheels 41 are located at the rear end of the body 20 as rear wheels. Two steering wheels (not shown) are provided at the front end of the body 20, and the two steering wheels are positioned opposite each other on opposite sides of the body 20. The steering wheels are used to achieve steering of the body 20, and the drive wheels 41 are used to drive the movement of the body 20. In other embodiments, the two sets of drive wheels 41 may be used as front wheels and located at the front end of the body 20, or the lawnmower may include four sets of drive wheels 41, with two sets of drive wheels 41 used as front wheels located at the front end of the body 20, and the other two sets of drive wheels 41 used as rear wheels located at the rear end of the body 20, so that the body 20 can be moved by the movement of the four sets of drive wheels 41.

[0068] The intelligent lawnmower 100 may also include an energy module (not shown) for providing energy for various operations of the intelligent lawnmower 100. The energy module may include a rechargeable battery and a charging connection structure, wherein the charging connection structure is typically a charging electrode plate that can be used in conjunction with a charging electrode plate provided at a docking station to charge the intelligent lawnmower 100.

[0069] The intelligent lawnmower 100 also includes a control device 50 installed on the body 20. The control device 50 is connected to the moving device 40 and the cutting device 10 by signal to control the automatic movement and automatic operation of the intelligent lawnmower 100. Its functions include controlling the cutting device 10 to start or stop, generating a movement path and controlling the moving device 40 to move according to the path, judging the power of the energy module and controlling the intelligent lawnmower 100 to return to the docking station for automatic charging, etc.

[0070] To enable the intelligent lawnmower 100 to move and cut grass autonomously without user intervention, thus improving the user experience, the intelligent lawnmower 100 also includes a positioning device (not shown) mounted on the body 20. This device acquires the lawnmower's own position coordinates, allowing it to navigate automatically along a preset path. The positioning device includes a locator for receiving satellite signals and / or base station signals and outputting positioning data. A control device 50, partially located within the body 20, is used to acquire the location data of the self-moving device based on the positioning data output by the positioning device (locator). The positioning device can be offset or centrally mounted on the body 20. Optionally, the positioning device can also be detachably connected to the body 20. On the other hand, positioning devices can obtain the coordinate information of their location through absolute or relative positioning. Accordingly, positioning devices can include visual sensors (such as monocular cameras, multi-view cameras, depth cameras, etc.), image sensors, satellite positioning sensors, etc. Accordingly, positioning devices can use one or more of the following positioning technologies to obtain the coordinate information of their location: GPS technology, vision-based simultaneous localization and mapping (VSLAM) technology, real-time kinematic (RTK) positioning technology, etc.

[0071] like Figure 3 , Figure 4 As shown, in some embodiments, the cutting device 10 provided in this disclosure includes a cutter head 11, a cutting element 12, and a protective disc 13. The cutter head 11 is mounted on the machine body 20 during use and can rotate around its own axis. The cutting element 12 is mounted on the cutter head 11 to rotate with the cutter head 11. The protective disc 13 is located on the side of the cutter head 11 away from the machine body 20, and there is a gap between the protective disc 13 and the cutter head 11.

[0072] The protective disc 13 and the cutter disc 11 are rotatable relative to each other. The orthographic projection of the protective disc 13 on the cutter disc 11 is at least partially located inside the cutter disc 11. Moreover, the orthographic projection of the protective disc 13 on the cutter disc 11 is located inside the orthographic projection of the cutting member 12 on the cutter disc 11. The inside refers to the side of the cutting member 12 near the center of the cutter disc 11. That is, the coverage area of ​​the orthographic projection of the protective disc 13 on the cutter disc 11 will not extend outward beyond the coverage area of ​​the orthographic projection of the cutting member 12 on the cutter disc 11. The coverage area of ​​the orthographic projection of the cutting member 12 on the cutter disc 11 corresponds to the cutting range of the cutting member 12.

[0073] Wherein, the orthographic projection of the protective disc 13 on the cutter head 11 is at least partially located inside the cutter head 11, meaning that the orthographic projection of the protective disc 13 on the cutter head 11 can be entirely located inside the cutter head 11, or a portion of the orthographic projection of the protective disc 13 on the cutter head 11 is located inside the cutter head 11 and another portion is located outside the cutter head 11, wherein the portion of the protective disc 13 extending outward beyond the cutter head 11 will not exceed the cutting range of the cutting element 12, so as to avoid affecting the cutting action of the cutting element 12.

[0074] The cutting device 10 also includes a first connecting sleeve 14, a second connecting sleeve 15, and a bearing assembly 16. The first connecting sleeve 14 is fixedly connected to the cutter disc 11 and is located on the side of the cutter disc 11 near the protective disc 13. The second connecting sleeve 15 is fixedly connected to the protective disc 13 and is located on the side of the protective disc 13 near the cutter disc 11. The bearing assembly 16 is disposed between the first connecting sleeve 14 and the second connecting sleeve 15.

