Cutting assembly and lawn care device

Abstract

The embodiment of the application provides a cutting assembly and a lawn working equipment, comprising a cutter head, a blade, the cutter head is provided with a protection piece, the protection piece is located between any two adjacent blades, the blade is rotationally connected to the cutter head through a connecting piece, and the projection of the connecting piece is located in the projection of the protection piece in the radial direction of the cutter head. By arranging the protection piece between the two adjacent blades, the grass cuttings in the cutting process can be effectively blocked from entering the gap between the blade and the cutter head, and the problem of grass jamming of the cutting assembly is avoided. Meanwhile, the projection of the connecting piece is located in the projection of the protection piece, the risk of collision and wear between the connecting piece and the obstacle is reduced, the installation position of the connecting piece is raised, and the grass is prevented from being entangled. The overall structure of the cutting assembly is more compact, the assembly process is simplified without the need of additionally arranging a grass pressing disc, the manufacturing cost and the overall load are reduced, and the working efficiency of the lawn working equipment is improved.

Description

Technical Field

[0001] This application relates to the field of robotics, and more particularly to a cutting assembly and grass-cutting equipment. Background Technology

[0002] With the development of smart devices, automated lawn maintenance equipment, such as lawn mowing robots, has been widely used in lawn maintenance. These types of devices can autonomously navigate, avoid obstacles, and complete mowing tasks, improving the efficiency of lawn management. However, when using existing disc mowers, the grass clippings cut by the blades are flung off and easily get into the gap between the blade and the disc, causing the blade to get stuck and affecting its normal cutting function. Furthermore, the grass-pressing disc increases the weight of the disc, increasing the load on the lawnmower, and the continuous pressing of the grass by the grass-pressing disc increases friction on the lawnmower's movement. In addition, the addition of a grass-pressing disc increases the number of components in the disc, making the structure more complex, assembly more difficult, and resulting in higher costs. Utility Model Content

[0003] In view of this, this application provides a cutting assembly and a lawn operation device. By setting a protective component on the cutting assembly, grass clippings are effectively prevented from entering the gap between the blade and the cutter head, thus avoiding the problem of grass getting stuck in the cutting assembly. Furthermore, the protective component can reduce the risk of collision and wear between the connecting parts and obstacles, thereby improving the working efficiency of the lawn operation device.

[0004] In a first aspect, embodiments of this application propose a cutting assembly for cutting grass on a grassy area to be cut. The cutting assembly includes: a cutting disc, blades, at least two blades arranged circumferentially on the side of the cutting disc facing the grass to be cut, a protective member provided on the cutting disc, the protective member being located between any two adjacent blades; and a connecting member, the blades being rotatably connected to the cutting disc via the connecting member, the projection of the connecting member being located within the projection of the protective member along the radial direction of the cutting disc.

[0005] By placing a protective element between two adjacent blades, when the cutting assembly is operating on grass, the protective element effectively prevents grass clippings from entering the gap between the blade and the cutter head, effectively solving the problem of grass getting stuck in the cutting assembly. Simultaneously, the projection of the connecting piece is located within the projection of the protective element. When the cutting assembly's blades cut the grass, obstacles such as stones and impurities will first contact the protective element, reducing the risk of collision and wear between the connecting piece and obstacles. Furthermore, raising the installation position of the connecting piece prevents weeds from tangling. The overall structure of the cutting assembly is more compact, eliminating the need for an additional grass-pressing disc, simplifying the assembly process, reducing manufacturing costs and overall machine load, and improving the working efficiency of the grass-cutting equipment.

[0006] In one possible implementation, the protective component and the cutter head enclose at least two protective cavities, with the blades located within these cavities. By providing protective cavities to accommodate the blades, a certain degree of space is created for the blades' cutting operation, which helps to limit and guide the direction of the cut grass clippings, preventing them from flying laterally between the blades or crossing the protective component to enter the gap between the cutter head. This effectively avoids the problem of grass clippings getting stuck in the gap between the blades and the cutter head, improving the smoothness and reliability of the cutting process.

[0007] In one possible implementation, the protective component includes a first protrusion and a second protrusion, which form a protective surface that is arc-shaped. By specifically designing the protective surface as arc-shaped, when the cutting assembly accidentally impacts a hard obstacle such as a rock during the cutting operation, the arc shape of the protective surface helps to disperse the impact force from the obstacle, achieving a smooth collision. This helps to avoid the instantaneous rigid impact of the hard obstacle on the protective component, and also reduces the impact of the hard obstacle on the surrounding bone of the cutter head. This avoids stress concentration during the impact of the hard obstacle, which could lead to deformation or cracking of the cutting assembly, thus improving the impact resistance, durability, and operational reliability of the cutting assembly.

