An anti-tangling cutting component and lawn mowing platform

Abstract

This invention belongs to the field of garden tool technology, specifically relating to an anti-tangling cutting component and mowing platform, including a mounting base, a drive mechanism, and a cutter head assembly. The mounting base has at least one raised edge at its bottom. The drive mechanism includes a main body and a mounting boss fixed to the output end of the main body's output shaft. The main body is mounted on the upper surface of the mounting base, and the output shaft passes through the bottom of the mounting base, such that at least a portion of the output shaft and the mounting boss is located within the raised edge. The cutter head assembly includes a limiting member, a fixed cutter head, and a cutting blade. The limiting member includes a fixing part, a connecting part, and a limiting part connected in sequence. For complex working conditions, this application provides a layered cross-protection structure cutter head, effectively improving the working efficiency of the cutting cutter head under complex conditions.

Description

Technical Field

[0001] This invention belongs to the field of garden tool technology, specifically relating to an anti-tangling cutting component and a mowing platform. Background Technology

[0002] With the development of garden tools, lawnmowers, as efficient lawn maintenance equipment, are widely used in both home and commercial settings. However, in actual operation, lawnmower blades are prone to jamming when they hit hard objects such as rocks and tree roots during high-speed rotation. At this time, the blades are subjected to a reverse impact force, which is transmitted through the blades to the output shaft assembly and even further to the power supply device (such as the motor). This can cause deformation or breakage of the output shaft, or damage to critical components such as gears and bearings inside the motor, seriously affecting the lifespan and safety of the equipment.

[0003] To address this, Chinese utility model patent CN220965616U discloses a blade fixing structure and a lawnmower, including a connector connected to the motor output shaft assembly of the lawnmower; at least one blade fixedly connected to the connector; wherein, the connector has a boss, and the blade is fitted with the boss for fixing; the connector and the motor output shaft assembly are connected by an interference fit. This solution, by providing a boss on the connector for blade fitting and using an interference fit between the connector and the motor output shaft assembly, allows the connector to rotate relative to the motor output shaft when the blade is impacted, thereby buffering the impact force and reducing damage to the motor and output shaft.

[0004] For example, the applicant's prior application CN119117149B mentions a cutting disc, including a bending disc and a blade. The bending disc has a first through hole, and the blade has a second through hole that mates with the first through hole. The bending disc and the blade are connected by a bolt (preferably a through bolt). The bolt contracts twice from head to end toward the bolt's central axis, forming a first step and a second step respectively. When the bolt is passed through the second through hole and the first through hole in sequence, the blade and the bending disc are located on the first step and the second step respectively, such that when the resistance experienced by the blade is less than or equal to a first force, the blade and the bending disc rotate synchronously. When the resistance experienced by the blade is greater than the first force, the blade can rotate relative to the bending disc, thereby avoiding hard objects.

[0005] While the above solutions alleviate the problem of easy damage when hitting hard objects to some extent, in complex terrain, when cutting tall grass, long grass or vines, the grass stalks are prone to getting tangled in the blade shaft, causing the blade shaft to jam, or even causing the mounting bolts to loosen and the blades to fall off, which affects work efficiency and brings safety hazards.

[0006] Therefore, a more reliable and durable blade fixing structure and lawnmower design is needed to improve its impact resistance and anti-tangling ability under complex working conditions. Summary of the Invention

[0007] The purpose of this invention is to provide an anti-tangling cutting component and a mowing platform to improve the working efficiency of lawnmowers under complex working conditions.

[0008] To solve the aforementioned technical problems, the present invention specifically adopts the following technical solution:

[0009] An anti-tangling cutting assembly includes: a mounting base, a drive mechanism, and a cutter head assembly;

[0010] The bottom of the mounting base is provided with at least one protruding edge;

[0011] The drive mechanism includes a main body and a mounting portion fixed to the output end of the output shaft of the main body. The main body is mounted on the upper surface of the mounting base, and the output shaft passes through the bottom of the mounting base.

[0012] The cutter head assembly is provided with a grass-blocking slope with a certain inclination, so that the cutter head assembly has an open third protective space with an inner diameter that gradually increases from top to bottom. The top of the third protective space is provided with a third mounting hole, and the mounting part is fixed in the third mounting hole. The grass-blocking slope, the protruding edge and the bottom of the mounting base together form a closed second protective space. At least a part of the output shaft (4015) is located in the second protective space.

