A weeding machine with a brush head capable of being quickly replaced

Abstract

The utility model provides a weeding machine with a brush head capable of being quickly replaced, belonging to the technical field of weeding machines, aiming at solving the problem of poor stability and inability to quickly replace the brush head of the weeding machine in the prior art, the weeding machine comprises a gasoline engine, the output end of the gasoline engine is rotationally connected with an output shaft, the inside of the lower end of the output shaft is movably nested with a protruding block, the lower end of the protruding block is rotationally connected with a rotary disc, and the lower end of the rotary disc is provided with a blade, the outer side of the protruding block is elastically connected with a spring, the end of the spring is elastically connected with a clamping block, and the inside of the output shaft is provided with a magnetic ball, the core of the technical scheme lies in that the protruding block is movably nested with the output shaft, the spring and the clamping block are clamped in the groove of the output shaft by centrifugal force when rotating to prevent falling off, after stopping rotating, the protruding block and the rotary disc fall due to gravity, the clamping block and the spring fall off, quick replacement is realized, at the same time, the magnetic ball assists the clamping block to quickly embed in the groove, the utility model improves the replacement efficiency of the brush head of the weeding machine, reduces the maintenance cost, and is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of gardening tools technology, and in particular to a weeding machine with a quick-change weeding brush head. Background Technology

[0002] In the field of gardening tools, lawnmowers, as a common component of gardening equipment, are widely used for weed removal in lawns, gardens, and other areas. Most existing lawnmowers use a fixed connection method for their brush heads, meaning the brush head is connected to the drive unit (such as a gasoline engine) via bolts, nuts, or other fasteners. While this connection method ensures the stability of the brush head to a certain extent, it has revealed some obvious problems and limitations in actual use.

[0003] Specifically, the brush head replacement process in existing weeding machines is cumbersome and complex. Because the brush head is fixedly connected to the drive unit, when the brush head wears out or needs replacement, the operator must use tools to disassemble the fasteners to complete the replacement. This process is not only time-consuming and labor-intensive, but also increases the difficulty and cost of operation.

[0004] Furthermore, existing weeding brush heads suffer from poor stability during use. Due to insufficient tightness or stability in the connection between the brush head and the drive unit, they are prone to loosening or detaching when the brush head rotates at high speed for weeding. This not only affects the efficiency and quality of weeding operations but may also pose safety hazards to operators and the surrounding environment.

[0005] To address the aforementioned issues, industry professionals have actively explored and improved upon these solutions. For example, CN220674423U discloses a multi-functional combined brush structure, primarily used in weeders. This combined brush includes a mounting component, a first weeding component, and a second weeding component. The mounting component has a first mounting area and a second mounting area. The first weeding component is first securely mounted in the first mounting area to form a first weeding brush head. When the first weeding component is completely worn, the second weeding component can be detachably mounted in the second mounting area to form a second weeding brush head. While this patented multi-functional combined brush structure achieves the reuse of the mounting component, its overall structure is relatively complex. The mounting component includes a cover plate, a pressure plate, and possible connecting sleeves, etc., increasing the difficulty and cost for users in assembling and maintaining these components. Although it provides a replacement solution for the first and second weeding components, the second weeding component depends on a specific second mounting component. The modular design limits the flexibility of replacement; while it claims to reduce operating costs, the multi-functional combination brush is actually expensive to manufacture, especially considering the need to produce different types of weeding parts and complex installation components. Furthermore, users need to purchase multiple different types of weeding parts to suit various weeding needs, which also increases the overall cost. In addition, its complex combination brush structure requires more professional knowledge and skills for maintenance and component replacement, posing a challenge to non-professional users. Its technical solution mainly addresses the wear and tear of the weeding brush head, but does not address improvements in the ease of brush head replacement, cutting efficiency, or energy consumption, exhibiting certain limitations in technical level and failing to make substantial improvements in the ease of brush head replacement, thus offering no advantage in this area.