[0075] The cutting device 10 provided in this disclosure, by providing a protective disc 13 on the side of the cutter head 11 away from the machine body 20, and by using a first connecting sleeve 14, a second connecting sleeve 15, and a bearing assembly 16, allows the protective disc 13 and the cutter head 11 to rotate relative to each other; that is, the protective disc 13 and the cutter head 11 do not rotate together. Figure 8 As shown, when the cutting device 10 is running, the cutter head 11 rotates at high speed, and the protective disc 13 contacts the dense grass lawn. The protective disc 13 can remain stationary or rotate slowly. On the one hand, due to the obstruction of the protective disc 13, the cutter head 11 does not contact the lawn or has little contact with it, thereby reducing the frictional resistance of the lawn to the cutter head 11 and the resulting energy loss, thus reducing the cutting load and cutting energy consumption and improving cutting efficiency. On the other hand, the protective disc 13 can block grass clippings on the side away from the cutter head 11, preventing grass clippings from intruding into the inner side of the protective disc 13 and accumulating between the cutter head 11 and the cutting element 12, thereby improving the cutting ability of dense grass.

[0076] like Figure 4As shown, in some embodiments, the cutting element 12 includes a cutting portion 121 and a fixing portion 122. The fixing portion 122 is connected to the cutter head 11, and the cutting portion 121 extends outward from the cutter head 11. The orthographic projection of the protective disc 13 on the cutter head 11 at least partially overlaps with the orthographic projection of the fixing portion 122 on the cutter head 11. The coverage area of ​​the protective disc 13 corresponds to part or all of the cutter head 11 and the fixing portion 122. The protective disc 13 protects the cutter head 11 and the fixing portion 122, and does not exceed the cutting range of the cutting portion 121, thus not affecting the cutting action of the cutting portion 121. Specifically, the fixing portion 122 of the cutting element 12 is fixedly installed on the outer peripheral edge of the cutter head 11 by fastening screws 112. The protective disc 13 blocks hard objects such as stones, preventing the fastening screws 112 on the fixing portion 122 from being worn loose by hard objects, thus reducing the probability of the cutting element 12 falling off the cutter head 11 and improving safety performance.

[0077] In this embodiment, the outer diameter of the protective disc 13 is the same as that of the cutter head 11, thereby providing sufficient safety protection for the cutter head 11 and each fixing part 122. In other embodiments, the outer diameter of the protective disc may be different from that of the cutter head; the outer diameter of the protective disc may be slightly smaller or slightly larger than that of the cutter head.

[0078] In some embodiments, the cutting element 12 can be a metal or non-metal component such as a blade or metal wire, which can be selected according to the specific application scenario. Optionally, the cutting element 12 is a blade. Each blade is independently of a regular or irregular shape, which can be circular, rectangular, or other shapes. Optionally, the blade is a straight blade, and the blade includes a double cutting edge.

[0079] like Figure 3 , Figure 4 As shown, in some embodiments, the cutting device 10 includes at least two sets of cutting elements 12 for forming different cutting heights. Each set of cutting elements 12 has the same cutting height, meaning each set of cutting elements 12 is located in the same plane, which is parallel to the cutter head 11. The number of cutting elements 12 in each set can be at least two. Furthermore, the cutting elements 12 in each set are evenly spaced around the central axis of the cutter head 11.

[0080] In this embodiment, a set of cutting elements 12 is provided on each of the opposite sides of the cutter head 11, and the number of cutting elements 12 in each set can be selected as three. In use, the axis of the cutter head 11 is located in the vertical direction. The cutting position of the cutting element 12 on the side of the cutter head 11 away from the protective plate 13 is higher than the cutting position of the cutting element 12 on the other side, thus forming two different cutting heights.

[0081] In other embodiments, two sets of cutting elements 12 with different heights may be provided on the same side of the cutter head 11. Alternatively, cutting elements 12 for forming two or more cutting heights may be provided on both sides or one side of the cutter head 11.

[0082] like Figure 4 , Figure 5 As shown, in some embodiments, a plurality of cutting elements 12 are uniformly arranged circumferentially on the cutter head 11, with each pair of adjacent cutting elements 12 located on opposite sides of the cutter head 11. Two sets of cutting elements 12 with different cutting heights are formed on both sides of the cutter head 11. The uniform arrangement of the cutting elements 12 around the cutter head 11 balances the cutting capacity and load of the cutting device 10, achieving higher cutting efficiency. Furthermore, the cutting elements 12 on both sides of the cutter head 11 automatically form different cutting heights, making the axial layout of the cutting device 10 more rational.

