An intelligent weeding device and method for landscaping

Abstract

The application relates to the field of lawn mowers, and particularly discloses an intelligent weeding device for landscaping, which comprises a cutting piece and a main shaft, the main shaft is rotatably installed on a moving vehicle, the cutting piece rotates under the autorotation of the main shaft, weeds in the sweeping radius of the cutting piece are cut, the cutting piece is provided with a comb piece below, the main shaft is divided into two parts, the two parts rotate independently, the cutting piece and the comb piece are fixedly connected with the two parts of the main shaft respectively, the comb piece rotates coaxially and in the same direction with the cutting piece, the rotating speed of the comb piece is smaller than that of the cutting piece, the comb piece rotates to hook the tips of a part of weeds above the cutting piece, and the cutting piece cuts the part of weeds. Through the differential cooperation of the comb piece and the cutting piece, the comb piece can effectively hook the tips of the weeds attached to the ground, so that the weeds are separated from the adsorption of mud or rainwater, the missed cutting is avoided, the capturing capacity of the laid weeds is remarkably improved, the landscaping weeding is ensured to be more thorough, and the contact area and friction force with the weeds attached to the ground are increased through the S-shaped comb tooth design of the comb piece.

Description

Technical Field

[0001] This invention relates to the field of lawnmower technology, and more particularly to an intelligent weeding device and weeding method for landscaping. Background Technology

[0002] A lawnmower is a mechanical tool specifically designed for trimming lawns and vegetation. Its core principle is to use high-speed rotating or reciprocating blades to cut the grass stems, keeping the lawn smooth and aesthetically pleasing. Based on power source, they are mainly divided into three categories: electric (wired and battery-powered), fuel-powered (gasoline engine), and manual (mechanical). Fuel-powered models are the most powerful and suitable for large-area operations, while electric models are lighter and more environmentally friendly. In addition to common push-type and self-propelled household models, there are also ride-on commercial lawnmowers, as well as multi-functional models that integrate mowing, shredding, and grass clipping collection. It is not only an essential tool for garden maintenance but is also widely used in professional landscaping settings such as parks and golf courses.

[0003] Existing lawn mowers use blades or cutting ropes to cut protruding weeds. For example, prior art publication CN121694114A discloses a solar-powered lawn care robot and its control method, which includes a base unit, including a base, two sets of wings disposed on the top of the base, and a head disposed on one side of the wings and fixedly connected to the base; and a mowing unit, including a rotating shaft fixedly connected to the bottom of the base, and a cutter blade and a cutting rope fixedly connected to the outer side of the end of the rotating shaft and distributed in a ring.

[0004] However, the existing technology has shortcomings: the rotating blades or mowing ropes can only cut protruding weeds, but in real-world scenarios, some weeds will stick to the ground under the influence of mud or rainwater and cannot be effectively cut. In addition, most lawnmowers cut weeds by rapidly rotating the mowing ropes or blades, but some weeds are more resilient and may not be cut by the above methods. Therefore, this problem needs to be optimized. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] This invention provides an intelligent weeding device and method for landscaping, which solves the problem in existing technologies where "some weeds lie flat on the ground under the influence of mud, water, or rain." The specific solution is as follows: On one hand, this invention provides an intelligent weeding device for landscaping, comprising a cutter and a main shaft. The main shaft is rotatably mounted on a mobile vehicle. The cutter rotates under the rotation of the main shaft, cutting weeds within its sweeping radius. A comb is located below the cutter. The main shaft is divided into two parts, which rotate independently. The cutter and comb are respectively fixed to the two parts of the main shaft. The comb rotates coaxially and in the same direction as the cutter, but at a lower speed than the cutter. A shear bar is fixed to one side of the comb, and the top surface of the shear bar is flush with the cutter. When the blades of the comb and the cutter overlap, the comb rotates and hooks the tips of some weeds above the cutter. When the comb hooks the weeds and they are between the blades of the shear bar and the cutter, the rapid rotation of the cutter and the slow rotation of the shear bar generate shearing force to cut off the tips of the weeds. Through the differential speed coordination between the comb and the cutter, the comb can effectively hook the tips of weeds attached to the ground, freeing them from the adhesion of mud or rainwater, avoiding missed cuts, significantly improving the capture ability of lodged weeds, and ensuring more thorough weeding in the garden.