[0006] There are also related technical reports that envision a quick brush head replacement method by designing a specific snap-fit ​​connection. However, the stability is difficult to solve, especially under long-term high-speed rotation operation, the snap-fit ​​connection is prone to wear or loosening, causing the brush head to fall off.

[0007] Therefore, how to improve the stability of the brush head while ensuring quick replacement has become a pressing technical problem in the field of gardening tools. This invention addresses this issue by proposing a novel weeding brush head structure, aiming to overcome the aforementioned limitations of existing technologies and provide a new technical solution for the development of gardening tools. Summary of the Invention

[0008] The technical problem to be solved by this utility model is to provide a weeding machine with a quick-change weeding brush head, which solves the technical problems of inconvenient replacement and poor stability of weeding brush heads in the field of gardening tools, especially the limitations of existing technology where brush head replacement is cumbersome and the brush head is easy to fall off during use.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a weeder with a quick-change weeding brush head, including a gasoline engine, a handle at the end of the gasoline engine, an output shaft rotatably connected to the output end of the gasoline engine, a protrusion movably nested inside the lower end of the output shaft, a rotating disk rotatably connected to the lower end of the protrusion, a blade rotatably connected to the lower end of the rotating disk, a spring elastically connected to the outer side of the upper end of the protrusion, a locking block elastically connected to the end of the spring, and a magnetic ball inside the output shaft.

[0010] In a preferred embodiment, the gasoline engine drives the output shaft to rotate at high speed, and the gasoline engine is operated by a handle.

[0011] In a preferred embodiment, the lower end of the output shaft is hollow, and a groove is formed around the inner wall of the lower end of the output shaft. The magnetic ball is located inside the groove, and the locking block is movably nested and connected with the groove.

[0012] In a preferred embodiment, the rotary disk is movably nested with the output shaft via a protrusion, and the rotary disk is in contact with the ground.

[0013] In a preferred embodiment, the diameter of the protrusion is half the diameter of the lower end of the output shaft. When the protrusion is embedded inside the output shaft, the locking block slides and nests with the groove inside the output shaft.

[0014] In a preferred embodiment, the magnetic ball and the spring are magnetically attracted to each other, and the magnetic ball and the spring are movably nested together.

[0015] In a preferred embodiment, the spring and the locking block are matched and surround the outside of the protrusion, and both the locking block and the spring are arranged horizontally.

[0016] In a preferred embodiment, weeding blades are evenly distributed at the bottom of the rotary disc, the weeding blades are detachably connected to the rotary disc by bolts, and the weeding blades are made of high-strength alloy steel.

[0017] The present invention provides a weeding machine with a quick-change weeding brush head, which has the following beneficial effects:

[0018] 1. This utility model designs a unique connecting mechanism including protrusions, springs, locking blocks and magnetic balls, which realizes the quick replacement of brush heads and makes the connection and separation between the brush head and the driving device quick and easy. It solves the problem of difficult brush head replacement in the prior art and reduces the difficulty of operation and time cost.

[0019] 2. This utility model utilizes the centrifugal force generated by rotation, and the spring and locking block can be further engaged inside the groove of the output shaft, which enhances the stability of the brush head during the rotational cutting process and avoids the risk of falling off;

[0020] 3. By enhancing the stability and reliability of the connecting mechanism, this utility model ensures the stability of the brush head during long-term high-speed rotation and cutting, further improving the safety and reliability of the weeding machine.

[0021] 4. The structure designed in this utility model allows for quick brush head replacement and a stable and reliable connecting mechanism, thereby extending the service life of the brush head and the weeder.

[0022] 5. This utility model is designed with a movable nested connection structure between the protrusion and the output shaft, which allows the protrusion and the rotating disk to be flexibly installed and removed from the output shaft;

[0023] 6. The magnetic attraction of the magnetic ball to the spring in this utility model can help the locking block to be quickly embedded in the groove of the output shaft, further improving the stability of the structure and the convenience of disassembly and assembly.

[0024] 7. The rotating disc of this utility model is connected to the output shaft by a movable nesting of the protrusion and the magnetic adsorption connection between the magnetic ball and the spring, which together realize the function of quick installation and removal of the brush head.