[0083] In this embodiment, the cutter head 11 is evenly provided with six cutting elements 12 along its circumference. The six cutting elements 12 are divided into two groups according to their different cutting heights. In each group, the three cutting elements 12 have the same cutting height. The two groups of cutting elements 12 are alternately distributed and arranged on both sides of the cutter head 11. In other embodiments, the number of cutting elements 12 can also be four, eight, nine, etc., or the cutting elements 12 can be divided into three or four groups, etc., according to actual needs.

[0084] like Figure 4 As shown, in some embodiments, the cutter head 11 includes a cutter head body 111 and a receiving cavity 110. The receiving cavity 110 is formed by the cutter head body 111 being recessed in a direction away from the protective disc 13, and the first connecting sleeve 14 is at least partially located in the receiving cavity 110. The fact that a portion of the structure of the first connecting sleeve 14 is located in the receiving cavity 110 of the cutter head body 111 makes the axial layout of the cutting device 10 reasonable and compact.

[0085] In other embodiments, the second connecting sleeve 15 may also be partially located in the receiving cavity 110, so as to minimize the axial dimension of the cutting device 10 while ensuring that a gap is maintained between the protective disc 13 and the cutter disc 11.

[0086] like Figure 7 As shown, in some embodiments, the first connecting sleeve 14 includes a first body portion 140 and a protrusion 141. The protrusion 141 is located on the side of the first body portion 140 near the protective disc 13. The protrusion 141 is at least partially located inside the second connecting sleeve 15, and the bearing assembly 16 is sleeved on the protrusion 141. Specifically, along the axial direction of the cutter head 11, the bearing assembly 16 is located between the first body portion 140 and the second connecting sleeve 15; along the radial direction of the cutter head 11, the bearing assembly 16 is located between the protrusion 141 and the second connecting sleeve 15, thereby ensuring a reasonable and compact layout of the cutting device 10 in both the axial and circumferential directions.

[0087] like Figure 6 , Figure 7 As shown, in some embodiments, the bearing assembly 16 includes a first bearing 161, a second bearing 162, and a bearing washer 163 coaxially arranged, with the bearing washer 163 located between the first bearing 161 and the second bearing 162. That is, the bearing assembly 16 is a double bearing structure. The second connecting sleeve 15 includes a second body portion 150, within which a first mounting groove 151, a second mounting groove 152, and an annular platform 153 are provided. The first mounting groove 151 is located on the side of the second mounting groove 152 away from the protective disc 13. The first bearing 161 is installed in the first mounting groove 151, the second bearing 162 is installed in the second mounting groove 152, and the bearing washer 163 is located inside the annular platform 153. Specifically, the bearing washer 163 is located between the inner ring of the first bearing 161 and the inner ring of the second bearing 162. The annular platform 153 is an annular boss protruding towards the center from the second body portion 150, separating the outer ring of the first bearing 161 from the outer ring of the second bearing 162. The inner rings of the first bearing 161 and the second bearing 162 are mounted on the protrusion 141 of the first connecting sleeve 140 by means of interference fit or other means, so that the cutter head 11 drives the inner rings of the first bearing 161 and the second bearing 162 to rotate synchronously. The outer rings of the first bearing 161 and the second bearing 162 are connected to the second connecting sleeve 15, so that the protective disc 13 can rotate freely, but will not rotate synchronously with the cutter head 11.

[0088] like Figure 14 As shown, in some embodiments, the bearing assembly 16 includes a third bearing 165, and the bearing assembly 16 is a single bearing structure. The height of the third bearing 165 is greater than the height of the first bearing 161 (second bearing 162), but the height of the third bearing 165 is less than the sum of the heights of the first bearing 161 and the second bearing 162. A third mounting groove 156 is provided in the second body 150, and the third bearing 165 is mounted in the third mounting groove 156. Similarly, the inner ring of the third bearing 165 is mounted on the protrusion 141 of the first connecting sleeve 140 by means of interference fit or the like, and the outer ring of the third bearing 165 is connected to the second body portion 150 of the second connecting sleeve 15. The protective disc 13 can rotate freely without rotating synchronously with the cutter disc 11. In this embodiment, the use of a single bearing structure can reduce the overall height of the cutting device 10, save space, and thus ensure that the miniaturization requirements of the intelligent lawnmower 100 are met.

[0089] like Figure 4As shown, in some embodiments, the cutting device 10 further includes a first connecting screw 18, a second connecting screw 19, and a bearing fixing screw 17. The first connecting sleeve 14 is fixedly connected to the cutter head 11 by the first connecting screw 18, and the second connecting sleeve 15 is fixedly connected to the protective disc 13 by the second connecting screw 19. The bearing assembly 16 is installed inside the second connecting sleeve 15, and the bearing fixing screw 17 passes through the bearing assembly 16 and is fixedly connected to the first connecting sleeve 14. There are three first connecting screws 18 and three second connecting screws 19. The three first connecting screws 18 are evenly distributed around the center of the cutter head 11, and the three second connecting screws 19 are evenly distributed around the center of the protective disc 13. On the side of the protective disc 13 away from the cutter head 11, the second connecting screws 19 do not protrude from the protective disc 13, thereby preventing them from being loosened by wear from hard objects.