[0007] Preferably, the comb and the cutter are evenly distributed around the main shaft, and the number of combs is greater than the number of cutters.

[0008] Preferably, the mobile vehicle includes a pusher, a mounting frame, and a splash guard, with the pusher fixed to one end of the mounting frame and the splash guard fixedly installed at the bottom of the mounting frame.

[0009] Preferably, the main shaft includes a fixed shaft, a cutting shaft, and a combing shaft. The combing shaft is rotatably mounted on the outer wall of the fixed shaft, the cutting shaft is rotatably mounted on the outer wall of the combing shaft, and the top of the fixed shaft is fixed to the moving vehicle.

[0010] Preferably, the cutter has an inclined angle, with one end of its blade lower than the other. The comb includes a comb shaft and comb teeth, with the comb teeth evenly distributed on the outer wall of the comb shaft. The comb teeth are S-shaped. The S-shaped comb tooth design of the comb increases the contact area and friction with the ground-hugging weeds, which can gently lift the weeds from the ground without damaging the roots. At the same time, it reduces the risk of weed entanglement, protects the soil structure, and is conducive to the long-term health of the garden ecology. The inclined blade structure of the cutter allows it to preferentially contact the tip of the hooked weeds during cutting, achieving precise cutting, reducing the probability of collision with the ground, extending the blade life, and reducing energy consumption, making weeding operations more economical and efficient.

[0011] Preferably, each end of the cutting shaft and the combing shaft is provided with a separate driving component, which can drive the cutting shaft and the combing shaft to rotate respectively, and the two driving components can make the rotational speed of the cutting shaft greater than that of the combing shaft.

[0012] Preferably, a small gear is fixed to the outer wall of the cutting shaft, a large gear is fixed to the outer wall of the combing shaft, a motor is installed above the combing shaft, the motor is fixed to the moving vehicle, and a first drive gear and a second drive gear are fixed to the bottom output shaft of the motor in sequence. The first drive gear meshes with the large gear, and the second drive gear meshes with the small gear, so that when the motor starts, it can drive the large gear and the small gear to rotate synchronously, and the speed of the large gear is less than the speed of the small gear.

[0013] Preferably, the mounting frame has two wheel frames at the bottom, with rollers installed at both ends of the two wheel frames. A telescopic rod is installed between the two wheel frames and the mounting frame. The height of the rollers can be adjusted by the telescopic rod of the moving vehicle. Combined with the design that the bottom of the comb is higher than the rollers, the comb can always stay close to the ground without penetrating the soil, adapting to weeds of different heights and undulating terrain, avoiding damage to the turf, and improving the versatility and safety of the device.

[0014] Preferably, the bottom of the roller is lower than the bottom of the comb. By setting the speed of the comb to be lower than that of the cutter, the weeds have enough time to be cut by the high-speed rotating cutter after being hooked up, avoiding the weeds from being thrown off due to excessive speed, thus improving the stability and reliability of cutting, and is especially suitable for weeding operations in wet or muddy environments.

[0015] On the other hand, the present invention provides an intelligent weeding method for landscaping, comprising the following steps: S1. Drive the main shaft to rotate, so that the two parts of the main shaft drive the cutter and the comb to rotate in the same direction on the same axis, and the speed of the comb is less than the speed of the cutter. S2. By rotating the comb, the tips of some weeds are hooked up and brought above the cutter. S3. Position the hooked weeds between the shear bar, which is relatively fixed on one side of the comb, and the blade of the cutter. S4. By utilizing the speed difference between the cutting and combing parts, the blades of the cutting part and the shearing rod will move relative to each other, thereby cutting off the tips of the weeds.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. This invention utilizes the differential speed coordination between the comb and the cutter. The comb can effectively hook up the tips of weeds attached to the ground, freeing them from the adsorption of mud or rainwater, thus avoiding missed cuts and significantly improving the capture ability of lodged weeds, ensuring more thorough weeding in the garden.