[0008] In one possible implementation, there are multiple first protrusions, which circumferentially surround a second protrusion, and the second protrusion and the multiple first protrusions are connected to form a whole. By forming the multiple first protrusions and the second protrusion into a whole, the structural strength and overall rigidity of the protective component are enhanced, making it less prone to local breakage or deformation when subjected to impacts from external hard objects or other impurities. This further optimizes the impact resistance of the protective component and extends the service life of the protective component and the entire cutting assembly.

[0009] In one possible implementation, the second protrusion and the cutter head together form a groove. The groove accommodates the first fixing hole of the cutter head, which is used to mount the output shaft of the drive mechanism, enabling the drive mechanism to rotate the cutter head. The output shaft of the drive mechanism is accommodated and protected within the groove, protecting the connection between the drive mechanism and the cutter head. This provides a certain degree of protection for the drive mechanism, helps prevent impurities such as grass clippings from entering or entangled in the connection of the output shaft, ensures the stability and reliability of power transmission, and further improves the integration and protective performance of the cutting assembly.

[0010] In one possible implementation, the connector includes a screw, the cutter head includes a second fixing hole, and the blade includes a third fixing hole. The screw is threaded sequentially into the second and third fixing holes. By using a screw as the connector and designing corresponding fixing holes, the blade is fixed to the cutter head. This connection method has a simple structure and convenient assembly process. When the blade wears out, simply unscrew the screw for easy blade replacement, improving maintenance efficiency. Furthermore, the threaded connection provides a stable tightening force, ensuring the reliability of the blade's connection to the cutter head during cutting operations and avoiding the risk of loosening.

[0011] In one possible implementation, the screw includes a screw shaft and a screw head, and a blade is used to rotate around the screw shaft to cut the grass on the lawn to be cut. The screw head plays a certain axial limiting role, ensuring a certain connection between the blade and the cutter head by allowing the blade to rotate around the screw shaft, so that the blade can rotate smoothly when cutting the grass on the lawn to be cut.

[0012] In one possible implementation, the screw head is located within the protective cavity. By placing the screw head within the protective cavity, when the cutter head encounters hard obstacles such as stones below, the lower-positioned protective component will preferentially contact and collide with the obstacle. This effectively avoids direct impact between the screw head and the obstacle in physical space, preventing wear, deformation, or damage to the screw head due to impact. This extends the service life of the connector, reduces maintenance costs, and further ensures the continuity and safety of the cutting assembly during cutting operations.

[0013] In one possible implementation, the blade rotates around the central axis of the screw head, with the central axis of the screw head forming an angle with the central axis of the cutter head, or the central axis of the screw head and the central axis of the cutter head are parallel. By mounting the blade obliquely on the cutter head, the blade forms an oblique shear during rotational cutting, reducing the contact area between the blade and the grass, increasing pressure, and thus effectively reducing cutting resistance and power consumption. It also raises the installation position of the screw head and connector, making the overall position of the screw higher than the cutting height, greatly reducing the risk of weed entanglement and further avoiding direct impact between the connector and ground obstacles, thus balancing efficient cutting with high reliability. Furthermore, horizontally mounted blades simplify the installation process.

[0014] In one possible implementation, the protective component is detachably connected to the cutter head. By providing a detachable protective component, when it is damaged due to long-term wear or accidental impact during cutting, maintenance personnel do not need to replace the entire cutter head; they only need to remove and replace the protective component. This effectively reduces the difficulty of subsequent maintenance and the cost of replacing parts, thus improving the product's economic efficiency.

[0015] Secondly, this application provides a grass-cutting device, including a main body and the aforementioned cutting assembly, which is located at the bottom of the main body. By mounting the cutting assembly on the main body of the grass-cutting device and arranging a protective element between adjacent blades, when the cutting assembly performs grass-cutting operations, the protective element effectively prevents grass clippings from entering the gap between the blades and the cutter head, effectively solving the problem of grass getting stuck in the cutting assembly. Simultaneously, the projection of the connecting element is located within the projection of the protective element, reducing the risk of collision and wear between the connecting element and obstacles. The overall structure of the cutting assembly is more compact, eliminating the need for an additional grass-pressing disc, simplifying the assembly process, reducing manufacturing costs and overall machine load, and improving the working efficiency of the grass-cutting device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a grassland operation equipment provided in an embodiment of this application; Figure 2 yes Figure 1 A bottom view of the grass-laying equipment in operation; Figure 3 This is a schematic diagram of the structure of a cutting component provided in an embodiment of this application; Figure 4 This is another schematic diagram of the structure of a cutting component provided in an embodiment of this application; Figure 5 This is a partial schematic diagram of the structure of a cutting component provided in an embodiment of this application; Figure 6 This is another partial schematic diagram of the structure of a cutting component provided in an embodiment of this application; Figure 7 This is another partial schematic diagram of the structure of a cutting component provided in an embodiment of this application; Figure 8 This is a side view of the structure of a cutting component provided in an embodiment of this application; Figure 9 This is a cross-sectional view of the structure of a cutting component provided in an embodiment of this application; Figure 10 yes Figure 9 This application provides a partially enlarged cross-sectional view of a cutting component structure.