[0025] 8. This utility model utilizes the sliding nesting connection between the spring and the locking block and the groove of the output shaft, as well as the magnetic attraction of the magnetic ball to the spring, to achieve stable connection and quick replacement of the brush head during rotation.

[0026] 9. The brush head of this utility model can be replaced separately without replacing the entire brush head assembly of the weeder, which further improves the replacement efficiency of the brush head, reduces the cost of use, and improves work efficiency.

[0027] 10. The structural design of this utility model enhances the stability of the brush head during rotation, avoiding the risk of the brush head falling off or being damaged;

[0028] 11. Through innovative structural design, this utility model enables quick replacement and secure connection of the brush head, meeting the needs of the gardening tool industry for efficient, convenient, and safe operation, and improving the efficiency and quality of gardening operations;

[0029] 12. This utility model demonstrates significant advantages in terms of the ease of brush head replacement, connection stability, safety of use, extended service life, and reduced costs, effectively meeting the needs of the gardening tool field. Clear replacement instructions or markings help users quickly identify and complete the brush head replacement process, making operation convenient and greatly improving the user experience. Furthermore, its compact structure and reasonable design not only facilitate maintenance but also reduce overall weight, making gardening work easier and less strenuous. It is a major innovation driving the modernization of gardening tools. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a partial structural schematic diagram of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the rotating disk of this utility model;

[0034] Figure 4 This is a schematic diagram of the assembly of the rotary disk and output shaft of this utility model;

[0035] Figure 5 This is a schematic diagram of the output shaft and protrusion of this utility model;

[0036] Figure 6 This is a schematic diagram of the assembly of the output shaft and the protrusion of this utility model;

[0037] In the diagram: gasoline engine 1, output shaft 2, spring 3, handle 101, turntable 102, blade 103, protrusion 104, magnetic ball 201, and locking block 301. Detailed Implementation

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments:

[0039] Example 1

[0040] like Figures 1 to 6 As shown, a weed cutter with a quick-change brush head includes a gasoline engine 1, a handle 101 at the end of the gasoline engine 1, an output shaft 2 rotatably connected to the output end of the gasoline engine 1, a protrusion 104 movably nested inside the lower end of the output shaft 2, a rotating disk 102 rotatably connected to the lower end of the protrusion 104, a blade 103 rotatably connected to the lower end of the rotating disk 102, a spring 3 elastically connected to the outer side of the upper end of the protrusion 104, a locking block 301 elastically connected to the end of the spring 3, and a magnetic ball 201 disposed inside the output shaft 2.

[0041] In this embodiment, the gasoline engine 1 drives the output shaft 2 to rotate at high speed, and the gasoline engine 1 is operated by the handle 101.

[0042] Furthermore, the lower end of the output shaft 2 is hollow, and a groove is formed around the inner wall of the lower end of the output shaft 2. The magnetic ball 201 is located inside the groove, and the locking block 301 is movably nested and connected with the groove.

[0043] Furthermore, the rotary disk 102 is movably nested with the output shaft 2 via the protrusion 104, and the rotary disk 102 is in contact with the ground.

[0044] Furthermore, the diameter of the protrusion 104 is half the diameter of the lower end of the output shaft 2. When the protrusion 104 is embedded inside the output shaft 2, the locking block 301 slides and nests with the groove inside the output shaft 2.

[0045] Furthermore, the magnetic ball 201 and the spring 3 are magnetically attracted to each other, and the magnetic ball 201 and the spring 3 are movably nested together.

[0046] Furthermore, the spring 3 and the locking block 301 are matched and arranged around the outside of the protrusion 104, with both the locking block 301 and the spring 3 arranged horizontally.

[0047] Furthermore, the bottom of the rotary disc 102 is evenly distributed with weeding blades 103, which are detachably connected to the rotary disc 102 by bolts, and the weeding blades 103 are made of high-strength alloy steel.

