Grass mowing executing mechanism and grass mowing machine

Abstract

The utility model provides a grass mowing executing mechanism and a grass mowing machine, and belongs to the technical field of grass mowing equipment. The mounting shell is used for mounting one of a grass mowing blade or a grass mowing rope, a connecting clamping groove is formed in one of the mounting shell and the rotating head, a connecting buckle is arranged on the other one of the mounting shell and the rotating head, the connecting clamping groove and the connecting buckle are fixed in a clamped mode, meanwhile, the connecting clamping groove and the connecting buckle can be separated, and the rotating head can rotate in the axial direction of the rotating head. One of the rotating head and the mounting shell is provided with a mounting part, a mounting cavity is formed in the mounting part, an abutting elastic piece is arranged in the mounting cavity, one end of the abutting elastic piece abuts against the bottom wall of the mounting cavity, and the other end of the abutting elastic piece abuts against the other one of the rotating head and the mounting shell; the device has the advantages that the abutting elastic piece can be in a compressed energy storage state, that is, the abutting elastic piece exerts continuous pre-tightening force on the mounting shell and the rotating head, the connecting buckle and the connecting clamping groove are kept in close contact through the pre-tightening force, and the risk of loosening or disengagement caused by vibration or external force is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of grass cutting equipment, and in particular relates to a grass cutting actuator and a grass cutting machine. Background Technology

[0002] In the field of landscaping and agricultural machinery, lawnmowers are commonly used vegetation management tools, and their design and performance are crucial for improving work efficiency, reducing operator workload, and ensuring safety. Traditional lawnmower actuators typically include an output component (such as a rotating head) and a mounting housing for attaching lawnmower blades or ropes. The connection method between these components directly affects the stability and reliability of the equipment.

[0003] In early designs, the rotating head and the mounting housing were often fixed using a simple snap-fit ​​method. However, this type of design has some inherent limitations: First, during long-term use, the connection may loosen or even detach unexpectedly due to vibrations and external forces generated during equipment operation; second, dimensional errors and assembly tolerances during manufacturing are difficult to completely avoid, which may result in a loose connection and affect the stability of the overall structure. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a stable grass-cutting actuator.

[0005] The objective of this utility model can be achieved through the following technical solution: a grass-cutting actuator, comprising:

[0006] Output component, the output component including a rotating head;

[0007] The mounting housing is used to mount either a grass trimming blade or a grass trimming rope. One of the mounting housing and the rotating head is provided with a connecting groove, and the other is provided with a connecting buckle. The connecting groove and the connecting buckle engage and fix the two parts, while also allowing them to be separated. Along the axial direction of the rotating head, one of the rotating head and the mounting housing is provided with a mounting part. The mounting part contains a mounting cavity, and the mounting cavity contains an abutting elastic member. One end of the abutting elastic member abuts against the bottom wall of the mounting cavity, and the other end of the abutting elastic member abuts against the rotating head and the other of the mounting housing.

[0008] When the rotating head is fixed to the mounting shell, the abutting elastic element is in a compressed energy storage state.

[0009] In the aforementioned grass-cutting actuator, a support column is provided inside the mounting cavity, and the abutting elastic element includes an abutting spring, which is sleeved on the support column.

[0010] In the aforementioned grass-cutting actuator, along the axial direction of the rotating head, the abutment spring has a gradually decreasing diameter as it gets closer to the bottom wall of the mounting cavity.

[0011] In the aforementioned grass-cutting actuator, the connecting buckle includes a connecting protrusion disposed on the outer wall of one of the mounting housing and the rotating head, and the connecting protrusion has a gradual change in wall thickness, which becomes thinner as it gets closer to the insertion end of one of the mounting housing and the rotating head.