[0017] Figure Labels Grassland operation equipment - 1000; Equipment body - 100; Walking wheels - 110; Cutting assembly - 200; Cutter head - 210; Top surface - 210a; Bottom surface - 210b; Protective cavity - 211; Surrounding frame - 212; Blade - 220; Protective component - 230; Protective surface 230a; First protrusion - 231; Second protrusion - 232; Groove - 233; First fixing hole - 2101; Second fixing hole - 2102; Third fixing hole - 2103; Connector - 240; Screw head - 241; Screw shaft - 242; Central axis of screw head 241 - L2; Axis parallel to the central axis of cutter head 210 - L1; Included angle - α; Lowest point of protective component 230 - P1; Lowest point of screw head 241 - P2.

[0018] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0019] The embodiments of this application are described below with reference to the accompanying drawings.

[0020] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0021] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0023] It should be understood that the terms "first," "second," etc., used in this application are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0024] In the description of this application, the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "joining" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" means that the components are connected to each other and their relative positional relationship remains unchanged after connection. "Rotary connection" means that the components are connected to each other and can rotate relative to each other after connection. The term "integral molding" means that during the formation of one of a plurality of components, that component is connected to the other components without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to join the two components together. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] The possible embodiments of this application are described below with reference to the accompanying drawings.

[0027] The development of automated mobile devices is rapid, and their application scenarios are gradually increasing. Automated mobile devices, such as lawnmower robots, can perform automatic tasks on lawns, such as mowing, watering, seeding, and fertilizing, making them essential robots for home lawn care. These devices can autonomously navigate, avoid obstacles, and complete mowing tasks, improving the efficiency of lawn management. However, when using existing rotary blade mowing machines, the grass clippings cut by the blades are often thrown around and easily get into the gap between the blade and the blade disc, causing grass to get stuck and affecting the blade's normal cutting function. Furthermore, the grass-pressing disc increases the weight of the blade disc, increasing the load on the lawnmower, and the continuous pressing of the grass by the grass-pressing disc increases friction during the mower's movement. In addition, the addition of a grass-pressing disc increases the number of components in the blade disc, making the structure complex, difficult to assemble, and resulting in higher costs.

[0028] Figure 1 This is a schematic diagram of the structure of a grassland operation equipment provided in an embodiment of this application. Figure 2 yes Figure 1 A bottom view of the lawn care equipment in operation. The lawn care equipment 1000 can be used for mowing, watering, seeding, and fertilizing. (Combined with...) Figure 1 and Figure 2As shown, the lawn maintenance equipment 1000 includes a main body 100 and a cutting component 200. The cutting component 200 is disposed on the main body 100, specifically at the bottom of the main body 100, and is used to cut the grass on the lawn to be maintained. The main body 100 is used for the primary operation, while the cutting component 200 is used to cut the grass on the lawn. Thus, the lawn maintenance equipment 1000 can maintain the grass on the lawn through the cutting component 200, eliminating the need for manual lawn care by the user, improving user experience, and reducing labor intensity. In one possible implementation, the number of cutting components 200 may include at least one; for example, the number of cutting components 200 may be one, two, or three, etc. This embodiment of the application is described exemplarily with one cutting component 200.

[0029] See Figure 1 The grass-cutting equipment 1000 may include, but is not limited to, hand-held devices, riding devices, and fully automatic intelligent devices, etc., and this application does not limit this. The grass-cutting equipment 1000 can move on the ground. For example, the grass-cutting equipment 1000 can move on the ground by being pushed by a user. Or, for example, the grass-cutting equipment 1000 has its own mobility. Specifically, the grass-cutting equipment 1000 includes walking wheels 110, which can automatically move on the ground. In the embodiments of this application, the grass-cutting equipment 1000 includes walking wheels 110, which are located at the bottom of the equipment body 100 and are used to drive the grass-cutting equipment 1000 to move. The cutting component 200 is at a certain distance from the walking wheels 110. Specifically, the walking wheels 110 and the cutting component 200 have no contact parts, thereby avoiding the risk of interference between the cutting component 200 and the walking wheels 110, which helps to improve the safety of the cutting component 200 and ensure the cutting operation of the cutting component 200.