[0017] 2. This invention generates shear force through the combined action of shear bars and cutting components. Therefore, when encountering some tough weeds, the shear force can effectively cut these weeds.

[0018] 3. By setting the rotation speed of the comb to be lower than that of the cutter, the weeds have enough time to be cut by the high-speed rotating cutter after being hooked up, avoiding the weeds from being thrown off due to excessive rotation speed, thus improving the stability and reliability of cutting, and is especially suitable for weeding operations in wet or muddy environments.

[0019] 4. The present invention increases the contact area and friction with the ground-hugging weeds through the S-shaped comb design of the comb, which can gently lift the weeds from the ground without damaging the roots, while reducing the risk of weed entanglement, protecting the soil structure, and contributing to the long-term health of the garden ecology.

[0020] 5. The present invention uses the inclined blade structure of the cutting piece to make it first contact the tip of the hooked weeds during cutting, so as to achieve precise cutting, reduce the probability of collision with the ground, extend the blade life, and reduce energy consumption, making weeding operations more economical and efficient.

[0021] 6. The present invention allows the height of the rollers to be adjusted by the telescopic rod of the mobile vehicle. Combined with the design that the bottom of the comb is higher than the rollers, the comb can always stay close to the ground without penetrating the soil, adapting to weeds of different heights and undulating terrain, avoiding damage to the turf, and improving the versatility and safety of the device.

[0022] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a perspective view of the entire invention; Figure 2 This is a front view of the present invention; Figure 3 This is a perspective view of the cutting component, comb component, and main shaft of the present invention; Figure 4 This is a perspective view of the present invention with the protective cover removed; Figure 5 A perspective view of the present invention without the pusher; Figure 6 This is a perspective view of the motor and cutting component of the present invention; Figure 7 This is a cross-sectional view of the main shaft of the present invention; Figure 8 This is an exploded view of the main axis of the present invention; Figure 9 This is a schematic diagram of the installation of the splash guard of the present invention; Figure 10 This is a perspective view of the comb component of the present invention; Figure 11 This is a schematic diagram of the cutting state of weeds by the comb and cutter of the present invention; Figure 12 This is a partial structural diagram of the comb and cutter of the present invention.

[0024] The accompanying figure is labeled as follows: 1. Cutting part; 2. Main shaft; 3. Moving carriage; 4. Comb; 5. Pusher; 6. Mounting frame; 7. Splash guard; 8. Wheel frame; 9. Roller; 10. Telescopic rod; 11. Fixed shaft; 12. Cutting shaft; 13. Comb shaft; 14. Comb shaft; 15. Comb teeth; 16. Pinion; 17. Gear; 18. Motor; 19. First drive gear; 20. Second drive gear; 21. Protective cover; 22. Shear bar. Detailed Implementation

[0025] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0026] Example 1: As Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides an intelligent weeding device for landscaping, including a cutter 1 and a main shaft 2. The main shaft 2 is rotatably mounted on a mobile vehicle 3. The cutter 1 rotates under the rotation of the main shaft 2 to cut weeds within the sweeping radius of the cutter 1. Below the cutter 1 is a comb 4. The main shaft 2 is divided into two parts, which rotate independently. The cutter 1 and the comb 4 are respectively fixed to the two parts of the main shaft 2. The comb 4 rotates coaxially and in the same direction as the cutter 1. The rotation speed of the comb 4 is less than that of the cutter 1. The rotation of the comb 4 hooks the tips of a portion of the weeds to the top of the cutter 1, and the cutter 1 cuts the portion of the weeds.