[0090] The assembly process of the cutting device 10 disclosed herein may include the following steps:

[0091] The first connecting sleeve 14 is fixedly connected to the cutter head 11 by the first connecting screw 18;

[0092] Press the first bearing 161, the second bearing 162 and the bearing washer 163 into the second connecting sleeve 15 respectively;

[0093] The bearing fixing screw 17 passes through the bearing assembly 16 and is fixedly connected to the protrusion 141 of the first connecting sleeve 14.

[0094] The protective disc 13 and the second connecting sleeve 15 are fixedly connected by the second connecting screw 19.

[0095] like Figure 9 As shown, optionally, in some embodiments, the protective disc 13 includes an operation hole 131, which corresponds to the fixing part 122 on the side of the cutter head 11 near the protective disc 13. That is, the orthographic projection of the fixing part 122 on the side (lower side) of the cutter head 11 near the protective disc 13 on the protective disc 13 can overlap with the operation hole 131. With this configuration, when it is necessary to replace a set of cutting parts 12 located on the lower side of the cutter head 11, the tool can be passed through the operation hole 131 to disassemble or install the fastening screws 112 on the fixing part 122 without disassembling the protective disc 13, thus simplifying the replacement and disassembly operation of the cutting parts 12.

[0096] Optionally, the protective disc 13 includes a recess 132, which is formed by the protective disc 13 being recessed in a direction away from the cutter head 11. A portion of the bearing fixing screw 17 is received in the recess 132, and a portion of the second connecting sleeve 15 is also received in the recess 132. Furthermore, in some other embodiments, the protective disc 13 may not include the recess 132, and may have a flat structure (e.g., Figure 5 It includes several fixing screw holes.

[0097] Optionally, in some embodiments, the outer peripheral edge of the protective disc 13 may be curved toward the side (upper side) where the blade disc 11 is located to increase the mobility of the smart lawnmower 100 and enhance the structural strength of the protective disc 13. In addition, the curved edge can further protect the lawn and prevent it from being damaged by the sharp edge of the protective disc.

[0098] like Figure 4 and Figure 12 As shown, the protective disc 13 is a continuously extending structure. The protective disc 13 and the second connecting sleeve 15 form a seal below the bearing assembly 16, preventing grass clippings from entering from below the bearing assembly 16 through any gap. To further protect the bearing assembly 16, a labyrinth structure is formed between the first connecting sleeve 14 and the second connecting sleeve 15 to prevent grass clippings from entering between the first connecting sleeve 14 and the second connecting sleeve 15 and from entering the interior of the first bearing 161 from above the bearing assembly 16. This ensures that the protective disc 13 does not rotate synchronously with the cutter head 11, thus guaranteeing the functional effect of the protective disc 13.

[0099] like Figure 12 As shown, in some embodiments, the first connecting sleeve 14 further includes an extension 142 extending from the first body portion 140 toward the protective disc 13, wherein the extension 142 is located on the outer periphery of the protrusion 141. The second connecting sleeve 15 further includes a protrusion 154 protruding from the second body portion 150 toward the cutter head 11, and both the extension 142 and the protrusion 154 are hollow cylindrical structures. On the projection plane along the radial direction of the cutter head 11, the projection of the protrusion 154 and the projection of the extension 142 at least partially overlap. That is, the protrusion 154 is at least partially fitted around the outer periphery of the extension 142, or the extension 142 is at least partially fitted around the outer periphery of the protrusion 154. The protrusion 154 and the extension 142 overlap at least partially along the axial direction of the cutter head 11 to form a gap. This gap ensures the smooth rotation of the first connecting sleeve 14 relative to the second connecting sleeve 15 and effectively prevents foreign objects such as grass clippings, dust, and mud from entering the bearing assembly 16.