[0030] Figure 3 This is a schematic diagram of the structure of a cutting component provided in an embodiment of this application. Figure 3 The bottom surface of the cutting component is shown. Figure 4 This is another schematic diagram of the structure of a cutting component provided in an embodiment of this application. Figure 4 The top surface of the cutting assembly is shown. (Combined) Figure 2 , Figure 3 and Figure 4As shown, in one possible implementation, the lawn cleaning equipment 1000 includes a main body 100 and a cutting assembly 200. The cutting assembly 200 and the traveling wheels 110 are arranged sequentially along the traveling or reversing direction of the lawn cleaning equipment 1000. The cutting assembly 200 includes a blade 220 and a cutter disc 210. There is one cutter disc 210, and its shape is circular. It is understood that the shape of the cutter disc 210 can be elliptical or other circular shapes. Along the radial direction of the cutter disc 210, the cutter disc 210 has a top surface 210a and a bottom surface 210b disposed opposite each other. In this embodiment, the side of the cutter disc 210 facing the lawn to be cleaned is exemplarily described as the bottom surface 210b, and the side of the cutter disc 210 facing away from the lawn to be cleaned is described as the top surface 210a. The number of blades 220 is at least two; understandably, it can be three, four, or five, etc. Multiple blades 220 are arranged circumferentially along the side of the cutter head 210 facing the grass to be cut. The spacing between the multiple blades 220 is equal, ensuring that the blades 220 are evenly distributed on the cutter head 210, resulting in more even cutting and ensuring that each blade 220 receives uniform force. The cutter head 210 rotates relative to the main body 100, thereby causing the blades 220 to rotate relative to the main body 100 and cut the grass on the grass to be cut.

[0031] The cutter head 210 is equipped with multiple protective elements 230, which can be three, four, or five. Each protective element 230 is located between any two adjacent blades 220. The bottom surface of the cutter head 210 has multiple downward-protruding protective elements 230. Along the radial direction of the cutter head 210, each protective element 230 protrudes slightly relative to the cutter head, thus preventing grass clippings, debris, and other external impurities from entering the cutter head 210. The protective elements 230 can be rectangular, arc-shaped, or similar. With multiple protective elements 230 located between any two adjacent blades 220, when the cutting assembly 200 is operating on grass, the protective elements 230 between any two adjacent blades 220 effectively prevent grass clippings and other external impurities from entering the gap between the blades 220 and the cutter head 210, thereby avoiding grass jamming issues with the cutting assembly 200.

[0032] The cutting assembly 200 also includes a connector 240. The blade 220 is rotatably connected to the cutter head 210 via the connector 240, which stably connects the blade 220 to the cutter head 210. The connector 240 can rotate relative to the cutter head 210, thereby driving the blade 220 to rotate relative to the cutter head 210, and further enabling the blade 220 to rotate around the connector 240 to cut the grass on the grass to be cut.

[0033] Along the radial direction of the cutter head 210, the projection of the connector 240 lies within the projection of the protective member 230; that is, along the radial direction of the cutter head 210, the projection of the protective member 230 completely covers the projection of the connector 240. Along the radial direction of the cutter head 210, the lowest point of the protective member 230 is lower than the height of the connector 240. When the blade 220 of the cutting assembly 200 cuts the grass on the grass to be cut, obstacles first contact the protective member 230 without contacting the connector 240. The protective member 230 serves as the primary point of contact for obstacles, thereby reducing the risk of wear on the connector 240 caused by obstacles contacting it.

[0034] By arranging the protective component 230 between two adjacent blades 220, when the cutting assembly 200 is performing grass cutting operations, the protective component 230 effectively prevents grass clippings from entering the gap between the blades 220 and the cutter head 210, effectively solving the problem of grass getting stuck in the cutting assembly 200. Simultaneously, the lowest point of the protective component 230 is lower than the height of the connecting member 240. When the blades 220 of the cutting assembly 200 cut the grass, obstacles such as stones and impurities will first contact the protective component 230, reducing the risk of collision and wear between the connecting member 240 and obstacles. Furthermore, raising the installation position of the connecting member 240 prevents weed entanglement. The overall structure of the cutting assembly 200 is more compact, eliminating the need for an additional grass-pressing disc, simplifying the assembly process, reducing manufacturing costs and overall machine load, and improving the working efficiency of the grass cutting equipment 1000.