[0012] In the aforementioned grass-cutting actuator, when the mounting housing is used to install grass-cutting rope, a striking and releasing shaft that can move along the rotation axis of the mounting housing is provided on the mounting housing. The striking and releasing shaft includes a releasing shaft and a striking head fixedly disposed thereto. The striking head is provided with a connecting cavity, and an abutting protrusion is provided in the connecting cavity. When the mounting housing is fixed to the rotating head, a receiving cavity is formed between the mounting housing and the rotating head. The releasing shaft is located in the receiving cavity, while the striking head extends out of the mounting housing through the mounting housing. The mounting portion of the rotating head extends into the connecting cavity through the releasing shaft, and the abutting protrusion abuts against the abutting elastic member.

[0013] In the aforementioned grass-cutting actuator, the abutting protrusion is provided with a plug-in cavity with an opening at one end. When the linear distance between the striking head and the rotating head decreases, the support column can extend into the plug-in cavity.

[0014] In the above-mentioned grass-cutting actuator, when the mounting housing is used to connect with the grass-cutting blade, a mounting component is fixedly provided on the rotating head, and a connecting column is fixedly provided on the mounting component;

[0015] The grass trimmer blade has a connecting portion, which includes a mounting hole and a passage hole that are interconnected. The diameter of the mounting hole is smaller than the diameter of the passage hole, so that the connecting post passes through the passage hole and engages with the mounting hole to fix the grass trimmer blade to the output component. The connecting portion also includes an abutting protrusion on the side of the grass trimmer blade.

[0016] When the grass-cutting blade moves relative to the mounting part, the abutting protrusion will abut against the mounting part to prevent the connecting post from disengaging from the mounting hole.

[0017] In the above-mentioned grass-cutting actuator, there are two abutting protrusions. The two abutting protrusions are respectively arranged on opposite sides of the grass-cutting blade and are symmetrically arranged. However, only one abutting protrusion can abut and connect with the mounting part at any time.

[0018] In the aforementioned grass-cutting actuator, along the radial direction of the rotating head, the outer surface of the mounting part is an arc-shaped surface, and the center of the outer surface of the mounting part is located on the central axis of the connecting column.

[0019] A lawn mower includes the aforementioned lawn mowing mechanism.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: By providing an abutting elastic element inside the rotating head, when the rotating head of the output component is fixed with the mounting shell, the abutting elastic element can be in a compressed and energy-storing state. This means that the abutting elastic element applies a continuous pre-tightening force to the mounting shell and the rotating head. This pre-tightening force ensures that the connecting buckle and the connecting slot maintain a tight contact, reducing the risk of loosening or separation caused by vibration or external force. Inevitably, there will be certain dimensional errors or assembly tolerances during the manufacturing process. The elastic deformation characteristics of the abutting elastic element can effectively compensate for these tolerances, ensuring that even with slight dimensional differences, the tight contact between the connecting components can be maintained, thereby improving the stability and reliability of the overall structure. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the grass-cutting actuator;

[0022] Figure 2 This is a three-dimensional structural diagram of the rotating head;

[0023] Figure 3 This is a three-dimensional structural diagram of the mounting housing for installing grass trimmer blades;

[0024] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure after connection with the rotating head;

[0025] Figure 5 This is a three-dimensional structural diagram of the mounting shell for installing the straw rope;

[0026] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure after connection with the rotating head;

[0027] Figure 7 This is a three-dimensional structural diagram of the grass-cutting actuator after the grass-cutting blades are installed;

[0028] Figure 8 yes Figure 7 A schematic diagram of the cross-sectional structure;

[0029] Figure 9 This is a three-dimensional structural diagram of a grass-cutting blade.

[0030] In the diagram, 100 is the rotating head; 101 is the connecting slot; 102 is the mounting part; 103 is the mounting cavity; 104 is the support column; 105 is the abutting elastic element; 200 is the mounting shell; 201 is the connecting buckle; 202 is the connecting protrusion; 203 is the snap-fit ​​boss; 204 is the striking head; 205 is the abutting protrusion; 206 is the insertion cavity; 207 is the connecting cavity; 208 is the pay-off shaft; 300 is the mounting part; 301 is the connecting column; 302 is the grass trimmer blade; 303 is the grass trimmer blade; 304 is the connecting part; 305 is the mounting hole; 306 is the passage hole; 307 is the abutting protrusion; 308 is the abutting recess; and 309 is the connecting surface. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] like Figures 1-6 As shown, a mowing mechanism includes:

[0034] Output component, including rotating head 100;

[0035] Mounting housing 200 is used to mount either grass trimmer blade 302 or grass trimmer rope. One of the mounting housing 200 and the rotating head 100 is provided with a connecting groove 101, and the other of the two is provided with a connecting buckle 201. The connecting groove 101 and the connecting buckle 201 are engaged and fixed, and at the same time, they can be separated. Along the axial direction of the rotating head 100, one of the rotating head 100 and the mounting housing 200 is provided with a mounting part 102. The mounting part 102 is provided with a mounting cavity 103. The mounting cavity 103 is provided with an abutting elastic member 105. One end of the abutting elastic member 105 abuts against the bottom wall of the mounting cavity 103, and the other end of the abutting elastic member 105 abuts against the rotating head 100 and the other of the mounting housing 200.

[0036] When the rotating head 100 is fixed to the mounting shell 200, the abutting elastic element 105 is in a compressed energy storage state.

[0037] In this embodiment, by providing an abutting elastic member 105 inside the rotating head 100, when the rotating head 100 of the output component is fixed with the mounting shell 200, the abutting elastic member 105 can be in a compressed energy storage state. This means that the abutting elastic member 105 applies a continuous pre-tightening force to the mounting shell 200 and the rotating head 100. This pre-tightening force ensures that the connecting buckle 201 and the connecting groove 101 maintain a tight contact, reducing the risk of loosening or separation due to vibration or external force. Inevitably, there will be certain dimensional errors or assembly tolerances during the manufacturing process. The elastic deformation characteristics of the abutting elastic member 105 can effectively compensate for these tolerances, ensuring that even in the case of slight dimensional differences, the tight contact between the connecting components can be maintained, thereby improving the stability and reliability of the overall structure.

[0038] In this application, as an optional solution, the mounting part 102 is provided on the rotating head 100.

[0039] Preferably, a support column 104 is provided in the mounting cavity 103, and the abutting elastic element 105 includes an abutting spring, which is sleeved on the support column 104.

[0040] In this embodiment, the support column 104 provides a precise guide path for the abutment spring, ensuring that the spring maintains linear motion during compression and recovery, and preventing the spring from skewing or twisting; moreover, the presence of the support column 104 can help to quickly locate and fix the position of the abutment spring, simplifying the assembly process and improving production efficiency.

[0041] More preferably, along the axial direction of the rotating head 100, the abutment spring has a gradual change in diameter that decreases as it gets closer to the bottom wall of the mounting cavity 103.

[0042] In this embodiment, since the diameter of the abutment spring located at the bottom wall of the mounting cavity 103 is small, its positioning relative to the support column 104 is more accurate, which can effectively prevent the spring from shifting or tilting during operation and enhance the stability of the entire system. Moreover, as it approaches the bottom wall of the mounting cavity 103, the decrease in spring diameter means that the stress at this point is more concentrated, which helps to provide a more balanced pressure distribution under compression.

[0043] Specifically, the connecting buckle 201 includes a connecting protrusion 202 disposed on the outer wall of one of the mounting housing 200 and the rotating head 100, and the connecting protrusion 202 has a gradual change in wall thickness as it gets closer to the insertion end of one of the mounting housing 200 and the rotating head 100.

[0044] In this embodiment, as the insertion end approaches, the wall thickness of the connecting protrusion 202 gradually decreases, making it easier to insert when connecting the mounting shell 200 and the rotating head 100. The thinner part provides less resistance, thereby reducing the force required for initial insertion and improving the ease of assembly. The thicker part forms a snap-fit ​​protrusion 203 between itself and the outer wall of either the mounting shell 200 or the rotating head 100. When the connecting buckle 201 is snapped into place with the connecting slot 101, the slot wall of the connecting slot 101 can just fit into the snap-fit ​​protrusion 203. Under the action of the elastic abutment force, the snap-fit ​​protrusion 203 and the connecting slot 101 maintain a tight connection.