[0048] In practical use, the gasoline engine 1 drives the output shaft 2 to rotate at high speed, which in turn drives the protrusion 104 and the rotating disk 102 to rotate synchronously. The spring 3 on the outside of the protrusion 104 extends outward using the centrifugal force generated by the rotation, which drives the locking block 301 to further engage with the groove of the output shaft 2, ensuring that the protrusion 104 and the rotating disk 102 will not fall off during the rotational cutting process. When the gasoline engine 1 stops working, by manually lifting the gasoline engine 1, the lower end of the rotating disk 102 loses ground support, and the protrusion 104 and the rotating disk 102 fall downward due to gravity. The locking block 301 and the spring 3 fall off from the groove of the output shaft 2, thereby realizing the quick replacement of the brush head.

[0049] Example 2

[0050] In another preferred embodiment, based on embodiment 1, such as Figures 1 to 6 As shown, the weed cutter of this utility model includes a gasoline engine 1, with a handle 101 at the end of the gasoline engine 1 for easy control and movement by the operator. An output shaft 2 is rotatably connected to the output end of the gasoline engine 1. The lower end of the output shaft 2 is hollow, with grooves forming around its inner wall. A magnetic ball 201 is also provided inside the output shaft 2, positioned within the groove, to assist in the quick insertion and fixation of the locking block 301.

[0051] In this embodiment, a protrusion 104 is movably nested at the lower end of the output shaft 2, and a rotating disk 102 is rotatably connected to the lower end of the protrusion 104. A blade 103 is rotatably connected to the lower end of the rotating disk 102. A spring 3 is elastically connected to the outer side of the upper end of the protrusion 104, and a locking block 301 is elastically connected to the end of the spring 3. When the protrusion 104 is embedded in the output shaft 2, the locking block 301 can slide and nest with the groove inside the output shaft 2, thereby achieving a stable connection between the protrusion 104 and the output shaft 2. At the same time, due to the magnetic attraction between the magnetic ball 201 and the spring 3, the stability of the connection between the protrusion 104 and the output shaft 2 is further enhanced.

[0052] Furthermore, the diameter of the protrusion 104 is half the diameter of the lower end of the output shaft 2, allowing the protrusion 104 to be smoothly embedded inside the output shaft 2. When the protrusion 104 is embedded, the locking block 301 and the spring 3 surround the outside of the protrusion 104 and are arranged horizontally. When the weeder is working, the gasoline engine 1 drives the output shaft 2 to rotate at high speed, which in turn drives the protrusion 104, the rotating disk 102, and the blade 103 to rotate synchronously, cutting the weeds on the ground. At this time, the spring 3 extends outward using the centrifugal force generated by the rotation, driving the locking block 301 to further engage inside the groove of the output shaft 2, preventing the protrusion 104 and the rotating disk 102 from falling off the lower end of the output shaft 2 during the rotational cutting process.

[0053] When the brush head needs to be replaced, the operator only needs to turn off the gasoline engine 1 and manually lift the gasoline engine 1 so that the lower end of the rotary disc 102 loses ground support. At this time, using the weight of the protrusion 104 and the rotary disc 102, the protrusion 104 will fall down from the lower end of the output shaft 2, and at the same time, the locking block 301 and the spring 3 will disengage from the groove of the output shaft 2, thereby realizing the quick replacement of the brush head.

[0054] Example 3

[0055] In another preferred embodiment, based on embodiments 1 and 2, this embodiment provides a weeder with a quickly replaceable weeding brush head, the structure of which is as follows: Figures 1 to 6 As shown, it specifically includes components such as a gasoline engine 1, an output shaft 2, a protrusion 104, a turntable 102, a blade 103, a spring 3, a locking block 301, and a magnetic ball 201.

[0056] The gasoline engine 1 serves as the power source, and its end is equipped with a handle 101 to facilitate the operator's control and movement of the entire weeding brush head. The output end of the gasoline engine 1 is rotatably connected to an output shaft 2 via some connection method (such as a coupling or direct connection), and the output shaft 2 is responsible for transmitting the power of the gasoline engine 1.