[0035] Continue to combine Figure 2 and Figure 3 As shown, in one possible implementation, the cutting component 200 can be configured as one or more. At least one cutting component 200 is disposed at the bottom of the equipment body 100. The cutting component 200 is detachably mounted on the equipment body 100. This facilitates, on the one hand, maintenance, replacement, and cleaning of the various parts of the cutting component 200 without disassembling the entire equipment body 100, and allows for separate transport of the cutting component 200 and the equipment body 100, improving transportation and installation convenience; on the other hand, it enables flexible switching between different cutting components 200. For example, the equipment body 100 can switch between different cutting components 200 according to different work tasks, improving the flexibility of the grass operation equipment 1000 in work switching and enriching the application scenarios of the grass operation equipment 1000. In one possible implementation, the cutting component 200 can also be non-detachably connected to the equipment body 1000.

[0036] Combination Figure 3As shown, in one possible implementation, the protective member 230 and the cutter head 210 enclose at least two protective cavities 211, and the blade 220 is located within the protective cavity 211. The protective member 230, which protrudes downward from the bottom surface 210b of the cutter head 210, together with the bottom surface 210b of the cutter head 210 itself, encloses multiple protective cavities 211. The protective cavities 211 are evenly arranged and independently positioned along the axial direction of the cutter head 210. Each blade 220 is accommodated within an independent protective cavity 211, that is, the rotational trajectory of each blade 220 is located within the protective cavity 211, so as to limit the direction of flight of the grass clippings cut by each blade 220 when cutting grass.

[0037] In one possible implementation, the protective component 230 and the cutter head 210 are integrally formed. Multiple protective components 230 are formed simultaneously when the cutter head 210 is processed. The multiple protective components are integrally formed with the cutter head 210, and multiple protective cavities 211 are formed simultaneously.

[0038] By providing a protective cavity 211 to accommodate each blade 220, a certain restricted space is created for the cutting operation of the blade 220. This helps to limit and guide the direction of the splashing of the cut grass clippings, preventing the grass clippings from flying laterally between the blades 220 or crossing the protective part 230 and entering the gap between the cutter head 210. This effectively avoids the problem of grass clippings getting stuck in the gap between the blades 220 and the cutter head 210, and improves the smoothness and reliability of the cutting operation.

[0039] Combination Figure 3 As shown, in one possible embodiment, the protective member 230 includes a first protrusion 231 and a second protrusion 232, that is, the first protrusion 231 and the second protrusion 232 are integrally formed and together form the protective member 230. The first protrusion 231 and the second protrusion 232 form a protective surface 230a, which is an arc surface. The first protrusion 231 and the second protrusion 232 extend downward along the bottom surface 210b of the cutter head 210 and connect to form a continuous and smooth protective surface 230a. The opening of the protective surface 230a faces the direction where the blade 220 is located, and the shape of the protective surface 230a is an arc surface.

[0040] In one possible implementation, the first protrusion 231, the second protrusion 232, and the cutter head 210 surround each other to form a plurality of protective cavities 211. The protective cavities 211 are also arc-shaped and are used to accommodate the plurality of blades of the cutting assembly 200.

[0041] Combination Figure 3 and Figure 4As shown, in one possible embodiment, the cutter head 210 further includes a surrounding rib 212, which is disposed on the top surface 210a of the cutter head 210. Along the radial direction of the cutter head 210, the surrounding rib 212 extends a certain height towards the top surface 210a of the cutter head 210, providing a certain degree of isolation from the external environment, thereby preventing grass clippings or other impurities from splashing into the interior of the cutter head 210. Along the circumferential direction of the cutter head 210, a second protrusion 232 surrounds the outer periphery of the surrounding rib.

[0042] By specifically designing both the protective surface 230a and the protective cavity 211 as arc-shaped, when the cutting assembly 200 accidentally collides with hard obstacles such as stones during the cutting operation, the arc-shaped setting of the protective surface 230a and the protective cavity 211 helps to disperse the impact force from the obstacle and achieve a smooth collision. This helps to avoid the instantaneous rigid impact of hard obstacles on the protective component 230, and at the same time, it can also reduce the impact of hard obstacles on the surrounding bone 212 at the center of the cutter head 210. This avoids stress concentration during the impact of hard obstacles, which could lead to deformation or cracking of the cutting assembly 200, and improves the impact resistance, durability and operational reliability of the cutting assembly 200.