[0013] As an improvement, a locking element and a fastener are also included. The first end of the locking element is fixed to the mounting portion, and the fastener is fixed to the second end of the locking element. The fastener and the bottom of the output shaft cooperate to form a clamping structure for simultaneously clamping the mounting portion and the cutter head assembly, so as to axially limit the cutter head assembly.

[0014] As an improvement, the protruding edge includes an outer protruding edge and an inner protruding edge arranged sequentially from the outside to the inside at the bottom of the mounting base, the height of the outer protruding edge being higher than the height of the inner protruding edge; the inner protruding edge, the bottom of the mounting base, and the top of the cutter head assembly together form a closed first protective space; the grass-blocking slope, the outer protruding edge, the inner protruding edge, and the bottom of the mounting base enclose and form a second protective space.

[0015] As an improvement, a locking spacer is also included, the top of which is clamped between the mounting portion and the fastener, and extends downward to form an open fourth protective space located inside the third protective space, the fastener being located within the fourth protective space.

[0016] As an improvement, the obtuse angle between the grass-blocking slope and the horizontal plane is in the range of 120°-150°.

[0017] As an improvement, the cutter head assembly is also provided with a second mounting hole. When the fixing member is passed through the second mounting hole and the mounting base in sequence, the cutter head assembly and the mounting base can be fixed relative to each other.

[0018] As an improvement, the cutter head assembly includes a limiting member, a fixed cutter head, and a cutting blade. The limiting member includes a fixing part, a connecting part, and a limiting part connected in sequence. The fixed cutter head is provided with a first mounting hole, and the cutting blade is provided with a fourth mounting hole. When the limiting member is passed through the fourth mounting hole and the first mounting hole in sequence, the first mounting hole is sleeved on the outside of the fixed part, and the fourth mounting hole is sleeved on the outside of the connecting part and limited between the fixed cutter head and the limiting part. The height of the connecting part is greater than the height of the cutting blade. When the output shaft is driven to rotate, the output shaft can drive the fixed cutter head and the cutting blade to rotate synchronously. When the cutting blade encounters an obstacle, the cutting blade can rotate relative to the fixed cutter head to achieve buffering.

[0019] As an improvement, the first mounting hole is an irregularly shaped mounting hole, and the fixing part is an irregularly shaped fixing part that matches the shape of the first mounting hole.

[0020] As an improvement, a protective sleeve is also included, which has an irregularly shaped hole with the same shape as the first mounting hole, forming a fifth protective space that wraps around the fixing part.

[0021] As an improvement, the device includes a cutting platform and at least one cutting assembly mounted on the bottom of the cutting platform. A guide ring is circumferentially arranged around the cutting assembly, extending towards one side of the cutting platform to form a grass outlet. The cutting assembly includes a mounting base, a drive mechanism, and a blade assembly. At least one raised edge is provided at the bottom of the mounting base. The drive mechanism includes a main body and a mounting portion fixed to the output end of the main body's output shaft. The main body is mounted on the upper surface of the mounting base, and the output shaft passes through the bottom of the mounting base. The blade assembly has a grass-blocking slope with a certain inclination, creating an open third protective space with an gradually increasing inner diameter from top to bottom. A third mounting hole is provided at the top of the third protective space, and the mounting portion is fixed within the third mounting hole. The grass-blocking slope, the raised edge, and the bottom of the mounting base together form a closed second protective space, with at least a portion of the output shaft located within the second protective space.

[0022] The principle and beneficial technical effects of this invention are as follows:

[0023] In response to complex working conditions (such as tall grass, long grass, and especially vine grass), where grass stalks are prone to getting tangled in the cutting blade shaft, this application provides a layered cross-protection structure design with a reinforced structure, so that the cutting components can remain firmly connected even under long-term unobstructed operation.

[0024] Firstly, this application features overlapping protective spaces above and below the cutter head assembly. The output shaft is enclosed within a second, closed protective space, while the connection between the mounting section and the cutter head assembly is protected by an open third protective space. When a small amount of weeds enters the third protective space, its open structure, combined with the centrifugal force generated by the cutter head rotation and the weeds' own gravity, allows for instantaneous removal. The closed second protective space minimizes or blocks the path of long weeds winding upwards around the output shaft, preventing long weeds (especially vines) from simultaneously entangled on the output shaft and fasteners. Furthermore, the open third protective space's "visual" structure not only allows for real-time observation of the operating conditions but also allows tools to directly access the fasteners, effectively reducing the difficulty of equipment maintenance.