[0027] It should be noted that "the comb 4 rotates to hook the tips of some weeds above the cutter 1" means that the comb 4 cannot completely hook out the weeds that are lying flat on the ground, but the comb 4 can hook out at least some of the weeds, so that most of the weeds can be cut.

[0028] like Figure 3 As shown, the comb 4 and the cutter 1 are evenly distributed around the main shaft 2, and the number of comb 4 is greater than the number of cutter 1, so that when the comb 4 rotates slowly, it can continuously hook up the weeds.

[0029] As an alternative, the number of cutting pieces 1 can be greater than the number of comb pieces 4, so that when the cutting pieces 1 rotate rapidly, the tips of the weeds hooked by the comb pieces can be cut off quickly, thus improving cutting efficiency.

[0030] like Figure 4 As shown, the mobile vehicle 3 includes a pusher 5, a mounting frame 6, and a splash guard 7. The pusher 5 is fixed to one end of the mounting frame 6, and the splash guard 7 is fixed to the bottom of the mounting frame 6 by bolts.

[0031] The splash guard 7 is a semi-enclosed arc-shaped shell made of metal or high-strength plastic. Its inner wall is smooth and coated with a low-friction coating. The bottom opening of the splash guard 7 is funnel-shaped, covering the front and left and right sides of the cutter 1 and the comb 4. A grass discharge port is left at the rear. When the cutter 1 rotates at high speed, the cut grass hits the inner wall of the splash guard 7 under the action of centrifugal force and slides along the arc surface to the grass discharge port at the rear, avoiding accumulation inside the guard.

[0032] like Figure 5 As shown, there are two wheel frames 8 below the mounting frame 6. Rollers 9 are installed at both ends of the two wheel frames 8. A telescopic rod 10 is installed between the two wheel frames 8 and the mounting frame 6. The telescopic rod 10 drives the wheel frames 8 and rollers 9 to move up and down, thereby adjusting the height of the rollers 9, so as to cut weeds of different heights.

[0033] like Figure 2 As shown, the bottom of roller 9 is lower than the bottom of comb 4.

[0034] like Figure 3 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the main shaft 2 includes a fixed shaft 11, a cutting shaft 12, and a combing shaft 13. The combing shaft 13 is rotatably mounted on the outer wall of the fixed shaft 11, and the cutting shaft 12 is rotatably mounted on the outer wall of the combing shaft 13. The top of the fixed shaft 11 is fixed to the moving vehicle 3, specifically to the top of the splash guard 7.

[0035] like Figure 3 As shown, the cutter 1 has an inclined angle, with one end of its blade lower than the other end of the cutter 1. The comb 4 includes a comb shaft 14 and comb teeth 15. The comb teeth 15 are linearly and evenly distributed on the outer wall of the comb teeth 14. The shape of the comb teeth 15 is S-shaped. The S-shaped comb teeth 15 can make it easier to hook up weeds attached to the ground.

[0036] The S-shaped comb teeth 15 have a circular or flattened oval cross-section, and their curvature forms a "low-to-high" trajectory during rotation. When the comb teeth 15 rotate to the lowest point, their front end is close to the ground and slightly inserted into the weeds; as rotation continues, the middle section of the S-shape gradually rises, lifting the stems and leaves of the weeds upwards along the curvature; when it reaches near the highest point, the end of the comb teeth 15 completely delivers the tips of the weeds to the height of the cutter 1. The two reverse curves of the S-shape can apply an upward component force to the fallen weeds in different directions, effectively hooking them up regardless of whether the weeds are falling to the left or right.

[0037] like Figure 8 As shown, each end of the cutting shaft 12 and the combing shaft 13 is provided with a separate driving component. The driving components can drive the cutting shaft 12 and the combing shaft 13 to rotate, and the two driving components can make the rotational speed of the cutting shaft 12 greater than the rotational speed of the combing shaft 13.