[0045] Preferably, when the mounting housing 200 is used to install the straw rope, a striking and feeding shaft that can move along the rotation axis of the mounting housing 200 is provided on the mounting housing 200. The striking and feeding shaft includes a feeding shaft 208 and a striking head 204 fixedly disposed with the feeding shaft 208. The striking head 204 is provided with a connecting cavity 207, and an abutting protrusion 205 is provided in the connecting cavity 207. When the mounting housing 200 is fixed with the rotating head 100, a receiving cavity is formed between the mounting housing 200 and the rotating head 100. The feeding shaft 208 is located in the receiving cavity, while the striking head 204 extends out of the mounting housing 200 through the mounting housing 200. The mounting part 102 on the rotating head 100 extends into the connecting cavity 207 through the feeding shaft 208, and the abutting protrusion 205 abuts against the abutting elastic member 105.

[0046] In this embodiment, the striking head 204 is present to achieve the line release operation by striking the grass-cutting actuator and colliding with the striking head 204. Therefore, the striking head 204 will protrude a portion relative to the mounting shell 200. In order to ensure that the elastic abutment force between the mounting shell 200 and the rotating head 100 remains the same whether the grass-cutting blade 302 or the grass-cutting rope is installed on the mounting shell 200, an abutment protrusion 205 is added inside the striking head 204 to shorten the elastic abutment distance between the mounting shell 200 and the rotating head 100. Moreover, the presence of the abutment elastic member 105 inside the rotating head 100 can also automatically reset after the striking head 204 is struck and extended.

[0047] More preferably, the abutting protrusion 205 is provided with a plug cavity 206 with an opening at one end. When the linear distance between the striking head 204 and the rotating head 100 becomes smaller, the support column 104 can extend into the plug cavity 206.

[0048] It is worth mentioning that there is a gap between the abutting protrusion 205 and the cavity wall of the connecting cavity 207 to facilitate the insertion of the mounting part 102.

[0049] In this embodiment, after the striking head 204 is struck, it will move relative to the rotating head 100 and shorten the distance between the two, so that the abutting elastic member 105 is further compressed. In order to reserve the movement space between the two, an insertion cavity 206 with an opening at one end is provided on the abutting protrusion 205. When the straight distance between the striking head 204 and the rotating head 100 becomes smaller, the support column 104 can extend into the insertion cavity 206.

[0050] like Figures 7-9 As shown, preferably, when the mounting housing 200 is used to connect with the grass trimmer blade 302, the rotating head 100 is fixedly provided with a mounting component 300, and the mounting component 300 is fixedly provided with a connecting post 301.

[0051] The grass trimmer blade 302 has a connecting portion 304. The connecting portion 304 includes a mounting hole 305 and a passage hole 306 that are interconnected. The diameter of the mounting hole 305 is smaller than the diameter of the passage hole 306, so that the connecting post 301 passes through the passage hole 306 and engages with the mounting hole 305 to fix it in place, thereby installing the grass trimmer blade 302 onto the output component. The connecting portion 304 also includes an abutting protrusion 307 provided on the side of the grass trimmer blade 302.

[0052] When the grass trimmer blade 302 moves relative to the mounting part 102, the abutting protrusion 307 will abut against the mounting part 102 to prevent the connecting post 301 from disengaging from the mounting hole 305.

[0053] In this embodiment, the presence of the abutting protrusion 307 ensures that when the grass trimmer blade 302 moves laterally a certain distance, the abutting protrusion 307 will abut against the side of the mounting member 300, preventing the connecting part 304 on the grass trimmer blade 302 from continuing to move and causing the connecting post 301 to disengage from the mounting hole 305, thereby causing the grass trimmer blade 302 to disengage from the grass trimming actuator in a rotating state, greatly reducing the risk of the grass trimmer blade 302 accidentally disengaging in a high-speed rotating state.

[0054] More preferably, there are two abutting protrusions 307, which are respectively disposed on opposite sides of the grass trimmer blade 302 and are symmetrically arranged, but only one abutting protrusion 307 can abut and connect with the mounting part 102 at a time.