[0025] Furthermore, the angle design of the weed-blocking ramp is dynamically matched with the rotation speed of the cutter head, so that the debris gains tangential acceleration after contacting the ramp, further enhancing the throwing efficiency, especially addressing the adhesion problem of highly resilient vine-like weeds.

[0026] Furthermore, the four protective spaces located on both sides of the fixed cutter head provide multi-dimensional protection for the output shaft and fasteners at different heights (for example, the lower half of the first protective space overlaps with the upper half of the second protective space, or the lower half of the second protective space overlaps with the upper half of the third protective space). The structure is compact, and the overlapping area of ​​the four protective spaces forms a "maze-like seal" effect. Even if high-density grass clippings break through the outer protection and enter the second or third protective space, they will stall and settle due to the sudden change in the direction of the centrifugal force field in the intersecting space, making it difficult for them to reach the output shaft sealing area (i.e., the first protective space).

[0027] Furthermore, this application reinforces the connection points (e.g., by clamping the fixed cutter head with a clamping structure, and by connecting the fixed cutter head and the cutting blade with a limiting member having an irregularly shaped fixing part). On the one hand, this avoids the problem of loosening of the connection points due to excessive resistance to the cutting blade caused by obstacles. On the other hand, it ensures that the untangled cutter head remains stably connected even under long-term unobstructed operation.

[0028] In summary, the layered cross protection structure in this application can prevent long grass from entering the output shaft without being cut during the cutting process, and prevent it from simultaneously wrapping around the output shaft located above the cutter head assembly and the fasteners located below the cutter head assembly, thereby affecting the rotation of the output shaft or causing the two to rotate relative to each other. It is especially suitable for situations where the blade can rotate relative to the cutter head (when the blade rotates, it is particularly easy to bring long grass into the central area where the output shaft is located). Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the lawn mowing platform in an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of the cutting component in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the cutter head assembly in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the fixed cutter head in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the limiting member in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the protective sleeve in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the cutting blade in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the driving mechanism in an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the anti-loosening component in an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the anti-loosening spacer in an embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the mounting base in an embodiment of the present invention;

[0041] Figure 12 This is a partial cross-sectional view of the cutting component in an embodiment of the present invention;

[0042] Figure 13 This is a schematic diagram of the structure of the fastener in an embodiment of the present invention;

[0043] Figure 14 This is a schematic diagram of the angled cutting blade in an embodiment of the present invention.

[0044] Markings in the diagram: 1. Rear protective assembly; 2. Cutting platform; 3. Side protective assembly; 4. Cutting assembly; 5. Front protective assembly; 201. Guide ring; 401. Drive mechanism; 402. Mounting base; 403. Cutter head assembly; 404. Fixing component; 405. Anti-loosening spacer; 406. Anti-loosening component; 407. Fastener; 4011. Limiting slot; 4012. Anti-loosening hole; 4013. Mounting part; 4014. Locking component; 40 15. Output shaft; 4016. Main body; 40301. Fixed cutter head; 4021. Outer protruding edge; 4022. Inner protruding edge; 40302. Cutting blade; 40303. Protective sleeve; 40304. Limiting component; 403011. First mounting hole; 403012. Second mounting hole; 403013. Third mounting hole; 403014. Limiting tooth; 403015. Grass-blocking slope; 403016. Folded edge of the cutter head; 403021, Fourth mounting hole; 403022, Cutting blade; 403031, Fifth mounting hole; 403032, Protective edge; 403041, Connecting part; 403042, Fixing part; 403043, Limiting part; 40401, Button; 40402, Limiting section; 40403, Locking mating section; 40404, Locking bead; 408, First protective space; 409, Second protective space; 410, Fifth protective space; 411, Fourth protective space; 412, Third protective space. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0046] In this document, suffixes such as "module," "component," or "unit" used to denote elements are used solely for the purpose of illustrative purposes and have no specific meaning in themselves. Therefore, "module," "component," or "unit" may be used interchangeably. In this document, terms such as "upper," "lower," "inner," "outer," "front," "rear," "one end," and "the other end," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In this document, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. In this document, "multiple" means two or more, that is, it includes two, three, four, five, etc.