[0038] In the above scheme, the driving components of the cutting shaft 12 and the comb shaft 13 are configured as follows: A small gear 16 is fixed to the outer wall of the cutting shaft 12, and a large gear 17 is fixed to the outer wall of the comb shaft 13. A motor 18 is installed above the comb shaft 13 and is fixed to the moving carriage 3. A first drive gear 19 and a second drive gear 20 are fixed to the bottom output shaft of the motor 18 in sequence. The first drive gear 19 meshes with the large gear 17, and the second drive gear 20 meshes with the small gear 16. When the motor 18 starts, it can drive the large gear 17 and the small gear 16 to rotate synchronously. The speed of the large gear 17 is less than the speed of the small gear 16, so that the speed of the comb shaft 13 is less than the speed of the cutting shaft 12, thereby making the speed of the cutting piece 1 greater than the speed of the comb 4.

[0039] like Figure 1 As shown, a protective cover 21 is also installed on the mounting bracket 6.

[0040] In the above scheme, the start motor 18 drives the first drive gear 19 and the second drive gear 20 to rotate synchronously. The first drive gear 19 meshes with the large gear 17, driving the comb shaft 13 to rotate slowly; the second drive gear 20 meshes with the small gear 16, driving the cutter shaft 12 to rotate quickly. The comb shaft 13 drives the comb 4 to rotate slowly in the same direction. The S-shaped comb teeth 15 of the comb 4 hook up the tips of the weeds attached to the ground and lift them into the rotation plane of the cutter 1. At the same time, the cutter shaft 12 drives the cutter 1 to rotate quickly, and the inclined blade of the cutter 1 cuts the hooked weeds. The top of the fixed shaft 11 is fixed to the splash guard 7, providing support for the entire rotating system. The operator pushes the mobile cart 3 with the push handle 5. The mounting frame 6 of the mobile cart 3 is equipped with a wheel frame 8 and rollers 9. The height of the rollers 9 is adjusted by the telescopic rod 10 so that the bottom of the comb 4 is slightly higher than the bottom of the rollers 9, preventing the comb teeth 15 from inserting into the soil. The splash guard 7 blocks grass clippings from flying during cutting. The comb 4 has more components than the cutter 1, ensuring continuous hooking of weeds during slow rotation; the cutter 1 rotates rapidly for efficient cutting. Throughout the process, the comb 4 and cutter 1 rotate coaxially and in the same direction at different speeds, working together to clear weeds close to the ground.

[0041] like Figure 10 , Figure 11 , Figure 12 As shown, a shear bar 22 is fixedly connected to one side of the comb 4 (specifically, one end of the shear bar 22 is fixedly connected to the outer wall of the comb shaft 13). The top surface of the shear bar 22 roughly coincides with the blade of the cutter 1. Thus, when the comb 4 hooks up the weeds, the tips of the weeds can be cut off by the shearing force of the cutter 1 and the shear bar 22, thereby improving the trimming efficiency.

[0042] Example 2: The technical solution of this example differs from that of Example 1 in that this example provides an intelligent weeding method for landscaping: S1. The operator holds the push handle 5 and pushes the mobile vehicle 3, which moves on the ground using the rollers 9. Before starting the weeding operation, the height of the wheel frame 8 can be adjusted by the telescopic rod 10, thereby changing the relative position of the rollers 9 and the mounting frame 6, so that the bottom of the comb 4 is always higher than the bottom of the rollers 9, ensuring that the comb 4 can be close to the ground but not inserted into the soil, adapting to weeds of different heights and terrain undulations.

[0043] S2. Start motor 18. The bottom output shaft of motor 18 simultaneously drives the first drive gear 19 and the second drive gear 20 to rotate. The first drive gear 19 meshes with the large gear 17, which is fixed to the outer wall of the comb shaft 13, thus driving the comb shaft 13 to rotate. The second drive gear 20 meshes with the small gear 16, which is fixed to the outer wall of the cutting shaft 12, thus driving the cutting shaft 12 to rotate as well. Since the large gear 17 has more teeth than the small gear 16, when the motor 18 rotates at a constant speed, the speed of the large gear 17 is less than the speed of the small gear 16, thereby causing the speed of the comb shaft 13 to be lower than the speed of the cutting shaft 12.