[0055] In this embodiment, two abutment protrusions 307 are symmetrically arranged along the axial direction of the output component. This design ensures that during use, regardless of the direction in which the trimmer blade 302 is installed, at least one abutment protrusion 307 will be in contact with the mounting component 300. The presence of the two abutment protrusions 307 allows the trimmer blade 302 to maintain uniform force in the axial direction during operation, improving the working efficiency and service life of the equipment. Furthermore, users do not need to distinguish between the front and back sides when installing the trimmer blade 302, simplifying the installation process. More importantly, even if one abutment protrusion 307 is damaged, the user can flip the trimmer blade 302 to continue using the other intact abutment protrusion 307, increasing the durability and reliability of the product.

[0056] More preferably, along the radial direction of the rotating head 100, the outer surface of the mounting part 102 is an arc-shaped surface, and the center of the outer surface of the mounting part 102 is located on the central axis of the connecting column 301.

[0057] In this embodiment, the side of the mounting member 300 is designed to be arc-shaped, and in the radial direction, the straight-line distance between the side of the mounting member 300 and the center of the connecting post 301 is equal. Since the distance between the side of the mounting member 300 and the center of the connecting post 301 is the same, even if the grass trimmer blade 302 rotates relative to the connecting post 301, the abutting protrusion 307 can still maintain abutment and anti-disengagement function with the mounting member 300.

[0058] More preferably, the mounting member 300 has an abutment recess 308 on the side where the connecting post 102 is provided, and the abutment protrusion 307 can extend into the abutment recess 308; wherein, when the grass trimmer blade 302 moves, the abutment protrusion 307 can abut against the side of the mounting member 300; along the axial direction of the mounting shell 200, the grass trimmer blade 302 deforms in a direction away from the abutment recess 308, so that the abutment protrusion 307 can extend into the abutment recess 308.

[0059] In this embodiment, the mounting member 300 has an abutment recess 308 on one side where the connecting post 102 is provided. After the grass trimmer blade 302 is deformed, the abutment protrusion 307 can extend into the abutment recess 308. When the connecting post 301 extends into the passage hole 306 to connect with the mounting hole 305, or when the connecting post 301 is withdrawn from the mounting hole 305 into the passage hole 306, the grass trimmer blade 302 only needs to be slightly deformed upwards to push the grass trimmer blade 302 horizontally, which facilitates the installation or removal of the grass trimmer blade 302. Moreover, when the grass trimmer blade 302 is in its normal extended state, the abutment protrusion 307 cannot extend into the abutment recess 308. Therefore, during the use of the grass trimmer blade 302, if the grass trimmer blade 302 becomes disconnected from the connecting post 301, the side of the mounting member 300 can still abut against the abutment protrusion 307 to prevent it from coming off.

[0060] Specifically, the connecting part 304 includes a connecting surface 309 and an abutting protrusion 307 disposed on the connecting surface 309. When the grass trimmer blade 302 is connected to the connecting post 301, with the connecting surface 309 as the reference surface, the straight distance between the end of the abutting protrusion 307 and the connecting surface 309 is greater than the straight distance between the bottom wall of the abutting recess 308 and the connecting surface 309.

[0061] Specifically, the connecting part 304 includes a connecting surface 309, an abutting protrusion 307 disposed on the connecting surface 309, and an abutting recess 307 having a bottom wall. When the grass trimmer blade 302 is installed on the output component, with the connecting surface 309 as the reference surface, the straight-line distance between the end face of the abutting protrusion 307 away from the connecting surface 309 and the connecting surface 309 is greater than the straight-line distance between the bottom wall and the connecting surface 309.