[0048] Example 1

[0049] See Figures 2-13 This embodiment provides an anti-tangling cutting component 4, see [link / reference] Figure 2 The cutting assembly 4 includes a mounting base 402, a drive mechanism 401, and a cutter head assembly 403.

[0050] The bottom of the mounting base 402 is provided with at least one protruding edge, and in some embodiments, the protruding edge extends downward along the height direction of the mounting base 402.

[0051] See Figure 8 The drive mechanism (e.g., a motor) includes a main body 4016 and a mounting portion 4013 fixed to the output end of the output shaft 4015 of the main body 4016. The main body 4016 is mounted on the upper surface of the mounting base. The output shaft 4015 passes through the bottom of the mounting base, such that at least a portion of the output shaft 4015 and the mounting portion 4013 are located within the flange; that is, a portion of the output shaft 4015 is wrapped by the bottom of the mounting base, and the portion extending out of the mounting base is located within the flange, or a portion of the output shaft 4015 and a portion of the mounting portion 4013 are simultaneously located within the flange.

[0052] See Figure 4 and Figure 12The cutter head assembly is provided with a grass-blocking inclined surface 403015 with a certain inclination, so that the cutter head assembly has an open third protective space 412 with an inner diameter that gradually increases from top to bottom. The top of the third protective space is provided with a third mounting hole 403013, and the mounting part is fixed in the third mounting hole 403013. The grass-blocking inclined surface 403015, the protruding edge, and the bottom of the mounting base together form a closed second protective space 409, and at least a part of the output shaft is located in the second protective space 409. When the output shaft is driven to rotate, the output shaft can drive the mounting part and the cutter head assembly to rotate synchronously. It should be noted that the above-mentioned "closed" does not necessarily mean completely closed. For example, when the cutter head assembly is connected to the output shaft, due to size limitations or other possible reasons, there will inevitably be a certain gap between the protruding edge and the grass-blocking inclined surface, but the whole is still in a shielded state. Therefore, the above situation also belongs to the "closed" in this article.

[0053] In some embodiments, see Figure 3 The cutter head assembly includes a limiting member 40304, a fixed cutter head 40301, and a cutting blade 40302. The limiting member 40304 includes a fixing part, a connecting part, and a limiting part connected in sequence. The fixed cutter head 40301 is provided with a first mounting hole and a third mounting hole. The mounting part is fixed in the third mounting hole, and the upper surface of the fixed cutter head 40301 and the protruding edge form a second protective space. The cutting blade 40302 is provided with a fourth mounting hole. When the limiting member 40304 is passed through the fourth mounting hole and the first mounting hole in sequence, the cutting blade 40302 is connected to the fixed cutter head 40301. A first mounting hole is fitted onto the outside of the fixing part, and a fourth mounting hole is fitted onto the outside of the connecting part and confined between the fixed cutter head 40301 and the limiting part. The height of the connecting part is greater than the height of the cutting blade 40302. When the output shaft is driven to rotate, the output shaft can drive the fixed cutter head 40301 and the cutting blade 40302 to rotate synchronously. When the cutting blade 40302 encounters an obstacle, the cutting blade 40302 can rotate relative to the fixed cutter head 40301 to achieve buffering. That is, when the cutting blade 40302 encounters a hard object, it can rotate relative to the fixed cutter head 40301 to avoid the obstacle. After bypassing the hard object, the cutting blade 40302 can reset under the action of the centrifugal force generated by the high-speed rotating output shaft and the fixed cutter head 40301 and continue cutting.

[0054] In some embodiments, see Figure 11The protruding edge includes an outer protruding edge 4021 and an inner protruding edge 4022 arranged sequentially from the outside to the inside at the bottom of the mounting base 402. The height of the outer protruding edge 4021 is higher than the height of the inner protruding edge 4022. The inner protruding edge 4022, together with the bottom of the mounting base 402 and the top of the fixed cutter head, forms a first protective space. The outer protruding edge 4021, the inner protruding edge 4022, the upper surface of the grass-blocking slope of the fixed cutter head, and the bottom of the mounting base 402 together enclose a second protective space. The first protective space and the second protective space are stacked and at least partially overlap. The two achieve stacked cross protection in different dimensions (different heights and different positions), which can effectively prevent long grass and vines from entangled in the output shaft.