[0044] S3. The comb shaft 13 is fixedly connected to the comb 4. The comb 4 includes a comb shaft 14 and comb teeth 15. The comb teeth 15 are S-shaped and linearly and evenly distributed on the outer wall of the comb shaft 14. The comb shaft 13 drives the comb 4 to rotate in the same direction at a low speed. During the rotation, the S-shaped comb teeth 15 insert into the weeds and can gently hook up the tips of the weeds that are attached to the ground, especially those that have been soaked in mud or rainwater, so that they are lifted off the ground and into the rotation plane of the cutter 1.

[0045] S4. The cutting shaft 12 is fixedly connected to the cutting piece 1. The cutting piece 1 has an inclined angle, with one end of its blade lower than the other. The cutting shaft 12 drives the cutting piece 1 to rotate in the same direction at a relatively high speed. Because the comb 4 rotates at a slower speed, the hooked weeds have enough time to remain within the cutting area of ​​the cutting piece 1; while the cutting piece 1 rotates at a faster speed, its inclined blade can quickly and accurately cut the tips of the weeds, completing the cutting action. The number of combs 4 is greater than the number of cutting pieces 1, making the distribution of the comb teeth 15 denser when rotating at slow speed, continuously hooking up new weeds and avoiding missed cuts.

[0046] S5. The main shaft 2 consists of a fixed shaft 11, a cutting shaft 12, and a combing shaft 13. The top of the fixed shaft 11 is fixed to the top of the splash guard 7 of the moving vehicle 3, keeping it stationary. The combing shaft 13 is rotatably mounted on the outer wall of the fixed shaft 11, and the cutting shaft 12 is rotatably mounted on the outer wall of the combing shaft 13. The three form a concentric multi-layer shaft structure, realizing the coaxial independent rotation of the cutting part 1 and the combing part 4 without interference.

[0047] S6. The entire cutting process takes place inside the splash guard 7, which is bolted to the bottom of the mounting frame 6. This effectively blocks grass clippings and mud splashed out by the cutter 1, protecting the operator and maintaining a clean environment. Through the aforementioned differential speed coordination, the comb 4 is responsible for hooking up the weeds close to the ground, while the cutter 1 is responsible for high-speed cutting. The two are coaxial and in the same direction but rotate at different speeds, thus solving the technical problem of effectively cutting weeds that lie close to the ground.