[0043] Combination Figure 3 and Figure 4 As shown, in one possible implementation, there are multiple first protrusions 231, which are arranged circumferentially around a second protrusion 232. The second protrusion 232 and the multiple first protrusions 231 are connected to form a whole. It is understood that the number of first protrusions 231 can be three, four, or five, etc. Along the circumferential direction of the cutter head 210, the multiple first protrusions 231 are evenly distributed on the cutter head 210, and are arranged around the second protrusion 232. The second protrusion 232 is located in the central portion, and the multiple first protrusions 231 are circumferentially surrounding the periphery of the second protrusion 232. The multiple first protrusions 231 and the second protrusion 232 are an integral structure, and are smoothly connected to form an inseparable whole structure, together forming the protective member 230.

[0044] Multiple first protrusions 231 are arranged circumferentially around the second protrusion 232 and form a whole to constitute the protective component 230. This helps to enhance the structural strength and overall rigidity of the protective component 230, making it less prone to local breakage or deformation when subjected to impacts from external hard objects or other impurities. This further optimizes the impact resistance of the protective component 230 and extends the service life of the protective component 230 and the entire cutting assembly 200.

[0045] Combination Figure 3 and Figure 4As shown, in one possible embodiment, the second protrusion 232 and the cutter head 210 enclose a groove 233. Multiple second protrusions 232 are connected together and, together with the bottom surface of the cutter head 210, form a groove 233. The side of the groove 233 facing the grass to be treated is recessed. The groove 233 is used to accommodate the first fixing hole 2101 of the cutter head 210. The first fixing hole 2101 is located at the center of the groove 233 and is used to install the output shaft of the drive mechanism, so that the drive mechanism drives the cutter head 210 to rotate.

[0046] Along the radial direction of the cutter head 210, the surrounding bone 212 and the groove 233 are arranged opposite to each other. The groove 233 can accommodate the first fixing hole 2101 of the cutter head 210, and the surrounding bone 212 can also surround the first fixing hole 2101 of the cutter head 210, so that when the output shaft of the drive mechanism is connected to the first fixing hole 2101, the surrounding bone 212 provides a certain protection for the output shaft.

[0047] In one possible implementation, the drive mechanism of the cutting assembly 200 can be a motor. The output shaft of the drive mechanism passes through the first fixing hole 2101 and is fixedly connected to the cutter head 210, thereby transmitting torque to the cutter head 210 to drive it to rotate, which in turn drives the blades 220 to rotate to cut the grass on the grass to be cut. The output shaft of the drive mechanism is accommodated and protected in the groove 233, protecting the connection between the drive mechanism and the cutter head 210, providing a certain degree of protection for the drive mechanism, and helping to prevent grass clippings and other impurities from entering or entangled in the connection of the output shaft of the drive mechanism, ensuring the stability and reliability of power transmission, and further improving the integration and protection performance of the cutting assembly 200. Moreover, the groove that accommodates the first fixing hole 2101 is formed by the second protrusion 232 and the cutter head 210, protecting the output shaft of the drive mechanism within the structure of the protective member 230, and also optimizing the spatial layout of the cutter head 210, making the structure of the cutter head 210 more compact and improving space utilization.

[0048] Figure 5 This is a partial schematic diagram of the structure of a cutting component provided in an embodiment of this application. Figure 6 This is another partial schematic diagram of the structure of a cutting component provided in an embodiment of this application. Figure 7 This is another partial schematic diagram of the structure of a cutting component provided in an embodiment of this application. Figure 5 and Figure 6 The connectors for the cutting assembly are not shown. (Connection) Figure 5 , Figure 6 and Figure 7As shown, in one possible implementation, the connector 240 includes a screw, the cutter head 210 includes a second fixing hole 2102, the blade 220 includes a third fixing hole 2103, and the screw is threadedly connected to the second fixing hole 2102 and the third fixing hole 2103 in sequence.

[0049] Combination Figure 5 , Figure 6 and Figure 7 As shown, the connector 240 can be a screw 240. The cutter head 210 has a second fixing hole 2102 that passes through the cutter head 210 in the radial direction. The blade 220 has a third fixing hole 2103 that passes through the blade 220 in the radial direction. The second fixing hole 2102 and the third fixing hole 2103 are arranged opposite to each other in the radial direction of the cutter head 210. The screw 240 passes through the second fixing hole 2102 and the third fixing hole 2103 in sequence and is threaded into the second fixing hole 2102 and the third fixing hole 2103, thereby connecting the blade 220 to the cutter head 210 and increasing the tightness between the blade 220 and the cutter head 210.

[0050] By using screws as connectors 240 and designing corresponding fixing holes, the blade 220 is connected to the cutter head 210, thus achieving a fixed connection between the blade 220 and the cutter head 210. This connection method has a simple structure and convenient assembly process. When the blade 220 wears out, simply unscrewing the screws facilitates replacement, improving maintenance efficiency. Furthermore, the threaded connection provides a stable tightening force, ensuring the reliability of the connection between the blade 220 and the cutter head 210 during cutting operations and avoiding the risk of loosening.