[0055] In some embodiments, see Figure 4 The fixed cutter head 40301 is provided with a cutter head folded edge 403016 on its edge to further protect the gaps in the second protective space.

[0056] In some embodiments, the mounting portion is interference-fitted with the third mounting hole 403013 so that the mounting portion can be fixed within the third mounting hole 403013. In some specific embodiments, at least one limiting tooth 403014 is provided in the third mounting hole 403013, and correspondingly, at least one limiting groove is provided on the mounting portion; or, at least one limiting tooth 403014 is provided on the mounting portion, and correspondingly, at least one limiting groove is provided in the third mounting hole 403013. The limiting tooth 403014 can be semi-circular, and correspondingly, the limiting groove can also be semi-circular. Through the mutual cooperation of the limiting tooth 403014 and the limiting groove, the lateral connection between the fixed cutter head 40301 and the mounting portion can be strengthened, further preventing radial relative displacement between the two, thus better completing power transmission.

[0057] In some embodiments, see Figure 2 The mounting part and the output shaft are also provided with anti-loosening components 406. The anti-loosening component 406 can be an anti-loosening limiting bolt, which passes through the anti-loosening hole on the mounting part through its own thread structure and is connected to the output shaft to limit the two and achieve the anti-loosening function.

[0058] In some embodiments, see Figure 2It also includes a locking element and a fastener 407. The first end of the locking element is fixed to the mounting portion, and the fastener 407 is fixed to the second end of the locking element. The fastener 407 and the bottom of the output shaft cooperate to form a clamping structure for simultaneously clamping the mounting portion and the cutter head assembly 403, thereby axially limiting the cutter head assembly 403. The locking element can be a locking bolt, and the fastener 407 can be a nut.

[0059] In some embodiments, the locking member passes through the mounting portion and is fixed to the output shaft; that is, the locking member is fixed to both the mounting portion and the output shaft.

[0060] Specifically, see Figure 8 The bottom of the output shaft 4015 is provided with a mounting plane, the area of ​​which is larger than the area of ​​the mounting part 4013. The mounting part 4013 is located in the third mounting hole. The top of the fixed cutter head abuts against the mounting plane, and the top of the fastener contacts both the mounting part 4013 and the bottom of the fixed cutter head. That is, the mounting plane and the fastener cooperate to clamp the fixed cutter head and the mounting part 4013, thereby achieving axial positioning between the mounting part 4013 and the fixed cutter head.

[0061] In some embodiments, see Figure 12 The grass-blocking inclined surface 403015 corresponds to the second protective space 409, so that the second protective space 409 is in the shape of an inverted triangle or an inverted trapezoid. When debris accidentally enters the second protective space 409, the grass-blocking inclined surface 403015 can block the debris and prevent it from entering the first protective space 408. As the output shaft continues to rotate, the debris can be thrown out along the grass-blocking inclined surface 403015 (outer wall) under the action of centrifugal force, further improving the anti-entanglement effect.

[0062] In some embodiments, see Figure 2 and Figure 12 It also includes an anti-loosening spacer 405, the top of which is clamped between the mounting part and the fastener 407, and extends downward to form a fourth protective space 411 located inside the third protective space 412. The fastener 407 is located inside the fourth protective space 411. If debris accidentally enters the third protective space 412, it can also be blocked outside the fourth protective space 411. As the output shaft continues to rotate, the debris can be thrown out along the grass-blocking slope 403015 (inner wall) under the action of centrifugal force, further improving the anti-tangling effect.

[0063] In some embodiments, the thickness of the anti-loosening sleeve 405 gradually decreases from top to bottom to form a guide slope opposite to the inclination direction of the grass-blocking slope 403015. That is, the guide slope and the grass-blocking slope 403015 are located on opposite sides of the vertical plane. The guide slope and the grass-blocking slope 403015 work together to throw out debris. At the same time, the "triangular structure" formed between the guide slope and the grass-blocking slope can also support the bent fixed cutter head to a certain extent.

[0064] In some embodiments, the obtuse angle between the grass-blocking slope and the horizontal plane ranges from 120° to 150°, preferably 135°.