[0100] like Figure 13As shown, in some embodiments, one of the first connecting sleeve 14 and the second connecting sleeve 15 has a protrusion 155, and the other of the first connecting sleeve 14 and the second connecting sleeve 15 has a receiving groove 143 for accommodating at least a portion of the protrusion 155. The protrusion 155 and the receiving groove 143 cooperate to form a labyrinth structure. Optionally, the first connecting sleeve 14 has two extensions 142 forming the receiving groove 143, and the protrusion 154 of the second connecting sleeve 15 serves as the protrusion 155, with the two extensions 142 clamping at least a portion of the protrusion 154 to form a labyrinth structure. Optionally, the second connecting sleeve 15 has two protrusions 154 forming the receiving groove 143, and the extension 142 of the first connecting sleeve 14 serves as the protrusion 155, with the two protrusions 154 clamping at least a portion of the extension 142 to form a labyrinth structure. Optionally, on the projection plane along the radial direction of the cutter head 11, the overlap length of the projections of the protrusion 142 and the extension 154 is greater than the shortest distance between the first body 140 and the second body 150. That is, at least one of the extension 142 and the protrusion 154 extends into a structure disposed opposite to it. In this embodiment, the first body portion 140 is provided with a receiving groove 143. The receiving groove 143 is formed by indentation from the surface of the first body portion 140 toward the second connecting sleeve 15 toward the direction of the cutter head 11. The height of the protrusion 154 is greater than the shortest distance between the first body portion 140 and the second body portion 150, so that the protrusion 154 extends into the receiving groove 143 of the first body portion 140, and the protrusion 154 does not contact the first body portion 140 and the extension portion 142. This arrangement can not only ensure the smooth rotation of the first connecting sleeve 14 relative to the second connecting sleeve 15, but also increase the sealing performance between the first connecting sleeve 14 and the second connecting sleeve 15. The distance between the extension portion 142 and the protrusion 154 is increased, which effectively reduces the probability of grass clippings entering the first bearing 161 and increases the service life of the protective disc 13. Optionally, the receiving groove 143 is formed on the second body portion 150, and the height of the extension portion 142 is greater than the shortest distance between the first body portion 140 and the second body portion 150, so that the extension portion 142 extends into the second body portion 150. Optionally, both the extension portion 142 and the protrusion portion 154 are provided with receiving grooves 143, and the extension portion 142 and the protrusion portion 154 are at least partially received in the receiving grooves 143, further increasing the distance that grass clippings can travel from between the extension portion 142 and the protrusion portion 154 to the first bearing 161. Obviously, the gaps between the extension portion 142 and the protrusion portion 154, the gap between the extension portion 142 and the second body portion 150, and the gap between the protrusion portion 154 and the first body portion 140 are set as needed, which is necessary to ensure smooth rotation between the first connecting sleeve 14 and the second connecting sleeve 15, and to effectively prevent grass clippings from entering the first bearing 161.

[0101] like Figure 12 and Figure 14 As shown, in some embodiments, the cutting device 10 further includes a sealing structure disposed between the first connecting sleeve 14 and the second connecting sleeve 15 to prevent liquid or solid foreign objects from entering the bearing assembly 16, thereby further protecting the bearing assembly 16.

[0102] like Figure 12 As shown, the sealing structure is a seal 164, which is an annular sealing ring that covers at least the area between the inner and outer rings of the first bearing 161. This further prevents solid foreign objects such as grass clippings, dust, and mud from entering the bearing assembly 16, ensuring the normal operation of the protective disc 13. It should be noted that the seal 164 is fitted onto the protrusion 141, and the seal 164 and the protrusion 141 rotate synchronously. While the inner ring of the first bearing 161 and the protrusion 141 rotate synchronously, the outer ring of the first bearing 161 does not rotate. To reduce wear on the seal 164, it can cover the inner ring of the first bearing 161 and the area between the inner and outer rings, minimizing the contact area with the outer ring of the first bearing 161. Because the intelligent lawnmower 100 can cut at a lower cutting height, the seal 164 can not only prevent grass clippings from entering the bearing assembly 16 and ensure the normal operation of the protective disc 13, but also prevent water from entering the bearing assembly 16, reducing the chance of bearing failure and increasing the service life of the bearing assembly 16.

[0103] like Figure 14As shown, in some embodiments, the sealing structure is a waterproof structure 166 to prevent liquid foreign matter from entering the bearing assembly 16, thereby increasing the service life of the bearing assembly 16. The liquid foreign matter includes water, mud, etc. Optionally, the waterproof structure 166 seals the space between the first connecting sleeve 14 and the second connecting sleeve 15, preventing water from entering the bearing assembly 16 through the space between the first connecting sleeve 14 and the second connecting sleeve 15. Specifically, the waterproof structure 166 is fitted onto the protrusion 141 and rotates synchronously with the protrusion 141. To reduce wear between the waterproof structure 166 and the outer ring of the bearing during rotation, the waterproof structure 166 is disposed separately from the third bearing 165 or the first bearing 161, and is positioned above the first bearing 161 or the third bearing 165. To increase sealing, the second connecting sleeve 15 also includes a sealing portion 157 formed in the second body portion 150. The sealing portion 157 and the outer end of the waterproof structure 166 are as close as possible without affecting the rotation of the waterproof structure 166 relative to the sealing portion 157. Optionally, the first bearing 162 or the third bearing 165 may also be a long-neck bearing, with its inner ring being longer than its outer ring. A waterproof structure 166 is fitted onto the inner ring and the protrusion 141, further increasing the sealing performance of the waterproof structure 166 and ensuring the service life of the bearing assembly 16. Optionally, the waterproof structure 166 is an oil seal. Optionally, the waterproof structure 166 is a sealing cap, and the space formed by the sealing cap, the protrusion 141, the sealing portion 157, and the bearing assembly 16 is filled with grease for waterproofing. It should be noted that the waterproof structure 166 also serves to prevent solid foreign objects such as grass clippings from entering the bearing assembly 16.