[0051] Figure 8 This is a side view of the structure of a cutting component provided in an embodiment of this application. Figure 9 This is a cross-sectional view of the structure of a cutting component provided in an embodiment of this application. (In conjunction with...) Figure 8 and Figure 9 As shown, in one possible embodiment, the screw 240 includes a screw shaft 242 and a screw head 241. The blade 220 is sleeved on the screw shaft 242 through a fixing hole, and the blade 220 can rotate around the screw shaft 242, that is, the blade 220 itself has a certain degree of rotation. The blade 220 can perform cutting operations relative to the grass on the lawn to be cut. The screw head 241 plays a certain axial limiting role. By allowing the blade 220 to rotate around the screw shaft 242, a certain connection between the blade 220 and the cutter head 210 is ensured, so that the blade 220 can rotate smoothly when cutting the grass on the lawn to be cut.

[0052] Combination Figure 8 and Figure 9As shown, in one possible implementation, the screw head 241 is located within the protective cavity 211 along the radial direction of the cutter head 210. That is, along the radial direction of the cutter head 210, the projection of the protective member 230 completely covers the projection of the screw head 241. The lowest point of the protective member 230 is P1, and the lowest point of the screw head 241 is P2. The horizontal plane where the lowest point P1 of the protective member 230 is located is lower than the horizontal plane where the lowest point P2 of the screw head 241 is located, meaning the screw head 241 can be completely accommodated within the protective cavity 211. Furthermore, the lowest point of the first protrusion 231 can also be lower than the lowest point P2 of the screw head 241, allowing the screw head 241 to be completely accommodated within the protective cavity 211, thus placing the screw head 241 in a protected position in space and providing a certain degree of protection for the screw head 241.

[0053] By placing the screw head 241 inside the protective cavity 211, when the cutting assembly 200 is performing a cutting operation, if the cutter head 210 encounters a hard obstacle such as a stone below it, the lower protective component 230 will preferentially contact and collide with the obstacle. This effectively avoids direct impact between the screw head 241 and the obstacle in physical space, preventing wear, deformation, or damage to the screw head 241 caused by impact, extending the service life of the connector 240, reducing maintenance costs, and further ensuring the continuity and safety of the cutting assembly 200 during cutting operations.

[0054] Figure 10 yes Figure 9 This is a partially enlarged cross-sectional view of a cutting assembly structure provided in an embodiment of this application. (Combined with...) Figure 9 and Figure 10 As shown, in one possible implementation, the blade 220 rotates about the central axis L2 of the screw head 241, and the central axis L2 of the screw head 241 and the central axis of the cutter head 210 form an angle α. Schematic, the central axis of the cutter head 210 is an axis perpendicular to the bottom surface of the cutter head 210. Figure 10 In this diagram, L1 is an axis parallel to the central axis of the cutter head 210, and L2 is the central axis of the screw head 241. There is an angle α between the central axes L2 and L2, meaning the central axis L2 of the screw head 241 and the central axis of the cutter head 210 form an angle α. This angle α can be between 0 and 90 degrees, and the blade 220 is tilted relative to the cutter head 210. When the blade 220 is tilted on the cutter head 210, when the blade 220 rotates to its outermost position on the cutter head 210, the tip of the blade 220 is at the lowest point of the entire rotation circumference, meaning the cutting height of the blade 220 is at the lowest point of the cutter head 210.

[0055] In one possible implementation, the blade 220 rotates around the central axis of the screw head 241, which is parallel to the central axis of the cutter head 210. Understandably, the blade 220 is horizontally positioned relative to the cutter head 210 at this time, and when the blade 220 is mounted on the cutter head 210, it achieves a certain horizontal cutting state. Furthermore, horizontal mounting of the blade 220 simplifies and simplifies the installation process.

[0056] Furthermore, by tilting the blade 220 onto the cutter head 210, when the cutting assembly 200 is performing a cutting operation, the blade 220 forms an oblique shear during the rotational cutting process due to its tilted installation. This reduces the contact area between the blade and the grass, increasing the pressure and effectively reducing cutting resistance and power consumption. At the same time, tilting the blade 220 onto the cutter head 210 also raises the installation position of the screw head 241 and the connector 240, making the overall position of the screw 240 higher than the cutting height. This greatly reduces the risk of weed entanglement and further avoids direct impact between the connector 240 and ground obstacles, thus balancing efficient cutting with high reliability.