[0048] In summary, this invention utilizes a coaxial differential rotation design between the comb 4 and the cutter 1. The comb 4 rotates stably at a lower speed, and its S-shaped comb teeth 15 gently and effectively hook up the tips of weeds that are originally attached to the ground due to mud or rainwater, causing the weeds to detach from the ground's adhesion and rise to a certain height. At the same time, the cutter 1 rotates in the same direction at a higher speed, creating a stable speed difference between the two. Because the comb 4 rotates slowly, the weeds, after being hooked up, will not be thrown off due to excessive speed but will remain briefly within the cutting path of the cutter 1. The high rotation speed of the cutting component 1 allows for timely cutting of these weeds. This combination significantly improves the capture ability of lodged and ground-hugging weeds, avoiding the missed cutting caused by the blades' inability to reach ground-hugging weeds in traditional mowing devices. This makes garden weeding more thorough, especially suitable for garden environments after rain or in high humidity. The lower rotation speed of the comb component 4 compared to the cutting component 1 creates a "slow hook, fast cut" working rhythm. After the comb component 4 hooks up the tips of the weeds, it takes a certain amount of time for the weeds to fully enter the cutting component 1. The cutting area is precisely controlled. If both the rotation speeds are the same or the comb 4 rotates too fast, the weeds may be thrown out by centrifugal force before being cut, resulting in cutting failure. In this device, the slow rotation of the comb 4 ensures that there is a sufficient time window between the weeds being hooked, lifted, and cut, while the high-speed rotation of the cutter 1 ensures that the weeds are quickly cut once they enter the cutting area. This combination greatly improves the stability and reliability of the cutting process, and is especially suitable for weeds that grow close to the ground in wet and muddy environments, such as goosegrass and bermudagrass. Even if some weeds are not cut in one go... The slowly rotating comb 4 will attempt to lift the weeds again during subsequent rotations, reducing the number of repetitive operations and improving work efficiency. By designing the comb teeth 15 of the comb 4 into an S-shape, this geometry has unique working advantages. The S-shaped curved surface can contact the weeds from multiple directions during rotation: when the comb teeth 15 rotate to the lowest point, its front end is close to the ground, bringing the stems and leaves of the weeds close to the ground into the inner side of the curved surface; as it continues to rotate, the middle section of the S-shape gradually lifts the weeds upward, allowing the weeds to slide naturally along the curved direction, avoiding pulling and tugging.When reaching near the highest point, the end of the comb teeth 15 smoothly delivers the tip of the weed to the cutting height of the cutter 1. Because the S-shape has two opposing curves, it can effectively hook up weeds regardless of whether they are leaning to the left or right, significantly better than straight or L-shaped teeth. Simultaneously, this gentle lifting action is less likely to damage the grass roots, protecting the soil structure and promoting rapid recovery of lawns or garden vegetation. Furthermore, the smooth surface of the S-shape prevents weeds from easily tangling on the comb teeth 15, reducing the frequency of downtime for cleaning, extending continuous operation time, and contributing to the long-term healthy maintenance of the garden ecosystem. By setting the cutter 1 at an angle, with its blade end lower than the other end, this... The inclined structure offers multiple advantages during cutting. First, when the comb 4 brings the tip of the weed to the height of the cutter 1, the inclined blade tip contacts the weed first, and with a smaller contact area, it can cut into the weed stem with lower cutting resistance, achieving precise severance. Second, because the blade tip is lower than the other end, only the blade tip approaches the hooked weed during the rotation of the cutter 1, while the rest of the blade remains in a higher position. This effectively reduces the probability of the blade colliding with the ground, stones, or hard objects, greatly extending the service life of the cutter 1 and reducing the risk of chipping or deformation due to collisions. Third, lower cutting resistance means... The reduced torque required to drive the cutter 1 results in lower energy consumption for the motor 18, making the machine more economical and efficient. Simultaneously, the tilting blades generate an upward airflow during high-speed rotation, helping to blow freshly cut grass clippings away from the cutting area and preventing secondary cutting. Two wheel frames 8 are installed below the mounting frame 6 of the mobile carriage 3, each with rollers 9 at both ends. A telescopic rod 10 connects the wheel frames 8 to the mounting frame 6, allowing independent up-and-down movement of the wheel frames 8 and rollers 9, thus flexibly adjusting the height of the rollers 9. This adjustment mechanism ensures that the bottom of the comb 4 is always higher than the rollers 9. The bottom of the device is adjusted, and the height difference between the two can be adjusted according to the actual ground conditions. When encountering uneven garden terrain, the operator can adjust the different heights of the front and rear wheel frames 8 to keep the moving vehicle 3 stable, while ensuring that the comb 4 is close to but does not penetrate the soil. When the height of the weeds changes, the rollers 9 can also be raised or lowered as a whole to keep the comb 4 at the optimal weed-hooking height. This design effectively avoids the comb teeth 15 from penetrating the soil, causing increased resistance or damage to the turf, and also prevents the comb teeth 15 from hitting stones and being damaged. Therefore, this device can adapt to garden environments of different heights and terrains, and has high versatility and safety.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0051] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism. It allows for situations where the parallelism is not absolute due to factors such as assembly tolerance, design tolerance, and structural flatness. It also allows for errors within a small angular range, such as within 10 degrees of assembly error. These can all be considered as parallel relationships.

