Cutter head assembly of mowing machine

Abstract

The utility model relates to the technical field of weeding machines, and provides a mowing machine cutterhead assembly capable of preventing adhesion passivation and convenient to clean, which comprises a cutterhead body and a connecting column arranged in the center of the cutterhead body, and a plurality of cutterhead body scraping frames are movably clamped on the connecting column. The cutter head body scraping frame comprises a limiting roller head movably clamped to the connecting column and an upper contact frame with one end arranged on the outer wall of the limiting roller head, a lower contact frame is arranged at the other end of the upper contact frame, a twisting device is arranged between the end of the upper contact frame and the end of the lower contact frame, and after the cutter head body is stained with attachments, the cutter head body scraping frame is pressed downwards, so that the cutter head body is scraped. And the lower contact frame is pulled open, so that the lower contact frame and the upper contact frame cover the cutter head body under the action of the twisting device, and the cutter head body is rotated to scrape and remove attachments on the surface of the cutter head body.

Description

Technical Field

[0001] The utility model relates to the technical field of weed cutters, in particular to a cutter disc assembly for a lawn mower. Background Art

[0002] A lawn mower, also known as a weed cutter or lawnmower, is a mechanical tool used to trim lawns, vegetation, etc. The lawn mower consists of a cutter disc, an engine, running wheels, a traveling mechanism, and a control part. The engine provides power to allow the cutter disc to rotate quickly, and the running wheels cooperate with the traveling mechanism to move the lawn mower when pushed or pulled manually, so that the cutter disc can cut off vegetation that is too high. It is easy to use and efficient, and the trimming flatness is much greater than manual trimming.

[0003] The blade assembly is the core component of the lawn mower. The blade assembly is rotated to cut the vegetation. The blade assembly rotates at high speed with the engine to make the cuts of the vegetation neat. At the same time, the sharper edge of the blade assembly makes the cutting faster, preventing the phenomenon of vegetation not being disconnected after cutting. When in use, it only needs to be installed on the rotating shaft of the lawn mower for quick installation. It is easy to use and has high mowing efficiency.

[0004] Although the above-mentioned prior art can solve the corresponding technical problems, it still has certain defects: when the existing blade disc assembly is used to trim the dandelion flower bed, although the blade disc assembly can quickly cut the dandelions, mucus will flow out and adhere to the blade disc assembly after the dandelions are cut. At the same time, dandelions have more fluff, which can easily cause the fluff and cut leaves and dust raised by movement to adhere to the blade disc assembly under the action of mucus. After using it for a period of time, an adhesion layer will adhere to the surface of the blade disc assembly, thereby greatly reducing the sharpness of the surface of the blade disc assembly, and it is easy to cause incomplete cutting during the cutting process. Utility Model Content

[0005] The utility model aims to provide a lawn mower blade assembly which can prevent adhesion and passivation and is easy to clean, in view of the defects and shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lawn mower blade assembly, including a blade body and a connecting column arranged at the center position of the blade body, a plurality of blade body scraping frames movably engaged on the connecting column, the blade body scraping frame including a limiting roller movably engaged on the connecting column and an upper contact frame with one end arranged on the outer wall of the limiting roller, a lower contact frame is arranged on the other end of the upper contact frame, and a twisting device is provided between the end of the upper contact frame and the end of the lower contact frame. When the blade body is contaminated with attachments, the blade body scraping frame is pressed down, and the lower contact frame is pulled apart, so that the lower contact frame and the upper contact frame are covered on the blade body under the action of the twisting device, and the blade body is rotated to scrape and remove the attachments on the surface of the blade body.

[0007] A further improvement is that a first twisting block is provided in the middle section of the upper contact frame.

[0008] A further improvement is that a first elastic sheet is provided on the upper surface of the upper contact frame at a position corresponding to the first twisting block.

[0009] A further improvement is that a second twisting block is provided in the middle section of the lower contact frame.

[0010] A further improvement is that a second elastic sheet is provided on the lower surface of the lower contact frame at a position corresponding to the second twisting block.

[0011] A further improvement is that the twisting device is a hinge block.

[0012] A further improvement is that the torsion device is a torsion spring ring.

[0013] A further improvement is that the limiting roller head includes a rotating block that is movably engaged with the connecting column and a threaded cavity protrusion that is integrally formed on the connecting column and fits with the inner wall of the rotating block. A limiting column is also inserted into the rotating block, and a threaded rod is provided at the bottom of the limiting column. The outer wall of the threaded rod is meshed and connected with the inner wall of the threaded cavity protrusion.