[0065] In some embodiments, see Figure 4 and Figure 5 The first mounting hole 403011 is an irregularly shaped mounting hole, and the fixing part 403042 is an irregularly shaped fixing part 403042 that matches the shape of the first mounting hole 403011.

[0066] In some embodiments, see Figure 6 It also includes a protective sleeve 40303, on which a fifth mounting hole 403031 with the same shape as the irregular hole is provided, and a protective edge 403032 is provided along its axial direction. The protective sleeve 40303 forms a fifth protective space that wraps around the fixing part 403042.

[0067] In some specific embodiments, see Figure 5 The limiting member 40304 is an irregular bolt, wherein the fixing part 403042 is an irregular stud. The side wall of the stud is cut with a plane along the axial direction to form a cutting plane parallel to the axis, so that the cross-section of the stud is a combination of a circle and a plane. Correspondingly, the first mounting hole that mates with the stud is a circular hole. One side of the hole wall is provided with a limiting plane that matches the cutting plane, so that the cross-section of the first mounting hole is a combination of a circle and a plane. The planar mating between the stud and the mounting hole effectively prevents the bolt from rotating axially. The connecting part 403041 is a cylindrical boss. Of course, the limiting part 403043 can also be cylindrical, and the cross-sectional area of ​​the limiting part 403043 is larger than the cross-sectional area of ​​the connecting part 403041, so as to cooperate with the fixed cutter head to restrict the cutting blade between the two.

[0068] When in use, first pass the fixing part 403042 through the fourth mounting hole and the first mounting hole in sequence, then through the protective sleeve, and then fix it with a nut. The nut and at least a part of the fixing part 403042 are located in the fifth protective space inside the protective sleeve and are wrapped up, which can prevent the limiting part and the nut from being loosened by weeds or other foreign objects or by vibration during the high-speed rotation of the cutting blade, thereby greatly improving the cutting safety.

[0069] In some embodiments, see Figure 2 The cutter head assembly 403 is also provided with a second mounting hole. When the fixing member 404 is passed through the second mounting hole and the mounting base 402 in sequence, the cutter head assembly 403 and the mounting base 402 can be fixed relative to each other.

[0070] In some embodiments, see Figure 13 The fixing component is a safety locking pin. The mounting base is provided with a locking pin hole corresponding to the second mounting hole. The safety locking pin includes a button 40401, a limiting section 40402, and a locking engagement section 40403 arranged in sequence. A locking ball 40404 is movably disposed on the locking engagement section 40403. When the button 40401 is pressed, the locking ball 40404 retracts into the locking engagement section 40403. When the button 40401 is released, the locking ball 40404 springs back and protrudes out of the locking engagement section 40403, thereby fixing the cutter head assembly and the mounting base between the limiting section 40402 and the locking ball 40404. This prevents the cutter head assembly from rotating during disassembly or equipment maintenance, which could pose a danger to maintenance and operation personnel. After the cutter head assembly maintenance is completed, the fixing component can be removed by pressing the button 40401.

[0071] In some embodiments, see Figure 7 The cutting blade 40302 can be made with cutting edges on both sides, that is, both sides are provided with cutting edges 403022. When one side is worn, the cutting edge can be switched by adjusting the blade head direction to maintain cutting quality and improve service life. It can also be made into an angled type (see Figure 13 The high-speed rotating wind lifts the stems from the ground upwards, aiming to create a neater cut. Furthermore, in relatively flat areas such as parks, courtyards, and sports fields with fewer stones and debris, the cutting component 4 can also be switched to a flat straight blade or an angled straight blade to achieve different cutting quality requirements, thereby improving efficiency and applicability.

[0072] In summary, in response to complex working conditions (such as cutting tall grass, long grass, vine grass, etc., and situations with a lot of hard objects and debris), grass stalks are easily entangled in the cutting blade shaft, which can lead to the blade shaft jamming, loosening of mounting bolts and nuts, and blade loosening. In addition, the cutting blade is easily damaged when it hits rocks or other foreign objects, so this application provides a layered cross protection structure and a "dynamic and static combination" blade disc structure design.

[0073] First, this application uses a dynamic cutting blade and a static fixed cutting disc in the cutting disc assembly to trigger an avoidance mechanism when cutting hard objects or vines. That is, the cutting blade can rotate relative to the fixed cutting disc, thereby achieving adaptive cutting of the cutting disc. At the same time, the static cutting disc, as a supporting base, can ensure the stability of the overall structure, so that the cutting blade moves while other structures remain stationary.