[0057] The lower end of the output shaft 2 is hollow, with grooves around its inner wall for movably nesting with the locking block 301. Inside the output shaft 2, a magnetic ball 201 is located within the groove and magnetically attracts the spring 3, assisting in the quick insertion and fixation of the locking block 301.

[0058] The protrusion 104, serving as a connector, has a diameter half the diameter of the lower end of the output shaft 2, allowing it to be embedded inside the output shaft 2. A spring 3 is elastically connected to the outer upper end of the protrusion 104, and a retaining block 301 is elastically connected to the end of the spring 3. When the protrusion 104 is embedded in the output shaft 2, the retaining block 301 can slide and nest with the groove inside the output shaft 2, thereby achieving a stable connection between the protrusion 104 and the output shaft 2.

[0059] The rotary disc 102 is movably nested with the output shaft 2 via the protrusion 104 and is in contact with the ground. A blade 103 is rotatably connected to the lower end of the rotary disc 102. When the output shaft 2 drives the protrusion 104 to rotate, the rotary disc 102 and the blade 103 will also rotate, thereby cutting the weeds on the ground.

[0060] In actual use, the operator first starts the gasoline engine 1, which drives the output shaft 2 to rotate at high speed. Since the protrusion 104 is movably nested with the output shaft 2, the protrusion 104, the rotating disk 102, and the blade 103 will also rotate synchronously. During rotation, the spring 3 on the outside of the protrusion 104 extends outward using the centrifugal force generated by the rotation, causing the locking block 301 to further engage with the groove inside the output shaft 2, thereby ensuring that the protrusion 104, the rotating disk 102, and the blade 103 will not fall off from the lower end of the output shaft 2 during the rotational cutting process.

[0061] When the brush head needs to be replaced, the operator first turns off the gasoline engine 1, stopping the rotation of the output shaft 2. Then, the gasoline engine 1 is manually lifted, causing the lower end of the rotating disc 102 to lose ground support. At this point, using the downward weight of the protrusion 104 and the rotating disc 102, the protrusion 104 will fall down from the lower end of the output shaft 2, and simultaneously the retaining block 301 and spring 3 will disengage from the groove inside the output shaft 2. In this way, the operator can quickly and easily replace the entire brush head.

[0062] It is worth noting that the magnetic attraction between the magnetic ball 201 and the spring 3 plays an auxiliary role in the installation and removal of the brush head. When the protrusion 104 is inserted into the output shaft 2, the magnetic ball 201 attracts the spring 3 and the locking block 301 to move into the groove, thereby helping the locking block 301 to quickly and accurately insert into the groove. This not only improves the convenience of brush head installation but also enhances the stability of the brush head during use.

[0063] Example 4

[0064] In another preferred embodiment, based on embodiment 3, such as Figure 1 As shown, this embodiment has the same basic structure as embodiment 3, but differs in specific details:

[0065] In this embodiment, when the weeding brush head is working, the protrusion 104 is embedded in the interior of the lower end of the output shaft 2, the spring 3 is spaced 2~3cm apart from the magnetic ball 201, the gasoline engine 1 drives the output shaft 2 to rotate at high speed, and the output shaft 2 drives the protrusion 104 to rotate synchronously. The spring 3 on the outside of the protrusion 104 extends outward by utilizing the centrifugal force generated by the rotation, driving the locking block 301 to further engage with the groove of the output shaft 2, so as to prevent the protrusion 104 and the rotating disk 102 from falling off the lower end of the output shaft 2 during the rotational cutting process.

[0066] Furthermore, in this embodiment, the weeding brush head of the weeder is also designed with a simple locking mechanism, which users can unlock with just a light press, further simplifying the replacement process; and all parts are made of corrosion-resistant and wear-resistant materials to ensure stability and durability under long-term operation, bringing users a more convenient and efficient weeding experience.

[0067] In summary, the weeding brush heads provided in the above four embodiments, through the unique design of structural components such as the protrusion 104, spring 3, locking block 301, and magnetic ball 201, achieve quick brush head replacement and stable connection. The weeding brush head of this weeder has a simple structure, is easy to operate, and is highly practical, significantly improving the efficiency and quality of weeding operations.