[0104] In some embodiments, the third bearing 165, the first bearing 161, and the second bearing 162 may be replaced with bearings with longer service lives, such as waterproof bearings, ceramic bearings, or stainless steel bearings.

[0105] In this embodiment, the first connecting sleeve 14 and the cutter head 11 are separately configured to facilitate the removal of the first connecting sleeve 14 from the cutter head 11 for processing the grass clippings attached to the first connecting sleeve 14. It should be noted that this embodiment adds the first connecting sleeve 14 to the existing cutter head 11 structure to allow the protective disc 13 to be rotatably mounted onto the cutter head 11 without altering the cutter head 11 structure; the existing cutter head 11 can be used directly, reducing manufacturing processes and lowering manufacturing difficulty. Furthermore, the first connecting screw 18 is not directly connected to the motor shaft; instead, a connector is fitted onto the motor shaft, and the first connecting screw 18 is connected to the connector. This configuration reduces the probability of motor shaft damage, increases motor lifespan, reduces costs, and facilitates replacement. When the threads engaging with the first connecting screw 18 are damaged, only the connector needs to be replaced, simplifying the operation. Additionally, the fact that the first connecting screw 18 is not directly connected to the motor shaft also reduces the axial dimension of the cutting device 10.

[0106] like Figure 13 As shown above, on the side of the protective disc 13 away from the cutter head 11, the second connecting screw 19 does not protrude from the protective disc 13, thus preventing it from being loosened by hard objects. The edge of the protective disc 13 is raised towards the side where the cutter head is located, so that when the intelligent lawnmower 100 is cutting at a lower cutting height, it can effectively protect the ground from being damaged by the protective disc 13. A washer 171 is provided between the bearing fixing screw 17 and the protrusion 141. The washer 171 is sleeved on at least a portion of the end of the protrusion 141 away from the first body part 140, and the washer 171 and the protrusion 141 are fixed by a flat square limit. When the bearing fixing screw 17 and the protrusion 141 are engaged, the washer 171 is fixed between the protrusion 141 and the bearing fixing screw 17. The shim 171 prevents direct contact between the bearing fixing screw 17 and the second bearing 162, effectively avoiding friction caused by relative rotation between the bearing fixing screw 17 and the second bearing 162, thus preventing wear and loosening of the bearing fixing screw 17. The shim 171 ensures synchronous rotation of the bearing fixing screw 17 and the first connecting sleeve 14, and improves the wear and loosening of the bearing fixing screw 17, thereby enhancing the stability of the intelligent lawnmower 100. Figure 12 or Figure 14 As shown, in the above embodiment, the bearing fixing screw 17 directly engages with the protrusion 141, and the bearing fixing screw 17 contacts the inner ring of the second bearing 162 but does not contact the outer ring of the second bearing 162. The bearing fixing screw 17 and the inner ring of the second bearing 162 rotate synchronously, and there is no friction between the bearing fixing screw 17 and the outer ring of the second bearing 162 due to relative rotation, which can also meet the requirements.

[0107] For example, see Figures 1 to 12 The intelligent lawnmower 100 disclosed herein is applicable to golf courses and other similar venues. This intelligent lawnmower 100 can move autonomously along a preset path on a golf course and perform mowing operations. It includes a body 20, drive wheels 41 mounted on both rear sides of the body 20, steering wheels mounted on both front sides of the body 20, two staggered cutting devices 3 mounted on the body 20, a control device 50, an energy module, and a positioning device mounted on the body 20. The drive device 30 is a motor, and the motor's output shaft is connected to the cutting devices 10 to drive the cutting devices 10 to rotate and perform mowing operations.

[0108] The cutting device 10 includes a cutter head 11, a first connecting sleeve 14 mounted on the cutter head 11 by a first connecting screw 18, a bearing assembly 16 connected to the first connecting sleeve 14 by a bearing fixing screw 17, a second connecting sleeve 15 mounted to the bearing assembly 16 by an interference fit, and a protective disc 13 connected to the second connecting sleeve 15 by a second connecting screw 19. Six cutting elements 12 are connected to the cutter head 11 by fastening screws 112. The six cutting elements 12 are distributed on two cutting surfaces. Three cutting elements are evenly distributed along the circumference of the cutter head 11 in each cutting surface. The projections of the six cutting elements 12 in a plane perpendicular to the rotation axis of the cutter head 11 do not coincide; that is, the six cutting elements 43 are staggered and spaced along the cutter head 11 to ensure the rotational stability of the cutter head 11.