[0074] Furthermore, protective measures are taken for the connection points of each component. For example, a fifth protective space is set at the connection between the fixed cutter head and the cutting blade, and four protective spaces are stacked and cross-set on both sides of the fixed cutter head. This can effectively protect each connection point, further improve the connection stability of the support base and the output shaft, and ensure that the two are always in a "static connection".

[0075] Furthermore, the four protective spaces located on both sides of the fixed cutter head provide multi-dimensional protection for the output shaft and fasteners at different heights (for example, the lower half of the first protective space overlaps with the upper half of the second protective space, or the lower half of the second protective space overlaps with the upper half of the third protective space). The structure is compact, and multi-point reinforcement protection is achieved on different planes (connection and reinforcement are carried out at different positions of the fixed cutter head), which can improve the strength of the fixed cutter head in different dimensions. Moreover, through the design of the grass-blocking slope, even if debris enters the second or third protective space located on the outside, it can be thrown out along the grass-blocking slope under the action of centrifugal force, thereby preventing debris from accumulating in the second or third protective space or even entering the first and / or fourth protective space and causing entanglement.

[0076] Example 2

[0077] This embodiment provides a lawn mowing platform, see [link / reference] Figure 1 The device includes a cutting platform 2 and at least one cutting component 4 installed at the bottom of the cutting platform 2. A guide ring 201 is circumferentially arranged around the cutting component 4, extending to one side of the cutting platform 2 to form a grass outlet. This guide ring 201 works in conjunction with the cutter disc assembly to form a cutting air chamber, which combs, guides, and discharges the cut material. In other words, the cut material is guided along the inner wall of the guide ring 201 to the grass outlet for directional discharge.

[0078] The cutting component 4 can refer to the cutting component 4 in Embodiment 1, and will not be described again here.

[0079] In some embodiments, the cutting assembly 4 is provided with a front protective assembly 5, a rear protective assembly 1, and side protective assemblies 3 on its front, rear, and sides, respectively. These three protective assemblies are primarily used to protect the surrounding environment and personnel from potential damage caused by sudden abnormalities in the high-speed rotating blade during operation. To ensure cutting effectiveness, the front protective assembly 5 and rear protective assembly 1 are made of soft fabric-reinforced rubber sheets, while the side protective assembly 3 is made of high-strength, wear-resistant engineering plastic, enhancing protection while improving ground contact area and passability when crossing ditches and ridges.

[0080] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0081] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. An anti-tangling cutting assembly, characterized in that, include: Mounting base, drive mechanism, and cutter head assembly; The bottom of the mounting base is provided with at least one protruding edge; The drive mechanism includes a main body and a mounting portion fixed to the output end of the output shaft of the main body. The main body is mounted on the upper surface of the mounting base, and the output shaft passes through the bottom of the mounting base. The cutter head assembly is provided with a grass-blocking slope with a certain inclination, so that the cutter head assembly has an open third protective space with an inner diameter that gradually increases from top to bottom. The top of the third protective space is provided with a third mounting hole, and the mounting part is fixed in the third mounting hole. The grass-blocking slope, the protruding edge, and the bottom of the mounting base together form a closed second protective space, and at least a part of the output shaft is located in the second protective space. The protruding edge includes an outer protruding edge and an inner protruding edge arranged sequentially from the outside to the inside at the bottom of the mounting base, and the height of the outer protruding edge is higher than the height of the inner protruding edge; The inner convex edge, the bottom of the mounting base, and the top of the cutter head assembly together form a closed first protective space; the grass-blocking slope, the outer convex edge, the inner convex edge, and the bottom of the mounting base enclose and form a second protective space; the second protective space is generally in the shape of an inverted triangle or an inverted trapezoid. The first protective space and the second protective space are stacked, and the lower half of the first protective space overlaps with the upper half of the second protective space, and the lower half of the second protective space overlaps with the upper half of the third protective space. It also includes an anti-loosening spacer, the top of which is clamped between the mounting part and the fastener, and extends downward to form an open fourth protective space located inside the third protective space, and the fastener is located inside the fourth protective space; The thickness of the anti-loosening septum gradually decreases from top to bottom to form a guide slope opposite to the inclination direction of the grass-blocking slope, and a triangular structure is formed between the guide slope and the grass-blocking slope.