[0068] The significant advantage lies in the fact that the above-mentioned technical solution simplifies and speeds up the replacement of the weeding brush head, greatly improving the efficiency of weeding operations. Simultaneously, the sliding nesting connection between the protrusion 104 and the output shaft 2 via the locking block 301 and the groove, along with the magnetic attraction between the magnetic ball 201 and the spring 3, makes the brush head more stable during use and less prone to falling off, thus ensuring the quality and safety of weeding operations. This conclusion has been fully verified through actual use and testing.

[0069] In the preferred embodiment, the gasoline engine 1 drives the output shaft 2 to rotate at high speed, and the gasoline engine 1 is operated by the handle 101. The above configuration allows the operator to control the start and speed of the gasoline engine 1 by simply turning the handle 101, thereby adjusting the rotation speed of the output shaft 2 to meet different power requirements and improving the ease of operation and practicality of the equipment.

[0070] In a preferred embodiment, the lower end of the output shaft 2 is hollow, and a groove is formed around the inner wall of the lower end of the output shaft 2. The magnetic ball 201 is located inside the groove, and the locking block 301 is movably nested and connected to the groove. The above arrangement facilitates the magnetic ball 201 and the locking block 301 to limit the lower end of the output shaft 2, preventing the output shaft 2 from shaking. The magnetic force of the magnetic ball 201 can easily attract the locking block 301, improving the stability of the locking block 301 during connection.

[0071] In a preferred embodiment, the rotary disk 102 is movably nested with the output shaft 2 via a protrusion 104, and the rotary disk 102 is in contact with the ground. This arrangement allows the rotary disk 102 to rotate flexibly around the output shaft 2 when subjected to external force, while the protrusion 104 ensures a stable connection between the rotary disk 102 and the output shaft 2, thereby improving the overall stability and durability.

[0072] In a preferred embodiment, the diameter of the protrusion 104 is half the diameter of the lower end of the output shaft 2. When the protrusion 104 is embedded inside the output shaft 2, the locking block 301 slides and nests with the groove inside the output shaft 2. This arrangement allows the locking block 301 to be limited by the protrusion 104 when sliding inside the output shaft 2, preventing the locking block 301 from detaching from the inside of the output shaft 2 and improving the stability of the locking block 301 sliding inside the output shaft 2.

[0073] In a preferred embodiment, the magnetic ball 201 and the spring 3 are magnetically attracted, and the magnetic ball 201 and the spring 3 are movably nested together. This arrangement allows the magnetic ball 201 to reciprocate under the elastic force of the spring 3, increasing the connection elasticity. At the same time, the magnetic attraction connection between the magnetic ball 201 and the spring 3 also ensures the stability of the structure and the safety of use.

[0074] In a preferred embodiment, the spring 3 and the locking block 301 are matched and arranged around the outside of the protrusion 104, with both the locking block 301 and the spring 3 arranged horizontally. This arrangement ensures that the locking block 301, under the elastic force of the spring 3, always exerts an inward pushing force on the protrusion 104, thereby allowing the locking block 301 to engage in the corresponding slot, achieving rapid positioning and installation, and improving the convenience of installation.

[0075] In a preferred embodiment, weeding blades 103 are evenly distributed at the bottom of the rotary disc 102. The weeding blades 103 are detachably connected to the rotary disc 102 by bolts, and the weeding blades 103 are made of high-strength alloy steel. This configuration enables the weeding blades 103 to effectively cut weeds during rotation, while the high-strength alloy steel material improves the durability and wear resistance of the weeding blades 103, ensuring that they can maintain a good weeding effect even after long-term use.