[0109] By setting a protective disc 13 on the side of the cutter head 11 away from the machine body 20, and through the first connecting sleeve 14, the second connecting sleeve 15, and the bearing assembly 16, the protective disc 13 and the cutter head 11 can rotate relative to each other, that is, the protective disc 13 and the cutter head 11 do not rotate together. When the cutting device 10 is running, the cutter head 11 rotates at high speed, and the protective disc 13 comes into contact with the dense grass. The protective disc 13 can remain stationary or rotate slowly. On the one hand, due to the obstruction of the protective disc 13, the cutter head 11 does not contact the grass or has little contact with it, thereby reducing the frictional resistance of the grass to the cutter head 11 and the resulting energy loss, thus reducing the cutting load and cutting energy consumption, and improving cutting efficiency. On the other hand, the protective disc 13 can block grass clippings on the side away from the cutter head 11, preventing grass clippings from entering the inner side of the protective disc 13 and accumulating between the cutter head 11 and the cutting element 12, thereby improving the cutting ability of dense grass. The outer diameter of the protective disc 13 is the same as that of the cutter head 11, so that the protective disc 13 can provide sufficient safety protection for the cutter head 11 and each fixing part 122.

[0110] The first connecting sleeve 14 and the second connecting sleeve 15 form a labyrinth structure. A seal 164 is provided at the upper end of the bearing assembly 16, which effectively prevents grass clippings from entering the bearing assembly 16 from above, ensuring the normal operation of the bearing assembly 16 and preventing the protective disc 13 from failing. The first connecting sleeve 14 is detachably installed on the cutter head 11, so as to facilitate the removal of the first connecting sleeve 14 from the cutter head 11 to handle the grass clippings attached to the first connecting sleeve 14.

[0111] Please see Figure 13The edge of the protective disc 13 of the intelligent lawnmower 100 disclosed herein is raised to protect the ground. The protrusion 154 extends into the first body part 140 to increase the sealing performance between the first connecting sleeve 14 and the second connecting sleeve 15. A washer 171 is provided between the bearing fixing screw 17 and the protrusion 141 to ensure the synchronous rotation of the bearing fixing screw 17 and the first connecting sleeve 14, and to improve the wear and loosening problem of the bearing fixing screw 17, thereby improving the stability of the intelligent lawnmower 100 in use.

[0112] For example, see Figure 13 The intelligent lawnmower 100 disclosed herein is applicable to golf courses and other similar venues, and can perform cutting operations at relatively low cutting heights. The first connecting sleeve 14 and the second connecting sleeve 15 form a labyrinth structure. The bearing assembly 16 includes only one third bearing 165, with a waterproof structure 166 at its upper end. This effectively prevents grass clippings and water from entering the bearing assembly 16 from above, ensuring its normal operation, preventing the protective disc 13 from failing, and increasing the service life of the bearing assembly 16. The first connecting sleeve 14 is detachably mounted to the cutter head 11, facilitating its removal for handling attached grass clippings. The protective disc 13 has raised edges to protect the ground, and a protrusion 154 extends into the first body portion 140, increasing the sealing performance between the first connecting sleeve 14 and the second connecting sleeve 15. The bearing fixing screw 17 is directly mounted to the protrusion 141, simplifying the structure while meeting performance requirements.

[0113] In summary, the intelligent lawnmower provided in this disclosure, by setting a protective disc on the side of the blade disc away from the machine body, and by using a bearing assembly to allow the protective disc and the blade disc to rotate relative to each other, on the one hand, the protective disc can isolate the blade disc from the lawn, thereby reducing the frictional resistance of the lawn to the blade disc and the resulting energy loss, thus reducing the cutting load and cutting energy consumption, and improving cutting efficiency; on the other hand, the protective disc can block grass clippings on the side away from the blade disc, preventing grass clippings from intruding into the inner side of the protective disc and accumulating between the blade disc and the cutting element, thereby improving the ability to cut dense grass.

[0114] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this disclosure as described above, which are not provided in detail for the sake of brevity.