[0057] In one possible implementation, the protective component 230 is detachably connected to the cutter head 210. The protective component 230 is detachable from the cutter head 210, meaning both the first protrusion 231 and the second protrusion 232 are detachable from the cutter head 210. During cutting operations, when the protective component 230 is damaged due to long-term wear or accidental impact, maintenance personnel do not need to replace the entire cutter head 210; they only need to remove and replace the protective component 230, reducing the difficulty of subsequent maintenance and improving the product's economic efficiency.

[0058] In one possible implementation, the first protrusion 231 and the second protrusion 232 can also be detachable. The first protrusion 231 is an independent protective block, and the second protrusion 232 is an annular or arc-shaped protective ring. The first protrusion 231 and the second protrusion 232 can be fixed together by screws, clips, or other detachable methods. The protective member 230 formed by fixing the first protrusion 231 and the second protrusion 232 together can be fixedly installed on the bottom surface 210b of the cutter head 210 by screws, clips, or other detachable methods.

[0059] By providing detachable first protrusion 231 and second protrusion 232, when the first protrusion 231 and second protrusion 232 are damaged due to long-term wear or accidental impact during cutting, it is not necessary to replace the entire cutter head 210 and protective part 230. Only the damaged individual protrusion needs to be removed and replaced, which effectively reduces the difficulty of later maintenance and the cost of parts replacement, improves the economic efficiency of the product, and at the same time maintains the original impact resistance and anti-stuck grass performance of the protective part 230.

[0060] In one possible implementation, the cutting component 200 is detachably mounted on the equipment body 100 and electrically connected to the equipment body 100. Illustratively, the cutting component 200 and the equipment body 100 can be electrically connected via conductive components, such as conductive cables and conductive connectors. The cutting component 200 can be connected to the equipment body 100 via a drive mechanism, which drives the cutting component 200 to rotate and cut the grass on the lawn to be treated. The detachable mounting of the cutting component 200 to the equipment body 100 facilitates maintenance, replacement, and cleaning of its various parts without disassembling the entire equipment body 100, and allows for separate transport of the cutting component 200 and the equipment body 100, improving transportation and installation convenience. Furthermore, it enables flexible switching between different cutting components 200; for example, the equipment body 100 can switch between different cutting components 200 according to different tasks, improving the flexibility of the lawn management equipment 1000's work switching and enriching its application scenarios. Of course, in some embodiments, the cutting component 200 may also be non-detachably connected to the device body 100, and this application embodiment does not make specific limitations.

[0061] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A cutting assembly for cutting grass on a lawn to be cut, characterized in that, include: Cutter head; The blades are at least two in number, and the at least two blades are arranged circumferentially on the side of the cutter head facing the grass to be worked. The cutter head is provided with a protective member, which is located between any two adjacent blades. A connector is provided, through which the blade is rotatably connected to the cutter head. Along the radial direction of the cutter head, the projection of the connector lies within the projection of the protective component.

2. The cutting assembly according to claim 1, characterized in that, The protective component and the cutter head together form at least two protective cavities, and the blade is located inside the protective cavity.

3. The cutting assembly according to claim 2, characterized in that, The protective component includes a first protrusion and a second protrusion, which together form a protective surface, which is an arc surface.

4. The cutting assembly according to claim 3, characterized in that, The number of the first protrusions is multiple, and the multiple first protrusions are arranged circumferentially around the second protrusion, and the second protrusion and the multiple first protrusions are connected to form a whole.

5. The cutting assembly according to claim 3, characterized in that, The second protrusion and the cutter head together form a groove, which is used to accommodate the first fixing hole of the cutter head. The first fixing hole is used to install the output shaft of the drive mechanism so that the drive mechanism drives the cutter head to rotate.

6. The cutting assembly according to claim 1, characterized in that, The connector includes a screw, the cutter head includes a second fixing hole, the blade includes a third fixing hole, and the screw is threaded into the second fixing hole and the third fixing hole in sequence.

7. The cutting assembly according to claim 6, characterized in that, The screw includes a screw shaft and a screw head, and the blade is used to rotate about the screw shaft to cut grass on the grass to be cut.

8. The cutting assembly according to claim 2, characterized in that, The connector includes a screw, which includes a screw shaft and a screw head, with the screw head located inside the protective cavity.

9. The cutting assembly according to any one of claims 6-8, characterized in that, The blade rotates about the central axis of the screw head, and the central axis of the screw head and the central axis of the cutter head form an angle, or the central axis of the screw head and the central axis of the cutter head are parallel.

10. The cutting assembly according to claim 1, characterized in that, The protective component is detachably connected to the cutter head.

11. A grassland operation device, characterized in that, It includes a device body and a cutting assembly as described in any one of claims 1-10, wherein the cutting assembly is disposed at the bottom of the device body.

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