[0014] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: the utility model is loaded into the lawn mower for cutting. After the blade disc is stained with attachments, the blade disc scraping frame is pressed down, and the lower contact frame is pulled apart, so that the lower contact frame and the upper contact frame are covered on the blade disc under the action of the twisting device, and the blade disc is rotated to scrape and remove the attachments on the surface of the blade disc, thereby ensuring that the surface of the blade disc will not be adhered to by attachments and produce passivation, ensuring sharpness and cutting effect, and making cleaning more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a schematic structural diagram of the front view of the cutter head assembly of the utility model;

[0017] Figure 2 It is a schematic structural diagram of a side cross-section of a cutter head assembly of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the front cross section of the scraping frame of the cutter head body of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the top cross section of the limiting roller head of the utility model. DETAILED DESCRIPTION

[0020] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0021] See also Figure 1-4 As shown, the technical solution adopted in this specific embodiment is: a lawn mower blade assembly, including a blade body 1 and a connecting column 2 arranged at the center position of the blade body 1, and a plurality of blade body scraping frames 3 are movably engaged on the connecting column 2. In this embodiment, three blade body scraping frames 3 are provided, and the blade body scraping frames 3 include a limiting roller 31 movably engaged on the connecting column 2 and an upper contact frame 32 with one end arranged on the outer wall of the limiting roller 31, and the limiting roller 31 includes a rotating block 311 movably engaged on the connecting column 2 and a threaded cavity protrusion 312 integrally formed on the connecting column 2 and in contact with the inner wall of the rotating block 311. The rotating block 311 is also inserted with a limiting column 313, and a threaded rod 314 is provided at the bottom of the limiting column 313. The outer wall of the threaded rod 314 is meshed and connected with the inner wall of the threaded cavity protrusion 312. A lower contact frame 35 is provided on the other end of the upper contact frame 32, and a twisting device is provided between the end of the upper contact frame 32 and the end of the lower contact frame 35. When the cutter body 1 is contaminated with attachments, the cutter body scraping frame 3 is pressed down, and the lower contact frame 35 is pulled apart, so that the lower contact frame 35 and the upper contact frame 32 are covered on the cutter body 1 under the action of the twisting device, and the cutter body 1 is rotated to scrape and remove the attachments on the surface of the cutter body 1. When in use The blade body 1 of the blade assembly is connected to the power equipment of the lawn mower through the connecting column 2, and then the power equipment outputs power to the connecting column 2 to drive the blade body 1 to rotate to cut the vegetation. When the blade body 1 is cut for a period of time and the surface is contaminated with vegetation juice and causes attachment, the blade body 1 can be stopped from rotating, and the limiting column 313 with the connecting threaded rod 314 is screwed out from the threaded cavity protrusion 312, so that the pressure applied by the limiting column 313 on the rotating block 311 disappears, and the rotating block 311 can be rotated freely, thereby pressing down the upper contact frame 32 and pulling open the lower contact frame 35, so that the upper contact frame 32 is attached to the upper surface of the cutter body 1, and then the lower contact frame 35 is twisted to change its angle under the action of the twisting device and fit the lower surface of the cutter body 1, and then the limiting column 313 and the threaded rod 314 are screwed in again to press the rotating block 311 to prevent it from rotating, and then the power device of the lawn mower is turned on to rotate the cutter body 1, and the surface attachments are scraped and removed through the upper contact frame 32 and the lower contact frame 35 during the rotation process, thereby ensuring that the surface of the cutter body 1 will not be attached to the attachments and produce passivation, ensuring the sharpness and cutting effect, and making cleaning more convenient;

[0022] The middle section of the upper contact frame 32 is provided with a first twisting block 33, which is conducive to enabling the upper contact frame 32 to change its angle from the middle section, thereby better fitting to the surface of the cutter head body 1;

[0023] A first elastic sheet 34 is provided on the upper surface of the upper contact frame 32 at a position corresponding to the first twisting block 33, which is conducive to applying a certain elastic pressure to the upper contact frame 32, thereby making it better compacted and attached to the surface of the cutter body 1, thereby ensuring the scraping effect;

[0024] The middle section of the lower contact frame 35 is provided with a second twisting block 36, which is conducive to enabling the lower contact frame 35 to change its angle from the middle section, so as to better fit the surface of the cutter head body 1;