[0062] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0064] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A grass-cutting actuator, characterized in that, include: An output component, the output component including a rotating head (100); Mounting housing (200), used to mount either a grass trimmer blade (302) or a grass trimmer rope, wherein one of the mounting housing (200) and the rotating head (100) is provided with a connecting slot (101), and the other is provided with a connecting buckle (201), wherein the connecting slot (101) and the connecting buckle (201) are engaged and fixed, and also allow the two to be separated along the axial direction of the rotating head (100). The rotating head (100) and the mounting shell (200) are provided with a mounting part (102), the mounting part (102) is provided with a mounting cavity (103), the mounting cavity (103) is provided with an abutting elastic member (105), one end of the abutting elastic member (105) abuts against the bottom wall of the mounting cavity (103), and the other end of the abutting elastic member (105) abuts against the rotating head (100) and the other one of the mounting shells (200); When the rotating head (100) is fixed to the mounting shell (200), the abutting elastic member (105) is in a compressed energy storage state.

2. The mowing mechanism according to claim 1, characterized in that, The mounting cavity (103) is provided with a support column (104), and the abutting elastic element (105) includes an abutting spring, which is sleeved on the support column (104).

3. The grass-cutting actuator according to claim 2, characterized in that, Along the axial direction of the rotating head (100), the abutment spring has a gradual change in diameter that decreases as it gets closer to the bottom wall of the mounting cavity (103).

4. The mowing mechanism according to claim 1, characterized in that, The connecting buckle (201) includes a connecting protrusion (202) disposed on the outer wall of one of the mounting shell (200) and the rotating head (100), and the connecting protrusion (202) has a gradual change in wall thickness as it gets closer to the insertion end of one of the mounting shell (200) and the rotating head (100).

5. A mowing mechanism according to claim 2, characterized in that, When the mounting housing (200) is used to install straw rope, a striking and releasing shaft that can move along the rotation axis of the mounting housing (200) is provided on the mounting housing (200). The striking and releasing shaft includes a releasing shaft (208) and a striking head (204) fixedly disposed to the releasing shaft (208). The striking head (204) is provided with a connecting cavity (207), and an abutting protrusion (205) is provided in the connecting cavity (207). When the mounting housing (200) and the straw rope are installed, the striking head (204) is provided with a connecting cavity (207). When the rotating head (100) is fixed, a receiving cavity is formed between the mounting shell (200) and the rotating head (100), the wire feeding shaft (208) is located in the receiving cavity, the striking head (204) extends out of the mounting shell (200) through the mounting shell (200), and the mounting part (102) on the rotating head (100) extends into the connecting cavity (207) through the wire feeding shaft (208), and the abutting protrusion (205) abuts against the abutting elastic member (105).

6. A mowing mechanism according to claim 5, characterized in that, The abutting protrusion (205) is provided with a plug cavity (206) with an opening at one end. When the straight distance between the striking head (204) and the rotating head (100) becomes smaller, the support column (104) can extend into the plug cavity (206).

7. A mowing mechanism according to claim 1, characterized in that, When the mounting housing (200) is used to connect with the grass trimmer blade (302), a mounting component (300) is fixedly provided on the rotating head (100), and a connecting post (301) is fixedly provided on the mounting component (300). The grass trimmer blade (302) is provided with a connecting part (304). The connecting part (304) includes a mounting hole (305) and a passage hole (306) that are interconnected. The diameter of the mounting hole (305) is smaller than the diameter of the passage hole (306) so that the connecting post (301) passes through the passage hole (306) and engages with the mounting hole (305) to fix the grass trimmer blade (302) onto the output component. The connecting part (304) also includes an abutting protrusion (307) provided on the side of the grass trimmer blade (302). When the grass trimmer blade (302) moves relative to the mounting part (102), the abutting protrusion (307) will abut against the mounting part (102) to prevent the connecting post (301) from disengaging from the mounting hole (305).

8. A mowing mechanism according to claim 7, characterized in that, There are two abutting protrusions (307). The two abutting protrusions (307) are respectively located on opposite sides of the grass cutting blade (302) and are symmetrically arranged. However, only one abutting protrusion (307) can abut and connect with the mounting part (102) at any time.

9. A mowing mechanism according to claim 7, characterized in that, Along the radial direction of the rotating head (100), the outer surface of the mounting part (102) is an arc-shaped surface, and the center of the outer surface of the mounting part (102) is located on the central axis of the connecting column (301).

10. A lawn mower, characterized in that, Includes the mowing execution mechanism as described in any one of claims 1-9.

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