2. The cutting assembly according to claim 1, characterized in that, It also includes a locking element and a fastener. The first end of the locking element is fixed to the mounting part, and the fastener is fixed to the second end of the locking element. The fastener and the bottom of the output shaft cooperate to form a clamping structure for simultaneously clamping the mounting part and the cutter head assembly, so as to axially limit the cutter head assembly.

3. The cutting assembly according to claim 1 or 2, characterized in that, The obtuse angle between the grass-blocking slope and the horizontal plane ranges from 120° to 150°.

4. The cutting assembly according to claim 1, characterized in that, The cutter head assembly is also provided with a second mounting hole. When the fixing member is passed through the second mounting hole and the mounting base in sequence, the cutter head assembly and the mounting base can be fixed relative to each other.

5. The cutting assembly according to claim 1, characterized in that, The cutter head assembly includes a limiting member, a fixed cutter head, and a cutting blade. The limiting member includes a fixing part, a connecting part, and a limiting part connected in sequence. The fixed cutter head is provided with a first mounting hole, and the cutting blade is provided with a fourth mounting hole. When the limiting member passes through the fourth mounting hole and the first mounting hole in sequence, the first mounting hole is sleeved on the outside of the fixed part, and the fourth mounting hole is sleeved on the outside of the connecting part and is limited between the fixed cutter head and the limiting part. The height of the connecting part is greater than the height of the cutting blade. When the output shaft is driven to rotate, the output shaft can drive the fixed cutter head and the cutting blade to rotate synchronously. When the cutting blade encounters an obstacle, the cutting blade can rotate relative to the fixed cutter head to achieve buffering.

6. The cutting assembly according to claim 5, characterized in that, The first mounting hole is an irregularly shaped mounting hole, and the fixing part is an irregularly shaped fixing part that matches the shape of the first mounting hole.

7. The cutting assembly according to claim 6, characterized in that, It also includes a protective sleeve, which has irregular holes with the same shape as the first mounting hole, forming a fifth protective space that wraps around the fixing part.

8. A lawn mowing platform, characterized in that, It includes a cutting platform and at least one cutting component installed at the bottom of the cutting platform. A grass guide ring is circumferentially arranged around the cutting component, and the grass guide ring extends toward one side of the mowing platform to form a grass outlet. The cutting assembly includes a mounting base, a drive mechanism, and a cutter head assembly; The bottom of the mounting base is provided with at least one protruding edge; The drive mechanism includes a main body and a mounting portion fixed to the output end of the output shaft of the main body. The main body is mounted on the upper surface of the mounting base, and the output shaft passes through the bottom of the mounting base. The cutter head assembly is provided with a grass-blocking slope with a certain inclination, so that the cutter head assembly has an open third protective space with an inner diameter that gradually increases from top to bottom. The top of the third protective space is provided with a third mounting hole, and the mounting part is fixed in the third mounting hole. The grass-blocking slope, the protruding edge, and the bottom of the mounting base together form a closed second protective space, and at least a part of the output shaft is located in the second protective space. The protruding edge includes an outer protruding edge and an inner protruding edge arranged sequentially from the outside to the inside at the bottom of the mounting base, and the height of the outer protruding edge is higher than the height of the inner protruding edge; The inner convex edge, the bottom of the mounting base, and the top of the cutter head assembly together form a closed first protective space; the grass-blocking slope, the outer convex edge, the inner convex edge, and the bottom of the mounting base enclose and form a second protective space; the second protective space is generally in the shape of an inverted triangle or an inverted trapezoid. The first protective space and the second protective space are stacked, and the lower half of the first protective space overlaps with the upper half of the second protective space, and the lower half of the second protective space overlaps with the upper half of the third protective space. It also includes an anti-loosening spacer, the top of which is clamped between the mounting part and the fastener, and extends downward to form an open fourth protective space located inside the third protective space, and the fastener is located inside the fourth protective space; The thickness of the anti-loosening septum gradually decreases from top to bottom to form a guide slope opposite to the inclination direction of the grass-blocking slope, and a triangular structure is formed between the guide slope and the grass-blocking slope.

Images