[0025] A second elastic sheet 37 is provided on the lower surface of the lower contact frame 35 at a position corresponding to the second twisting block 36, which is conducive to applying a certain elastic pressure to the lower contact frame 35, thereby making it better compacted and attached to the surface of the cutter body 1, thereby ensuring the scraping effect;

[0026] The twisting device is an articulated block or a torsion spring ring 38. When the articulated block is used, the structure is simpler, the installation is convenient and the twisting is easy. When the torsion spring ring 38 is used, not only can the twisting be performed, but also a certain elastic force will be applied after the twisting is completed, so that the upper contact frame 32 and the lower contact frame 35 can be better pressed on the surface of the cutter disc body 1, further improving the scraping and cleaning effect.

[0027] Working principle of the utility model: When the utility model is used, the blade body 1 of the blade assembly is connected to the power equipment of the lawn mower through the connecting column 2, and then the power equipment outputs power to the connecting column 2 to drive the blade body 1 to rotate to cut the vegetation. When the blade body 1 is cut for a period of time and the surface is contaminated with plant juice and causes attachment, the blade body 1 can be stopped from rotating, and the limit column 313 with the connecting threaded rod 314 is screwed out from the threaded cavity protrusion 312, so that the pressure applied by the limit column 313 on the rotating block 311 disappears, and the rotating block 311 can be rotated freely, thereby pressing down the contact frame 3 2, and pull open the lower contact frame 35, so that the upper contact frame 32 is attached to the upper surface of the cutter body 1, and then twist the lower contact frame 35 to change its angle under the action of the twisting device and fit the lower surface of the cutter body 1, and then screw in the limit column 313 and the threaded rod 314 again to press the rotating block 311 to prevent it from rotating, and then turn on the power device of the lawn mower to rotate the cutter body 1, and during the rotation process, the surface attachments are scraped and removed through the upper contact frame 32 and the lower contact frame 35, thereby ensuring that the surface of the cutter body 1 will not be attached to the attachments and produce passivation, ensuring sharpness and cutting effect, and making cleaning more convenient.

[0028] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0029] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A lawn mower blade assembly, comprising a blade body (1) and a connecting column (2) arranged at a central position on the blade body (1), characterized in that: A plurality of cutter body scraping frames (3) are movably engaged on the connecting column (2), and the cutter body scraping frames (3) include a limiting roller (31) movably engaged on the connecting column (2) and an upper contact frame (32) with one end arranged on the outer wall of the limiting roller (31), and a lower contact frame (35) is provided on the other end of the upper contact frame (32), and a twisting device is provided between the end of the upper contact frame (32) and the end of the lower contact frame (35). When the cutter body (1) is stained with attachments, the cutter body scraping frame (3) is pressed down and the lower contact frame (35) is pulled apart, so that the lower contact frame (35) and the upper contact frame (32) are covered on the cutter body (1) under the action of the twisting device, and the cutter body (1) is rotated to scrape and remove the attachments on the surface of the cutter body (1).

2. A lawn mower cutter disc assembly according to claim 1, characterized in that: A first twisting block (33) is provided in the middle section of the upper contact frame (32).

3. A lawn mower cutter disc assembly according to claim 2, characterized in that: A first elastic sheet (34) is provided on the upper surface of the upper contact frame (32) at a position corresponding to the first twisting block (33).

4. The lawn mower cutter disc assembly according to claim 1, characterized in that: A second twisting block (36) is provided in the middle section of the lower contact frame (35).

5. A lawn mower cutter disc assembly according to claim 4, characterized in that: A second elastic sheet (37) is provided on the lower surface of the lower contact frame (35) at a position corresponding to the second twisting block (36).

6. The lawn mower cutter disc assembly according to claim 1, characterized in that: The twisting device is a hinge block.

7. The lawn mower cutter disc assembly according to claim 1, characterized in that: The torsion device is a torsion spring ring (38).

8. The lawn mower cutter disc assembly according to claim 1, characterized in that: The limiting roller (31) comprises a rotating block (311) movably engaged with the connecting column (2) and a threaded cavity protrusion (312) integrally formed on the connecting column (2) and mutually engaged with the inner wall of the rotating block (311); a limiting column (313) is also inserted into the rotating block (311); a threaded rod (314) is provided at the bottom of the limiting column (313); the outer wall of the threaded rod (314) is meshedly connected with the inner wall of the threaded cavity protrusion (312).

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