[0076] In summary, this utility model proposes a weed cutter with a quickly replaceable weeding brush head, aiming to solve the technical problems of inconvenient replacement and poor stability of weeding brush heads in the field of gardening tools. It effectively overcomes the limitations of existing technologies where brush head replacement is cumbersome and the brush head is prone to falling off during use. This utility model uses a protrusion 104 embedded inside the output shaft 2 and connected to a spring 3. When the gasoline engine 1 drives the output shaft 2 to rotate at high speed, the centrifugal force generated by the rotation causes the spring 3 to drive the locking block 301 to firmly engage in the groove of the output shaft 2. This design ensures that the brush head will not fall off during high-speed rotation, greatly enhancing stability. Simultaneously, the magnetic ball 201 assists the locking block 301 in quickly and accurately engaging in the groove of the output shaft 2, further improving the convenience of brush head installation. When the gasoline engine 1 stops working, the user only needs to manually lift the machine. At this time, the brush head loses its ground support, and the protrusion 104 and the rotating disc 102 will automatically detach from the lower end of the output shaft 2 under their own weight, thus achieving quick brush head replacement. This unique connection mechanism allows for quick and easy connection and disconnection between the brush head and the weeder's drive unit, perfectly solving the problem of difficult brush head replacement in existing technologies. Compared to traditional brush head replacement methods, such as fixing with screws or other fasteners, this invention is simpler to operate and less time-consuming. Through the ingenious combination of the protrusion 104, spring 3, locking block 301, and magnetic ball 201, this invention achieves a completely new connection method, which not only greatly simplifies the brush head replacement process and reduces operational difficulty, but also allows users to quickly replace the brush head without professional skills. This innovative design not only enhances the user experience but also provides new ideas and directions for the development of gardening tools.

Claims

1. A weeding machine with a quickly replaceable weeding brush head, characterized in that: It includes a gasoline engine (1), a handle (101) is provided at the end of the gasoline engine (1), an output shaft (2) is rotatably connected to the output end of the gasoline engine (1), a protrusion (104) is movably nested inside the lower end of the output shaft (2), a turntable (102) is rotatably connected to the lower end of the protrusion (104), a blade (103) is rotatably connected to the lower end of the turntable (102), a spring (3) is elastically connected to the outer side of the upper end of the protrusion (104), a locking block (301) is elastically connected to the end of the spring (3), and a magnetic ball (201) is provided inside the output shaft (2).

2. The weeding machine with a quickly replaceable weeding brush head according to claim 1, characterized in that: The gasoline engine (1) drives the output shaft (2) to rotate at high speed, and the gasoline engine (1) is operated by the handle (101).

3. A weeding machine with a quickly replaceable weeding brush head according to claim 1, characterized in that: The lower end of the output shaft (2) is hollow, and the inner wall of the lower end of the output shaft (2) is surrounded by a groove. The magnetic ball (201) is located inside the groove, and the locking block (301) is movably nested and connected to the groove.

4. A weeding machine with a quickly replaceable weeding brush head according to claim 1, characterized in that: The rotary disk (102) is movably nested with the output shaft (2) via a protrusion (104), and the rotary disk (102) is in contact with the ground.

5. A weeding machine with a quickly replaceable weeding brush head according to claim 1, characterized in that: The diameter of the protrusion (104) is half the diameter of the lower end of the output shaft (2). When the protrusion (104) is embedded in the inside of the output shaft (2), the locking block (301) slides and nests with the groove inside the output shaft (2).

6. A weeding machine with a quickly replaceable weeding brush head according to claim 1, characterized in that: The magnetic ball (201) and the spring (3) are magnetically attracted to each other, and the magnetic ball (201) and the spring (3) are movably nested and connected.

7. A weeding machine with a quickly replaceable weeding brush head according to claim 1, characterized in that: The spring (3) and the locking block (301) are matched and are arranged around the outside of the protrusion (104). The locking block (301) and the spring (3) are arranged horizontally.

8. A weeding machine with a quickly replaceable weeding brush head according to claim 1, characterized in that: Weeding blades (103) are evenly distributed at the bottom of the rotary disc (102). The weeding blades (103) are detachably connected to the rotary disc (102) by bolts, and the weeding blades (103) are made of high-strength alloy steel.

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