[0052] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0053] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone.

[0054] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0055] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An intelligent weeding device for landscaping, comprising a cutter and a main shaft, the main shaft being rotatably mounted on a mobile vehicle, the cutter rotating under the rotation of the main shaft to cut weeds within its sweeping radius, characterized in that: Below the cutter is a comb. The main shaft is divided into two parts, which rotate independently. The cutter and comb are fixed to the two parts of the main shaft respectively. The comb rotates in the same direction as the cutter, but the speed of the comb is less than that of the cutter. A shear bar is fixed on one side of the comb. The top surface of the shear bar coincides with the blade of the cutter. When the comb rotates, it hooks the tips of some weeds to the top of the cutter. When the comb hooks the weeds and the weeds are between the blade of the shear bar and the blade of the cutter, the shearing force generated by the rapid rotation of the cutter and the slow rotation of the shear bar cuts off the tips of the weeds.

2. The intelligent weeding device for landscaping as described in claim 1, characterized in that: The combs and cutters are evenly distributed around the spindle, and the number of combs is greater than the number of cutters.

3. The intelligent weeding device for landscaping as described in claim 1, characterized in that: The mobile cart includes a pusher, a mounting frame, and a splash guard. The pusher is fixed to one end of the mounting frame, and the splash guard is fixedly installed at the bottom of the mounting frame.

4. The intelligent weeding device for landscaping as described in claim 1, characterized in that: The main shaft includes a fixed shaft, a cutting shaft, and a combing shaft. The combing shaft is rotatably mounted on the outer wall of the fixed shaft, the cutting shaft is rotatably mounted on the outer wall of the combing shaft, and the top of the fixed shaft is fixed to the moving vehicle.

5. The intelligent weeding device for landscaping as described in claim 1, characterized in that: The cutting component has an inclined angle, with one end of its blade lower than the other end. The comb component includes a comb shaft and comb teeth. The comb teeth are evenly distributed on the outer wall of the comb shaft, and the shape of the comb teeth is S-shaped.

6. The intelligent weeding device for landscaping as described in claim 1, characterized in that: Each end of the cutting shaft and the combing shaft is equipped with a separate drive unit. The drive unit can drive the cutting shaft and the combing shaft to rotate respectively, and the two drive units can make the rotational speed of the cutting shaft greater than that of the combing shaft.

7. The intelligent weeding device for landscaping as described in claim 6, characterized in that: A small gear is fixed to the outer wall of the cutting shaft, and a large gear is fixed to the outer wall of the combing shaft. A motor is installed above the combing shaft and is fixed to the moving vehicle. A first drive gear and a second drive gear are fixed to the bottom output shaft of the motor in sequence. The first drive gear meshes with the large gear, and the second drive gear meshes with the small gear, so that when the motor starts, it can drive the large gear and the small gear to rotate synchronously, and the speed of the large gear is less than the speed of the small gear.

8. The intelligent weeding device for landscaping as described in claim 3, characterized in that: The mounting frame has two wheel frames at the bottom, each with a roller at both ends, and a telescopic rod is installed between the two wheel frames and the mounting frame.

9. The intelligent weeding device for landscaping as described in claim 9, characterized in that: The bottom of the roller is lower than the bottom of the comb.

10. A smart weeding method for landscaping, characterized in that, The intelligent weeding device for landscaping as described in any one of claims 1-9 includes the following steps: S1. Drive the main shaft to rotate, so that the two parts of the main shaft drive the cutter and the comb to rotate in the same direction on the same axis, and the speed of the comb is less than the speed of the cutter. S2. By rotating the comb, the tips of some weeds are hooked up and brought above the cutter. S3. Position the hooked weeds between the shear bar, which is relatively fixed on one side of the comb, and the blade of the cutter. S4. By utilizing the speed difference between the cutting and combing parts, the blades of the cutting part and the shearing rod will move relative to each other, thereby cutting off the tips of the weeds.

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