[0115] Although this disclosure has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0116] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A smart lawnmower, characterized in that, include: fuselage (20); A mobile device (40) is mounted on the body (20) to support and drive the body (20) to move within the working area; A drive unit (30) is mounted on the fuselage (20); A cutting device (10) is located at the bottom of the machine body (20). The cutting device (10) rotates around its own axis under the driving action of the driving device (30). A control device (50) is installed on the body (20) and is signal-connected to the moving device (40) and the cutting device (10) to control the automatic movement and automatic operation of the intelligent lawnmower (100); The cutting device (10) includes: The cutter head (11) is rotatably mounted on the machine body (20); A cutting element (12) is disposed on the cutter head (11) and rotates with the cutter head (11); A protective disc (13) is located on the side of the cutter head (11) away from the machine body (20); The protective disc (13) and the cutting disc (11) are rotatable relative to each other. The orthographic projection of the protective disc (13) on the cutting disc (11) is at least partially located inside the cutting disc (11), and the orthographic projection of the protective disc (13) on the cutting disc (11) is located inside the orthographic projection of the cutting piece (12) on the cutting disc (11). The cutting device (10) further includes: The first connecting sleeve (14) is fixedly connected to the cutter head (11) and is located on the side of the cutter head (11) close to the protective disc (13); The second connecting sleeve (15) is fixedly connected to the protective disc (13) and is located on the side of the protective disc (13) close to the cutter disc (11); The bearing assembly (16) is disposed between the first connecting sleeve (14) and the second connecting sleeve (15).

2. The intelligent lawnmower according to claim 1, characterized in that, The cutting component (12) includes a cutting part (121) and a fixing part (122). The fixing part (122) is connected to the cutter disc (11). The cutting part (121) can extend outward from the cutter disc (11). The orthographic projection of the protective disc (13) on the cutter disc (11) at least partially overlaps with the orthographic projection of the fixing part (122) on the cutter disc (11).

3. The intelligent lawnmower according to claim 1, characterized in that, The cutting device (10) includes at least two sets of cutting elements (12) for forming different cutting heights, wherein each set of cutting elements (12) has the same cutting height; the cutter disc (11) is uniformly provided with a plurality of cutting elements (12) along the circumference, and each pair of adjacent cutting elements (12) is located on opposite sides of the cutter disc (11).

4. The intelligent lawnmower according to claim 1, characterized in that, The cutter head (11) includes a cutter head body (111) and a receiving cavity (110). The receiving cavity (110) is formed by the cutter head body (11) recessed in a direction away from the protective disk (13). The first connecting sleeve (14) is at least partially located in the receiving cavity (110). The first connecting sleeve (14) includes a first body portion (140) and a protrusion portion (141). The protrusion portion (141) is disposed on the side of the first body portion (140) near the protective disk (13). The protrusion portion (141) is at least partially located inside the second connecting sleeve (15). The bearing assembly (16) is sleeved on the protrusion portion (141).

5. The intelligent lawnmower according to claim 1, characterized in that, The bearing assembly (16) includes a first bearing (161), a second bearing (162), and a bearing washer (163) arranged coaxially, with the bearing washer (163) located between the first bearing (161) and the second bearing (162). The second connecting sleeve (15) includes a second body part (150), in which a first mounting groove (151), a second mounting groove (152) and an annular platform (153) are provided. The first mounting groove (151) is located on the side of the second mounting groove (152) away from the protective plate (13), and the annular platform (153) is located between the first mounting groove (151) and the second mounting groove (152). The first bearing (161) is installed in the first mounting groove (151), the second bearing (162) is installed in the second mounting groove (152), and the bearing washer (163) is located inside the ring (153).

6. The intelligent lawnmower according to claim 1, characterized in that, The cutting device (10) further includes a first connecting screw (18), a second connecting screw (19), and a bearing fixing screw (17). The first connecting sleeve (14) is fixedly connected to the cutter disc (11) by the first connecting screw (18). The second connecting sleeve (15) is fixedly connected to the protective disc (13) by the second connecting screw (19). The bearing assembly (16) is installed inside the second connecting sleeve (15). The bearing fixing screw (17) passes through the bearing assembly (16) and is fixedly connected to the first connecting sleeve (14).

7. The intelligent lawnmower according to claim 1, characterized in that, The outer peripheral edge of the protective disc (13) is at least partially raised toward the side where the cutter disc (11) is located.

8. The intelligent lawnmower according to claim 1, characterized in that, The first connecting sleeve (14) includes a first body portion (140) and at least one extension portion (142) extending from the first body portion (140) toward the protective disc (13); the second connecting sleeve (15) includes a second body portion (150) and at least one protruding portion (154) protruding from the second body portion (150) toward the cutter head (11); on the projection plane along the radial direction of the cutter head (11), the projection of the protruding portion (154) and the projection of the extension portion (142) at least partially overlap.

9. The intelligent lawnmower according to claim 1, characterized in that, One of the first connecting sleeve (14) and the second connecting sleeve (15) has a protrusion (155), and the other of the first connecting sleeve (14) and the second connecting sleeve (15) has a receiving groove (143) for receiving at least part of the protrusion (155).

10. The intelligent lawnmower according to any one of claims 1 to 9, characterized in that, A sealing structure is provided between the first connecting sleeve (14) and the second connecting sleeve (15) to prevent liquid or solid foreign objects from entering the bearing assembly (16).

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